July 2005 - Test - lists.nanog.org

Clueful security contact at Adelphia?
by Howard C. Berkowitz 12 Jul '05

12 Jul '05

Could someone at Adelphia, who understands there is a difference between newsgroup trolling and newsgroup denial of service, contact me offline? Thanks! -- Howard C. Berkowitz 5012 25th Street South Arlington VA 22206 (703)998-5819 voice (703)998-5058 fax (alas, sometimes poorly operated by "helpful" cat)

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Re: London incidents
by Francesco Usseglio Gaudi 12 Jul '05

12 Jul '05

My little experience is that cell phones are in the most of cases nearly congenstion: a simple crow of people calling all together can shut down or delay every calls and sms Francesco

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2005 SC Elections
by Betty Burke 12 Jul '05

12 Jul '05

Reminder -- NANOG Steering Committee elections begin today. If you have not verified your email address, please refer to <http://www.nanog.org/elections.html> for details. We look forward to the first NANOG elections process! All best, Betty Burke

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ITU-D report on exchange points in Africa
by Suresh Ramasubramanian 12 Jul '05

12 Jul '05

http://www.itu.int/ITU-D/treg/publications/AfricaIXPRep.pdf -- Suresh Ramasubramanian (ops.lists(a)gmail.com)

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Need BOGIES list
by Geoff White 12 Jul '05

12 Jul '05

Hello All. I'm having trouble with Cracking Attempts and DoS attacks from a lot of places in China :) My client doesn't do any business in that region so they don't mind If I block the entire sub-continent :) Does anyone have a bad-guy list (or part of one) that I can use to get started? I'm using pf under OpenBSD 3.7 as a firewall box. E-mailing me off line is fine geoffw

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Re: London incidents
by Brandon Butterworth 12 Jul '05

12 Jul '05

> I think the world has shown that cellphones have been used over and over > to detonate explosive devices. They can go back to alarm clocks with big bells. The point is people are only inconveniencing themselves in accepting such knee jerk responses in the name of fighting terrorists. The terrorists don't care, self imposed constant fear is just doing their job for them. You may as well go hide in a cave just in case, the rest of us would prefer to not have our personal freedom infringed brandon

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Advanced port mirroring with filtering
by Nathan Allen Stratton 11 Jul '05

11 Jul '05

I wanted to ping the list and get some feedback on switches with advanced port mirroring with filtering. Right now we are using Cisco 6509s with SUP 720s in a VoIP application. The routers and switches work well, but we keep hitting the wall on port monitoring because cisco only lets us have two monitoring ports. Lets say I have a 32 port switch with all sorts of SIP hardware on it. I am looking for a switch that would let me do someting like this: Mirror all POP ISP traffic to NetVMG box Mirror all SIP and RTP traffic to VoIP Hammer probe Mirror all SIP (5060 65060) traffic to signaling to Ethereal box Mirror all RTCP traffic to VoIP quality engine ><> Nathan Stratton BroadVoice, Inc. nathan at robotics.net Talk IS Cheap http://www.robotics.net http://www.broadvoice.com

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RE: London incidents
by Fergie (Paul Ferguson) 11 Jul '05

11 Jul '05

Our thoughts and prayers are with everyone in London. with regard to telecommunications services, Tim Richardson writes in The Register: [snip] Phone networks have been jammed today following a series of blasts that hit London's public transport network this morning. Mobile networks in particular have been put under pressure as people use their phones to contact friends and family following the explosions. In a statement Vodafone said: "Understandably we are experiencing significant network congestion but we are working closely with the emergency services. "In these circumstances, we would ask all of our customers in Central London to avoid making unnecessary or lengthy phone calls. BT has also reported that its network is intact although it is witnessing a massive spike in calls. [snip] http://www.theregister.co.uk/2005/07/07/london_phone/ - ferg -- "Neil J. McRae" <neil(a)DOMINO.ORG> wrote: Mobile networks have been switched in to emergency services only owing to congestion and concern that devices may be activated by mobile. However the cause of some of the these incidents is still not clear. -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(a)netzero.net or fergdawg(a)sbcglobal.net ferg's tech blog: http://fergdawg.blogspot.com/

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RE: London incidents
by Brad Knowles 11 Jul '05

11 Jul '05

At 10:40 AM +0100 2005-07-11, Michael.Dillon(a)btradianz.com wrote: > Some of the problems on the mobile networks were the > result of a protocol to reserve mobile capabilities for > the emergency services. The police have the authority to > switch cells to emergency service and then people with > specially registered SIM cards in their mobile can > take priority. Presumably, some amount of capacity is > also held in reserve for these people as well. Yes, a certain amount of capacity can be placed on reserve for the holders of priority access SIMs. You only get those issued to you by the government. This can include critical emergency services personnel, selected government officials, important members of the financial services community, etc.... I don't know the specifics of how much capacity is reserved, but this sort of thing has been done on telecommunications networks for a long time. Back before cell phones existed, you could have "flash" traffic on the DDN or even the PSTN, and when placing a flash call the phone system would disconnect anyone that stood in your way of getting the connection you wanted. You had to be using special telephone equipment, or connected to a special operator with the right equipment, and you had damn well better be sure that your call was worthy of knocking anyone else off the network, but the capability was there. Even the President would normally make his calls at lower than "flash" priority. There were lower levels of priority that you could also use, but "flash" was the top one that I heard about. > I had moved the weekend before and my landline was not > yet installed. Also, I live near a large hospital. I noticed > that my mobile didn't function at all even late on Thursday > unless I left home and travelled a kilometer or two from > the hospital. Presumably, the cells in this suburban > location had also been switched to emergency service. Could be, but I'd be willing to bet it was more a matter of the cell just being overloaded. Traffic reservation for priority access SIMs is only going to take a small amount of the bandwidth available. The problem is that even normal heavy traffic can overload a cell, and what was seen during the time you're talking about was anything but "normal heavy". -- Brad Knowles, <brad(a)stop.mail-abuse.org> "Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." -- Benjamin Franklin (1706-1790), reply of the Pennsylvania Assembly to the Governor, November 11, 1755 SAGE member since 1995. See <http://www.sage.org/> for more info.

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Cell phone links disabled in New York tunnels
by Fergie (Paul Ferguson) 11 Jul '05

11 Jul '05

For those of you living and/or working in the NYC metro area, Reuters reports that: [snip] Cellular phone service has been shut off in four busy New York commuter tunnels since last week's deadly blasts in London, officials said on Monday. No specific reason was given for the move but cell phones have been used to trigger bombs in the past. Cell phone service is disabled in the Holland and Lincoln tunnels that connect Manhattan to New Jersey under the Hudson River, the Midtown Tunnel to the city's Queens borough and the Battery Tunnel to Brooklyn, officials said. The move came immediately after the bombings in London on Thursday, said a spokesman for the Port Authority of New York and New Jersey, which oversees operation of the Lincoln and Holland tunnels. [snip] http://today.reuters.com/news/newsarticle.aspx?type=technologyNews&storyid=… - ferg -- "Fergie", a.k.a. Paul Ferguson Engineering Architecture for the Internet fergdawg(a)netzero.net or fergdawg(a)sbcglobal.net ferg's tech blog: http://fergdawg.blogspot.com/

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