Oh, I didn't read William's note properly. Indeed there is probably no
point contacting KTH until their networking is working again. They'll
surely assume the issues are related.

Best to see if the problem clears itself up in a couple of days. They
do say access will be difficult and intermittent.

Bill.

On 29 September 2011 16:59, Bill Hart <goodwillh...@googlemail.com> wrote:
> I am not having any problems accessing the GMP website via Warwick University.
>
> At some time in the past there was a problem similar to what you are
> describing though. No one on campus could access gmplib.org from a
> machine with a campus IP address, but it was possible to access it
> from anywhere else (e.g. from home). Funnily enough our network
> administrator contacted *me* about this after some complaints were
> made, I guess assuming that I had something to do with GMP.
>
> A few years ago I stumbled upon something called an "evildoers list".
> This is a list of IP addresses that are known to be associated with
> spam. Some networking people probably block all IP addresses that find
> their way onto such a list, and just like a no fly list, innocent
> people surely end up having their IP addresses blocked.
>
> Here for example is a link to an organisation that maintains such a
> list: http://www.spamhaus.org/sbl/
>
> You may be able check if your IP address has erroneously ended up on
> such a list. Failing that I guess you could email KTH and ask their
> systems administrator to look into whether they are blocking you for
> some reason? Anyhow, as I said, no problems here at the moment and I
> don't recall having any problems recently. I will check from home
> tonight.
>
> Bill.
>
> On 29 September 2011 16:38, Cactus <rieman...@gmail.com> wrote:
>> Thanks William, I can see this messaage.
>>
>> I have been checking this issue with three simultaneuos connections, one
>> through Tor, one through a neigbours IP address and one using my own IP
>> address.
>>
>> Only my IP adrees is being blocked so I am pretty confident that the site
>> has been set up to block this specific IP address (it alsso works when I
>> switch off my static IP address). .
>>
>> As I said earlier, this hasn't had any impact on me as I have been using
>> Tor.
>>
>> But now that I am aware that _KTH_ servers are being abused in this way, it
>> becomes much more serious.
>>
>>    Brian Gladman
>>
>>
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