A network port is a bit like a door to which the application of a device connects to another remote device through the network also, when it comes to an incoming connection, we revert, the local port becomes the remote port and the remote port is the local port. Finally, keep in mind that the notion of local and remote also applies to the IP address.
Ports are numbers that generally correspond to a specific network application service. For example, ports 80 and 443 correspond to HTTP and HTTPS. Port 22 is for SSH also, each port is linked to a separate IP address for example, 172.217.22.131:443 corresponds to the address 172.217.22.131 on port 443. This notation is found quite frequently in fact and that is how each port has its notations and we will see which are the most common ports so far.
HTTP: port 80; HTTPS: port 443; FTP: port 21; FTPS / SSH: port 22; POP3: port 110 POP3 SSL: port 995 IMAP: port 143 IMAP SSL: port 993 SMTP: port 25 alt; port 26 2525 SMTP SSL: port 587 MySQL: port 3306 CPanel: port 2082 CPanel SSL: port 2083 WHM: port 2086 WHM SSL: port 2087 Webmail: port 2095 SSL Webmail: port 2096 WebDAV / WebDisk: port 2077 WebDAV or WebDisk SSL: port 2078
Related reads:
TLS or Transport Layer Security – How this works
Tips to improve the Security of your LAN Network
