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

x
?
Solved

Problems with SonicWall TZ170 - Verizon DSL Router

Posted on 2009-07-02
7
Medium Priority
?
1,296 Views
Last Modified: 2013-12-14
I am helping a friend setup their network at a small non profit.  They have a Sonicwall TZ170 firewall and have new DSL service from Verizon.  Verizon provides a Westell DSLModem/Router with the connection.   Initially  we were running with double NAT.  The Westell router LAN config has DCHP turned on.  The LAN port of the Westell is connected to the WAN port of the Sonicwall.  The Sonicwall is configured to use NAT with DHCP client for the WAN and to act as a DHCP server on the LAN.  This seemingly worked fine.  We could get onto the internet with no problem in most cases.  The trouble we've seen is that we can't get to certain websites and have trouble logging on to websites that require authentication (some not all sites).   We can ping these sites fine but a web browser just hangs when trying to access the page or complete the login authentication.  It's happened on both Firefox and IE.  As soon as we remove the Sonicwall from the connection and have the desktop computer go straight to the interent through the Westell dsl router, those same website work completely fine.  I tried to adjust the Sonicwall to use Transparent mode, where the sonicwall DHCP server was turned off and the Westell acted as the DHCP server.  In that case we could still browse the internet but we had the same weird problem with certain websites.  In effect, transparent mode did not solve the problem.  So, it seems there is some issue with Double NAT (or maybe not since transparent mode didn't work either).   For now I've just removed the sonicwall from the connection entirely (the Westell has a firewall built in as well) but for obvious reasons we'd like to use that.   Any suggestions would be very helpful.
0
Comment
Question by:emilysam
[X]
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
  • 5
  • 2
7 Comments
 
LVL 9

Accepted Solution

by:
jfer0x01 earned 2000 total points
ID: 24762922
Disable NAT on the Westel Device by setting the Westel modem/router to bridge mode

I will provide a doc to facilitate soon

Jfer
0
 
LVL 9

Expert Comment

by:jfer0x01
ID: 24762945
Found one link

http://www.voipmechanic.com/westelltobridge.htm

let me know if thi works for you

Jfer
0
 

Author Comment

by:emilysam
ID: 24762948
Thanks.  I didn't see any obvious place to do that in the Westell config but maybe your doc will point it out.  
0
Are You Ready for GDPR?

With the GDPR deadline set for May 25, 2018, many organizations are ill-prepared due to uncertainty about the criteria for compliance. According to a recent WatchGuard survey, a staggering 37% of respondents don't even know if their organization needs to comply with GDPR. Do you?

 
LVL 9

Expert Comment

by:jfer0x01
ID: 24763007
Can you see "Expert Mode on Left Side of Screen"?

The ISP tech support may have to do this if not

Jfer
0
 

Author Comment

by:emilysam
ID: 24763028
I'm not onsite and don't have access to the router at this point.  When I'm back over there I'll give it a shot.  It seems the new Verizon routers from westell have been pretty "dumbed" down.   Nonetheless, I'll take a look and see if I can find it.

0
 
LVL 9

Expert Comment

by:jfer0x01
ID: 24844119
any progress?

Jfer
0
 
LVL 9

Expert Comment

by:jfer0x01
ID: 24891059
Hi,

please award points or close question

Jfer
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

In the world of WAN, QoS is a pretty important topic for most, if not all, networks. Some WAN technologies have QoS mechanisms built in, but others, such as some L2 WAN's, don't have QoS control in the provider cloud.
Shadow IT is coming out of the shadows as more businesses are choosing cloud-based applications. It is now a multi-cloud world for most organizations. Simultaneously, most businesses have yet to consolidate with one cloud provider or define an offic…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
Suggested Courses

704 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