Common TCP/IP Ports

Here is a list of common TCP/IP ports for reference when conducting a penetration test:

Port	Type	Usage
20	TCP	FTP Data
21	TCP	FTP Control
22	TCP\|UDP	Secure Shell (SSH)
23	TCP	Telnet
25	TCP	Simple Mail Transfer Protocol (SMTP)
42	TCP\|UDP	Windows Internet Name Service (WINS)
53	TCP\|UDP	Domain Name System (DNS)
67	UDP	DHCP Server
68	UDP	DHCP Client
69	UDP	Trivial File Transfer Protocol
80	TCP\|UDP	Hypertext Transfer Protocol (HTTP)
110	TCP	Post Office Protocol (POP3)
119	TCP	Network News Transfer Protocol (NNTP)
123	TCP	Network Time Protocol (NTP)
135	TCP\|UDP	Microsoft RPC
137	TCP\|UDP	NetBIOS Name Service
138	TCP\|UDP	NetBIOS Datagram Service
139	TCP\|UDP	NetBIOS Session Service
143	TCP\|UDP	Internet Message Access Protocol (IMAP)
161	TCP\|UDP	Simple Network Management Protocol (SNMP)
162	TCP\|UDP	Simple Network Management Protocol (SNMP) Trap
389	TCP\|UDP	Lightweight Directory Access Protocol (LDAP)
443	TCP\|UDP	Hypertext Transfer Protocol over TLS/SSL (HTTPS)
445	TCP	Server Message Block (SMB)
636	TCP\|UDP	Lightweight Directory Access Protocol over TLS/SSL (LDAPS)
873	TCP	Remote File Synchronization Protocol (rsync)
993	TCP	Internet Message Access Protocol over SSL (IMAPS)
995	TCP	Post Office Protocol 3 over TLS/SSL (POP3S)
1433	TCP	Microsoft SQL Server Database
3306	TCP	MySQL Database
3389	TCP	Microsoft Terminal Server/Remote Desktop Protocol (RDP)
5800	TCP	Virtual Network Computing (VNC) Web Interface
5900	TCP	Virtual Network Computing (VNC) Remote Desktop