I tried this solution:
iptables -I OUTPUT -p tcp --dport 2195 -j ACCEPT
/etc/init.d/iptables stop
/etc/init.d/iptables start
but still can't access the port.
If there are more ports that I have to open for APNS let me know.
How about:
iptables -A INPUT -p tcp --dport 2195 -j ACCEPT
service iptables restart
This may help too.