Browsing problem!

[jacob200]

We have several domains. In other states, we have different domains at our sister sites. Currently, we have T-1 to one site. Our "Corp" domain has two class B networks in it. Here is the current layout:
Corp_doamin(PDC 172.12.1.2) --> router(172.12.1.1)----> T-1 ---Sister_Site(Domain_2, 172.18.0.0).
The Corp domain is made up of 172.12.x.x and 172.16.x.x networks. When we try to readdress the router with a 172.16.1.1 address and make the current wan connection go through a checkpoint firewall, local browsing in the Corp domain goes haywire. Servers/machines ghost in and out. Theoretically, there shouldn't be any servers in the"Corp" domain at our sister site. All address are still pingable no name resolution is lost. Three questions:
1) Any ides what could be causing this?
2)Would a server at our sister site that has it's workgroup set to Corp, affect our Corp domain?
3) Is there a current way/utility to monitor our browsing traffic patterns?

thanks ahead of time,

 

[Guest_imported]

1) Any ides what could be causing this?
Yes, you'll need to set one of the Domain Controllers as the master browser. You can do this through the registry.

2)Would a server at our sister site that has it's workgroup set to Corp, affect our Corp domain?
If there is a trust relationship between the 2 sites then it could well and truly cause some trouble for you.

3) Is there a current way/utility to monitor our browsing traffic patterns?
We got some monitoring tools from TUCOWS.com that work very well