Our local school has been running a bone-headed centralized authentication setup using NIS and NFS since 2010 (on CentOS 5.x, 6.x, 7.x and now Rocky Linux 8.7).
NIS is very easy to setup and it’s one of the things that JustWorks™. I understand it’s been officially deprecated and is not included in RHEL 9.x.
Does someone have an informed opinion on why NIS is deprecated in terms of flaws and/or security considerations ? I bluntly admit I’ve grown to like it.