Port Numbers Flashcards
0 to 1023 are known as…
Well-Known or System Ports
SSH
TCP 22
Telnet
23
FTP
20/21
SMTP
TCP 25
HTTP
TCP 80
POP3
TCP 110
1024 to 49151 are known as…
Registered or User Ports
NTP
123
FTP control connection for administering a session
21
FTP Data Connection for sending file data
20
IMAP
TCP 143
DNS
UDP/TCP 53
49152-65535
Dynamic or Private Ports
Network News Transfer Protocol (NNTP)
TCP 119
HTTPS
TCP 443
TFTP
UDP 69
DHCP
UDP 67
SNMP
UDP 161/162
Terminal Access Controller Access-Control System (TACACS)
49
NetBIOS
137/138/139
Remote Authentication Dial-In User Service (RADIUS)
1812/1813
Lightweight Directory Access Protocol (LDAP)
TCP 389
Remote Desktop Protocol (RDP)
3389
PPTP
1723
Kerberos
88
L2TP
1701
SNMP Agent receives requests on
UDP 161
SNMP Management station receives notifications on
UDP 162
SIP non-encrypted
5060
SIP encrypted
5061
Media Gateway Control Protocol (MGCP)
2427/2727
Real-time Transport Protocol (RTP)
5004
H.323
TCP 1720
Server Message Block (SMB)
TCP 445