Common Network Ports Flashcards
FTP
File Transfer Protocol
tcp/20 - tcp/21
Sends and receives files between systems
SSH
Secure Shell
Encypted console access
Telnet
Telecommunication Network
tcp/23
Insecure console access
SMTP
Simple Mail Transfer Protocol
tcp/25
Transfer email between mail servers
DNS
Domain Name System
udp/53 - tcp/53
Convert domain names to IP addresses
HTTP
Hypertext Transfer Protocol
tcp/80
Web server communication
HTTPS
Hypertext Transfer Protocol Secure
tcp/443
Web server communication with encryption
POP3
Post Office Protocol version 3
tcp/110
Receive email into a email client
IMAP4
Internet Message Access Protocol v4
tcp/143
A newer email client protocol
RDP
Remote Desktop Protocol
tcp/3389
Graphical display of remote devices
NetBIOS - udp/137
NetBIOS name service
Register, remove, and find Windows services by name
NetBIOS - udp/138
NetBIOS datagram service
Windows connectionless data transfer
NetBIOS - udp/139
NetBIOS session service
Windows connection-oriented data transfer
SMB
Server Message Block
tcp/445
Windows file transfers and printer sharing
AFP
Apple Filing Protocol
tcp/548
Mac OS file transfers