To enable Firebird to listen to the external requests at CentOS 6.x (ip_address:/path/database.fdb), add to the file /etc/sysconfig/iptables the following line:
-A INPUT -m state --state NEW -m
tcp
-p
tcp
--
dport
3050 -j ACCEPT
Then run
/etc/init.d/
iptables
restart
Check the result with commands
netstat
-
tulpn
| less
iptables
-L -n
If you are using events, set RemoteAuxPort parameter to some explicit value and add it to iptables too.