How to log in to mire without typing your password

Zeroth, you must have openssh client 4.3 or later. Other versions may work, but we make no guarantees.

First, you must make sure that your /etc/krb5.conf (or, on MacOS, your /Library/Preferences/edu.mit.Kerberos file) is sane. All you need to do is make sure that there are NOT entries in there which disable the dns_lookup_kdc or dns_lookup_realm options (unfortunately Fedora ships with these crippled). If you don't see those options in the file, you're fine.

Then, you must obtain kerberos tickets. If your username is "fred", you would do this by typing

   kinit fred@HCOOP.NET

Then type your password when prompted. Note that you MUST capitalize HCOOP.NET and you MUST NOT capitalize your user name. This is important.

Next, make sure you have your tickets. To do this, type

   klist

You should see your tickets and their expiration dates.

Last, type

   ssh -o 'GSSAPIAuthentication yes' -o 'GSSAPIDelegateCredentials yes' mire.hcoop.net

If that doesn't work, add "-vvv" to the command line and copy and paste the ENTIRE output into an email to hcoop-discuss and we'll tell you what's up.

If you do this a lot, you can include the GSSAPIAuthentication and GSSAPIDelegateCredentials options in your .ssh/config file. But you should NOT turn on GSSAPIDelegateCredentials for arbitrary hosts (make sure you only enable it for HCOOP hosts). Here's what AdamMegacz uses:

Host deleuze.hcoop.net
  ForwardX11Trusted yes
  GSSAPIAuthentication yes
  GSSAPIDelegateCredentials yes
  User megacz_admin
Host mire.hcoop.net
  ForwardX11Trusted yes
  GSSAPIAuthentication yes
  GSSAPIDelegateCredentials yes
  User megacz_admin