Can't connect to router

Question

Possible Duplicate:
How to reset a Fritz!Box DSL router to factory settings?

I need to change the setting of router Fritz Box. The setting were set by another person. I can't connect to router using cable, may be standard port or address were changed. So the only option is to switch to factory settings. Usually there is a button which deletes all the settings. I read the documentation and they tell to call the number #991*15901590* on the router. Do I have to connect telephone to router?

Solution 1

No matter how the FritzBox is configured, it is always reachable via ethernet cable http://192.168.178.254 - there you'll find an option to reset to factory settings.

Solution 2

Connect to the router via Ethernet or WiFi and negotiate an IP address via DHCP (most Operating System configurations will do that automatically). The Fritz!Box should now be set as the default gateway. You can use route on the command line to determine it.

If DHCP doesn't work anymore, you can still scan the whole private IPv4 address range. For example, nmap -sP 192.168.0.0/16 10.0.0.0/8 172.16.0.0/20 will list a Fritz!Box without a configured DHCP server (but functioning IPv4).

Comments

[MaQleod]

What model is it that you have?

[damluar]

DCHP seems to be not working. And how can I connect if I don't know the subnet?

[damluar]

I just looked at wireshark. No DHCP Offer comes in response to DHCP Discover

[ott--]

192.168.178.1 is the standard address (factory setting or after a reset). 192.168.178.254 is always available, too. To reach that address, your interface on the desktop must be in the same subnet 192.168.178.0, and it works only via ethernet cable.

[damluar]

Not available. Checked 1 hour ago

[ott--]

What model is that FritzBox. You could also connect a phone to the RJ-11 connector, then dial that #991*15901590*.