[Cialug] Port Forwarding
L. V. Lammert
lvl at omnitec.net
Fri Oct 25 14:12:02 CDT 2013
Ran into an interesting problem today, .. on BSD and CentOS 5.4, when a
reverse SSH tunnel is setup it binds to all IPs on the host:
tcp 0 0 *.2210 *.* LISTEN
tcp6 0 0 *.2210 *.* LISTEN
With a more modern Linux, the *SAME* command binds to 127.0.0.1 ONLY:
tcp 0 0 127.0.0.1:2205 0.0.0.0:* LISTEN
tcp 0 0 ::1:2205 :::* LISTEN
What must be done on a modern Linux kernel so that incoming connections
can also use the port? Can't figure out how to Duck for the problem, ..
Thanks!
Lee
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