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 192.168.1.xxx
.
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?)
3 218.248.174.246 71.333 ms 73.326 ms 73.501 ms
4 115.114.57.249 117.321 ms 119.263 ms 121.230 ms
.....
Also, my routing table doesn't list the ADSL modem either. Here's the output of route -n
.
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!