Carlos Santana wrote:
Hi,
I would like to get some inputs on how to configure iptables. I have
referred to CentOS wiki http://wiki.centos.org/HowTos/Network/IPTables
and it has been very helpful. I have configured iptables with the help
of this tutorial, but I haven't understood few things about default
firewall config.
- What does 'RH-Firewall-1-INPUT' chain means? This also seems to be a
predefined chain, although not mentioned in wiki.
- The wiki page approach is to flush existing rules and then add
required rules to iptables. Is it possible to add/append required
rules without flushing existing set of rules? Not sure, but I think
this is where 'RH-Firewall-1-INPUT' chain comes into picture (user
defined rules).
Any explanation or resource link on this would be really helpful.
Try using webmin - there are rpm available for it and the interface
helps deal with the cryptic items that make up an iptable filter.
The reason for the RH-Firewall-1-INPUT chain means you can use the same
rule set for multiple items - i.e. both input and forward.
Thanks,
CS.
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