Important Port Number’s a System Admin Should Know..

Portnumber……..Service
22…………….SSH
25…………….SMTP
23…………….TELNET
53…………….DNS
80…………….HTTP
443……………HTTPS
110……………pop3
465……………SMTP(SSL)
143……………IMAP4
993……………IMAP4(SSl)
2082…………..cpanel
2083…………..cpanel(SSL)
3128…………..Squid
3306…………..MySql
5432…………..PortgreSQL