Mike wrote:
Of course, when I restart, the rule I entered with: iptables -A RH-Firewall-1-INPUT -s 195.225.176.0/24 -j DROP
Um, try using
iptables -I RH-Firewall-1-INPUT -s 195.225.176.0/24 -j DROP
instead and see what that does. That's replacing '-A', which appends the rule to the END of the chain, with '-I', which inserts the rule at the HEAD of the chain.