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MSN blocking PMTUD
by Miguel Mata-Cardona 17 May '04

17 May '04

Hi, it seems that Microsoft Network is blocking the path MTU discovery (ICMP fragmentation required but df bit set). That is causing problems because some customers who happen to use GRE tunnels for their branch offices can't access MSMessenger of the Hotmail page. Is there somebody from MSN here? Is there a workaround for this problem without using other type of tunneling? If not, is there any other workaround? -- Miguel Mata-Cardona Intercom El Salvador mmata(a)intercom.com.sv voz: ++(503) 278-5068 fax: ++(503) 265-7024

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Flash crowds and DOS on POTS
by Sean Donelan 17 May '04

17 May '04

All networks are vulnerable to Denial of Service attacks and flash crowds. Broadcasting & Cable investigates the problems with the telephone and SMS voting with the Fox television show American Idol. http://www.broadcastingcable.com/article/CA417981 The difference is when people get a "busy" signal on the phone network, they don't think phone network is collapsing.

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Re: CiSCO IOS 12.* source code stolen
by Per Gregers Bilse 17 May '04

17 May '04

Some years ago I was arguing with my then department head (whom I have the greatest respect for, it should be said) at Cisco that IOS should be turned open source. Needless to say, the suggestion was met with "some" resistance, mildly speaking. I still think the idea has a lot going for it. IOS as such is not a major revenue source, considering equipment prices in general; Cisco could bundle IOS at no cost merely by cranking up the hardware prices by a small amount, and there are no big secrets in the source. Arguably, there are things that some people might find "interesting" to try to dig into, but in terms of making a network box, a lot of the mystery has turned into old hat over the years. Heck, I have a completely independent and in every possible way unencumbered BGP4 implementation under my belt (the core was done well before my stint at Cisco), and in terms of coding complexity I've had much worse on my plate. Going back in time, Cisco's main claim to fame has always been to be there when you needed them, and in the old days they always were. Tony Li, who has posted here, is probably the best known, but there were many others, and they were all equally respected, revered, and honoured, not just for their knowledge and insight, but because, unlike the case at other vendors, they were there at night, at weekends, and at all other unholy hours, when a sinking networker needed them to be there. For the past many years, however, that hasn't been the case, whether or not one is carrying a hugely expensive maintenance contract in one's pocket. In one word, Cisco has turned "corporate". They managed to stay alive for much longer than most other vendors, but eventually they too couldn't remain un-corporate any longer. But, completing the circle, turning IOS into Open Source may be a way to bring back the heady days when Cisco/IOS ruled the world, in a fashion. All it takes is to bring online a ton of dedicated developers, just like any other Open Source project, and we know they're out there. Quoting my favourite American saying, "This is an opportunity". And the ball is in Cisco's court. -- Per

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APNIC new block of addresses
by John Tran 17 May '04

17 May '04

Dear colleagues APNIC received IPv4 address blocks 58/8 and 59/8 from IANA in April 2004 and will be making allocations from these ranges in the near future. This announcement is being made for the information of the Internet community so that network configurations such as routing filters may be updated as appropriate. For more information on the resources administered by APNIC, see: http://www.apnic.net/db/ranges.html For information on the minimum allocation sizes within address ranges administered by APNIC, see: http://www.apnic.net/db/min-alloc.html Kind regards Son ____________________________________________________________________ Resources Services Manager <Son(a)apnic.net> Asia Pacific Network Information Centre phone: +61 7 3858 3100 http://www.apnic.net fax: +61 7 3858 3199 Helpdesk phone: +61 7 3858 3188 email: helpdesk(a)apnic.net Please send Internet Resource Requests to <hostmaster(a)apnic.net> _____________________________________________________________________ _______________________________________________ Apnic-announce mailing list Apnic-announce(a)lists.apnic.net http://mailman.apnic.net/mailman/listinfo/apnic-announce _______________________________________________ apnic-talk mailing list apnic-talk(a)lists.apnic.net http://mailman.apnic.net/mailman/listinfo/apnic-talk

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Antivirus firms discover Bots
by Sean Donelan 16 May '04

16 May '04

I'm glad that anti-virus firms are noticing the growth of Bots. Unfortunately, their guestimating ability is still woefully inadequate. Even frequent updates to anti-virus software won't help. Many bots disable automatic updates and block access to the antivirus sites. By the time anti-virus software detects somethings wrong, its already too late. The solution is to make certain your computer is not compromised, instead of relying on anti-virus to clean it up later. Antivirus firms warn of growing 'Bot' Networks http://www.informationweek.com/story/showArticle.jhtml?articleID=20300880

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RE: Off-Topic: Sunday night beer @ Zeitgeist, NANOG31
by Michel Py 16 May '04

16 May '04

> Rob Nelson > Um. State, City, Zip Code? :) California, San Francisco, 94103-1117 Michel.

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Off-Topic: Sunday night beer @ Zeitgeist, NANOG31
by Jeff Rizzo 16 May '04

16 May '04

If anyone's interested in hanging out Sunday night at a cool place that's _not_ in Union Square, a few of us are meeting at Zeitgeist, which is at 199 Valencia (at Duboce) in the Mission. It's about two blocks off Market Street, you can take the F Market streetcar (not a cable car, mind you!) to get there... I'll be there starting around 6pm Sunday evening. There's also some non-nanog NetBSD types showing up. There's lots of good restaurants in the area (see Woody's guide for details on some - Ti Couz is a couple blocks away, but Valencia is home to _tons_ of restaurants) and beer should be a little less expensive than in any given Union Square bar. :-) -- Jeff Rizzo http://boogers.sf.ca.us/~riz

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fwd: CiSCO IOS 12.* source code stolen
by John Kinsella 15 May '04

15 May '04

For those not on bugtraq...I can't hit securitylab.ru, so would be curious if anybody has more info or confirmation... John ----- Forwarded message from Alexander Antipo <alexander(a)Antipov.info> ----- From: "Alexander Antipo" <alexander(a)Antipov.info> To: <bugtraq(a)securityfocus.com> Subject: CiSCO IOS 12.* source code stolen Date: Sat, 15 May 2004 22:49:50 +0400 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 More information (in Russian, of course) and some little stolen code can be found here: http://www.securitylab.ru/45221.html ----- End forwarded message -----

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Re: Pay-As-You-Use High-Speed Internet?
by Jonathan M. Slivko 15 May '04

15 May '04

Well - you could, to save costs, put a T3 (or multiple T3's) into a specific area that you want to serve and then distribute it from there via Ethernet. This is what we're currently doing with a residential/commercial building. -- Jonathan Daniel Senie wrote: > At 05:22 PM 5/14/2004, you wrote: > >> Hello Fellow NANOG'ers, >> >> I was just thinking about this - tell me if it sounds reasonable? The >> company that I work for developed a piece of technology which, through >> rate-limit statements, allow customers to buy/sell bandwidth "on >> demand". Now, I was thinking: "Why can't we take this technology that >> we've tested successfully in a colo environment and adapt it a little >> bit for personal/buisness-class ISP's to allow them to bill for the >> bandwidth that a customer uses, and only that with the exception of a >> base monthly fee (to cover the DSL/T1 loop, e-mail services, support, >> etc.) of a few dollars. > > > The access line (T-1, etc.) loop charge is substantially larger than the > bandwidth charge. Get the phone companies to price the lines better, and > it might make sense. > > >> Personally, I would like to see a senario where everyone just pays for >> what they use - it would be a much better system for allowing people >> who don't neccessarily need to get on the Internet at high-speed, get >> on high-speed which will not only increase revenue for the ISP's, but >> also for the customer who can now use DSL/T1 access in a much more >> effective way. >> >> Questions? Comments? Suggestions? >> >> -- Jonathan >> >> -- >> Jonathan M. Slivko >> Network Operations Center >> Invisible Hand Networks, Inc. >> help(a)invisiblehand.net >> 1-866-MERKATO (USA) >> 1-812-355-5908 (Intl) >> <http://www.invisiblehand.net> -- Jonathan M. Slivko Network Operations Center Invisible Hand Networks, Inc. help(a)invisiblehand.net 1-866-MERKATO (USA) 1-812-355-5908 (Intl) <http://www.invisiblehand.net>

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Re: Pay-As-You-Use High-Speed Internet?
by Jonathan M. Slivko 14 May '04

14 May '04

George, We do too - it's just a composite of the 5 minute interval samples taken at the switch/router. -- Jonathan George wrote: > Ok. > We do this.. > we charge,,,,,,,, in 1 month intervals :) > George > > > Jonathan M. Slivko wrote: > >> >> Hello Fellow NANOG'ers, >> >> I was just thinking about this - tell me if it sounds reasonable? The >> company that I work for developed a piece of technology which, through >> rate-limit statements, allow customers to buy/sell bandwidth "on >> demand". Now, I was thinking: "Why can't we take this technology that >> we've tested successfully in a colo environment and adapt it a little >> bit for personal/buisness-class ISP's to allow them to bill for the >> bandwidth that a customer uses, and only that with the exception of a >> base monthly fee (to cover the DSL/T1 loop, e-mail services, support, >> etc.) of a few dollars. >> >> Personally, I would like to see a senario where everyone just pays for >> what they use - it would be a much better system for allowing people >> who don't neccessarily need to get on the Internet at high-speed, get >> on high-speed which will not only increase revenue for the ISP's, but >> also for the customer who can now use DSL/T1 access in a much more >> effective way. >> >> Questions? Comments? Suggestions? >> >> -- Jonathan >> -- Jonathan M. Slivko Network Operations Center Invisible Hand Networks, Inc. help(a)invisiblehand.net 1-866-MERKATO (USA) 1-812-355-5908 (Intl) <http://www.invisiblehand.net>

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