Why can't subgrids see each other?

Question

Computer networks

Hello. There is a painful question.
There is a direct channel between two pfsens (not vpn). Behind the first pfsense, the grid 192.168.xx/22 is the gateway on the x.x.x.1 sense, behind the second pfsense 192.168.5.y/24 the gateway is on the x.x.x.2 sense. Routing between gateways is registered by statics, there is also internal routing, but neither pings nor traces reach the internal network. The internal sniffer shows absolutely nothing. Those. he sees the packets, but they do not reach their destination. Tell me what to send in more detail - I will send it. Thanks in advance.

Answer 1

not familiar with pfsen, but it seems to be a firewall.
and in firewalls, by default, there are zones (inside, outside, etc.)
different interfaces can be in different zones, for example, the LAN is in inside, and your direct outside channel
is again by default, very often packets are allowed to pass towards inside -> outside
, but here the ouside -> inside policy must be written explicitly,
or put the internal and external interfaces into one zone

Answer 2

Would deploy x.x to 192.168.xx/22. And then, at certain values, the second network falls into it entirely.