04-22-2008 10:40 AM
12-06-2008 08:51 PM
12-07-2008 08:53 AM - edited 12-07-2008 08:54 AM
02-12-2009 01:33 PM
In my case, my router suddenly started blocking Yahoo and Flickr ... but nothing else. It's a WRT54G with latest firmware update. It worked fine until today. After reading all of the above to no avail, my problem was solved by changing the MTU setting to 1482. (1492 does not work; lower values do, e.g., 1450). Hope this helps. A day wasted, but so far, I've avoided spending money on the problem.
05-22-2009 12:50 AM
I found the solution for this problem, Yes! Because everyone with this problem tried to reach a frequently accessed site that suddenly stopped working. It looks like that somewhere in the router the register full is with this address. Solution is change the router MAC address. In the software you can clone the address of your PC or another PC. Next step is to reset you modem so it will reconnect with you router. It works for me. Changing the MTU didn't help for me.
I came up with this solution after realizing that without router, direct connected to the modem I could reach this blocked website.
06-06-2009 08:45 PM
04-20-2010 10:09 AM
I recently ran into a similar problem with a customer. We were able to isolate a little more information that may be helpful by analysing our server log files. Each time the problem happened, we saw a spike of requests for the same file (in our case, an image referenced in a jquery style sheet). We couldn't reproduce the behavior, it seems to be a bug specific either to that customer's IE6 version or browser settings. Perhaps the router sees the spike of requests, thinks it is a denial of service attack, then shuts down the server's ip address?
So if you are a site owner, look for spikes of requests, if they are by design you may be able to fix the problem by reducing network chatter. It may be caused by a bug in IE6 though in which case there isn't much you can do.
We ultimately recommended the customer switch to a router from a different manufacturer since these technical solutions were too onerous and difficult to verify.
04-20-2010 11:22 AM
When you replace the router, you probably use/get another MAC address and the problem will be disappeared until the register is full again. So will it's a working solution to change the router, to change a MAC address is simple and working to.