Page
51
Appendix B: Common Port Numbers
Port Number
Service Name
7 Echo
11 Systat
19 Chargen
20 (21)
FTP
23 TELNET
25 SMTP
37 Time
49 TACACS
53 DNS
67(68) BOOTP
69 TFTP
70 Gopher
79 Finger
80 HTTP(WEB)
88 Kerberos
109 POP2
110 POP3
113
AUTH
118 SQLServ
119 News/NNTP
123 NTP
137(138)(139) NetBIOS-ns,
NetBIOS-dgm,
NetBIOS-ssn
143 IMAP2
161(162)
SNMP (SNMPT RAP)
220 IMAP3
389 LDAP
443 HTTPS
514 SYSLOG
546(547)
DHCP Client (DHCP
Server)