Replace an existing firewall (transparent)

[grzmrc]

Hi all,
I have to replace my intranet firewall, and I want to employ pfsense.
It's a transparent firewall which has wan and lan on different subnet.
So, I try to setup pfsense, but from external ip address I'm not able to ping internal host.
what I have to do also?

Wan
10.0.127.146/30
gw 10.0.127.146

LAN
10.0.64.0/25

IN firewall -> NAT -> Outbound I flag the "no NAT" option, so I can surf intranet sites by the actual IP address.

I also add a "TEST" rule that permit all traffic from wan to lan…

What I have to do to permit ping from external ip to internal ip?
tks in advance.

[grzmrc]

Problem solved…
It was a rule problem, in that when I switched from wan network to any (source network)all is gone in the right way.