Security Basics mailing list archives

Re: Reflexive firewalls?

From: Danilo Chilene <dchilene () impsat com>
Date: Thu, 27 Dec 2007 16:02:55 -0200

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 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.


-- 
Danilo F. Chilene

Especialista SO

Global Crossing Limited

Tel.: (55 11) 3957-2945

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danilo.chilene () globalcrossing com

 
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Att,

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)

(Thread continues...)