I would say instead of focusing on a "LAN only" server, set it up the generic akka route, so that your server is listed on the eqemu server list, and in your eqemu_config.xml, set the Locked element on, so the server is locked by default when it boots up, that way only allowed (100 status+) players can join.
Then, when you have a son or friend or whomever that wants to join for the first time, you can let them in by doing a one time process: You get in sync, tell them to get to server select, You then #unlock in game, they can join, make a character real quick, then look at the account table for the latest created account (it's likely them), and change their status to 100 (so they can rejoin), and #lock it again. Now they can enter the server at any time, any where, even when locked.
That way, you never have to muck with configuring it for LAN, and it'll work everywhere, and it's protected from unwanted guests (as long as you don't forget to #unlock/re-#lock).
The only part you'll have to double check is what commands are exposed for a status 100 user (they need it to get through locked), which is in command_settings table.
but this is what I'd do for a "LAN server". Since, if your friend has mates who play, they may all be interested in playing, and they aren't LAN.
