I know it's an old post but you can alternatively 

• Create any site or subdomain. name it anything you like
• Set DOCUMENT ROOT to "/usr/share/phpmyadmin" 
• enable php by selecting a php version
• Add an uncommon port to the listen section, eg 1024^
• remove the 80 and 442 bindings.

access that site through a browser on the network using the selected port. IMO this is more secure that blasting it on port 80 and giving access externally.