Opening a port is not working

[jay4eva]

Hi everyone,

we are trying open the port 4430 and it is not work for some reason.

IPTABLES ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 DTra ctstate NEW tcp dpt:4430 .... ACCEPT
IPTABLES ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 JAUW ctstate NEW tcp dpt:4430 .... ACCEPT

what shall we do? please advice. We are running Centos 6.6

[TrevorH]

The default supplied rules end with a -j REJECT so all rules appended after that one will be ignored. Did you just iptables -A INPUT ...? If so then your rule is probably never being reached. Insert it instead using iptables -I INPUT $linenum ...