Reply to built-in vpn (L2TP over IPSec) not working with Monterey I also got the problem with vpn L2TP Over IPsec after upgrade to Monterey. It work fine with Big Sur 11.6, but after upgrade to Monterey 12.0.1, after VPN connected, I can ping to my server, but cannot telnet, ssh to server port 22 App & System Services Hardware Nov ’21