Solved

Google DNS servers in Brazil

Posted on 2011-09-12
3
1,057 Views
Last Modified: 2012-06-21
We have a sonicwall NSA 240 in our office in brazil. The DSL carrier there has our internet over PPoE. The strange thing is that they do not have any DNS servers of their own. They (the DSL carrier) listed Google's DNS servers for use 8.8.8.8 and 8.8.4.4 (we are using IPv4 for LAN).

The problem is that some web sites are available and some sites are not. Completely random. http://globo.com will not load, in a browser (we tried all the big three browsers (FF, IE, Chrome) but other sites like amazon.com.br will load without a problem. All machines are running Windows 7 with the firewall turned off.

I have tried DHCP and static IP. Same result. I have tried it with the wireless AP and with the computer plugged into the 240 via ethernet. Same result.

Everything else on the nsa 240 is factory except the changes that were made to network (LAN and WAN setup) and VPN (for site to site)

We thought maybe it was because the VPN between sites was active, but when when we disconnected the VPN between our US office and Brazil office, and rebooted the brazil office sonicwall, still the same issues were happening. Even when I removed the VPN profile on the 240 for the site to site still we got the same issue.

At this point I am open to any suggestions.

Thanks

0
Comment
Question by:05fdml
  • 2
3 Comments
 
LVL 12

Expert Comment

by:Sommerblink
ID: 36527245
I personally like GTE (Verizon)'s public DNS servers located at:
4.2.2.2
4.2.2.3
4.2.2.4
4.2.2.5
4.2.2.6

They are also anycast'ed so you should connect to a local server. Any different results?
0
 
LVL 7

Expert Comment

by:kpmartin
ID: 36529561
I prefer to use OpenDNS.com .  Besides being one of the best DNS servers it also has a plethora of configurable security options.  Give it a shot!
208.67.222.222
208.67.220.220
0
 
LVL 7

Accepted Solution

by:
kpmartin earned 500 total points
ID: 36590826
Did you try OpenDNS yet; looks like your on Siesta!?  Here's a blurb:
http://www.eweek.com/c/a/IT-Infrastructure/Google-OpenDNS-Spur-Global-Internet-Speedup-Group-714079/
I've got no skin here but it really does work.
0

Featured Post

Guide to Performance: Optimization & Monitoring

Nowadays, monitoring is a mixture of tools, systems, and codes—making it a very complex process. And with this complexity, comes variables for failure. Get DZone’s new Guide to Performance to learn how to proactively find these variables and solve them before a disruption occurs.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
cradle point vpn to sonicwall 5 126
Sonicwall SHA issue 4 49
Best adsl router for small MS network 6 73
Palo Alto site-to-site vpn monitoring 5 53
I found an issue or “bug” in the SonicOS platform (the firmware controlling SonicWALL security appliances) that has to do with renaming Default Service Objects, which then causes a portion of the system to become uncontrollable and unstable. BACK…
Citrix XenApp, Internet Explorer 11 set to Enterprise Mode and using central hosted sites.xml file.
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

696 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