There are a couple of different options to help with this, we recommend using either a cloud based torrent client such as Bitport or a VPN ( Proton VPN is a solid choice, they have a decent free tier also).
Note that there have been many reports lately that Blizzard does file copyright strikes with ISPs for people using torrents to download their older clients. MediaFire – Client from VengeanceWoW (Password: VengeanceWoW).Google Drive – Client from VengeanceWoW (Password: VengeanceWoW).Direct Download – Client from Atlantiss Netherwing.
These clients are pre-installed so all you should need to do is extract them from the zip file and update your realmlist to the server of your choice. Here you can find different sources of downloads for the World of Warcraft Burning Crusade expansion, specifically patch 2.4.3.
