iptables problem when booting up

[Julio Gruskin - PWeb ONline!]

I built the iptables ruleset (/etc/sysconfig/iptables) in my RH7.2. It seems
to work okay when booting my system as it shows when 'iptables -L -n' but
some rules are not okay, I can't connect to the internet from my internal
network even though the rule '-A INPUT -s 192.168.1.0/255.255.255.0 -i
eth0 -j ACCEPT' is placed. The weird thing is that when I run 'service
iptables restart' it restarts the firewall rules and the problem is fixed.