TOPIC: Building in other player's towns

While playing on the CityBuilder servers, I saw some players destroying my claimed town to try to win the game that way. If there is an mod online those players can be banned, but without mods online (and that can happen sometimes) this is really annoying.

Afaik, it is possible to prevent players from doing anything (destroying, building rails, roads, etc.) within a certain distance from a towncenter which is claimed by another player. At least, I've seen it on servers I've played on previously. Is it possible to also incorporate this in the BTPro servers?