Eventually, in August 2001, the Goa'uld Tanith, in the service of Anubis, was able to modify the shields on his ship to protect him from the Tollans' ion cannons and forced them to do the bidding of his master. After Tanith's plan was foiled due to the intervention of SG-1, Tanith razed the planet, killing most of the Tollans. (SG1: "Pretense", "Between Two Fires")