Dreamhost:
panel.dreamhost.com
Other Hosts Control Panel:
WHM/Cpanel:
WHM (controls everything on the server)
Domain:2087 secure
Domain:2086 unsecure
Cpanel (user)
Domain:2082 unsecure
Domain:2083 secure
Plesk:
Domain:8443 secure
Domain:8880 unsecure
LPCP (LunarPages Control Panel)
Domain:20082 secure
Domain:20081 unsecure