title: Symfony dynamic firewall
body: <p>On a large webapplication, I want our customers to be able to enable/configure their own sigle sign-on (SAML) identity provider. Each customer has it's own specific subdomain allowing our application to determine which firewall should be active.
  However, I don't want to manually configure each new firewall and clear the cache before changes are taken into effect. Now I read about dependency injection, extensions, compilers and all that, but I just can't seem to find a way to load dynamic firewall settings from the database and apply them. Any idea how I would do this?</p>
  
  <p>FYI, I am using the SamlSPBundle for SSO.</p>
  
  <p>Thanks!</p>