Here is a list of the new game servers that have been added recently for Red Hat Gamers Community, with connection info:
Ark: Survival Evolved, IP Address: 184.60.188.250 Port: 7777.
Rust, IP Address: 184.60.188.250 Port: 28015.
7 Days To Die - alpha 16 - experimental.
To prevent zombies from spawning in an area, such as in prefab buildings, simply place down a bedroll and by doing so zombies wont spawn within the default bedroll dead zone size of 15 blocks by 15 blocks.