[CentOS] Netfilter fails to filter traffic from a netblock?

Sun Apr 19 16:27:47 UTC 2020
Kenneth Porter <shiva at sewingwitch.com>

--On Sunday, April 19, 2020 10:30 AM -0400 Jeffrey Walton 
<noloader at gmail.com> wrote:

> Ugh, thanks. I did not realize the changes were only temporary.
> What is the recommended way to permanently add a ban rule?

service iptables save

That runs the initscript that knows how to save the running firewall to