A–2
MULTINET4 MULTI-PORT SERIAL SERVER & MANAGED SWITCH – INSTRUCTION MANUAL
PORT AND TYPE REFERENCE
CHAPTER A: PORT AND TYPE REFERENCE
7/TCP,UDP
ECHO protocol
9/TCP,UDP
DISCARD protocol
13/TCP,UDP
DAYTIME protocol
17/TCP,UDP
QOTD (Quote of the Day) protocol
18/TCP,UDP
Message Send Protocol
19/TCP,UDP
CHARGEN (Character Generator) protocol
20/TCP,UDP
FTP - data port
21/TCP,UDP
FTP - control (command) port
22/TCP,UDP
SSH (Secure Shell)
23/TCP,UDP
Telnet protocol
25/TCP,UDP
SMTP
37/TCP,UDP
TIME protocol
38/TCP,UDP
Route Access Protocol
39/TCP,UDP
Resource Location Protocol
41/TCP,UDP
Graphics
42/TCP,UDP
Host Name Server
43/TCP
WHOIS protocol
49/TCP,UDP
TACACS Login Host protocol
53/TCP,UDP
DNS (Domain Name System)
67/UDP
BOOTP (BootStrap Protocol) server; also used by DHCP (Dynamic
Host Configuration Protocol)
68/UDP
BOOTP client; also used by DHCP
69/UDP
TFTP (Trivial File Transfer Protocol)
70/TCP
Gopher protocol
79/TCP
Finger protocol
80/TCP
HTTP (HyperText Transfer Protocol)
88/TCP
Kerberos - authenticating agent
110/TCP
POP3 (Post Office Protocol version 3)
113/TCP
ident
118/TCP,UDP
SQL Services
119/TCP
NNTP (Network News Transfer Protocol)
Table A–1: Well Known Ports
Port
Description