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From: Ulv Michel (ulv.michelebs.de)
Date: Wed Aug 22 2001 - 13:44:45 CDT

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    Hi all,

    I have a very serious problem with SuSEfirewall2 running on a SuSE 7.2
    machine.
    Our network setup is as follows:

    [external] Firewall1 [dmz] Firewall2 [internal]

                            212.189.x.x|----------| 195.145.y.y |------------|192.168.z.z
    -----------------------------| |------------------------------|
    |--------------
                                     eth1|----------|eth0 eth1|------------|eth0

    Firewall2 is working fine thanks to masquerading. The problem with Fw1 is
    that it won't route packages sent from the dmz or the internal network to
    the internet. Allowing the internet access to servers in the dmz is no
    problem but the other way round it simply won't work.
    I'll paste the settings from my firewall2.rc.config:

    FW_DEV_EXT="eth1"

    FW_DEV_DMZ="eth0

    FW_ROUTE="yes"

    FW_MASQUERADE="no"

    FW_AUTOPROTECT_SERVICES="yes

    FW_SERVICES_EXT_TCP="53 25 ssh"
    FW_SERVICES_EXT_UDP="53 25 ssh"

    # Common: smtp domain
    FW_SERVICES_DMZ_TCP="ssh 53 25
    # Common: domain
    FW_SERVICES_DMZ_UDP="ssh 53 25
    FW_TRUSTED_NETS=""

    FW_SERVICE_AUTODETECT="no"
    FW_SERVICE_DNS="yes"
    #DMZ FORWARDS
    FW_FORWARD="0/0,195.145.238.0/24,tcp,80 0/0,195.145.238.0/24,udp,80"

    all other things are left untouched.

    In die /var/log/firewall are messages like

    Aug 22 18:00:02 mail kernel: SuSE-FW-DROP-DEFAULTIN=eth0 OUT=eth1
    SRC=195.145.238.x DST=194.246.y.y LEN=59 ...

    I want to allow machines in the dmz to access all machines in the internet
    without restrictions. How do I do this? What's wrong in my config?

    Thanks in advance

    Cheers

    Ulv

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