I have a project that includes a firewall and two routers. I have created two subnetworks with VLSM for both routers and I have a cable that represents a serial connection between them. The firewall should be between the internet and the first router that I have used. I have no trouble about pinging routers' ethernet interfaces and serial connections, I think my network is working well. However, I can connect to the Internet from firewall but cannot access it from the other routers. Here is my firewall and network configuration:
-Ethernet 0/1 is connected to the router-1 with a cat5 cable. This port's IP address is 10.1.1.30(You'll see it is a part of the network that is created for router-1) -Ethernet 0/0 is connected to the Internet.
-Ethernet 0/0 port has the IP 10.1.1.1/27 -Serial 0/0 port has the IP 10.1.1.81/30
-Ethernet 0/0 port has the IP 10.1.1.65/28 -Serial 0/0 port has the IP 10.1.1.82/30
PS:I have used RIPv2 on all devices.
Like I said, I can connect to the Internet from the fw but cannot from the routers. Thanks ^_^.