Port 20
FTP Client
Port 21
FTP Server
Port 22
SSH Secure Shell
Port 23
TelNet
Port 25
SMTP
Port 53
DNS
Port 67
DHCP server
Port 68
DHCP Client
PORT 80
http
PORT 110
POP3
PORT 137
NetBios
Port 139
NetBios
Port 143
iMap
internet message access protocol
Port 161
SNMP
Simple Network Management Protocol
used to collect data related to network changes or to determine the status of network-connected devices.
Port 389
LDAP
Lightweight diretory access protocol
Port 443
https
hypertext Transfer Protocol SECURED
Port 445
SMB/CIFS
Server Management Block
a file sharing protocol. CIFS is a particular implementation of the Server Message Block protocol, created by Microsoft.
Port 3389
RDA