Pass Windows login details to firewall

[BurningTheSky]

Hi,

We have set up a Windows Squid 3.5 proxy to route traffic from a set of machines. The traffic then goes from the proxy to a firewall before heading out of the network. The firewall has filtering based on AD groups configured, but isn't set up as a proxy. Is there any way to get Squid to pass the Windows user information to the firewall without it being a parent proxy?

Thanks