User authentification and application access

Hi,

My webmail is accessible from Internet with the WAF. I want allow only several users to access to their webmail from the outside.
Is there a solution to do that using my ASG (I'm in v8.305) ?

For exemple, is it possible with my ASG to do something like if the user is found in one "directory" of my and LDAP and if the password is Ok, user can access to the webmail using the web application firewall. Otherwise he can't.


Thanks for your help,