integrated user firewall: domain user on non-domain computer

Hi.

I configure integrated user firewall and it all work perfect exept one thing.

When "client" use domain computer - he goes to internet correctly, but when client use hes own laptop - he got a login|passwd form.

I see that when client input hes login and pass to this form srx must "remember" to active-directory-authentication-table that user someUser login propertly from ip. And it dint happends. I try to input domain\username, username@domain, I ty to input domain.local inteed just domain, but I cant go thoug this policy.

How I can authorize user from non-domain laptops?