Configure SSH for Active Directory and Authentication Services
In order to achieve SSO OpenSSH first needs to be configured to logon to Active Directory. If Authentication Services is installed and configured you can make sure that PAM is properly configured by running the following command;
This should not return any errors concerning SSH or PAM.
For most linux operating systems the following settings should be configured for ssh in /etc/ssh/sshd_config
Some linux systems may require "PAMAuthenticationViaKbdInt yes" instead of "UsePAM yes"
Once sshd_config is set the service should be restarted.
Configure SSH for Single Sign On for GSSAPI
To achieve Single-Sign-On the OpenSSH package needs to support GSSAPI authentication. The configurations on these linux systems are similar.
RedHat Linux and derivatives; e.g. CentOS, Fedora
Debian Linux and derivatives; e.g. Ubuntu
In this example we assume the realm COMPANY.COM, with an Active Directory controller at ad.company.com
The ssh client should be configured to use GSSAPI as well.
Edit /etc/ssh/ssh_config and add the following lines:
You can either directly symlink /etc/krb5.conf to /etc/opt/quest/vas/vas.conf, or create a separate /etc/krb5.conf. Before doing that, save the original one.
# mv /etc/krb5.conf /etc/krb5.conf.orig
Then, either create the symlink:
# ln -s /etc/opt/quest/vas/vas.conf /etc/krb5.conf
or manually create your own by following these steps:
Create an empty file /etc/krb5.conf and add these lines:
default_realm = COMPANY.COM
default_keytab_name = /etc/opt/quest/vas/host.keytab
forwardable = true
Then run this command as root:
# /opt/quest/bin/vastool -u host/ info toconf /etc/krb5.conf
Single Sign On from one enabled machine should work to another enabled machine.
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