Hello McDoob (& 2twisty)!
On 01 Apr 2022, McDoob said the following...
There's an option in each of the server configs called 'Dupe IP Limit' that you could change. This sets the maximum number of logins from any
one IP address. Unfortunately, this method does not restrict the option
to a specific seclvl or IP rage.
There's a setting under Configuration --> Login/Matrix Settings called "Multi Login ACS" -- if you empty that one, it allows everyone to have multiple sessions (up to the Dupe IP Limit). If you want only the SysOp to have multiple sessions, it can e.g. be set to "s255".
Best regards
Zip
--- Mystic BBS v1.12 A48 2022/03/26 (Linux/64)
* Origin: Star Collision BBS, Uppsala, Sweden (21:1/202)