Solved

Inability to reach one website on 4 different browsers

Posted on 2012-03-22
5
325 Views
Last Modified: 2012-07-30
There is a problem reaching one particular website from a private network.
The issue is with www.piaad2.org.
No client using any Windows OS Win XP SP3, Vista, Windows 7, Server 2003, Server 2008, using any browser( IE (7 and 8), Chrome, Firefox or Safari is able to reach this website.
All machines on this network are behind both a Cisco ASA 5505 and a Cisco 1841, which in turn is using a Comcast modem as a gateway.

Take ANY of these machines as is, attach it to a separate private network behind a different Comcast modem with a different external ip in a nearly identical setup, (ASA5505, 1841 router) and they are able to reach the website. The website is available  anywhere else in the world, so an error in the website seems unlikely. The webmaster for the site says the external IP the private network is behind is not being blocked by their and confirms the website is not experiencing problems elsewhere.

The errors from each browser are below.

IE (both 7 and 8)
Internet Explorer cannot read this webpage format
 HTTP 406  
   What you can try:
     Go back to the previous page.
      More information
This error (HTTP 406 Not Acceptable) means that Internet Explorer was able to receive information from the website you visited, but the information was not in a format that Internet Explorer can display.
For more information about HTTP errors, see Help.

Firefox Error
Not Acceptable
An appropriate representation of the requested resource / could not be found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Chrome
Not Acceptable
An appropriate representation of the requested resource / could not be found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Safari
Not Acceptable
An appropriate representation of the requested resource / could not be found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
406 Not Acceptable
http://piaad2.org
0
Comment
Question by:jsvarga88
  • 3
  • 2
5 Comments
 
LVL 26

Expert Comment

by:Fred Marshall
ID: 37754994
Two things:

This sort of problem can be caused by the MTU being set to an unfortunate value.  Usually it's on the computer itself but might be on the router/gateway.  Saw this recently on a new HP computer with MTU of 1504.

Another cause lately has been the existence of the Ask Toolbar in IE.  But I wouldn't think it would affect all browers the same way.  

Another cause is that the router has temporarily "lost its mind".  This does happen and the results are the sort you're seeing.  Reboot the router and see if this isn't it.
0
 

Author Comment

by:jsvarga88
ID: 37761383
Thanks for the esuggestion.
The MTU on the router is set to 1500.
The Ask toolbar in not on all the machines in the shop.
A reboot of the firewall failed to correct the problem.
0
 
LVL 26

Accepted Solution

by:
Fred Marshall earned 500 total points
ID: 37761398
What's the MTU on the computer?  I don't have to deal with this issue very often.  But it seems to me that there has to be agreement between the computers and the router.  Maybe this router is "different" in that regard?

Another cause is antivirus scanning in the router.  I've had problems with this sort of thing with similar results.  
- I've seen problems getting Microsoft and other updates that are provided via edge servers at Akamai.  The issue was our virus scan in the firewall.
- I've had problems opening Yahoo! Calendar for the same reason.
- Might you have web filtering that blocks that page?  Maybe in this ASA or other box in the chain?
0
 

Author Comment

by:jsvarga88
ID: 37835280
AV scanning is not active on the firewall or router, and there is no web filtering in place.
MTO on the computer is not the issue at 1500- move it to a different network and the site is accessable.
0
 

Author Comment

by:jsvarga88
ID: 37881873
No solution has been found so I am requesting this question be closed.
0

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

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

Now-a-days, indirectly, postal services have been replaced by email services. Yes, whenever we hear the word "email" a lot of people only think of gmail. Some people still think that email and gmail are one and the same thing :-). Let's see some …
I had to do a bit of research to find the answer to this question so I thought I'd share my results.  Due to our outdated mainframe systems, we need to downgrade IE9 to IE8 in order to stay compatible.  We also needed to downgrade Java.  In order to…
This Micro Tutorial will demonstrate how nuggets on the Web are formatted by using Chrome Developer Tools. These tools would not only view the site's CSS but it can also modify it and save the CSS to use on your own site.
How to create a custom search shortcut to site-search Experts Exchange using Google in the Firefox browser. This eliminates the need to type out site:experts-exchange.com whenever you want to search the site. Launch your Bookmark Menu: Press 'Ctrl +…

821 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