I just got a new Wifi Router and connected it to my ADSL modem. The Wifi router assigns IPs in the range
192.168.0.xxx and the ADSL modem assigns IPs in the range
The ADSL modem is configured using bridge mode, while the Wifi router is configured using PPPoE mode. I have only a basic understanding of networks etc, so please bear with me. :)
When I run
traceroute -n google.com, only my Wifi router is listed as a gateway, the ADSL modem is not. Here's the complete output.
1 192.168.0.1 2.273 ms 3.508 ms 3.500 ms --------->(Wifi router IP) 2 117.205.xx.1 61.515 ms 63.447 ms 65.360 ms ----->(ISP gateway?) 3 18.104.22.168 71.333 ms 73.326 ms 73.501 ms 4 22.214.171.124 117.321 ms 119.263 ms 121.230 ms .....
Also, my routing table doesn't list the ADSL modem either. Here's the output of
Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 ra0 169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 ra0 192.168.0.0 0.0.0.0 255.255.255.0 U 2 0 0 ra0
Can someone explain me the reason behind that? Why is my ADSL modem is being invisible? It's obviously sitting there and routing packets. When I connect to the ADSL modem directly using ethernet, I have to set up port forwarding on the modem. But when I connect to the Wifi router, I don't have to set up port forwarding on both the devices - just the Wifi router and it works. Can someone explain me the concept? Thanks a lot!