I have servers on my LAN interface that I want to administer from my desktop on the WIFI interface. I set a floating rule that should allow my desktop go to any interface. The default LAN rule should allow the servers on the LAN to go anywhere. I can ping any host on the LAN except host12. Host12 can ping the desktop. Other hosts on the LAN can ping host12. Traceroute shows that my desktop makes it to the wifi interface of the opnsense router; but then it dies.
I turned off the firewalls on host1 & my desktop so they are not the issue. The log files for both the one that works and the one dosen't looks the same.
Any suggestions on how to track down this problem.
LAN 2025-05-21T11:30:54-04:00 172.16.1.8 172.16.3.12 icmp
WIFI 2025-05-21T11:30:54-04:00 172.16.1.8 172.16.3.12 icmp
LAN 2025-05-21T11:30:46-04:00 172.16.1.8 172.16.3.14 icmp
WIFI 2025-05-21T11:30:46-04:00 172.16.1.8 172.16.3.14 icmp
Once you use IPs outside of your local subnet, you will have to get both firewall rules and routing right. So: Are the subnets defined correctly with the right netmasks and is the default gateway correct and lies within the respective subnet? You did not give any specifics, so you can only verify yourself.
You pointed me in the right direction. host12 has two default routes: on to 3.1 (the lan gateway) & one to 1.1 (the wifi gateway). Apperently, RHEL 9 handles the networks during installation differently then rhel 8 does. Now I have to figure out what RHEL 9 is doing differently.
Thanks for pointing me in the right direction.