Firewall/NAT

I am having major problems after having Fios installed at my office.  My Linksys RV042, which had been performing great with a cable internet service provider (Brighthouse), now locks up every 6 hours.  This requires a hard reset to get service back up again.

Being as I have had good experiences using m0n0wall in the past, I decided to use a PC and replace my Linksys with a m0n0wall.

My needs were pretty simple.  I have a Mail server behind the firewall, and one other server that I need to access from the WAN.  I have 5 static addresses from Fios, one I assigned to the firewall, two more were reserved for NATing to the internall servers.

I have tried various configurations to no avail.  My hope is that someone here can point out something I am missing.

My first thoughts were to assign the private addresses for the internal servers under SERVER NAT.
Then address each port that I needed under inbound NAT.  That did'nt work.

I then tried 1:1 NAT, and again everything is blocked.

I have used the MAC address of the previous router, so I now that it is'nt some sort of cached setting holding up the connection.

I also made sure to assign the ARP proxy.

DHCP worked great from the inside, and all the workstations on the local network had internet access.

I am not sure what I am doing wrong, any ideas?

1:1 NAT is the best choice if you have enough public IPs.  just add Proxy ARP and WAN rules and you should be good to go!

are your servers on the LAN or OPT1 interface?  if on OPT1, you will need a default pass rule on your OPT1 interface similar the LAN default to any rule.

Roy...