This will do the job:
http://www.untangle.com
"Lanwench [MVP - Exchange]"
< hoo.com> wrote in message
news:e4x%...
> Stockholm <> wrote:
>> We have many interns working in our office who spend part of their
>> time:
>> - visiting interesting web sites
>> - sending email through public accounts such as yahoo
>>
>> What could be suggested to us as a way of controlling internet access
>> and our main concern is that an intern may send private files as an
>> email attachment.
>>
>> Your suggestions would be appreciated.
>
> Without knowing anything about your topology /setup it's difficult to
> guess. Please remember to provide full details when you post (network
> type, etc ... versions, SP levels, etc are also important).
>
> Some basic comments -
> ISA or a proxy server
> Your firewall appliance may be able to do something
> OpenDNS may be an option for you
>