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Anthony [MVP]
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Fred,
If the DMZ domain trusts the internal domain you can Push files out to it. If the internal domain trusts the DMZ domain (not what you want), the dmz can Pull files out from it. Ideally you would want the DMZ to have no inbound access to the LAN, so you would want to push files out to the DMZ. Anthony, http://www.airdesk.com "r14edge" <> wrote in message news:A7DD8E40-843A-4BFB-8057-... > Hello, > > I'm setting up a DMZ for my company and I'm facing a big problem. I > planned my DMZ on using a remote file storage located in my internal > network > to host my web files. I've build my DMZ in a new domain and I have setup a > trust relationship between my internal domain and my DMZ domain. The trust > is > one-way where the incoming trust is my internal domain and my outgoing > trust > is my DMZ domain. On my remote file server, I'm able to see the account of > my > DMZ domain. I've set up the ACL on my share to be use by a specific > account > in the DMZ without any problem. > > Now, from any server in my DMZ, I'm able to get on the root (\\10.0.0.0) > of > my share but when I click on the share itself, I got a access denied > message. > I notice in the security log of the remote server that any DMZ servers > that > tries to go on the remote file server, are logged under NT > AUTHORITY\ANONYMOUS LOGON. > > What am I missing here? I believe that computers in my DMZ should log > under > their name in the logs files, right? When I switch the trust relationship, > it's working like a charm, but I'm exposing my internal Domain to my DMZ > and > I don't want that. > > What can I do to solve this problem? > > Thank you for your replies, > > Fred |
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r14edge
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thanks for the reply Anthony. As for now, I'm able to log in my internal
domain using dmz domain credential. This prove me that my trust work, but for some reason, my web servers in my DMZ are unable to get on a share in my internal network. I'm starting to believe I got this concept of trust all wrong. Furthermore, how can the concept of pass-through authentification worked without a trust between two domains? What I'm trying to achieve with my DMZ is to be able to have web in a DMZ using a single storage area located in a internal network. Is there other way to do this? thanks "Anthony [MVP]" wrote: > Fred, > If the DMZ domain trusts the internal domain you can Push files out to it. > If the internal domain trusts the DMZ domain (not what you want), the dmz > can Pull files out from it. > Ideally you would want the DMZ to have no inbound access to the LAN, so you > would want to push files out to the DMZ. > Anthony, > http://www.airdesk.com > > > > > "r14edge" <> wrote in message > news:A7DD8E40-843A-4BFB-8057-... > > Hello, > > > > I'm setting up a DMZ for my company and I'm facing a big problem. I > > planned my DMZ on using a remote file storage located in my internal > > network > > to host my web files. I've build my DMZ in a new domain and I have setup a > > trust relationship between my internal domain and my DMZ domain. The trust > > is > > one-way where the incoming trust is my internal domain and my outgoing > > trust > > is my DMZ domain. On my remote file server, I'm able to see the account of > > my > > DMZ domain. I've set up the ACL on my share to be use by a specific > > account > > in the DMZ without any problem. > > > > Now, from any server in my DMZ, I'm able to get on the root (\\10.0.0.0) > > of > > my share but when I click on the share itself, I got a access denied > > message. > > I notice in the security log of the remote server that any DMZ servers > > that > > tries to go on the remote file server, are logged under NT > > AUTHORITY\ANONYMOUS LOGON. > > > > What am I missing here? I believe that computers in my DMZ should log > > under > > their name in the logs files, right? When I switch the trust relationship, > > it's working like a charm, but I'm exposing my internal Domain to my DMZ > > and > > I don't want that. > > > > What can I do to solve this problem? > > > > Thank you for your replies, > > > > Fred > > |
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Anthony [MVP]
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r14,
I don't think that's really what you would want to do. Leaving aside the idea of the Trust for a moment, the idea is that hosts in the DMZ (which could be compromised) should have no or limited access to the LAN. Limited access would means specified ports to specified hosts. For example LDAP or Radius or SecurID. For the DMZ to get be able to a Share on the internal network is probably not desirable. It sounds as though what you would do is to copy out your data from the internal network to the DMZ. This requires no inbound traffic to be allowed. You could use FTP or Robocopy to do this. The copy needs to use credentials that the DMZ recognises, e.g a local account on the DMZ server, or else you can use a one way trust where DMZ servers trust internal server. Hope that helps, Anthony http://www.airdesk.com "r14edge" <> wrote in message news:E7D9C5ED-97A9-4323-A9F5-... > thanks for the reply Anthony. As for now, I'm able to log in my internal > domain using dmz domain credential. This prove me that my trust work, but > for > some reason, my web servers in my DMZ are unable to get on a share in my > internal network. I'm starting to believe I got this concept of trust all > wrong. Furthermore, how can the concept of pass-through authentification > worked without a trust between two domains? > > What I'm trying to achieve with my DMZ is to be able to have web in a DMZ > using a single storage area located in a internal network. Is there other > way > to do this? > > thanks > > > "Anthony [MVP]" wrote: > >> Fred, >> If the DMZ domain trusts the internal domain you can Push files out to >> it. >> If the internal domain trusts the DMZ domain (not what you want), the dmz >> can Pull files out from it. >> Ideally you would want the DMZ to have no inbound access to the LAN, so >> you >> would want to push files out to the DMZ. >> Anthony, >> http://www.airdesk.com >> >> >> >> >> "r14edge" <> wrote in message >> news:A7DD8E40-843A-4BFB-8057-... >> > Hello, >> > >> > I'm setting up a DMZ for my company and I'm facing a big problem. I >> > planned my DMZ on using a remote file storage located in my internal >> > network >> > to host my web files. I've build my DMZ in a new domain and I have >> > setup a >> > trust relationship between my internal domain and my DMZ domain. The >> > trust >> > is >> > one-way where the incoming trust is my internal domain and my outgoing >> > trust >> > is my DMZ domain. On my remote file server, I'm able to see the account >> > of >> > my >> > DMZ domain. I've set up the ACL on my share to be use by a specific >> > account >> > in the DMZ without any problem. >> > >> > Now, from any server in my DMZ, I'm able to get on the root >> > (\\10.0.0.0) >> > of >> > my share but when I click on the share itself, I got a access denied >> > message. >> > I notice in the security log of the remote server that any DMZ servers >> > that >> > tries to go on the remote file server, are logged under NT >> > AUTHORITY\ANONYMOUS LOGON. >> > >> > What am I missing here? I believe that computers in my DMZ should log >> > under >> > their name in the logs files, right? When I switch the trust >> > relationship, >> > it's working like a charm, but I'm exposing my internal Domain to my >> > DMZ >> > and >> > I don't want that. >> > >> > What can I do to solve this problem? >> > >> > Thank you for your replies, >> > >> > Fred >> >> |
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r14edge
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The main reason why I wish to use a share on my internal network is coming
from what my programmers wish to do. They are building a website that our client will use to transfer files by HTTPS. I figure that since a DMZ is a insecure place, no data should reside in it. I'm puzzled. How will I store those files without having them in the DMZ? I'm starting to look at the possibility to use RADIUS. I saw one of your (I'm assuming since a Anthony from airdesk.co.uk at the time) previously answer about the matter. So far, I understand that I will need a RADIUS server in my internal domain and a RADIUS proxy in my DMZ. But I'm still skeptical about this because I see another flaw in my DMZ. What a headache ... Thank you for your answer, "Anthony [MVP]" wrote: > r14, > I don't think that's really what you would want to do. > > Leaving aside the idea of the Trust for a moment, the idea is that hosts in > the DMZ (which could be compromised) should have no or limited access to the > LAN. Limited access would means specified ports to specified hosts. For > example LDAP or Radius or SecurID. > > For the DMZ to get be able to a Share on the internal network is probably > not desirable. > > It sounds as though what you would do is to copy out your data from the > internal network to the DMZ. This requires no inbound traffic to be allowed. > You could use FTP or Robocopy to do this. The copy needs to use credentials > that the DMZ recognises, e.g a local account on the DMZ server, or else you > can use a one way trust where DMZ servers trust internal server. > Hope that helps, > Anthony > http://www.airdesk.com > > > > > "r14edge" <> wrote in message > news:E7D9C5ED-97A9-4323-A9F5-... > > thanks for the reply Anthony. As for now, I'm able to log in my internal > > domain using dmz domain credential. This prove me that my trust work, but > > for > > some reason, my web servers in my DMZ are unable to get on a share in my > > internal network. I'm starting to believe I got this concept of trust all > > wrong. Furthermore, how can the concept of pass-through authentification > > worked without a trust between two domains? > > > > What I'm trying to achieve with my DMZ is to be able to have web in a DMZ > > using a single storage area located in a internal network. Is there other > > way > > to do this? > > > > thanks > > > > > > "Anthony [MVP]" wrote: > > > >> Fred, > >> If the DMZ domain trusts the internal domain you can Push files out to > >> it. > >> If the internal domain trusts the DMZ domain (not what you want), the dmz > >> can Pull files out from it. > >> Ideally you would want the DMZ to have no inbound access to the LAN, so > >> you > >> would want to push files out to the DMZ. > >> Anthony, > >> http://www.airdesk.com > >> > >> > >> > >> > >> "r14edge" <> wrote in message > >> news:A7DD8E40-843A-4BFB-8057-... > >> > Hello, > >> > > >> > I'm setting up a DMZ for my company and I'm facing a big problem. I > >> > planned my DMZ on using a remote file storage located in my internal > >> > network > >> > to host my web files. I've build my DMZ in a new domain and I have > >> > setup a > >> > trust relationship between my internal domain and my DMZ domain. The > >> > trust > >> > is > >> > one-way where the incoming trust is my internal domain and my outgoing > >> > trust > >> > is my DMZ domain. On my remote file server, I'm able to see the account > >> > of > >> > my > >> > DMZ domain. I've set up the ACL on my share to be use by a specific > >> > account > >> > in the DMZ without any problem. > >> > > >> > Now, from any server in my DMZ, I'm able to get on the root > >> > (\\10.0.0.0) > >> > of > >> > my share but when I click on the share itself, I got a access denied > >> > message. > >> > I notice in the security log of the remote server that any DMZ servers > >> > that > >> > tries to go on the remote file server, are logged under NT > >> > AUTHORITY\ANONYMOUS LOGON. > >> > > >> > What am I missing here? I believe that computers in my DMZ should log > >> > under > >> > their name in the logs files, right? When I switch the trust > >> > relationship, > >> > it's working like a charm, but I'm exposing my internal Domain to my > >> > DMZ > >> > and > >> > I don't want that. > >> > > >> > What can I do to solve this problem? > >> > > >> > Thank you for your replies, > >> > > >> > Fred > >> > >> |
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Anthony [MVP]
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Fred,
That's a good question about data in the DMZ. But if you figure your DMZ is compromised so they have access to the data, then how secure would the data be on the LAN that you have given the DMZ access to? A lot of this is theoretical. If you follow good practice then the data on the DMZ should be reasonably safe. People put databases on the DMZ. They just don't allow access into the LAN. The thing about Radius and LDAP authentication is that they have a simple yes/no authentication protocol so they don't require extensive access to the LAN. RPC (the normal windows mechanism) is LAN based and assumes open access. Can you explain what you mean by "our client will use to transfer files by HTTPS". I suspect there is an easier answer in there somewhere, Anthony, http:/www.airdesk.co.uk "r14edge" <> wrote in message news:1FD7D541-D041-43B8-862C-... > The main reason why I wish to use a share on my internal network is coming > from what my programmers wish to do. They are building a website that our > client will use to transfer files by HTTPS. I figure that since a DMZ is a > insecure place, no data should reside in it. I'm puzzled. How will I store > those files without having them in the DMZ? > > I'm starting to look at the possibility to use RADIUS. I saw one of your > (I'm assuming since a Anthony from airdesk.co.uk at the time) previously > answer about the matter. So far, I understand that I will need a RADIUS > server in my internal domain and a RADIUS proxy in my DMZ. But I'm still > skeptical about this because I see another flaw in my DMZ. > > What a headache ... > > Thank you for your answer, > > "Anthony [MVP]" wrote: > >> r14, >> I don't think that's really what you would want to do. >> >> Leaving aside the idea of the Trust for a moment, the idea is that hosts >> in >> the DMZ (which could be compromised) should have no or limited access to >> the >> LAN. Limited access would means specified ports to specified hosts. For >> example LDAP or Radius or SecurID. >> >> For the DMZ to get be able to a Share on the internal network is probably >> not desirable. >> >> It sounds as though what you would do is to copy out your data from the >> internal network to the DMZ. This requires no inbound traffic to be >> allowed. >> You could use FTP or Robocopy to do this. The copy needs to use >> credentials >> that the DMZ recognises, e.g a local account on the DMZ server, or else >> you >> can use a one way trust where DMZ servers trust internal server. >> Hope that helps, >> Anthony >> http://www.airdesk.com >> >> >> >> >> "r14edge" <> wrote in message >> news:E7D9C5ED-97A9-4323-A9F5-... >> > thanks for the reply Anthony. As for now, I'm able to log in my >> > internal >> > domain using dmz domain credential. This prove me that my trust work, >> > but >> > for >> > some reason, my web servers in my DMZ are unable to get on a share in >> > my >> > internal network. I'm starting to believe I got this concept of trust >> > all >> > wrong. Furthermore, how can the concept of pass-through >> > authentification >> > worked without a trust between two domains? >> > >> > What I'm trying to achieve with my DMZ is to be able to have web in a >> > DMZ >> > using a single storage area located in a internal network. Is there >> > other >> > way >> > to do this? >> > >> > thanks >> > >> > >> > "Anthony [MVP]" wrote: >> > >> >> Fred, >> >> If the DMZ domain trusts the internal domain you can Push files out to >> >> it. >> >> If the internal domain trusts the DMZ domain (not what you want), the >> >> dmz >> >> can Pull files out from it. >> >> Ideally you would want the DMZ to have no inbound access to the LAN, >> >> so >> >> you >> >> would want to push files out to the DMZ. >> >> Anthony, >> >> http://www.airdesk.com >> >> >> >> >> >> >> >> >> >> "r14edge" <> wrote in message >> >> news:A7DD8E40-843A-4BFB-8057-... >> >> > Hello, >> >> > >> >> > I'm setting up a DMZ for my company and I'm facing a big problem. I >> >> > planned my DMZ on using a remote file storage located in my internal >> >> > network >> >> > to host my web files. I've build my DMZ in a new domain and I have >> >> > setup a >> >> > trust relationship between my internal domain and my DMZ domain. The >> >> > trust >> >> > is >> >> > one-way where the incoming trust is my internal domain and my >> >> > outgoing >> >> > trust >> >> > is my DMZ domain. On my remote file server, I'm able to see the >> >> > account >> >> > of >> >> > my >> >> > DMZ domain. I've set up the ACL on my share to be use by a specific >> >> > account >> >> > in the DMZ without any problem. >> >> > >> >> > Now, from any server in my DMZ, I'm able to get on the root >> >> > (\\10.0.0.0) >> >> > of >> >> > my share but when I click on the share itself, I got a access denied >> >> > message. >> >> > I notice in the security log of the remote server that any DMZ >> >> > servers >> >> > that >> >> > tries to go on the remote file server, are logged under NT >> >> > AUTHORITY\ANONYMOUS LOGON. >> >> > >> >> > What am I missing here? I believe that computers in my DMZ should >> >> > log >> >> > under >> >> > their name in the logs files, right? When I switch the trust >> >> > relationship, >> >> > it's working like a charm, but I'm exposing my internal Domain to my >> >> > DMZ >> >> > and >> >> > I don't want that. >> >> > >> >> > What can I do to solve this problem? >> >> > >> >> > Thank you for your replies, >> >> > >> >> > Fred >> >> >> >> |
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r14edge
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Hello Anthony,
My clients will use a portal programmed in html, to drop documents for us. A HTTPS connection will be use to transfered the documents. We decided to build that portal because past experience with FTP and sFTP has proven to us to be painful. Our clients are not too tech savvy and the use of any FTP clients fall ultimately on our desk. So, it was decided to simplified the process. Clients will log on a portal where they will be able to get or to drop documents. That being said, and with the previous input you gave me, a file storage will be needed in the DMZ. That storage area will store web applications and will store files for / from clients. It seems the only way to ensure a more secure DMZ. Applications files will be transfered when needed and clients files will be process through some sort of mecanism where files dropped by the client will be retransfered in the internal network and files coming from the internal network should have a expiration date on it. Is this a good plan? thnaks "Anthony [MVP]" wrote: > Fred, > That's a good question about data in the DMZ. But if you figure your DMZ is > compromised so they have access to the data, then how secure would the data > be on the LAN that you have given the DMZ access to? > A lot of this is theoretical. If you follow good practice then the data on > the DMZ should be reasonably safe. People put databases on the DMZ. They > just don't allow access into the LAN. > The thing about Radius and LDAP authentication is that they have a simple > yes/no authentication protocol so they don't require extensive access to the > LAN. RPC (the normal windows mechanism) is LAN based and assumes open > access. > Can you explain what you mean by "our client will use to transfer files by > HTTPS". I suspect there is an easier answer in there somewhere, > Anthony, > http:/www.airdesk.co.uk > > > > "r14edge" <> wrote in message > news:1FD7D541-D041-43B8-862C-... > > The main reason why I wish to use a share on my internal network is coming > > from what my programmers wish to do. They are building a website that our > > client will use to transfer files by HTTPS. I figure that since a DMZ is a > > insecure place, no data should reside in it. I'm puzzled. How will I store > > those files without having them in the DMZ? > > > > I'm starting to look at the possibility to use RADIUS. I saw one of your > > (I'm assuming since a Anthony from airdesk.co.uk at the time) previously > > answer about the matter. So far, I understand that I will need a RADIUS > > server in my internal domain and a RADIUS proxy in my DMZ. But I'm still > > skeptical about this because I see another flaw in my DMZ. > > > > What a headache ... > > > > Thank you for your answer, > > > > "Anthony [MVP]" wrote: > > > >> r14, > >> I don't think that's really what you would want to do. > >> > >> Leaving aside the idea of the Trust for a moment, the idea is that hosts > >> in > >> the DMZ (which could be compromised) should have no or limited access to > >> the > >> LAN. Limited access would means specified ports to specified hosts. For > >> example LDAP or Radius or SecurID. > >> > >> For the DMZ to get be able to a Share on the internal network is probably > >> not desirable. > >> > >> It sounds as though what you would do is to copy out your data from the > >> internal network to the DMZ. This requires no inbound traffic to be > >> allowed. > >> You could use FTP or Robocopy to do this. The copy needs to use > >> credentials > >> that the DMZ recognises, e.g a local account on the DMZ server, or else > >> you > >> can use a one way trust where DMZ servers trust internal server. > >> Hope that helps, > >> Anthony > >> http://www.airdesk.com > >> > >> > >> > >> > >> "r14edge" <> wrote in message > >> news:E7D9C5ED-97A9-4323-A9F5-... > >> > thanks for the reply Anthony. As for now, I'm able to log in my > >> > internal > >> > domain using dmz domain credential. This prove me that my trust work, > >> > but > >> > for > >> > some reason, my web servers in my DMZ are unable to get on a share in > >> > my > >> > internal network. I'm starting to believe I got this concept of trust > >> > all > >> > wrong. Furthermore, how can the concept of pass-through > >> > authentification > >> > worked without a trust between two domains? > >> > > >> > What I'm trying to achieve with my DMZ is to be able to have web in a > >> > DMZ > >> > using a single storage area located in a internal network. Is there > >> > other > >> > way > >> > to do this? > >> > > >> > thanks > >> > > >> > > >> > "Anthony [MVP]" wrote: > >> > > >> >> Fred, > >> >> If the DMZ domain trusts the internal domain you can Push files out to > >> >> it. > >> >> If the internal domain trusts the DMZ domain (not what you want), the > >> >> dmz > >> >> can Pull files out from it. > >> >> Ideally you would want the DMZ to have no inbound access to the LAN, > >> >> so > >> >> you > >> >> would want to push files out to the DMZ. > >> >> Anthony, > >> >> http://www.airdesk.com > >> >> > >> >> > >> >> > >> >> > >> >> "r14edge" <> wrote in message > >> >> news:A7DD8E40-843A-4BFB-8057-... > >> >> > Hello, > >> >> > > >> >> > I'm setting up a DMZ for my company and I'm facing a big problem. I > >> >> > planned my DMZ on using a remote file storage located in my internal > >> >> > network > >> >> > to host my web files. I've build my DMZ in a new domain and I have > >> >> > setup a > >> >> > trust relationship between my internal domain and my DMZ domain. The > >> >> > trust > >> >> > is > >> >> > one-way where the incoming trust is my internal domain and my > >> >> > outgoing > >> >> > trust > >> >> > is my DMZ domain. On my remote file server, I'm able to see the > >> >> > account > >> >> > of > >> >> > my > >> >> > DMZ domain. I've set up the ACL on my share to be use by a specific > >> >> > account > >> >> > in the DMZ without any problem. > >> >> > > >> >> > Now, from any server in my DMZ, I'm able to get on the root > >> >> > (\\10.0.0.0) > >> >> > of > >> >> > my share but when I click on the share itself, I got a access denied > >> >> > message. > >> >> > I notice in the security log of the remote server that any DMZ > >> >> > servers > >> >> > that > >> >> > tries to go on the remote file server, are logged under NT > >> >> > AUTHORITY\ANONYMOUS LOGON. > >> >> > > >> >> > What am I missing here? I believe that computers in my DMZ should > >> >> > log > >> >> > under > >> >> > their name in the logs files, right? When I switch the trust > >> >> > relationship, > >> >> > it's working like a charm, but I'm exposing my internal Domain to my > >> >> > DMZ > >> >> > and > >> >> > I don't want that. > >> >> > > >> >> > What can I do to solve this problem? > >> >> > > >> >> > Thank you for your replies, > >> >> > > >> >> > Fred > >> >> > >> >> |
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Anthony [MVP]
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Fred,
I understand the bit about using an https portal for clients to upload files to you. I'm not sure I fully understand the rest. Are the clients transferring files straight into the live service on the DMZ; or are they transferring them to you to do something with? Either way, I don't see any reason for your internal network to trust the DMZ Anthony http://www.airdesk.com "r14edge" <> wrote in message news:BDC390A7-89AA-49D9-9938-... > Hello Anthony, > > My clients will use a portal programmed in html, to drop documents for us. > A > HTTPS connection will be use to transfered the documents. We decided to > build > that portal because past experience with FTP and sFTP has proven to us to > be > painful. Our clients are not too tech savvy and the use of any FTP clients > fall ultimately on our desk. So, it was decided to simplified the process. > Clients will log on a portal where they will be able to get or to drop > documents. > > That being said, and with the previous input you gave me, a file storage > will be needed in the DMZ. That storage area will store web applications > and > will store files for / from clients. It seems the only way to ensure a > more > secure DMZ. Applications files will be transfered when needed and clients > files will be process through some sort of mecanism where files dropped by > the client will be retransfered in the internal network and files coming > from > the internal network should have a expiration date on it. > > Is this a good plan? > > thnaks > > > "Anthony [MVP]" wrote: > >> Fred, >> That's a good question about data in the DMZ. But if you figure your DMZ >> is >> compromised so they have access to the data, then how secure would the >> data >> be on the LAN that you have given the DMZ access to? >> A lot of this is theoretical. If you follow good practice then the data >> on >> the DMZ should be reasonably safe. People put databases on the DMZ. They >> just don't allow access into the LAN. >> The thing about Radius and LDAP authentication is that they have a simple >> yes/no authentication protocol so they don't require extensive access to >> the >> LAN. RPC (the normal windows mechanism) is LAN based and assumes open >> access. >> Can you explain what you mean by "our client will use to transfer files >> by >> HTTPS". I suspect there is an easier answer in there somewhere, >> Anthony, >> http:/www.airdesk.co.uk >> >> >> >> "r14edge" <> wrote in message >> news:1FD7D541-D041-43B8-862C-... >> > The main reason why I wish to use a share on my internal network is >> > coming >> > from what my programmers wish to do. They are building a website that >> > our >> > client will use to transfer files by HTTPS. I figure that since a DMZ >> > is a >> > insecure place, no data should reside in it. I'm puzzled. How will I >> > store >> > those files without having them in the DMZ? >> > >> > I'm starting to look at the possibility to use RADIUS. I saw one of >> > your >> > (I'm assuming since a Anthony from airdesk.co.uk at the time) >> > previously >> > answer about the matter. So far, I understand that I will need a RADIUS >> > server in my internal domain and a RADIUS proxy in my DMZ. But I'm >> > still >> > skeptical about this because I see another flaw in my DMZ. >> > >> > What a headache ... >> > >> > Thank you for your answer, >> > >> > "Anthony [MVP]" wrote: >> > >> >> r14, >> >> I don't think that's really what you would want to do. >> >> >> >> Leaving aside the idea of the Trust for a moment, the idea is that >> >> hosts >> >> in >> >> the DMZ (which could be compromised) should have no or limited access >> >> to >> >> the >> >> LAN. Limited access would means specified ports to specified hosts. >> >> For >> >> example LDAP or Radius or SecurID. >> >> >> >> For the DMZ to get be able to a Share on the internal network is >> >> probably >> >> not desirable. >> >> >> >> It sounds as though what you would do is to copy out your data from >> >> the >> >> internal network to the DMZ. This requires no inbound traffic to be >> >> allowed. >> >> You could use FTP or Robocopy to do this. The copy needs to use >> >> credentials >> >> that the DMZ recognises, e.g a local account on the DMZ server, or >> >> else >> >> you >> >> can use a one way trust where DMZ servers trust internal server. >> >> Hope that helps, >> >> Anthony >> >> http://www.airdesk.com >> >> >> >> >> >> >> >> >> >> "r14edge" <> wrote in message >> >> news:E7D9C5ED-97A9-4323-A9F5-... >> >> > thanks for the reply Anthony. As for now, I'm able to log in my >> >> > internal >> >> > domain using dmz domain credential. This prove me that my trust >> >> > work, >> >> > but >> >> > for >> >> > some reason, my web servers in my DMZ are unable to get on a share >> >> > in >> >> > my >> >> > internal network. I'm starting to believe I got this concept of >> >> > trust >> >> > all >> >> > wrong. Furthermore, how can the concept of pass-through >> >> > authentification >> >> > worked without a trust between two domains? >> >> > >> >> > What I'm trying to achieve with my DMZ is to be able to have web in >> >> > a >> >> > DMZ >> >> > using a single storage area located in a internal network. Is there >> >> > other >> >> > way >> >> > to do this? >> >> > >> >> > thanks >> >> > >> >> > >> >> > "Anthony [MVP]" wrote: >> >> > >> >> >> Fred, >> >> >> If the DMZ domain trusts the internal domain you can Push files out >> >> >> to >> >> >> it. >> >> >> If the internal domain trusts the DMZ domain (not what you want), >> >> >> the >> >> >> dmz >> >> >> can Pull files out from it. >> >> >> Ideally you would want the DMZ to have no inbound access to the >> >> >> LAN, >> >> >> so >> >> >> you >> >> >> would want to push files out to the DMZ. >> >> >> Anthony, >> >> >> http://www.airdesk.com >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> "r14edge" <> wrote in message >> >> >> news:A7DD8E40-843A-4BFB-8057-... >> >> >> > Hello, >> >> >> > >> >> >> > I'm setting up a DMZ for my company and I'm facing a big problem. >> >> >> > I >> >> >> > planned my DMZ on using a remote file storage located in my >> >> >> > internal >> >> >> > network >> >> >> > to host my web files. I've build my DMZ in a new domain and I >> >> >> > have >> >> >> > setup a >> >> >> > trust relationship between my internal domain and my DMZ domain. >> >> >> > The >> >> >> > trust >> >> >> > is >> >> >> > one-way where the incoming trust is my internal domain and my >> >> >> > outgoing >> >> >> > trust >> >> >> > is my DMZ domain. On my remote file server, I'm able to see the >> >> >> > account >> >> >> > of >> >> >> > my >> >> >> > DMZ domain. I've set up the ACL on my share to be use by a >> >> >> > specific >> >> >> > account >> >> >> > in the DMZ without any problem. >> >> >> > >> >> >> > Now, from any server in my DMZ, I'm able to get on the root >> >> >> > (\\10.0.0.0) >> >> >> > of >> >> >> > my share but when I click on the share itself, I got a access >> >> >> > denied >> >> >> > message. >> >> >> > I notice in the security log of the remote server that any DMZ >> >> >> > servers >> >> >> > that >> >> >> > tries to go on the remote file server, are logged under NT >> >> >> > AUTHORITY\ANONYMOUS LOGON. >> >> >> > >> >> >> > What am I missing here? I believe that computers in my DMZ should >> >> >> > log >> >> >> > under >> >> >> > their name in the logs files, right? When I switch the trust >> >> >> > relationship, >> >> >> > it's working like a charm, but I'm exposing my internal Domain to >> >> >> > my >> >> >> > DMZ >> >> >> > and >> >> >> > I don't want that. >> >> >> > >> >> >> > What can I do to solve this problem? >> >> >> > >> >> >> > Thank you for your replies, >> >> >> > >> >> >> > Fred >> >> >> >> >> >> |
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r14edge
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Hi Anthony,
My clients will transfer live on the DMZ. I've talk to the programmers of the portal and they agreed to modified their codes to have a storage zone in the DMZ. That zone will be a temporary zone and another zone will be dedicated to applications files. My programmers will access them through FTP. As for the client files, a mecanish will be put in place to transfert the files back in the Internal network by either FTP or HTTPS. No port will be open on the DMZ through my internal network, only FTP and / or HTTPS for the internal to the DMZ. I guess I'll have a pretty tight DMZ from there. Thanks for the advice, Fred Your advice "Anthony [MVP]" wrote: > Fred, > I understand the bit about using an https portal for clients to upload files > to you. > I'm not sure I fully understand the rest. > Are the clients transferring files straight into the live service on the > DMZ; or are they transferring them to you to do something with? > Either way, I don't see any reason for your internal network to trust the > DMZ > Anthony > http://www.airdesk.com > > "r14edge" <> wrote in message > news:BDC390A7-89AA-49D9-9938-... > > Hello Anthony, > > > > My clients will use a portal programmed in html, to drop documents for us. > > A > > HTTPS connection will be use to transfered the documents. We decided to > > build > > that portal because past experience with FTP and sFTP has proven to us to > > be > > painful. Our clients are not too tech savvy and the use of any FTP clients > > fall ultimately on our desk. So, it was decided to simplified the process. > > Clients will log on a portal where they will be able to get or to drop > > documents. > > > > That being said, and with the previous input you gave me, a file storage > > will be needed in the DMZ. That storage area will store web applications > > and > > will store files for / from clients. It seems the only way to ensure a > > more > > secure DMZ. Applications files will be transfered when needed and clients > > files will be process through some sort of mecanism where files dropped by > > the client will be retransfered in the internal network and files coming > > from > > the internal network should have a expiration date on it. > > > > Is this a good plan? > > > > thnaks > > > > > > "Anthony [MVP]" wrote: > > > >> Fred, > >> That's a good question about data in the DMZ. But if you figure your DMZ > >> is > >> compromised so they have access to the data, then how secure would the > >> data > >> be on the LAN that you have given the DMZ access to? > >> A lot of this is theoretical. If you follow good practice then the data > >> on > >> the DMZ should be reasonably safe. People put databases on the DMZ. They > >> just don't allow access into the LAN. > >> The thing about Radius and LDAP authentication is that they have a simple > >> yes/no authentication protocol so they don't require extensive access to > >> the > >> LAN. RPC (the normal windows mechanism) is LAN based and assumes open > >> access. > >> Can you explain what you mean by "our client will use to transfer files > >> by > >> HTTPS". I suspect there is an easier answer in there somewhere, > >> Anthony, > >> http:/www.airdesk.co.uk > >> > >> > >> > >> "r14edge" <> wrote in message > >> news:1FD7D541-D041-43B8-862C-... > >> > The main reason why I wish to use a share on my internal network is > >> > coming > >> > from what my programmers wish to do. They are building a website that > >> > our > >> > client will use to transfer files by HTTPS. I figure that since a DMZ > >> > is a > >> > insecure place, no data should reside in it. I'm puzzled. How will I > >> > store > >> > those files without having them in the DMZ? > >> > > >> > I'm starting to look at the possibility to use RADIUS. I saw one of > >> > your > >> > (I'm assuming since a Anthony from airdesk.co.uk at the time) > >> > previously > >> > answer about the matter. So far, I understand that I will need a RADIUS > >> > server in my internal domain and a RADIUS proxy in my DMZ. But I'm > >> > still > >> > skeptical about this because I see another flaw in my DMZ. > >> > > >> > What a headache ... > >> > > >> > Thank you for your answer, > >> > > >> > "Anthony [MVP]" wrote: > >> > > >> >> r14, > >> >> I don't think that's really what you would want to do. > >> >> > >> >> Leaving aside the idea of the Trust for a moment, the idea is that > >> >> hosts > >> >> in > >> >> the DMZ (which could be compromised) should have no or limited access > >> >> to > >> >> the > >> >> LAN. Limited access would means specified ports to specified hosts. > >> >> For > >> >> example LDAP or Radius or SecurID. > >> >> > >> >> For the DMZ to get be able to a Share on the internal network is > >> >> probably > >> >> not desirable. > >> >> > >> >> It sounds as though what you would do is to copy out your data from > >> >> the > >> >> internal network to the DMZ. This requires no inbound traffic to be > >> >> allowed. > >> >> You could use FTP or Robocopy to do this. The copy needs to use > >> >> credentials > >> >> that the DMZ recognises, e.g a local account on the DMZ server, or > >> >> else > >> >> you > >> >> can use a one way trust where DMZ servers trust internal server. > >> >> Hope that helps, > >> >> Anthony > >> >> http://www.airdesk.com > >> >> > >> >> > >> >> > >> >> > >> >> "r14edge" <> wrote in message > >> >> news:E7D9C5ED-97A9-4323-A9F5-... > >> >> > thanks for the reply Anthony. As for now, I'm able to log in my > >> >> > internal > >> >> > domain using dmz domain credential. This prove me that my trust > >> >> > work, > >> >> > but > >> >> > for > >> >> > some reason, my web servers in my DMZ are unable to get on a share > >> >> > in > >> >> > my > >> >> > internal network. I'm starting to believe I got this concept of > >> >> > trust > >> >> > all > >> >> > wrong. Furthermore, how can the concept of pass-through > >> >> > authentification > >> >> > worked without a trust between two domains? > >> >> > > >> >> > What I'm trying to achieve with my DMZ is to be able to have web in > >> >> > a > >> >> > DMZ > >> >> > using a single storage area located in a internal network. Is there > >> >> > other > >> >> > way > >> >> > to do this? > >> >> > > >> >> > thanks > >> >> > > >> >> > > >> >> > "Anthony [MVP]" wrote: > >> >> > > >> >> >> Fred, > >> >> >> If the DMZ domain trusts the internal domain you can Push files out > >> >> >> to > >> >> >> it. > >> >> >> If the internal domain trusts the DMZ domain (not what you want), > >> >> >> the > >> >> >> dmz > >> >> >> can Pull files out from it. > >> >> >> Ideally you would want the DMZ to have no inbound access to the > >> >> >> LAN, > >> >> >> so > >> >> >> you > >> >> >> would want to push files out to the DMZ. > >> >> >> Anthony, > >> >> >> http://www.airdesk.com > >> >> >> > >> >> >> > >> >> >> > >> >> >> > >> >> >> "r14edge" <> wrote in message > >> >> >> news:A7DD8E40-843A-4BFB-8057-... > >> >> >> > Hello, > >> >> >> > > >> >> >> > I'm setting up a DMZ for my company and I'm facing a big problem. > >> >> >> > I > >> >> >> > planned my DMZ on using a remote file storage located in my > >> >> >> > internal > >> >> >> > network > >> >> >> > to host my web files. I've build my DMZ in a new domain and I > >> >> >> > have > >> >> >> > setup a > >> >> >> > trust relationship between my internal domain and my DMZ domain. > >> >> >> > The > >> >> >> > trust > >> >> >> > is > >> >> >> > one-way where the incoming trust is my internal domain and my > >> >> >> > outgoing > >> >> >> > trust > >> >> >> > is my DMZ domain. On my remote file server, I'm able to see the > >> >> >> > account > >> >> >> > of > >> >> >> > my > >> >> >> > DMZ domain. I've set up the ACL on my share to be use by a > >> >> >> > specific > >> >> >> > account > >> >> >> > in the DMZ without any problem. > >> >> >> > > >> >> >> > Now, from any server in my DMZ, I'm able to get on the root > >> >> >> > (\\10.0.0.0) > >> >> >> > of > >> >> >> > my share but when I click on the share itself, I got a access > >> >> >> > denied > >> >> >> > message. > >> >> >> > I notice in the security log of the remote server that any DMZ > >> >> >> > servers > >> >> >> > that > >> >> >> > tries to go on the remote file server, are logged under NT > >> >> >> > AUTHORITY\ANONYMOUS LOGON. > >> >> >> > > >> >> >> > What am I missing here? I believe that computers in my DMZ should > >> >> >> > log > >> >> >> > under > >> >> >> > their name in the logs files, right? When I switch the trust > >> >> >> > relationship, > >> >> >> > it's working like a charm, but I'm exposing my internal Domain to > >> >> >> > my > >> >> >> > DMZ > >> >> >> > and > >> >> >> > I don't want that. > >> >> >> > > >> >> >> > What can I do to solve this problem? > >> >> >> > > >> >> >> > Thank you for your replies, > >> >> >> > > >> >> >> > Fred > >> >> >> > >> >> >> |
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Anthony [MVP]
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That sounds like a good plan,
Hope it goes well, Anthony http://www.airdesk.com "r14edge" <> wrote in message news:8D87F336-F294-4045-AE5D-... > Hi Anthony, > > My clients will transfer live on the DMZ. I've talk to the programmers > of > the portal and they agreed to modified their codes to have a storage zone > in > the DMZ. That zone will be a temporary zone and another zone will be > dedicated to applications files. My programmers will access them through > FTP. > As for the client files, a mecanish will be put in place to transfert the > files back in the Internal network by either FTP or HTTPS. No port will be > open on the DMZ through my internal network, only FTP and / or HTTPS for > the > internal to the DMZ. I guess I'll have a pretty tight DMZ from there. > > Thanks for the advice, > > Fred > > Your advice > "Anthony [MVP]" wrote: > >> Fred, >> I understand the bit about using an https portal for clients to upload >> files >> to you. >> I'm not sure I fully understand the rest. >> Are the clients transferring files straight into the live service on the >> DMZ; or are they transferring them to you to do something with? >> Either way, I don't see any reason for your internal network to trust the >> DMZ >> Anthony >> http://www.airdesk.com >> >> "r14edge" <> wrote in message >> news:BDC390A7-89AA-49D9-9938-... >> > Hello Anthony, >> > >> > My clients will use a portal programmed in html, to drop documents for >> > us. >> > A >> > HTTPS connection will be use to transfered the documents. We decided to >> > build >> > that portal because past experience with FTP and sFTP has proven to us >> > to >> > be >> > painful. Our clients are not too tech savvy and the use of any FTP >> > clients >> > fall ultimately on our desk. So, it was decided to simplified the >> > process. >> > Clients will log on a portal where they will be able to get or to drop >> > documents. >> > >> > That being said, and with the previous input you gave me, a file >> > storage >> > will be needed in the DMZ. That storage area will store web >> > applications >> > and >> > will store files for / from clients. It seems the only way to ensure a >> > more >> > secure DMZ. Applications files will be transfered when needed and >> > clients >> > files will be process through some sort of mecanism where files dropped >> > by >> > the client will be retransfered in the internal network and files >> > coming >> > from >> > the internal network should have a expiration date on it. >> > >> > Is this a good plan? >> > >> > thnaks >> > >> > >> > "Anthony [MVP]" wrote: >> > >> >> Fred, >> >> That's a good question about data in the DMZ. But if you figure your >> >> DMZ >> >> is >> >> compromised so they have access to the data, then how secure would the >> >> data >> >> be on the LAN that you have given the DMZ access to? >> >> A lot of this is theoretical. If you follow good practice then the >> >> data >> >> on >> >> the DMZ should be reasonably safe. People put databases on the DMZ. >> >> They >> >> just don't allow access into the LAN. >> >> The thing about Radius and LDAP authentication is that they have a >> >> simple >> >> yes/no authentication protocol so they don't require extensive access >> >> to >> >> the >> >> LAN. RPC (the normal windows mechanism) is LAN based and assumes open >> >> access. >> >> Can you explain what you mean by "our client will use to transfer >> >> files >> >> by >> >> HTTPS". I suspect there is an easier answer in there somewhere, >> >> Anthony, >> >> http:/www.airdesk.co.uk >> >> >> >> >> >> >> >> "r14edge" <> wrote in message >> >> news:1FD7D541-D041-43B8-862C-... >> >> > The main reason why I wish to use a share on my internal network is >> >> > coming >> >> > from what my programmers wish to do. They are building a website >> >> > that >> >> > our >> >> > client will use to transfer files by HTTPS. I figure that since a >> >> > DMZ >> >> > is a >> >> > insecure place, no data should reside in it. I'm puzzled. How will I >> >> > store >> >> > those files without having them in the DMZ? >> >> > >> >> > I'm starting to look at the possibility to use RADIUS. I saw one of >> >> > your >> >> > (I'm assuming since a Anthony from airdesk.co.uk at the time) >> >> > previously >> >> > answer about the matter. So far, I understand that I will need a >> >> > RADIUS >> >> > server in my internal domain and a RADIUS proxy in my DMZ. But I'm >> >> > still >> >> > skeptical about this because I see another flaw in my DMZ. >> >> > >> >> > What a headache ... >> >> > >> >> > Thank you for your answer, >> >> > >> >> > "Anthony [MVP]" wrote: >> >> > >> >> >> r14, >> >> >> I don't think that's really what you would want to do. >> >> >> >> >> >> Leaving aside the idea of the Trust for a moment, the idea is that >> >> >> hosts >> >> >> in >> >> >> the DMZ (which could be compromised) should have no or limited >> >> >> access >> >> >> to >> >> >> the >> >> >> LAN. Limited access would means specified ports to specified hosts. >> >> >> For >> >> >> example LDAP or Radius or SecurID. >> >> >> >> >> >> For the DMZ to get be able to a Share on the internal network is >> >> >> probably >> >> >> not desirable. >> >> >> >> >> >> It sounds as though what you would do is to copy out your data from >> >> >> the >> >> >> internal network to the DMZ. This requires no inbound traffic to be >> >> >> allowed. >> >> >> You could use FTP or Robocopy to do this. The copy needs to use >> >> >> credentials >> >> >> that the DMZ recognises, e.g a local account on the DMZ server, or >> >> >> else >> >> >> you >> >> >> can use a one way trust where DMZ servers trust internal server. >> >> >> Hope that helps, >> >> >> Anthony >> >> >> http://www.airdesk.com >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> "r14edge" <> wrote in message >> >> >> news:E7D9C5ED-97A9-4323-A9F5-... >> >> >> > thanks for the reply Anthony. As for now, I'm able to log in my >> >> >> > internal >> >> >> > domain using dmz domain credential. This prove me that my trust >> >> >> > work, >> >> >> > but >> >> >> > for >> >> >> > some reason, my web servers in my DMZ are unable to get on a >> >> >> > share >> >> >> > in >> >> >> > my >> >> >> > internal network. I'm starting to believe I got this concept of >> >> >> > trust >> >> >> > all >> >> >> > wrong. Furthermore, how can the concept of pass-through >> >> >> > authentification >> >> >> > worked without a trust between two domains? >> >> >> > >> >> >> > What I'm trying to achieve with my DMZ is to be able to have web >> >> >> > in >> >> >> > a >> >> >> > DMZ >> >> >> > using a single storage area located in a internal network. Is >> >> >> > there >> >> >> > other >> >> >> > way >> >> >> > to do this? >> >> >> > >> >> >> > thanks >> >> >> > >> >> >> > >> >> >> > "Anthony [MVP]" wrote: >> >> >> > >> >> >> >> Fred, >> >> >> >> If the DMZ domain trusts the internal domain you can Push files >> >> >> >> out >> >> >> >> to >> >> >> >> it. >> >> >> >> If the internal domain trusts the DMZ domain (not what you >> >> >> >> want), >> >> >> >> the >> >> >> >> dmz >> >> >> >> can Pull files out from it. >> >> >> >> Ideally you would want the DMZ to have no inbound access to the >> >> >> >> LAN, >> >> >> >> so >> >> >> >> you >> >> >> >> would want to push files out to the DMZ. >> >> >> >> Anthony, >> >> >> >> http://www.airdesk.com >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> "r14edge" <> wrote in message >> >> >> >> news:A7DD8E40-843A-4BFB-8057-... >> >> >> >> > Hello, >> >> >> >> > >> >> >> >> > I'm setting up a DMZ for my company and I'm facing a big >> >> >> >> > problem. >> >> >> >> > I >> >> >> >> > planned my DMZ on using a remote file storage located in my >> >> >> >> > internal >> >> >> >> > network >> >> >> >> > to host my web files. I've build my DMZ in a new domain and I >> >> >> >> > have >> >> >> >> > setup a >> >> >> >> > trust relationship between my internal domain and my DMZ >> >> >> >> > domain. >> >> >> >> > The >> >> >> >> > trust >> >> >> >> > is >> >> >> >> > one-way where the incoming trust is my internal domain and my >> >> >> >> > outgoing >> >> >> >> > trust >> >> >> >> > is my DMZ domain. On my remote file server, I'm able to see >> >> >> >> > the >> >> >> >> > account >> >> >> >> > of >> >> >> >> > my >> >> >> >> > DMZ domain. I've set up the ACL on my share to be use by a >> >> >> >> > specific >> >> >> >> > account >> >> >> >> > in the DMZ without any problem. >> >> >> >> > >> >> >> >> > Now, from any server in my DMZ, I'm able to get on the root >> >> >> >> > (\\10.0.0.0) >> >> >> >> > of >> >> >> >> > my share but when I click on the share itself, I got a access >> >> >> >> > denied >> >> >> >> > message. >> >> >> >> > I notice in the security log of the remote server that any DMZ >> >> >> >> > servers >> >> >> >> > that >> >> >> >> > tries to go on the remote file server, are logged under NT >> >> >> >> > AUTHORITY\ANONYMOUS LOGON. >> >> >> >> > >> >> >> >> > What am I missing here? I believe that computers in my DMZ >> >> >> >> > should >> >> >> >> > log >> >> >> >> > under >> >> >> >> > their name in the logs files, right? When I switch the trust >> >> >> >> > relationship, >> >> >> >> > it's working like a charm, but I'm exposing my internal Domain >> >> >> >> > to >> >> >> >> > my >> >> >> >> > DMZ >> >> >> >> > and >> >> >> >> > I don't want that. >> >> >> >> > >> >> >> >> > What can I do to solve this problem? >> >> >> >> > >> >> >> >> > Thank you for your replies, >> >> >> >> > >> >> >> >> > Fred >> >> >> >> >> >> >> >> |
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