Security Basics mailing list archives
RE:Reflexive firewalls?
From: securitylists () uniontown com
Date: Thu, 27 Dec 2007 13:35:05 -0500 (EST)
What you are describing sounds like "port knocking". Sorry, no links, but Google will certainly help you if you use that phrase. Mark Coleman 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 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? Thanks.
Current thread:
- Reflexive firewalls? Ong Chin Kiat (Dec 27)
- Re: Reflexive firewalls? Danilo Chilene (Dec 27)
- RE: Reflexive firewalls? Tom Corelis (Dec 27)
- Re: Reflexive firewalls? 0x90 (Dec 27)
- RE: Reflexive firewalls? benoni.martin (Dec 28)
- Re: Reflexive firewalls? korozion (Dec 28)
- Re: Reflexive firewalls? Ansgar -59cobalt- Wiechers (Dec 27)
- RE: Reflexive firewalls? Weir, Jason (Dec 28)
- Re: Reflexive firewalls? Nick Owen (Dec 28)
- <Possible follow-ups>
- RE:Reflexive firewalls? securitylists (Dec 27)
- RE: Reflexive firewalls? Jason M. Beauford (Dec 28)
- Re: Reflexive firewalls? nobledark (Dec 28)
- RE: Reflexive firewalls? krymson (Dec 28)
- Re: Reflexive firewalls? Danilo Chilene (Dec 27)