The Network Address Translation (NAT) exists because there is a scarcity of IP addresses online. If your IP was 321.45.678.90 and you used a POP3 email client, then data addressed to the email client would go to 321.45.678.90:110.īut then you need to deal with the NAT. The first 1024 are historically assigned to the most common services.įor example, POP3, the protocol an email client uses to retrieve mail from the server, uses port 110.Īnd when the time comes for the internet data to be sent and received, the port number is added to the device’s IP (Internet Protocol) address (which is like the device’s home address, but on the internet), thus allowing the various processes involved to know which data package goes where. Due to mathematical reasons, port numbers range from 0 to 65,535.

Oct 21 16:15:57 WANē7.27.43.In more technical terms, ports are addresses a device assigns to services and apps that need input from the outside (usually the internet). While he did it, there was no 0.0.0.0 source ip addresses appeared in firewall logs. He said all attempts shows 'Request time out'. I also asked someone outside our country to ping and check our ports. Why I got confused of 0.0.0.0, because ip addresses is shown from our country. And it shows ip addresses accurately (not 0.0.0.0). I have firewall logs that show entries from inside our country ip addresses blocked pfsense.

What I don't understand is, I have blocked whole world and allowed only our country.

Bitcomet blocked 0.0.0.0