I've connected my home and office networks using the VPN Tunneling feature. Both sites have identical Asus RT-N16 routers with Tomato Firmware 1.28.0000 MIPSR2-109 K26 USB AIO (Shibby). Mostly everything works nicely, but the tunneling seems to work only in one direction. The office router is configured as the VPN server, and the internal network is on 10.3.77.0/24. The home network is configured as VPN client, and the internal network is 10.3.78.0/24. The VPN subet on the server is the default 10.8.0.0/255.255.255.0.
From home, I can connect to devices on the office network without any problems. From the office, I cannot connect to devices on the home network. Status looks OK on both routers, so far as I can understand it. From the office, I can connect to the home router via HTTPS.
What should I be looking at to try to resolve this?