Daisy chain routers and run servers

[jixz]

Im planing on using this config:

/~~~~>My Computer ( With Game Servers )
Modem ~~~~~> RouterA~~~~>Router B~~~>NetworkA

I just wanted to know what i needed to do to make sure that I have the ports open to make game servers without letting ports open on networkA or jeopardizing the security on it.

And on linksys routers, is there any way of haveing all ports open? ( i know this is a security threat .. but Ive taken precautions )

 

[riser]

RouterA and RouterB are within the same location?

Or are you connecting RouterA and B over an ISP?