Bridged Mode Firewall + Windows = Unable to access rest of subnet
I followed the instructions on how to turn pf into a Bridged/Transparent firewall and for the most part it seems to be working. Here are the basic settings:
IP: 212.6*.6.80 / 32
IP: 212.6*.*6.80 / 24
Bridge with: WAN
Everything else in the instructions PDF followed including firewall settings and disabling nat etc.
HOWEVER, my problem comes about when I configure my Windows PC's on the 'LAN' side. Here is the setting of one:
I can access the internet, but I cannot access other websites/machines that are on similar IP addresses like 212...85 (servers within my ISP's datacentre). I could almost convince myself that this is 'by design' if it wasn't for the fact that a linux machine configured with the network settings below can see all of the machines totally fine.
It would seem that the Linux box has stopped communicating with the other servers too. Is there any way to fix this?
You need to use 212.6*.*6.1 as the gateway address on your hosts.
Edit: Your WAN address setup is wrong if your subnet is /24, change it to 212.6*.*6.80 / 24
Cheers for that kpa. I changed the WAN subnet to 24 as suggested and tested that all machines could still see google etc. However, when i changed the gateway of the machines from .80 to .1 all internet connectivity was lost :(
/24 may not be the correct subnet for your WAN. You need to speak with your ISP and ensure that you have the correct subnet mask.
Well i only have about 6 IP addresses on the whole range, is that the problem?
I thought netmask of 255.255.255.0 = /24 ? Or am I totally wrong :s
A /24 would mean that you have .1 - .254 addresses to use yourself from the subnet (.0 and .255 reserved). If you have only 6 addresses then you probably have a /29 but it looks like your setup may not be a standard one. I second what submicron says, ask your ISP for details.