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Router's DHCP range influenced by office network IP address

Posted on 2007-04-04
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Last Modified: 2013-12-23
I have moved into a temporary office and connected to their network, using a Fritz!Box 7140 ADSL modem/router as a router. I tried plugging in the network to the FritzBox's DSL port but this didn't work, so I had to use one of the ethernet ports. This gave me internet access but has caused another problem. Although I had set the FritzBox to allocate IP addresses by DHCP in the range 192.168.10.100-150 to my PCs it seems to have picked up the IP address used by the office network of 10.41.0.xxx and allocated those, which has stopped all my printers and network drive working as they have set IP addresses.  I cannot access the FritzBox's control panel unless I unplug it from the office network and reboot everything.  My preferred solution would be to be able to connect to the office network (on 10.41.0.xxx but still have my own mini-network still working on the 192.168.10.xxx range.

Can I use the Fritzbox in this way or should I be using something like a cable modem router?  Any other suggestions for how to get everything working together?

My other worry is that of security, to prevent anyone else getting access to my shared NAS, printers and computers.

I'll be moving back home in a couple of months so the easier the fix is to undo the better!
Cheers
Colin
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Question by:colin_thames
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Accepted Solution

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suggestionstick earned 500 total points
ID: 18849583
Hi

You cannot use the dsl port on the Fritz to connect to office ethernet, and when you plugged it into the ethernet port, it basically acts as a switch and a second DHCP server, and it defeats the purpose of using it, as you are still on their lan.

you can get cheap routers which should be able to segment the lan
I think the following router can do it
http://www.netgear.com/Products/RoutersandGateways/WiredRouters/RP614.aspx?detail=Specifications

best bet is to ask the offiice IT staff if they can segment the Lan for you, via vlans etc


 
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Author Comment

by:colin_thames
ID: 20195511
Sorry it took so long to accept this solution.  I had to give up with the Fritzbox and use software voip but the office IT people managed to install a router with a normal IP range so my printer worked.  Thanks
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