| Front | Back |
|
FTP Client
|
File Transfer Protocol
Port 20 TCP |
|
FTP Server
|
File Transfer Protocol
Port 21 TCP |
|
Telnet Protocol
|
Used for remote access
Port 23 TCP |
|
SMTP
|
Simple Mail Transfer Protocol
Port 25 TCP |
|
Graphics
|
Port 41
TCP, UDP |
|
DNS
|
Domain Name System
Port 53 TCP, UDP |
|
BOOTP Server
|
Bootstrap Protocol Server
Port 67 UDP |
|
BOOTP Client
|
Bootstrap Protocol Client
Port 68 UDP |
|
TFTP
|
Trivial File Transfer Protocol
Port 69 UDP |
|
HTTP
|
HyperText Transfer Protocol
Port 80 TCP |
|
POP3
|
Post Office Protocol 3
Port 110 TCP |
|
SFTP
|
Simple File Transfer Protocol
Port 115 TCP |
|
SNMP
|
Simple Network Management Protocol
Port 161 TCP, UDP |
|
IMAP
|
Interactive Mail Access Protocol, Version 3
Port 220 TCP, UDP |
|
RIP
|
Routing Information Protocol
Port 520 UDP |