vpn + outlook + ICMP

Discussion in 'Server Security' started by robeto, Jun 21, 2004.

  1. robeto

    robeto Guest

    I moved my email server on another site and I reach this site through a vpn
    on a cisco.
    Since that day the 40% of my pc with Outlook 200x onboard stopped to work.
    After many attempts I realized that I have to enable ICMP packet on my
    firewall....
    Why?
    If someone know why, could tell me the number of the ICMP codes to enable?
    Tks a lot.
     
    robeto, Jun 21, 2004
    #1
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  2. robeto

    S. Pidgorny Guest

    Strange: ICMP is not required to run Outlook RPC connections to Exchange
    servers, nor for POP3/IMAP/LDAP/SMTP/Web access.

    However, if you need to learn ICMP codes, use a protocol analyser to find
    out what kind of ICMP traffic is travelling across the tunnel.
     
    S. Pidgorny, Jun 24, 2004
    #2
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