SessionSkip

Simple velocity proxy plugin, that allows keeping server in a mixed online mode. By default, all players are authenticated, but for players that don't own the game, they can be whitelisted by IP and will bypass Mojang authentication servers.

Notes: Giving offline players OP or other permissions is insecure. Be careful when setting up permissions for offline users. If you must give them permissions, look into other plugins that might have better solutions (another form of auth besides IP).

Unauthenticated players will use offline UUIDs. Inventories and most other data are not shared between offline and online UUIDs, so try not to mix and match them. The plugin won't allow players in the exempt list to authenticate with Mojang - if they don't match the IP list it will explicitly reject them instead of attempting to authenticate them.

Usage:

• /exempt add <player> <cidr>
  • Exempts a player
• /exempt remove <player> <cidr>
  • Removes an existing exemption
• /exempt removeall <player>
  • Removes all exemptions on a player. You'll also need to migrate their inventory from an offline UUID to an online UUID.
• /exempt list <player>
  • List all exemptions on a player
• /exempt listplayers
  • List all players that have exemptions
• /exempt reload
  • Reload config from disk

/exempt command requires the "command.exempt" permission on the velocity proxy.