Hi, In our environment we use Cookies for single sign on. And we have Perl code that extracts the username from the cookie and authenticates the user by checking the signature embedded in the cookie. How can such a cookie based custom SSO work with OTRS? I am not sure if the following starting points would work and what other ways there may be. 1) Is this possible?: set Framework - Frontend::Customer::Auth to "HTTPBasicAuth" and modify Kernel/System/CustomerAuth/HTTPBasicAuth.pm to read the SSO Cookie and set my $User = ... based on the result? How would I obtain the cookie in HTTPBasicAuth.pm ? 2) Or this? : Also set HTTPBasicAuth in OTRS and process the cookie separately in Apache and set REMOTE_USER =making it look like Basic Authentication for OTRS. If yes, how can this be done? Thank you in advance for any tips