Essential Network Ports you must know, this article is for Network Engineers and administrators. In our day to day life of programming, we interfere with carious ports to make the communication. For example, to do SSH we have to know it’s using post 22 and for FTP 21, etc. This article is a simple review of that ports.
| DHCP : Port 67 (UDP) | DNS : Port 53 (UDP or TCP) | Echo : Port 7 |
| FTP : Port 21 (Data channel for Active FTP: 20) | Gopher : Port 70 | HTTP : Port 80 |
| HTTPS : Port 443 | IKE : Port 500 (UDP) | IMAP : Port 143 |
| IMAP (SSL) : Port 993 | LDAP : Port 389 | NNTP : Port 119 |
| POP3 : Port 110 | POP3 (SSL) : Port 995 | RDP : Port 3389 |
| rtelnet : Port 107 | SMTP : Port 25 | SNMP : Port 161 |
| SSH: Port 21 | SQL Probe : Port 1434 (UDP) | Telnet : Port 23 |
| TFTP : Port 69 | UUCP : Port 540 | Whois : Port 43 |
This is jua an overview. If you know more ports, please comment it below. I will add those too in this table.Thanks for reading. I hope you like this article Essential Network Ports you must know.