Jenkins3: Changing default port Posted by mholmes on 24 May 2011 in R & D, Activity log, Documentation It looks like the place to change the default port is /etc/default/jenkins. Tried to change it to port 80, but it wasn't having any of it, so gave up. We can map 8080 from the VM through the AJP connector. This entry was posted by Martin and filed under R & D, Activity log, Documentation.