CentOS

We have some legacy CentOS5.x systems that we are migrating to 7, how do I list all the firewall rules that are in place so that I can apply them once we move them to CentOS7?

You should be able to do less /etc/sysconfig/iptables to get a listing of the rules. There's also iptables -L -n (to show addresses numerically--without -n it tries to look up the names of the addresses