Ports forwarded but no connections accepted
Hello, I'm trying to setup my debian system so that I can access it's services from the internet
I have my router set to forward ports 21, 22, and 80 to the internal ip of the server, and internet port checking tools tell me the ports are open at my external ip.
On the debian I am running Apache, ProFTPD, and SSH Server, and they all work fine for me inside the network, but whenever I try connecting with my external ip, all connections are immediately refused.
So I don't know if its a problem with my router setup, with my debian system setup, or the setups of the servers.