How does Kerberos work with SSH in Linux?
The server decrypts the timestamp and verifies that it is within the allowed time skew; if decryption fails, the password is immediately rejected. Otherwise, a TGT is returned in the AS-REP. S1 attempts to decrypt the TGT using a key generated from your password. If the decryption succeeds, the password is accepted as correct.
Where do I get Kerberos tickets for OpenSSH?
1 gssapi-keyex is also possible but was not accepted into official OpenSSH. To put the long story short: ideally, Kerberos tickets should be obtained on your terminal (L), either with kinit command or as part of the local login sequence in a so-called “single sign-on” setup.
How does SSH and krb5 protocol exchange work?
Describe all the important SSH and KRB5 protocol exchanges: “L sends username to S1”, “K sends to S1” etc. (This question is intended to be community-edited; please improve it for the non-expert reader .) S1 gives username and password to PAM stack.
How does putty 0.61 work with SSH?
PuTTY 0.61 supports using both Windows (SSPI) and MIT (GSSAPI), although you must enable forwarding (delegation) manually. 1 gssapi-keyex is also possible but was not accepted into official OpenSSH.
Is it possible to run Kinit without a password?
One way to get passwordless login is to run kinit, type my password, and then run ssh@host. My question is, can I skip the kinit step and run ssh directly , in such a way that the first attempt to ssh will automatically grab a kerberos ticket so that subsequent attempts to ssh will have the ticket and not require a password?
Can a SSH account be added to a KDC?
[139]Although, if remote login access to a KDC is desired, SSH is a good way to do it! For each Kerberos user, add an account (or “user principal”) to the KDC database. For each application server that will use Kerberos to authenticate clients, add an account (or “service principal”) to the KDC database.