I used to setup my RedHat 6.2 to share my internet access for a few
machine. Now I upgraded to RedHat 7.1 and it seems that there are many
things new. First, the RedHat installation asked me to choose
High/Medium/No firewall setup. Now I run /sbin/setup and it shows that I
have chosen "High" level firewall. Well! I change it to medium, no or
customize, and it won't save my setting. I find my machine still deny
all in-coming request (ping or ssh, etc. from another machine). And when
I run /sbin/setup again, it show "High" again.
What configuration file can I touch to set the config myself? I found the
/etc/sysconfig/ipchains to be suspect. But don't know how to manage it.
(I tried to change the reject to accept, then the whole file disappeared
Can someone provide some links on the firewall/routing setting on RedHat 7.1?
Thanks a lot!