CentOS 5 + APF = Ping Problem

I have setup a server to stream files from another server, but the server IP has been blocked by APF some how. I don't know why and how but the server's IP is not listed in the deny list. Is there anything I missed out?

 

I guess it's being blocked by some iptables rule. Did you check

Code:

iptables -L

?

 

Thanks for your reply, I executed the code and it returns a great long lines of things accepted and dropped. Assume that it is indeed listed to be blocked, how do I unblock it?

EDIT: I entered the following line:

Code:

iptables -I INPUT -s [IP Address] -j ACCEPT

the IP has been accepted, but I still can't ping it with apf on. Any more ideas?