53.2. Configuring smart-card authentication for SSH logins in the web console

Procedure

1. In the Terminal page, verify that the web console has created a Service for User to Proxy (S4U2proxy) Kerberos ticket in the user session:

   $ klist
   …
   Valid starting     Expires            Service principal
   05/20/25 09:19:06 05/21/25 09:19:06 HTTP/myhost.idm.example.com@IDM.EXAMPLE.COM
   …

2. Create a list of the target hosts that the delegation rule can access:

   1. Create a service delegation target:

      $ ipa servicedelegationtarget-add cockpit-target

   2. Add the target host to the delegation target:

      $ ipa servicedelegationtarget-add-member cockpit-target \
        --principals=host/remote.idm.example.com@IDM.EXAMPLE.COM

3. Allow cockpit sessions to access the target host list by creating a service delegation rule and adding the HTTP service Kerberos principal to it:

   1. Create a service delegation rule:

      $ ipa servicedelegationrule-add cockpit-delegation

   2. Add the web console client to the delegation rule:

      $ ipa servicedelegationrule-add-member cockpit-delegation \
        --principals=HTTP/myhost.idm.example.com@IDM.EXAMPLE.COM

   3. Add the delegation target to the delegation rule:

      $ ipa servicedelegationrule-add-target cockpit-delegation \
        --servicedelegationtargets=cockpit-target

4. Enable Kerberos authentication on the remote.idm.example.com host:

   1. Connect through SSH to remote.idm.example.com as root.
   2. Add the GSSAPIAuthentication yes line to the /etc/ssh/sshd_config file.

5. Restart the sshd service on remote.idm.example.com so that the changes take effect immediately:

   $ systemctl try-restart sshd.service