Reference Guide
23
Well-Known Services List
Well-Known Services List
In addition to the ports used by services described above, WatchGuard supplies a list of well-known
services. Because software companies regularly add new services, this is not a full list of all possible
services. For more information, refer to:
www.iana.org/assignments/port-numbers
636
TCP
LDAP (SSL)
102
TCP
MTA - X.400 over TCP/IP
110
TCP
POP3
995
TCP
POP3 (SSL)
135
TCP
RCP
25
TCP
SMTP
137
UDP
SMB
138
UDP
SMB
139
TCP
SMB
445
TCP/UDP
MS-DS (Directory Services)
119
TCP
NNTP
563
TCP
NNTP (SSL)
Port(s)
Protocol
Purpose
Service Name
Port #
Protocol
Description
tcpmux
1
TCP/UDP
TCP Port Service Multiplexer
compressnet
2,3
TCP/UDP
Management Utility
rje
5
TCP/UDP
Remote Job Entry
echo
7
TCP/UDP
Echo
discard
9
TCP/UDP
Discard
systat
11
TCP/UDP
Active Users
daytime
13
TCP/UDP
Daytime
qotd
17
TCP/UDP
Quote of the Day
msp
18
TCP/UDP
Message Send Protocol
chargen
19
TCP/UDP
Character Generator
ftp-data
20
TCP/UDP
File Transfer [Default Data]
ftp
21
TCP/UDP
File Transfer [Control]
ssh
22
TCP/UDP
SSH Remote Login Protocol
telnet
23
TCP/UDP
Telnet
smtp
25
TCP/UDP
Simple Mail Transfer
nsw-fe
27
TCP/UDP
NSW User system FE
msg-icp
29
TCP/UDP
MSG ICP
msg-auth
31
TCP/UDP
MSG Authentication