Closing UDP ports in RHL 8.0
I have set up RHL 8.0 with DHCP and now have been messing with IPTABLES and such to secure the server. I have MASQUERADING set up for my internal LAN. I have changed the policy for input forward and output to drop (does reject not work? I can't use reject it says it isn't a recognized command). I run port scanners from various utilities not on the RHL machine. They always show UDP ports, but everything else shows locked down (TCP for example never shows up).
I have even made chains to deny udp entire range rules and they still show up... what is up with the UDP ports and not shutting down??????