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Old 08-20-2001, 09:16 PM   #1
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Registered: Aug 2001
Location: Sydney Australia
Distribution: Mandrake 7.2
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Exclamation ipmasqadm portfwd troubleshoot

Currently having problems with ipmasqadm portfwd. Have it successfully transferring some pop requests.
ipmasqadm portfw -a -P tcp external.ip 110 -R 110.
But am having problems getting https successfully running.
Trying to pass it through to a NetWAre box that is running my web server to access GRoupwise client, that I can see internally, and yes it is through https, Netware can issue certificates.
ipmasqadm portfw -a -P tcp external.ip 443 -R 443
but no joy, have had this working successfully before. doing tcpdump on the internal nic of my firewall I can see the incoming packets come through, but not go back out again. These ports are not being blocked and I am using ipchains as my firewall. Am also using MASQ as below and forwarding enabled.
echo "1" > /proc/sys/net/ipv4/ip_forward
ipchains -A forward -s -j MASQ
Have also tried this with smtp trying to pass it through to my surf control box w2k which scans incoming email, but with no joy. Seems to work ok when I pass it straight through to the mail server, but not to w2k, HAve had it working successfully before. Thoughts are for the win2k that it may be not accepting packets from outside, denying open relay?
Any thoughts or suggestions on these two?
Any suggetions welcome.
Thanks folks


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