RE: What DNS Is Not

2009-11-09 Thread Buhrmaster, Gary


 -Original Message-
 From: bmann...@vacation.karoshi.com
 [mailto:bmann...@vacation.karoshi.com]
 Sent: Monday, November 09, 2009 4:32 PM
 To: Patrick W. Gilmore
 Cc: NANOG list
 Subject: Re: What DNS Is Not

...

   notbeing Paul, its rude of me to respond - yet you posted this
   to a public list ... so here goes.
 
   Why do you find your behaviour in your domains acceptable and yet
 the same behaviour in others zones to be a Bad Thing and should be
 stopped?

Ok, devils advocate argument.  

Is there is a difference between being a domain owner
(Patrick wanting to wildcard the domain he has paid for),
and a domain custodian (Verisign for the .com example)
in whether wildcards are ever acceptable in the DNS
responses you provide?




RE: Dan Kaminsky

2009-08-07 Thread Buhrmaster, Gary
 doesn't the iphone has an app to decode qr-codes similar to the one
 built into almost all keitai here in japan.
 
 http://en.wikipedia.org/wiki/QR_Code

Yep.  Called iMatrix.  (There are probably others too)



RE: MGE UPS Systems

2009-07-13 Thread Buhrmaster, Gary
 Or are you talking about Eaton's?
 
 http://www.eaton.com/EatonCom/SearchResults/CT_136576

History (as I recall it).

Schneider Electric bought MGE late 2003
Schneider Electric bought APC late 2006 
  (and merges APC/MGE product line, which has overlap)
Schneider Electric sold small MGE product line
  to Eaton late 2007 (these are the office/small business
  type UPSs, as I recall, and overlapped the APC 
  consumer/office/small business offerings).
 

I do not know the plans regarding how Schneider
Electric will deal with the remaining overlap in
the high end APC/MGE UPS business.



RE: 97.128.0.0/9 allocation to verizon wireless

2009-02-08 Thread Buhrmaster, Gary

 Does ARIN lack sufficient resources to vet jumbo requests?

I am fairly confident ARIN followed their policies.
The existing policies allow anyone (including Verizon)
to make a request for (and receive) a /9 with appropriate
justification.

If you do not like the policies, please participate
in the ARIN policy process and work to change them.

  Mailing lists:

  arin-p...@arin.net

  Open to the general public. Provides a forum to
  raise and discuss policy-related ideas and issues
  surrounding existing and proposed ARIN policies.
  The PPML list is an intrinsic part of ARIN's Policy
  Development Process (PDP), which details how
  proposed policies are handled.

http://www.arin.net/mailing_lists/index.html



RE: Leap second tonight

2009-01-05 Thread Buhrmaster, Gary

 It's theoretically possible for leap seconds to be introduced 
 at the end of March and September. 

As I recall, NTP supports leap seconds every month,
for which there is a prediction that even this
would be insufficient at some point in this
millennium (depending, of course, on the actual
rotation speed).  There have been on again/off again
talks to abolish the leap second for quite a number
of years.

Gary



RE: an over-the-top data center

2008-11-28 Thread Buhrmaster, Gary
 

 -Original Message-
 From: Steven M. Bellovin [mailto:[EMAIL PROTECTED] 
 Sent: Friday, November 28, 2008 5:35 AM
 To: nanog@nanog.org
 Subject: an over-the-top data center
 
 http://royal.pingdom.com/2008/11/14/the-worlds-most-super-desi
 gned-data-center-fit-for-a-james-bond-villain/
 (No, I don't know if it's real or not.)

One could consider purchasing the underground tunnels
in downtown London that BT is selling to build a
competing over-the-top data center.

http://www.nytimes.com/2008/11/28/business/worldbusiness/28tunnel.html



RE: Advice/resources for setting up TACACS server

2008-11-07 Thread Buhrmaster, Gary

 Do you have any suggestions for a free tacacs server which 
 will run on linux ? I have so far been unable to find any
 and the tacacs+ source code hasn't been updated since
 around 2000

Available (and maintained) at:

http://www.shrubbery.net/tac_plus/

(direct download link: ftp://ftp.shrubbery.net/pub/tac_plus)

The latest was last updated end of year 2007



Multiple DNS implementations vulnerable to cache poisoning

2008-07-08 Thread Buhrmaster, Gary

Multiple DNS implementations vulnerable to cache poisoning:

http://www.kb.cert.org/vuls/id/800113

(A widely coordinated vendor announcement.  As always,
check with your vendor(s) for patch status.)

Gary



RE: Best utilizing fat long pipes and large file transfer

2008-06-12 Thread Buhrmaster, Gary
 Hi,
 
 I'm looking for input on the best practices for sending large 
 files 

There are both commercial products (fastcopy)
and various free(*) products (bbcp, bbftp,
gridftp) that will send large files.  While
they can take advantage of larger windows
they also have the capability of using multiple
streams (dealing with the inability to tune the
tcp stack).  There are, of course, competitors
to these products which you should look into.
As always, YMWV.

Some references:
http://www.softlink.com/fastcopy_techie.html
  (Some parts of NASA seem to like fastcopy)
http://nccs.gov/user-support/general-support/data-transfer/bbcp/
  (Full disclosure, bbcp was written by someone who sits
  about 3 meters from where I am sitting, but I cannot find
  a nice web reference from him about the product, so I am
  showing a different sites documentation)
http://doc.in2p3.fr/bbftp/
  (One of the first to use multistream for BaBar)
http://www.globus.org/grid_software/data/gridftp.php
  (Part of the globus toolkit.  Somewhat heavier weight
  if all you want is file transfer.)
http://fasterdata.es.net/tools.html
  (A reference I am surprised Kevin did not point to :-)
http://www.slac.stanford.edu/grp/scs/net/talk/ggf5_jul2002/NMWG_GGF5.pdf
  (A few year old performance evaluation)
www.triumf.ca/canarie/amsterdam-test/References/010402-ftp.ppt 
  (Another older performance evaluation)


Gary


(*) Some are GPL, and some (modified) BSD licenses.
Which one is free enough depends on some strongly
held beliefs of the validator.




RE: www.Amazon.com down?

2008-06-06 Thread Buhrmaster, Gary

 www.amazon.com returns:
 
 Http/1.1 Service Unavailable
 
 Anyone have a URL for a network/etc status page, or info on 
 the outage?  Been that way for a while this morning.

Apparently, Amazon has fallen over, and cannot get up.

http://news.cnet.com/8301-10784_3-9962010-7.html
 




Re: [NANOG] IOS rootkits

2008-05-19 Thread Buhrmaster, Gary

 I understand *why* we are worried about rootkits on 
 individual servers.  
 On essentially closed platforms this isn't going to be 
 rocket science.
 It may seem odd by today's BCPs, but booting up from golden 
 images via 
 write-protected  hardware or TFTP or similar is pretty 
 straightforward 

Since todays bootstrap codes are in EEPROM (or
equivalent), if you get root once, you can
have root forever.  Faking file system content
(and real time replacing of code) is the core
of any current (good) Linux/Mac/Windows rootkit.
Cisco/Juniper/Force10/whatever is just another
platform to do the same if you can replace the
bootstrap.  Modular IOS might even make it
easier to do dynamic code insertion.

There are platforms (Xbox?, Tivo?, etc.) that try
to do cryptographic validation of the code they
are loading.  Network devices are not yet doing
a true cryptograhic validation as far as I know,
although one could imagine that that might be a
next step to protect against that specific threat
(although I seem to recall that bypassing the Xbox
validations only took a few months, so it is harder
than it first appears to get right).

Gary

___
NANOG mailing list
NANOG@nanog.org
http://mailman.nanog.org/mailman/listinfo/nanog


Re: [NANOG] US DoD receives chunked IPv6 /13 (14x /22 but not totallyconsecutive)

2008-05-16 Thread Buhrmaster, Gary

 The other fun question is of course what a single 
 organization has to do with (2^(48-13)=) 34.359.738.368,
 yes indeed, 34 billion /48's which cover 2.251.799.813.685.248 /64's
 which is a number that I can't even pronounce. 

Perhaps the DARPA initiative regarding having each mine have
its own network address (so it can communicate and hop around)
is closer than we think.
http://www.theregister.co.uk/2003/04/11/the_selfhealing_selfhopping_landmine/

(The animation content has moved to: 
http://www.darpa.mil/sto/smallunitops/shm/index.htm#)

Perhaps next each round of ammo will have its own IPv6 address.

___
NANOG mailing list
NANOG@nanog.org
http://mailman.nanog.org/mailman/listinfo/nanog