Hi, I have a simple question. I've disabled UPnP from bitcoin.conf. Here are my IPTABLE rules regarding port 8333:
-A INPUT -p tcp --dport 8333 -m state --state NEW -j ACCEPT
However, using netstat shows that there are tons of connections from other nodes onto my server from port 8333. Periodically, I see in the IPTABLES log that a few packets going to port 8333 are being rejected, why is this the case? I do allow ESTABLISHED and RELATED connection packets through.
Also, can anybody tell me why there are also other random ports that are showing as a destination on netstat? I thought Bitcoin only used port 8333 for connecting to other nodes and 8332 for the API.