mailing list archives
From: Ong Chin Kiat <ong.chinkiat () gmail com>
Date: Fri, 28 Dec 2007 00:23:39 +0800
I've recently used an SSH server that had an interesting authentication
mechanism. You first had to telnet to the machine on a certain port.
After doing this (it will just time out - no prompt), you then SSH to
the server in question. The telnet step has to be carried out, if not
SSH will just time out.
My question is, is this called reflexive firewalling, and can I
duplicate this with iptables?
- Reflexive firewalls? Ong Chin Kiat (Dec 27)