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Solve : How to avoid overwrite the passwd and shadow file?

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Dear All,

I have no idea to do so the below questions:

1. I add the users and set the password. But I want to avoid SOMEONE to overwrite the shadow when log on as root .
2. The users telnet the server, browser the directory. But the telnet connect is time out. What is the FIRST thing I need to check? 

Thanks Quote from: sun_os on January 26, 2012, 05:52:09 AM

I want to avoid someone to overwrite the shadow when log on as root

You can't.  root is omnipotent, by definition.Oh! I want to aviod two root users to edit the /etc/passwd , I don't want to set the acl to complicate the permission on the file. I think your best bet is going to be to set up other administrative users and maybe even prevent root from logging on (other than at the console?).  I assume you're thinking of SELinux's capabilities - there are some GOOD walkthroughs >here<.


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