RIP Direction      

This option specifies the direction of RIP (Routing Information Protocol) packets. You can enable/disable RIP direction in one of 4 ways:

  1. TX/RX Both
  2. RX Only
  3. TX Only
  4. Disable

After “From first subnet to remote network, you have to do”, if the remote network only allows you to dial in with single IP, please choose NAT, otherwise choose Route. 

Set the remote network IP/subnet in TCP/IP Network Settings so that Router A can direct the packets destined to the remote network to Router B via the VPN connection