22.2.2.1.1. Interface and Port Binding
The BindAddress and Port directives no longer exist; their functionality is now provided by a more flexible Listen directive.
If Port 80 was set in the 1.3 version configuration file, change it to Listen 80 in the 2.0 configuration file. If Port was set to some value other than 80, then append the port number to the contents of the ServerName directive.
For example, the following is a sample Apache HTTP Server 1.3 directive:
Port 123 ServerName www.example.com
To migrate this setting to Apache HTTP Server 2.0, use the following structure:
Listen 123 ServerName www.example.com:123
For more on this topic, refer to the following documentation on the Apache Software Foundation's website: