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From: Michael Boettjer (michael_at_boettjer.org)
Date: Sun Oct 13 2002 - 07:24:41 CDT

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    Hi there,

    i use SuSEfirewall2 on a SuSE 7.2-Gateway.
    The Firewall has 3 Interfaces - one in direction of the internet (official
    IP), one to the inner-LAN (192.168.20.x) and one to the DMZ (192.168.70.x).
    The Computer in the DMZ (Webserver) has an internal IP-Adress
    (192.168.70.y), so i have to port-masquerade.
    The inner-LAN-Clients can reach the Webserver because i'm using the
    "FW_FORWARD"-Parameter in SuSEfirewall-Config-File. One of the entries is
    "192.168.20.0/24,192.168.70.10,tcp,80".

    All works fine.
    But now i want to add a second Server (Mail) to the DMZ. I added the
    appropriate entry to the FW-FORWARD-Parameter. I can ping the two Servers
    from the firewall succesful.
    But from an inner-LAN-Client i can only reach the Webserver, but not the
    Mailserver. Neither a ping works still a telnet to the SMTP-Port. The
    Firewall-Logs relative to DENYs or so what is empty.

    But why?
    When i add the Mailserver to the "FW_FORWARD_MASQ"-Parameter, i can reach
    the Box from the internet without problems.

    Thanks in advance for help.

    Michael

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