Problem is simple-cant log in under ANY account on redhat7.3

Symptoms: machine boots and starts normal, services are starting, login appears.
when i insert username with i try to log on to, and press enter, it is back at username prompt.No logs, no errors, does'nt complain about anything

I can start it as linux rescue, mount all, filesystem was clean.
/etc/passd, shadow and /etc/security are at place, seems that pam conf is ok.

dont know was it right or not >did rpm -i --reinstall shadow-tools, pam and passwd packages.

same story, still no login, but not worse either.

Am kinda noob in such situation,.
problem is that machine is scsi raid system with partially mirrored volumes.And soft on it is very customized and expensive one.
if i have to make here some reinstall, it must work after, and there is no any installation source for that special soft.





What should i do try to fix this without reinstall??? (*besides rtfm?)

1. Boot with the rescue disk.
2. mount / (root)
3. chroot to the mounted directory
4. If seperate partitions, mount any other "system" partitions (/usr, /home)
5. try creating a new user (check for any errors)
6. shutdown
7. restart
8. see if you can login as the new user

Dan

This was one thing i tried before first post-no success.

Sad but true, box i was talking about was hacked.
I never tried to implie too much strong security on it, because it was "behind" hardware firewall on gateway.

Some bustard used debilean to turn box to spoofed psyBNC chathole, creating openVPN channel for it.

Sorry you got hacked. That was going to be the next thing I was going to suggest. It just sounded too strange.