Hi All, Any thoughts on this one? I have a router which has had DHCP turned off and we do not know the IP setting of the router. How can I learn the IP without being able to talk to the router? For those that are technicaly minded... is there any way I could manualy do a RARP request using DOS, provided I can figure out its MAC address?? Thanks all. Zim

You could start with running WinIPcfg and looking at the "Default Gateway" setting and see if this gives your the local IP address of the router. Normally small routers would have the local IP address of 192.168.1.1 so that would be a good place to try. You could look at the IP address of systems connected to the router, and it they group into one range, say the normal 192.168.1.xxx range, then you could always unplug all but one local system from the router and run a simple PING scan of all values of xxx = 1 to 255. The only responses you would get would be from the system and the router. Or you could use a port scanner to scan the range. Once you have a short list of possible IP addresses, you could use them to try to access the router. As a last resort, use a scanner program on one machine, unplug the router from the Internet up link and let is scan overnight trying to get a ping response from an IP address.

Thanks for the reply JackG. However the only possibility on your recomendation is the scanner. Any idea where to get one? I cant run ipconfig because that would sugest the router is talking to my host, and like I said DHCP is off. Also the router can accept any Class A, B or C address so short listing aint possible. ;(~

Hi. How about going to the command prompt and doing a net view. This will give your the names of everything on your network, pick out the one you dont recognise and ping it. Hope this helps.

Hi there, Ok, I'm new to routers etc but I'll throw in what I know, and I hope I can help. Do you know the username/password for the router? If so, could you then plug the device into a PC/laptop via the serial port using an adaptor and use the manufacturers software to detect the router. You will then be able to configure the router. Let me know