On Wed, Mar 23, 2011 at 1:18 PM, Jason Kinene Ssemakula
<[email protected]>wrote:

> Hi fellow competitor :-)
>
> the browser gives the standard cannot find this page error. And during the
> time the server is 'blocked', we can't ping it...


I can confirm that that host is accessible through MTN (and others) but not
through Orange.  It doesn't look like just a proxy issue- the host responds
to pings from other ISPs, but not from Orange.

Is it possible that the host is running some sort of active intrusion
detection system that may be blocking Orange IPs, perhaps after some sort of
suspicious behavior (repeated failed login attempts, etc...)?

It doesn't seem to be a routing issue as some neighboring IPs (96.30.62.147;
96.30.62.150) are perfectly accessible.

I can only think of three possibilities:

   1. Orange is blocking that specific IP address explicitly (seems very
   unlikely)
   2. That host has some active filter / configuration that is filtering
   Orange IP addresses.
   3. That host's routing tables are misconfigured in such a manner that it
   can't route to Orange IPs.
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