Solved

unable to access some websites (yahoo in particular)

Posted on 2013-11-07
7
376 Views
Last Modified: 2013-11-26
I ran a firmware upgrade of a Sonicwall TZ100W from 5.8.1.5 to 5.8.1.13 and now have issues loading some webpages from the lan. I can tracert to yahoo.com and ping same but when opening a browser, the browser just states 'connecting' and never loads page. I can however get to sports.yahoo.com with no issues.

On the sonicwall, I have now turned off all Security services etc and still no joy.
I have set DNS on the server to OpenDNS as well as ISP dns

Another oddity is if I go to abcnews.go.com, the browser loads the header of the page in the browser title bar but then will not load anything else (even after clearing browser cache and resetting browser to defaults).
I can browse many other pages no problem google, msn, bbc, etc
0
Comment
Question by:cyansolutions
  • 4
  • 2
7 Comments
 
LVL 25

Expert Comment

by:Diverse IT
ID: 39631005
Hi cyansolutions,

I'd recommend upgrading to SonicOS 5.9.0.2.

Do you have DNS Rebinding Attack Prevention (Network > DNS) enabled? If so, what is the action set to?

DNS does not function as one would think...it does not try in the order set, e.g. DNS 1, then DNS 2, then if fails try DNS 3. But rather whichever DNS server responds quickest will be the answering server. So typically your ISP is the fastest responding, therefore if you want to test them set only one. then go on the PC and on the command line type ipconfig /flushdns, then re-test and repeat the process each time with a single new DNS server entry.

Check CGSS (AV, AS & IPS) along with Content Filtering Service (CFS) and App Control to make sure it's not being blocked by either security service.

Let me know how it goes!
0
 

Author Comment

by:cyansolutions
ID: 39672470
I've requested that this question be deleted for the following reason:

Issue resolved with tech support assistance
0
 
LVL 25

Expert Comment

by:Diverse IT
ID: 39670458
How did they resolve it?
0
Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

 
LVL 25

Expert Comment

by:Diverse IT
ID: 39672471
At least provide the answer so that it will benefit others and select it as your answer!

I don't understand why you would post this question, and not respond, and then call tech support.
0
 

Accepted Solution

by:
cyansolutions earned 0 total points
ID: 39673914
Final resolution was to scrap config and reconfigure firewall with new firmware. This was the quickest solution that Sonicwall would supply me as the appliance was out of support.
0
 
LVL 25

Expert Comment

by:Diverse IT
ID: 39674431
OK, thanks for getting back to me! Next time hopefully we'll have some dialogue so we can get this answered for you!

Take care!
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

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

Data center, now-a-days, is referred as the home of all the advanced technologies. In-fact, most of the businesses are now establishing their entire organizational structure around the IT capabilities.
If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
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…

895 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

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now