[CentOS] [SOLVED] iptables rule question for Centos 5

Fri Aug 3 20:25:22 UTC 2012
Blackburn, Marvin <mblackburn at glenraven.com>

We have a simple configuration so we could get by with this

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j
ACCEPT
-A RH-Firewall-1-INPUT -s "SOURCIPADDRESS"  -j REJECT --reject-with
icmp-host-prohibited

it doesn't scale well but servies the purpose.



_____________________________________
"He's no failure. He's not dead yet."
William Lloyd George


-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Steve Clark
Sent: Thursday, August 02, 2012 1:17 PM
To: CentOS mailing list
Cc: Blackburn, Marvin
Subject: Re: [CentOS] iptables rule question for Centos 5

On 08/02/2012 01:06 PM, Blackburn, Marvin wrote:
> I have a server that allows incoming traffic for ssh and some other
> things.
>
> I need to set up a rule that will drop/reject all traffic from a
> particular server except ssh.
>
> How can I do that.
>
>   
>
>   
>
> _____________________________________
> "He's no failure. He's not dead yet."
> William Lloyd George
>
>   
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
>
Something like this first in your ruleset:
-A INPUT -i eth0 -p tcp -s 10.0.1.0/24 --sport 1024:65535 -d
10.0.1.90/32 ! --dport 22 -j DROP

substitute your appropriate ips and interface


-- 
Stephen Clark
*NetWolves*
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com
http://www.netwolves.com
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