How do I add wifi router to existing LAN behind VPN firewall

manelson05 used Ask the Experts™
I was able to add a Netgear WI-FI router  to an existing network today.

I plugged my laptop into the existing networks switch/ VPN firewall I was issued an IP on my laptop  IP became, since I had no access to the VPN appliance as far as loggin in I simply copied the assigned IP, subnet ( and the DFG ( to the new Netgear WI-FI router. Once I was able to login to the Netgear WI-FI router with that IP I was able to configure wireless access.

My challenge is how can I configure the WI-FI router to pull its IP's from the VPN Firewall? I noticed that when I got a desktop computer connected and ran ipconfig it showed me on a 192.168.1.x network?

What is the best course of action to resolving this?

My end goal is that I need all wireless computers to be able to share on a WORKGROUP ( wish it was a domain), in order for this to work or for my windows 7 computers to see the XP shares I need to be onthe same subnet, correct?

Any help would be greatly appreaciated.

Thank you

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I think it would meet your needs to use the router as a switch.
See the attached.
Top Expert 2016

Turn off dhcp in the access point.
Yes, the paper does say "DHCP NOT Enabled" at the router.....
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The DSL modem goes directly to the VPN firewall, this is locked down by a vendor to allow them to remotely access nightly batch files, I cannot alter the topology. The VPN firewall has 8 port switch built in , there is one port free so after assigning an IP within the range of the scope I used that free port to plug the netgear wifi/ router into.

Wouldit be possible for me to see what IP's static or dhcp are issued to each workstation connected to that VPN/ firewall (switch) then rename the WIFI router an IP in that scope then disable the DHCP? wouldnt this work as both the router and the existing LAN workgroup would all be on the same subnet / scope?
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
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I agree with turning off DHCP at the wireless access point. What I do in addition is to hook up the router (access point) from a LAN port on the wireless router (not WAN) to a port on the main switch and then give the wireless router a static IP on the network.

This makes the wireless router a transparent extension of the network on the same subnet. Works fine.  Please let us know if this works for you.

.... Thinkpads_User


I am testing this out tomorrow am will post results.


I would not assign a static address that's in the DHCP pool.  Choose another.
But, it's OK to get a DHCP set of settings to see what else needs to be entered like subnet, gateway and dns server.
Then, set the address statically.

If you're using the wireless router as an access point then you likely *must* set it up static on the LAN side for management access.  Otherwise it doesn't need any particular address.

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