Prev-20 Home Next-20 1 msg BGP issues qwest in Burbank, CA 1 msg Looking for Yahoo-SOC contact 1 msg Cachefly Contact 2 msg auth*.ns.uu.net 1 msg auth00/auth100.ns.uu.net down ? 3 msg PCH BGP Archive down? 1 msg Looking for Flickr contacts 2 msg Charter - Southern Oregon routing issues 1 msg Google Contact 1 msg Bob Crooks/SaskTel/CA is out of the office. Microsoft.com PMTUD black hole? \ Nathan Anderson/FSR (6 May 2008) . \ Brandon Butterworth (6 May 2008) . . \ Iljitsch van Beijnum (6 May 2008) . . . \ Nathan Anderson/FSR (6 May 2008) . . . . \ Nathan Anderson/FSR (6 May 2008) . . . . \ Iljitsch van Beijnum (7 May 2008) . . . . . \ Nathan Anderson/FSR (7 May 2008) . . . \ Bjørn Mork (7 May 2008) . . \ Nathan Anderson/FSR (6 May 2008) . \ Robert Bonomi (6 May 2008) . . \ Tomas L. Byrnes (7 May 2008) . . . \ Marshall Eubanks (7 May 2008) . . . \ Nathan Anderson/FSR (7 May 2008) . . \ Nathan Anderson/FSR (7 May 2008) . . . \ Randy Bush (7 May 2008) . . . \ Glen Turner (7 May 2008) . . . . \ Mark Newton (7 May 2008) . . . . \ Patrick Giagnocavo (7 May 2008) . . . \ Rich Kulawiec (7 May 2008) . . . . \ Nathan Anderson/FSR (7 May 2008) . . . . . \ Michael Sinatra (7 May 2008) . . . . . . \ Iljitsch van Beijnum (7 May 2008) . . . . . . . \ Tomas L. Byrnes (7 May 2008) . . . . . . . . \ Nathan Anderson/FSR (7 May 2008) . . . . . . . . . \ Iljitsch van Beijnum (7 May 2008) . . . . . . . . . . \ Nathan Anderson/FSR (7 May 2008) . . . . . . . . . \ Tomas L. Byrnes (7 May 2008) . . . . . . . . . . \ Iljitsch van Beijnum (7 May 2008) . . . . . . . . . . . \ Tomas L. Byrnes (7 May 2008) . . . . . . . . . . \ Nathan Anderson/FSR (7 May 2008) . . . . . . . \ Tomas L. Byrnes (7 May 2008) . . . . . . . . \ Nathan Anderson/FSR (7 May 2008) . . . . . . . \ Bjørn Mork (8 May 2008) . . . . . . . . \ Joel Jaeggli (8 May 2008) . . . . . . . . . \ Iljitsch van Beijnum (8 May 2008) . . . . . . . . . . \ Smith, Donald (8 May 2008) . . . . . . \ Hank Nussbacher (8 May 2008) . . . . . \ Deepak Jain (7 May 2008) . . . . . . \ SML (7 May 2008) . . . . . . \ Tony Finch (8 May 2008) . . . . . . . \ Blaine Christian (8 May 2008) . . \ Stephen Sprunk (7 May 2008) . \ Iljitsch van Beijnum (7 May 2008) . \ Nathan Anderson/FSR (7 May 2008) . . \ Tomas L. Byrnes (7 May 2008) . . . \ Nathan Anderson/FSR (7 May 2008) . . . \ Matthew Petach (12 May 2008) . \ Michael Sinatra (7 May 2008) . \ Scott Weeks (8 May 2008) . \ Janet Sullivan (8 May 2008) . . \ Niels Bakker (8 May 2008) 4 msg Strange network behaviour 1 msg Was Burma off the air due to the Cyclone ? 17 msg OSPF minutia, and, technote publication venues 2 msg Deadline Extension UBICOMM 2008, September 29 -... 1 msg [Fwd: Re: outages] 2 msg outages 21 msg Did Youtube not pay their domain bill? 9 msg Introducing latency for testing? 33 msg fair warning: less than 1000 days left to IPv4 ... Prev-20 Home Next-20

Prev-Msg Prev-Thread Nanog May-2008 Next-Thread Next-Msg Subject: Re: Microsoft.com PMTUD black hole? Group: Nanog From: SML Date: 7 May 2008 On 7-May-2008, at 17:07:06, Deepak Jain wrote: > Many non-SP IT folks think they understand TCP, grudgingly accept > UDP for DNS from external sources and think everything else is > bollocks. Many *might* have a fit if they saw Microsoft accepting > ICMPs because that seems inconsistent with their knowledge of turn- > the-knob network security. To their view, their Linksys/Netgear/ > whathaveyou COTS firewalls block everything too. > > I don't think I'm exaggerating here. No, you are not. I have seen the same from "firewall engineers" at large companies, people who, supposedly, have done "network security" for years. Even after showing them numerous Web sites detailing current best practices, especially Rob Thomas's fine site, these folks would not change their practices. Some days it is hard to not give in to the "I give up" feelings. _______________________________________________ NANOG mailing list NANOG http://mailman.nanog.org/mailman/listinfo/nanog Prev-Msg Prev-Thread Nanog May-2008 Next-Thread Next-Msg

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