OpenSSH won't store credentials

[Nicolas Williams]

On Sat, Mar 23, 2002 at 03:58:03PM +0000, Simon Wilkinson wrote:
> Nicolas Williams (Nicolas.Williams at ubsw.com) wrote:
> : Yes, it's possible, and you don't need Simon's OpenSSH/GSS patches to do
> : this. IIRC OpenSSH has this as a builtin feature (you may need Simon's
> : OpenSSH MIT/Heimdal compat patches for that to work). 
> 
> You will. There's also a bug that I've just discovered in the most recent
> patch that stops it from working (the user's credentials go into a
> memory ccache which is never copied onto the file system). I'm currently
> testing a fix.

auth_krb5_password() seems to have a bug in that it tries to
krb5_cc_resolve() 'MEMORY:'. That's not a valid ccache name in MIT krb5.

'MEMORY:foobar' should work.

> : But you can also
> : use OpenSSH with PAM and a PAM_KRB5 module, if you have PAM (and a
> : suitable PAM_KRB5 module).
> 
> I'd strongly recommend using PAM if you can.

Indeed. Watch out though, the KRB5 code added by the OpenSSH team before
you automatically sets "KerberosAuthentication yes" if:

a) KerberosAuthentication is not set in sshd_config

and

b) /etc/krb5.keytab is readable.

This was quite a surprise to me.

> Cheers,
> 
> Simon.


Cheers,

Nico
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