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Old 11-23-2009, 01:29 AM   #1
johnh10000
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idiot firewall (i think) question


Well I'm trying to get nx to work, I thought, check out ssh locally first.
However I get this. the router port is open. I have changed services. What have I forgoten?

Code:
root@tux:/etc# iptables -A INPUT -p tcp --destination-port 92 -j ACCEPT
root@tux:/etc# iptables -A INPUT -p udp --destination-port 92 -j ACCEPT
root@tux:/etc# iptables -A OUTPUT -p tcp --source-port 92 -j ACCEPT
root@tux:/etc# iptables -A OUTPUT -p udp --source-port 92 -j ACCEPT
root@tux:/etc# ssh tux.isa-geek.org
ssh: connect to host tux.isa-geek.org port 92: Connection refused
 
Old 11-23-2009, 04:26 AM   #2
chiragrk
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Is there anything configured to listen on port 92? Do a `netstat -antp | grep 92` and see if there's really anything on this port. "connection refused" need not _always_ be because of iptables settings.
 
Old 11-23-2009, 04:33 AM   #3
linuxlover.chaitanya
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If you have configured iptables set to accept only the configured connections and the default policy is set to reject, then you will have to explicitly accept the ssh connections.
The other reason could be that ssh service is not running. Start it and see it makes any difference.
Also see if you have tcpwrappers configured to deny or accept the ssh connections.
Look at /etc/hosts.allow and /etc/hosts.deny files.
 
Old 11-23-2009, 04:34 AM   #4
zhjim
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I bet on the two OUTPUT lines. I doubt that your origin will be from the 92 port when you connect to a ssh server on a nother machine.
Also tweakable in the kernel normaly outgoing connections take on a random port between 1024:65535.
Try this one
Code:
root@tux:/etc# iptables -A INPUT -p tcp --destination-port 92 -j ACCEPT
root@tux:/etc# iptables -A INPUT -p udp --destination-port 92 -j ACCEPT
root@tux:/etc# iptables -A OUTPUT -p tcp --destination-port 92 -j ACCEPT
root@tux:/etc# iptables -A OUTPUT -p udp --destination-port 92 -j ACCEPT
If you changed the service in /etc/servicesyou could also go along with
Code:
root@tux:/etc# iptables -A OUTPUT -p udp --destination-port ssh -j ACCEPT
Cheers Zhjim
 
Old 11-23-2009, 05:57 AM   #5
johnh10000
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Embarressed

<Embarressed> Stupid me! My try installing ssh BEFORE trying to connect to it!

Sorry for bothering you all.
 
  


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