Teleportation not allowed in LAN mode

I'd like to know why not also? Can't teleport, no more setgametype 1 in lan mode either.

Unfortunately the permissions are not delivered by default with the integrated LAN mode. We will change that, but in the meantime, you can just copy the "permissions" folder from the dedicated server into your game directory. I have attached an permissions folder to this post, just download and extract it into your game directory. These permissions give everybody on your server full access to everything.

This file should give you access (indenting is important) to all commands as well as to the creative mode (by using the wildcard * character, which means "all permissions related to this key"). If you want to disable teleportation explicitly (or allow it in a different group file), you have to allow the command "teleportplayer", like this:

commands:
    allow:
    - teleportplayer

Creative permissions are "default" (the regular creative mode, i.e. instant digging and godmode, but access to your inventory etc), "freecrafting" (determines if you can craft items for free), "terraintools" (access to the terrain modification tools), "placementtools" (not used yet), "edittools" (not used yet), "npctools" (not used yet) and "questtools" (not used yet).
You can set them this way, for example (in this case you allow default + freecrafting, but deny terraintools):

creative:
    allow:
    - default
    - freecrafting
    deny:
    - terraintools

Worked well thanks