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Setting up 20 equal linux boxes -- More questions



Thanks for replies, I haven't been able to do a "real-life" test as the
computers didn't arrive yet. In the meantime I got some remarks here
which result in more questions.

I got a reply the is not on the list from Steve Stancliff
<stanclif@mil.ufl.edu>, he says:

> As others mentioned, NFS is the way to mount the 
> homes from the fileserver.  I advise not using 
> autofs for mounting the homes, just mount them 
> in fstab.  Autofs is very flaky.

Could anyone comment on this and mention the pros and cons of both
solutions?
Why is autofs flaky?

> Also, NIS is the usual method of synchronizing files,
> such as /etc/passwd, but NIS also is flaky, and it 
> supposedly has security issue.  NIS also defeats 
> password shadowing, since it will pass the shadow 
> file in the clear.  On our system I replaced NIS with 
> a password distribution system using scp (part of ssh). 

I also heard that NIS is not very secure, and as mentioned before there
already is an LDAP-server on the Server-Box which could serve as a
User-Database as well (using PAM).
Has anyone done this before?

> If you don't allow users to change their passwords
> (which is often a good idea, so you can enforce 
> reasonably strong passwords), then you don't need 
> automated distribution anyway - you can just scp the 
> passwd files after you change them.  If you use a 
> public-private keypair for authentication of root, 
> then you can do this without having to type in all 
> the passwords.  But then in that case if someone 
> gets root on your server, he has root on all machines.
> (But really, if he has root on your server you're
> hosed anyway.)

Weak passwords are not so much a problem as the people who use the
computers are not so evil. If everyone has her own background image to
play with they won't try to spy out passwords ;-}

If you there are HOWTOs, FAQs, manuals or other resources on the web
that answer all these question, please tell me!

Thanks a lot!!

- Konrad Mierendorff



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