If a port number is one of the registered well-known numbers, a short description of the port appears as the port's name. (Once you create a resource monitor for a port, OpenEdge Management displays this descriptive information on the resource monitoring page, under the page title.)

The following table identifies names associated with several well-known TCP and UDP port numbers.

Table 1. Well-known ports and their associated names
Well-known port Description field acronym
TCP Port 21 FTP
TCP Port 23 Telnet
TCP Port 25 SMTP
TCP Port 80 HTTP
TCP Port 110 POP3
TCP Port 119 NNTP
TCP Port 143 IMAP
TCP Port 389 LDAP
TCP Port 547 DHCPv6
UDP Port 53 DNS
UDP 161 SNMP

If a port is not considered well known, OpenEdge Management displays a port name in the Description field that is based on a combination of the port number and the protocol type you specify. For example, if you specify the port type as TCP and the port number as 3510, OpenEdge Management displays the port name as tcp3510.