password limits of 8 characters on FC4

Gregory P. Ennis PoMec at PoMec.Net
Sun Jul 17 02:16:59 UTC 2005


On Sat, 2005-07-16 at 21:35 -0400, Sam Varshavchik wrote:
> Gregory P. Ennis writes:
> 
> > On Sat, 2005-07-16 at 20:07 -0400, Sam Varshavchik wrote:
> > 
> >> Run 'authconfig'.
> >> 
> >> You should have both “Use MD5 Passwords” and “Use Shadow Passwords” checked 
> >> under the “Authentication” section.
> >> -- 
> > Sam,
> > 
> > Thanks for helping.  I ran authconfig and both MD5 and Shadow are
> > checked.  I did not see any parameter for the length of the password in
> > authconfig!  
> > 
> > Any other ideas?  
> 
> Traditional crypted passwords that use DES are limited to eight characters 
> due to the built-in nature of the DES algorithm.  MD5 passwords can be of 
> any length.
> 
> It looks like for some reason you're using DES to encrypt your passwords, 
> when you should be using MD5.
> 
> Your /etc/pam.d/system-auth file should include:
> 
> password    sufficient    /lib/security/$ISA/pam_unix.so nullok use_authtok md5 shadow
> 
> And your /etc/pam.d/passwd file should contain:
> 
> password   required     pam_stack.so service=system-auth
> 
> Perhaps something overwrote various files in your /etc/pam.d directory.
> 

Thank you for your time and suggestion!  

I checked both files and the proper entry is present in both files.

 This is a fresh install, and the only unusual change that I made was to
change the name of the machine.  This has caused a problem with gnome
not recognizing the machine name properly at the time of logon.  I have
not been able to debug that yet.  There may be other things I have not
recognized as important but that is the only problem I have had.
Everything else went smoothly.  





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