NETWORK CONFIGURATION

Changing a TCP or SSL port number
The following sections describe the TCP ports that IBM® Lotus® Domino® services use and provide guidelines should you ever need to change these ports.

Default port for NRPC

By default, all NRPC connections use TCP port 1352. Because the Internet Assigned Number Authority (IANA) assigned Lotus Domino this port number, non-Domino applications do not usually compete for this port.

Do not change the default NRPC port unless:

To change the default NRPC port number, use the NOTES.INI setting TCPIPportname_TCPIPAddress and enter a value available on the system that runs the Domino server. TCP ports with numbers less than 5000 are reserved for application vendors. You may use any number from 1024 through 5000, as long as you don't install a new application that requires that number.

Note When setting the NOTES.INI variables for port mapping, do not include a zone in a port mapped address. The zone is only valid locally.

Default ports for Internet services

You may occasionally need to change the number of the TCP or SSL port assigned to an Internet service. Lotus Domino uses these default ports for Internet services:
ServiceDefault TCP portDefault SSL port
POP3110995
IMAP143 993
LDAP389 636
SMTP inbound25 465
SMTP outbound25 465
HTTP80 443
IIOP63148 63149
Server Controller N/A2050

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