Redhat 6.0 Login Problem

I am using RedHat 6.0.  I have experienced a problem that has occured days after I have successfully configured the OS.  The problems is that I tried to add a user accout (via linuxconf) and the OS got fowled up with the following side effects:
1)Uable to rlogin as some users, but others users still work.
2)FTP does not remotely work.
3)Can not 'su'to root after logging as a regualur users (cannot su to root group - permission denied).
4)Problems logging as as root or user from the Linux loggin prompt.

Has anyone experienced such problems or know of any fixes/patches/workarounds?

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

I have noticed some general "flakeyness" with linuxconf.  Although it is supposed to be a great tool and very powerful (I guess it is in the sense that it combines lots of configuration options into one graphical interface), I still use the manual "adduser username" command.  By editing configuration files and doing things "manually", you get gain a better understanding of how the graphical programs work anyway.  So my advice would be to stick with the traditional command, adduser, chgrp, etc....

O'Reilly's "Linux in a Nutshell" is a great reference for that sort of thing.
Good Luck-
Running Linux, 2nd Edition, O'Reilly
is another exceptional ref.  Actually, the entire "critter series" are comprehensive and useful ...

Jaa Mata
Perhaps trying the passwd command on the affected usernames might help. If not, then maybe you'll be better off by deleting those users from passwd file itself(manually) and then creating them again. Anyway, I'll always recommend sticking to the console for power jobs like these.
The Ultimate Tool Kit for Technolgy Solution Provi

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy for valuable how-to assets including sample agreements, checklists, flowcharts, and more!

Be sure to always use vipw when accessing your password file--normal vi will not update the shadow files, if you're using them.

Do you have any accounts with a login shell of /etc/nologin or /etc/false, or some such?

Can you login as root on the console?  direct root login over telnet is sometimes denied on unix system.s
By default root is denied direct telnet access. As with su being denied some installaion demand that users be in the "wheel" group to su up.

It sounds like linuxconf changed some of your setings to default values. I never use linuxconf myself but I have heard that it attempts to always use defaults. ie I remove uucp group and user entries since I do use uucp I ran linuxconf and it kept complaining that uucp did not exist...who cares! 8) So that soured me on it.

Anyways, if you can login as root on the console check your /etc/group and securetty files (securetty denies direct root telnet)
As for ftp.. ensure that the daemon is running if so, ensure your group file entries aren't messed up. And also make sure that linuxconf didn't decide to barf all over you ftp config.

Hope this helps

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
in comment for uucp i menat I DO NOT use it 8)
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.