Firewall (simple) I hope.

[danielf]

I must be missing some thing here. 


I have GLobal IPs on both side of my fire wall. 

basically it is this:

INTERNET -> ROUTER -> FIREWALL -> SWITCH(Lan)

now I have no rules yet I did turn on ip forwarding and both outside and 
inside interfaces have IPs why can I not ping through the firewall. I can 
ping from the router to the inside interface of the firewall. but not past 
it. 

I can ping from a server on the lan side to the outside interface of the 
firewall. Accually the ICMP requests are getting to the router they just cant 
get back in through the firewall

I guess it workinng a little to well. do I have to do something with 
postrouting for this to work? 

or maybe snat the networks?

I do not know? HELP !!!!!!!

TIA Daniel Fairchild 
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trying to build a firewall :)