Advanced Connection Options
From FarmShare
(Difference between revisions)
(Created page with "= Public Key Authentication = Public key authentication is not supported by FarmShare systems. However... = GSSAPI (Kerberos) Authentication = FarmShare systems do support ...") |
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Public key authentication is not supported by FarmShare systems. However... | Public key authentication is not supported by FarmShare systems. However... | ||
| - | = GSSAPI (Kerberos) Authentication = | + | == GSSAPI (Kerberos) Authentication == |
FarmShare systems do support password-less authentication using GSSAPI. The default configuration of OpenSSH uses GSSAPI for authentication if a valid Kerberos ticket is present but does not forward tickets to the remote system, which can cause problems with [[AFS]]. | FarmShare systems do support password-less authentication using GSSAPI. The default configuration of OpenSSH uses GSSAPI for authentication if a valid Kerberos ticket is present but does not forward tickets to the remote system, which can cause problems with [[AFS]]. | ||
Revision as of 14:02, 25 January 2012
Public Key Authentication
Public key authentication is not supported by FarmShare systems. However...
GSSAPI (Kerberos) Authentication
FarmShare systems do support password-less authentication using GSSAPI. The default configuration of OpenSSH uses GSSAPI for authentication if a valid Kerberos ticket is present but does not forward tickets to the remote system, which can cause problems with AFS.
It is possible to enable forwarding by adding the ssh option GSSAPIDelegateCredentials to ~/.ssh/config, but you should do so only for trusted computers. Something like the following is recommened:
Host cardinal cardinal?
HostName %h.stanford.edu
Host corn corn??
HostName %h.stanford.edu
Host cardinal cardinal? cardinal*.stanford.edu corn corn?? corn*.stanford.edu
GSSAPIKeyExchange yes
GSSAPIAuthentication yes
GSSAPIDelegateCredentials yes
This configuration should work safely in all common cases for both cardinal and corn systems.
See the man page for ssh_config for more information on GSSAPI options.
