Changing the security key of a D-Link Router !

[Mared_3400]

Is the router and modem in the same device?
If so contact Ogero and they will give you all the information you need.
It happened to me before.

[Google]

Enter the command prompt (cmd.exe) and type the following:
route PRINT
It will output the interface list, the IPv4 route table and the IPv6 route table.
Take a look at the IPv4 route table. It looks something similar to this:

IPv4 Route Table
================================================== =========================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.101 40
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
192.168.1.0 255.255.255.0 On-link 192.168.1.101 296
192.168.1.101 255.255.255.255 On-link 192.168.1.101 296
192.168.1.255 255.255.255.255 On-link 192.168.1.101 296
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 192.168.1.101 296
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 192.168.1.101 296
================================================== =========================

As you can see, the gateway is 192.168.1.1; This is the router IP address.