Go Back   NETGEAR Forums > Home Products > Wired Networking Products for SOHO Applications > Wired Routers & Modem Gateways

Thread Tools Display Modes
Old May 1st, 2010, 05:42 AM
knot192 knot192 is offline
Junior Member
Join Date: May 2010
Posts: 1
knot192 is on a distinguished road
Default connect 192.168.100.xxx with a 192.168.1.xxx network

Dear forum members

I am trying to connect a
Netgear RP614v4
my LAN with
the LAN (WAN) of our housing estate.
The router of the housing estate
connects then to the internet.

LAN LAN housing estate (WAN)
192.168.100.xxx/ <> 192.168.1.xxx/ <> Internet

Netgear RP614v4 configuration
DHCP Server:
DHCP Clients: - /

When I click 'update' and after the update process
this message pops up
Important Update

To avoid a conflict with your Internet Service Provider, your router's IP
address has been updated to

You must now update the IP addresses in your router's configuration
settings for each relevant service, such as port forwarding and
IP address reservation.

Is there a solution to connect these two networks
with the specification nobody from
our LAN housing estate (WAN) 192.168.1.xxx can access 192.168.100.xxx (my private network)?
I don't wont to use a or a net
because I use the 192.168.100.xxx at many other locations.

Thank you for your help

Reply With Quote
Old May 1st, 2010, 01:09 PM
Walter1902 Walter1902 is offline
Junior Member
Join Date: May 2010
Posts: 1
Walter1902 is on a distinguished road
Default Re: connect 192.168.100.xxx with a 192.168.1.xxx network

Hallo Knot,

are you sure, that the subnet mask of your housing estate is
That would imply that the sub-network address space is and that all clients with IP addresses like 192.168.x.x will reside in this sub-network.
Typically the (standardised) subnet mask of C class networks is

The problem in combination with your private network is, that all clients with addresses like 192.168.100.* belong to both sub-networks, 192.168.x.x and 192.168.100.x. E.g. their membership to a sub-network is not clear and e.g. the router is not able to handle this ambiguity.

I suppose, that the correct sub-network address of your housing estate will be (e.g. subnet It seems as if the listed addresses and the title of your posting also show in this direction.

Kind regards from Germany, Walter
Reply With Quote
Old May 1st, 2010, 04:40 PM
jmizoguchi's Avatar
jmizoguchi jmizoguchi is offline
Senior Member
Join Date: Feb 2007
Location: Kentucky, USA
Posts: 95,338
jmizoguchi is on a distinguished road
Default Re: connect 192.168.100.xxx with a 192.168.1.xxx network

if both network was on class c subnet then you could use double nat and WAN is 192.168.1.x and your RP's LAN can be 192.168.100.x

but because WAN uses class b, it will include the 192.168.100.x so you will need to use other than 192.168.x.x/

use 10.x.x instead or IP of you choice other 192.168.x.x

netgear will change to to avoid conflict and based on WAN with Class B, it will try to avoid. this is normal and nothing you can do.
VPN Case Study (www.vpncasestudy.com)
Our Second To None VPN Related Setup Case Study
"One Stop Solution To Your Netgear VPN Connectivity"
*Visit the site for Non-VPN related Doc & Links* [Windows & Mac user/support]

Most Other Useful Docs -"General Technical Documentation", "Router Reset", "Router Setup", "Print Server Tips", "Remote Admin"
"Wireless Tips"

Forum Policy

June Mizoguchi-i....@vpncasestudy.com
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -8. The time now is 04:55 PM.