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| Currently, all CSG-maintained Linux systems in the Department will accept your College password (actually a [[http://web.mit.edu/Kerberos/|Kerberos]] password stored in the College Active Directory domain), or your DoC linux (Kerberos) password if you have one. DoC Windows machines currently use their own Windows-specific passwords, but will hopefully accept College passwords by the end of summer 2009. |
Currently, all CSG-maintained Linux systems in the Department will accept EITHER: |
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| Kerberos also enables the ability to use ''ticket-based'' automatic single sign-on across services that have been extended to support it. Departmental services that support ticket-based authentication include: | * your College password (actually a [[http://web.mit.edu/Kerberos/|Kerberos]] password stored in the College Active Directory domain), OR * (existing DoC users) your previous DoC Kerberos password. Up to 2007, people joining DoC were setup with a DoC kerberos password. DoC Windows machines currently use their own Windows-specific passwords, but will hopefully accept College passwords by Xmas 2009. Kerberos also enables the ability to use ''ticket-based'' automatic single sign-on across services that have been extended to support it. When you login to (or unlock a locked session on) a DoC Linux machine, you receive a Kerberos ticket that lasts 8 hours. All the following services will try your current ticket rather than asking you for your password again until your ticket expires after 8 hours: |
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| When you login to (or unlock a locked session on) a DoC Linux machine, you receive a Kerberos ticket that lasts 8 hours. All the above services should then work without asking you for your password again until your ticket expires after 8 hours, you can give yourself another ticket from the College Kerberos/AD servers via kinit $user@IC.AC.UK. |
When your ticket has expired, you can give yourself another ticket from the College Kerberos/AD servers via {{{ kinit xyz09@IC.AC.UK }}} [if your username is xyz09]. Note that "IC.AC.UK" is in upper case, and is not an email address, it's a Kerberos realm. |
Authentication Services
We are aiming towards a single College password for each user, that allows you to access all standard university and Departmental services, such as email, remote login and web services. Currently, all CSG-maintained Linux systems in the Department will accept EITHER:
your College password (actually a Kerberos password stored in the College Active Directory domain), OR
- (existing DoC users) your previous DoC Kerberos password. Up to 2007, people joining DoC were setup with a DoC kerberos password.
DoC Windows machines currently use their own Windows-specific passwords, but will hopefully accept College passwords by Xmas 2009.
Kerberos also enables the ability to use ticket-based automatic single sign-on across services that have been extended to support it. When you login to (or unlock a locked session on) a DoC Linux machine, you receive a Kerberos ticket that lasts 8 hours. All the following services will try your current ticket rather than asking you for your password again until your ticket expires after 8 hours:
- Remote login via Secure Shell (SSH);
- Departmental web pages accessed over HTTPS from Kerberos-aware browsers like Firefox;
- Network filesystem access via Windows Networking (SMB/CIFS) - but using your DoC Windows AD/Kerberos ticket.
When your ticket has expired, you can give yourself another ticket from the College Kerberos/AD servers via
kinit xyz09@IC.AC.UK
[if your username is xyz09].
Note that "IC.AC.UK" is in upper case, and is not an email address, it's a Kerberos realm.