A server side only mod to prevent users join server using any listed mod.
Available on Curseforge: https://legacy.curseforge.com/minecraft/mc-mods/modblacklist
Available on Modrinth: https://modrinth.com/mod/mod-blacklist
My example config.
Config File: config/modblacklist-common.toml
#Enable mod blacklist?
blacklistEnabled = true
#Comma Separated Mod Ids to BAN! ex: journeymap;jei;jade
banMods = "journeymap;simplemaps;blazemap"
#Comma Separated Mod Ids to KICK! ex: journeymap;jei;jade
kickMods = ""
This mod is server only, you do not need install it on client side, just place on mods folder in your server.
You are welcome to add this mod to your server.