[H-GEN] Firewall with Red Hat 6.1

Willie Yeo willie at ssc.qld.edu.au
Wed May 31 06:20:01 EDT 2000


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On Wed, 31 May 2000, David Duffy wrote:

> Firstly, thanks to those that pointed me in the right direction
> with sorting file permission problems with my vfat hard drive.
> Now... I've been banging my head against the wall trying to
> figure out how to implement a firewall my Red Hat 6.1 box.
> It's running a proxy (Squid) but I want to be able to block off
> some other ports that aren't mentioned in the "inetd.conf" file.
> Can anyone that knows Red Hat tell me how to do it using
> the "linuxconf" utility? I tried but failed. (I even read heaps!)
> Am I barking up the wrong tree totally?  Any ideas please?

	Use IPCHAINS in RedHat 6.1. Deny access to ALL ports and then
allow those that you want to come in.

	/sbin/ipchains

	ipchains -P input DENY

	ipchains -A input -p tcp -s 0/0 (port no or range) -j ACCEPT

:----------------------------------------------------------------------:
 Willie Yeo                      |
 CNA, BIT-in-progress            |  :                                :
 IT Manager			 |         This space for hire !
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 Coomera, Gold Coast,            |  :                                :
 AUSTRALIA                       |


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