Based on the typical naming conventions in the Minecraft community, almost certainly refers to a Minecraft Anti-Cheat plugin , likely designed for the 1.7.x version of the game (or a plugin version 1.7). These plugins are critical for server administrators to maintain fair play by blocking cheaters using hacked clients.
: Install AntiCC 1.7 before running the primary application installer to ensure the communication block is active. anticc 1.7