cannot connect with domain controller in nat'ed network?

[lazer]

Hey,

Guys I want some work to be completed in my office regarding setting up of a network lab. Using ssg-5 as a firewall i have setup and connected my network lab (192.168.1.x) behind a nat'ed network gw address 192.168.1.1. I can talk / ping from network lab lan to my company network (10.10.120.x). My company network interface is opertional on ethernet0/0 of ssg-5 fw which is untrust,other being able to ping and access internet I'm unable to access or share , enabling sharing on network lab or even when changing password I cannot connect to domain controller to perform these set of acitivites.

On firewall level i have set policy from trust to untrust (bidirectional too) from any to any. I don't know why this is happening. Whats blocking what.?