Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17


How do I setup a wireless router behind a sonicwall firewall for full WIFI LAN access?

Posted on 2008-06-17
Medium Priority
Last Modified: 2010-07-27
I recently took over administration of a small business network that has a DSL connection to the internet, leading to a SonicWALL TZ70 firewall, which is connected to a switch to the the LAN.  The TZ70 acts as the DHCP server for the LAN, and handles IP addressing for all clients, including one W2K3 server.  All is working as it is supposed to within the LAN.

As well as the existing infrastrcture, there is also a Linksys WRT54G wireless router that provides wireless WIFI access to the LAN and the server.  This router was reset to factory defaults (the password was lost), and I was able to activate connections to the linksys wirelessly via WPA, and internet via the TZ70 are successful.  However, I am unable to access the server or any LAN shares / components.  Since the settings were reset to factory default and nothing else changed on the LAN, I've obviously missed a configuration setting on the Linksys.

Being a net newb, I'm lost on this one...if someone can provide me with instructions on what I'm missing here, I'd really appreciate it.
Question by:LastSaskPirate
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
LVL 19

Expert Comment

ID: 21801396
I replaced the software in my Linksys WRT54GL with software I got from
because it has extra features, so I can't look into my linksys default config directly and tell you what to change, but I assume that the problem has to do with the WINS server value that the router is passing out.  If the wireless network is on a different LAN eg for LAN and for wireless then they won't automatically be able to browse the other network without assistance.

if you could change the Access Point to be a wireless bridge instead of a routed network, that might also fix it.

LVL 18

Accepted Solution

Johnjces earned 2000 total points
ID: 21803435
The Linksys needs to be an Access Point and some wireless routers can be used as such by not using the wired WAN port, turning off DHCP and using only the wireless side and the (most routers) one of four switched ports to the regular LAN.

Again, some routers will do this others may not and I do not know the LinkSys, but it should. I know that D-Link routers can do this.

Personally, I would recommend purchasing specifically an Access Point for your LAN. It just makes things easier!

LVL 19

Expert Comment

ID: 21808462
If you can't disable the WAN port in the standard linksys software then you can always download the open source firmware from dd-wrt which does allow you to do this.

Author Closing Comment

ID: 31468418
Thanks very much for the help on this, not to mention the education!  I was able to get this working by making both changes you list (not using the WAN port of the router and turing off DHCP on it), but it took me a bit of tinkering, as certain settings on teh router kept throwing me off.  One of which was "remote" and "wireless" admin...once I turned off the DHCP, I was unable to administer it without using a direct, wired connection, so it took a bit of trial and error to get it working.

I definitely have a different setup than what was previously in place, as I'm now positive that it had been setup with DHCP enabled and possibly (at least I thought it was) using the WAN port...I hadn't tried looking at the WINS setting, as bevhost sggested...maybe that was something that allowed the old configuration to work, though I realize now that it was probably by chance, and may have left my network open to error.  Maybe I can give it a try sometime whn I have time (yeah, right!).

One thing that I fouind in my net-travels in shooting this problem was some background on the may be interested in this, as this particular linksys model is somewhat famous:

Thanks again!

LVL 18

Expert Comment

ID: 21814107
Thanks! I am glad that my simple not in detail answer pointed you in the correct direction.

The WRT54G is infamous and several OpenSource projects on exist for this router.

I have never played with one and I guess it is about time!

Thanks again and good luck!


Featured Post

Survive A High-Traffic Event with Percona

Your application or website rely on your database to deliver information about products and services to your customers. You can’t afford to have your database lose performance, lose availability or become unresponsive – even for just a few minutes.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is a step by step guide on how to create a basic PTP link using Ubiquiti airOS devices. This guide can be used on the following Ubiquiti AirMAX devices. Nanostation, Bullets, AirBridge, Nanobeam, NanoBridge to name a few. Please review …
In this article we have discussed about the OS X EI Capitan and how to fix Wi-Fi issue in OS X El Capitan. We have explained how to delete system level preferences and create a new Wi-Fi location to resolve Wi-Fi issue.
This Micro Tutorial will show you how to maximize your wireless card to its maximum capability. This will be demonstrated using Intel(R) Centrino(R) Wireless-N 2230 wireless card on Windows 8 operating system.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
Suggested Courses

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question