### Administering security and resources centrally

In a cluster, you can accomplish all administrative tasks from a central place - the admin server.

After logging onto the cluster from the admin server as an administrator, certain security administrative tasks can be performed:

- Create, remove and edit users, groups, realms, protections and ACLs.
- Edit resource nodes and sub resource nodes. Add reachable virtual resource nodes.
- Customize the default page appearance for users.