Firewall & Routing - help!

[Kevin F. Berrien]

With the help of many on the previous thread (Firewall - Very limited 
Access - suggestions), I've built my firewall using fwbuilder & FC1.  At 
present I've got it set up in a test environment.  The firewall seems to 
be operating correctly with one exception, but my real problem is with 
my routing.  I've always been terrible with routing....  At present, I 
can't traverse from a workstation on the "internal" subnet to host on 
"external" subnet, or internet.

I am not using NAT on this firewall, it just bridges two subnets - 
allowing very specific traffic through (antivirus/windows-sus, remote 
desktop).  I need to get the routing between subnets working through the 
firewall.

"external subnet" - eth0 - 192.168.50.0
gatway to internet - 192.168.50.1
eth0 ip 192.168.50.48/255.255.255.0 gw = 192.168.50.1

"internal subnet" - eth1 - 192.168.5.0
eth1 ip 192.168.5.200/255.255.255.0 gw = 192.168.50.1??

test host "internal"
ip 192.168.5.3/255.255.255.0 gw = 192.168.5.200??

Thanks!

Info from previous thread:
 >I'm intersted in building a choke firewall for the following 
sistuation.  Have a closed network (police dept).  There are no >crosses 
to the internet.  However, we'd like VERY LIMITED access by the Windows 
DC server for the following: >Windows update (via SUS), Symantec AV 
updates, VNC/or remote desktop connection to 1 or 2 admin workstations on
 >our WAN.