On Mon, Feb 25, 2008 at 09:13:23AM +0000, Alexander Harrowell wrote:
Interesting that (according to Renesys) BT reconnected about 500 networks in Pakistan after the big fibre cut. I wonder if there's any data around that would tell us who filters and who doesn't?
based on my experience of routing (and de-routing) my own legacy space as well as some RIPE space through PTCL, i know they have procedures in place to restrict what their customers can send to them, so it makes sense that they have a clue as to how to control what they send out. probably fat fingers, and probably fat wobbly fingers in a rush to comply with a government directive.
On Mon, Feb 25, 2008 at 9:02 AM, Jim Mercer <jim@reptiles.org> wrote:
having built an ISP or two in pakistan, PTCL (Pakistan Telecom) is not the sole provider of bandwidth to the country, although it likely carries the bulk of traffic to the country.
operationally, there are a number of jurisdictions which filter content and connectivity on a variety of basis.
adjusting the BGP announcements is a fairly quick and sure way to hobble connectivity to specific content. although, it is quickly bypassed by shifting the content to other addresses and domain names.
i'm sure that this was an accidental leakage, and that appropriate corrections were/are taken in due course.
-- Jim Mercer jim@reptiles.org +971 55 410-5633 "I'm Prime Minister of Canada, I live here and I'm going to take a leak." - Lester Pearson in 1967, during a meeting between himself and President Lyndon Johnson, whose Secret Service detail had taken over Pearson's cottage retreat. At one point, a Johnson guard asked Pearson, "Who are you and where are you going?"
-- Jim Mercer jim@reptiles.org +971 55 410-5633 "I'm Prime Minister of Canada, I live here and I'm going to take a leak." - Lester Pearson in 1967, during a meeting between himself and President Lyndon Johnson, whose Secret Service detail had taken over Pearson's cottage retreat. At one point, a Johnson guard asked Pearson, "Who are you and where are you going?"