NAT with ViciBox and 2 routers

[macaruchi]

Hi!
I have a question it not about ViciBox but maybe you can help me. I have a ViciBox server in a dedicated server in the cloud everything goes fine in my center, but now I want to restrict the surf the web in my agent computers but I dont know how to do. Example this is my scenario

|+--------ROUTER1-INET1-----+ |+--PC1,PC2,PC3,PC4,PC5...PC10 ===> agents computers(Production)
Server ViciBox ---INTERNET----| | |
| |----------------LINUX----------|
|+--------ROUTER2-INET2 ----+ PROXY SERVER |+---PC1,...PC5 ===> Administration computers

The agents cmputers just will use FireFox and can not navigate for all web just whilelist pages , the administration will have all permissions to surf anyplace in the web
I have done this before but I dont know how the voice can pass throw LINUX PROXY SERVER doing NAT , agent will use router1, administration will use ROUTER2

I dont know if I can do NAT to pass the call from ViciBox to my agents, all traffic must be controled by LINUX PROXY.

Any cluues or idea will be appreciated.

Thks In Advance

[macaruchi]

This is the diagram


[img]
ROUTER1-INET1-----+ | --PC1,PC2,PC3,PC4,PC5...PC10 ===> agents computers(Production)
Server ViciBox -INTERNET- |--LINUX PROXY SERVER--|
ROUTER2-INET2 ----+ | |+---PC1,...PC5 ===> Administration computers

[/img]