Install pam_2xclient.so module to have Single Sign On for RAS Client.

The module always returns true and uses authentication token provided by 
higher level authentication module.
Please note that when higher authentication module has configuration
SUFFICIENT, it will return on success immediately and pam_2xclient.so
wont be called. Please change SUFFICIENT to REQUIRED.

To install RAS Client PAM module, add two lines to your session manager
service (eg. /etc/pam.d/gdm):

auth	   optional pam_2xclient.so
password   optional pam_2xclient.so

Module arguments:

debug	Debug trace will be written to /tmp/pam_2xclient.log.
	If the file cannot be open then syslog will be used.
	You can use debug argument with all module types.
	EG. session optional pam_2xclient.so debug

<service_list> The module creates SSO cookie only for well known session services.
	You can change the list of services to allow:
	EG. auth optional pam_2xclient.so gdm kde kdm-kde4

