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| Subject: | Re: Reflexive firewalls? |
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| Date: | Fri, 28 Dec 2007 09:03:00 -0500 |
Sounds a bit like "port-knocking" or the newer version, "Single Packet Auth" (SPA). There is a app called fwknop that does this - google for the site, I don't have it in front of me right now. - Nd On Thu, 27 Dec 2007 13:02:55 -0500 Danilo Chilene <dchilene@impsat.com> wrote:
I know how do this with PF. Don't have any idea with iptables. :( Ong Chin Kiat wrote:Hi list, I've recently used an SSH server that had an interesting authentication mechanism. You first had to telnet to the machineon acertain port. After doing this (it will just time out - noprompt),you then SSH to the server in question. The telnet step has tobecarried out, if not SSH will just time out. My question is, is this called reflexive firewalling, and can I duplicate this with iptables? Thanks.-- Danilo F. Chilene Especialista SO Global Crossing Limited Tel.: (55 11) 3957-2945 Cel.: (55 11) 8231-1851 danilo.chilene@globalcrossing.com www.globalcrossing.com
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