what are the correct localhost port

[chaospike]

i'm confused about localhost port and stuff, recently i tried to installed a web server admin to mysql and phpadmin and the software prompt me to put localhost config or port and i fail coz i just put my i.p instead? how should i know what is the correct config to my port or localhost (the default setting on that software r' port 80 <<-- what is this?:p

[mattb]

Web server software like Apache runs on TCP Port 80. (TCP/80)

Direct Admin runs on TCP Port 2222 (TCP/2222)

localhost is an alias for the IP 127.0.0.1 (being the machine you are currently on).