passwd: compat
group: compat
shadow: compat

passwd_compat: nis
group_compat: nis
shadow_compat: nis

hosts: files dns nis

services: files nis
networks: files nis
protocols: files nis
rpc: files nis
ethers: files nis
netmasks: files nis
netgroup: files nis
automount: nis
aliases: nis