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From: Alex Flex <aflexzor@gmail.com>
To: netfilter@vger.kernel.org
Subject: Quick help with NOTRACK rule
Date: Tue, 13 Aug 2013 16:57:35 -0600	[thread overview]
Message-ID: <520AB9DF.7060207@gmail.com> (raw)

Hello all,

I have a simple ruleset (for testing purposes) iam trying to exclude 
only the SSH service in being tracked at conntrack. I have not been able 
to achieve this.. iam obviously missing something?


#!/bin/bash

#### CLEANUP
/sbin/iptables -P OUTPUT ACCEPT;
/sbin/iptables -P INPUT DROP;
/sbin/iptables -P FORWARD ACCEPT;
/sbin/iptables -F;
/sbin/iptables -X;
### CLEANUP

# DEFAULT POLICIES
/sbin/iptables -P INPUT DROP
/sbin/iptables -P FORWARD DROP
/sbin/iptables -P OUTPUT ACCEPT

# LOOP BACK ALLOWED
/sbin/iptables -A INPUT  -i lo -j ACCEPT
/sbin/iptables -A OUTPUT -o lo -j ACCEPT

#KEEP STATE BOTH INPUT / OUTPUT (STATEFULL FIREWALL)
/sbin/iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
/sbin/iptables -A OUTPUT -m conntrack --ctstate ESTABLISHED,RELATED -j 
ACCEPT

iptables -t raw -A OUTPUT -p tcp --sport 22 -j NOTRACK

iptables -A INPUT -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -p tcp --dport 5666 -j ACCEPT


After applying the above, and reconnecting via ssh to the machine i 
still see this in the table:

ipv4     2 tcp      6 185 ESTABLISHED src=221.199.62.74 
dst=26.38.165.111 sport=1063 dport=22 src=26.38.165.111 
dst=221.199.62.74 sport=22 dport=1063 [ASSURED] mark=0 secmark=0 use=2


I also tried adding one more rule iptables -t raw -A INPUT -p tcp 
--sport 22 -j NOTRACK  but i get
iptables: No chain/target/match by that name.


Thanks
Alex



             reply	other threads:[~2013-08-13 22:57 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-13 22:57 Alex Flex [this message]
2013-08-14  7:57 ` Quick help with NOTRACK rule Pascal Hambourg

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