HP-UX Networking Ports Reference Guide (February 2009)

Chapter 1
Port Numbers and Ranges
Port and Port Range Use
3
17 qotd TCP/UDP Quote of the Day
Archaic port that can be used as an attack vehicle.
It is recommended that you edit the
/etc/inetd.conf file to comment out or disable
this service, or use SAM to disable this service.
19 chargen TCP/UDP Character Generator
Archaic port that can be used as an attack vehicle.
It is recommended that you edit the
/etc/inetd.conf file to comment out or disable
this service, or use SAM to disable this service.
20 ftp TCP/UDP File Transfer Protocol: Data
21 ftp TCP/UDP File Transfer Protocol: Control
22 ssh TCP HP-UX Secure Shell
SSH uses this port by default. An administrator can
configure SSH to use a different port.
23 telnet TCP Telnet
25 smtp TCP Simple Mail Transfer Protocol
37 time TCP/UDP Time
Responds to a time request. If you use this service,
it is recommended that you convert to the Network
Time Protocol and use a secure server.
If you want to disable this service, edit the
/etc/inetd.conf file to comment out or disable
this service, or use SAM to disable this service.
39 rlp UDP Resource Location Protocol
43 whois TCP Who Is, also called nicname
53 domain TCP/UDP Domain Name Service
67 bootpd UDP Bootstrap Protocol Server
This service should function only if the server is a
bootp server. If it is not, disable the service in the
/etc/inetd.conf file.
68 bootpd UDP Bootstrap Protocol Client
This service should function only if the server is a
bootp server. If it is not, disable the service in the
/etc/inetd.conf file.
Table 1-1 Port Numbers Supported in the HP-UX 11i v1, 11i v2, and 11i v3
Operating Systems (Continued)
Port/Port
Range
Service/Application Protocol Description