Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello,

I understand Multiboxing is not allowed on Nostalrius - Link

So I would like to ask about character towing: Is the user allowed to log in with a low level character and put on follow to another, higher level character they have on another account? And then kill the mobs for quests with the higher level toon.

https://wow.gamepedia.com/Character_towing

If the Character towing is not allowed on Nostalrius then how about Multilogging? Is any form of Multilogging allowed? If yes, then what forms of multi-logging are allowed?

Thank you

All of these things are classified as multiboxing, or they were classified as such on Nostalrius, and were not allowed.

Nostalrius did shut down years ago, so if you're asking on what is allowed on other servers/projects, I would advise you to check their websites for rules.