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Topic: Vern Paxson


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In the News (Mon 13 Oct 08)

  
  DBLP: Vern Paxson
Vern Paxson: An analysis of the witty outbreak: exploiting underlying structure for detailed reconstruction of an internet-scale event.
Vern Paxson, Sally Floyd: Wide area traffic: the failure of Poisson modeling.
Vern Paxson: Empirically derived analytic models of wide-area TCP connections.
www.informatik.uni-trier.de /~ley/db/indices/a-tree/p/Paxson:Vern.html   (940 words)

  
  Vern Paxson, Papers
Paxson, and Brian Tierney, The NIDS Cluster: Scalable, Stateful Network Intrusion Detection on Commodity Hardware, Proc.
Paxson, R. Sommer, and N. Weaver, An Architecture for Exploiting Multi-Core Processors to Parallelize Network Intrusion Prevention, Proc.
Dharmapurikar and V. Paxson, Robust TCP Stream Reassembly in the Presence of Adversaries, Proc.
www.icir.org /vern/papers.html   (2027 words)

  
  The purpose of this paper is to provide a summary of the article "End-to-End Routing Behavior in The Internet" by Vern ...
Paxson presents measured data on Internet routing loops, errors, oscillations, and outages to support his finding that the probability of encountering a major routing pathology more than doubled from the end of 1994 to the end of 1995.
Paxson relies on statistical analysis of his measurement data to support his findings and provides discussion as to their meanings.
Paxson states that most of the previous routing related research was focused on the design and function of routing algorithms and protocols.
www.pcs.cnu.edu /~tcoates/Report.htm   (2241 words)

  
 Vern Paxson | EECS at UC Berkeley
Jung, J., Paxson, V., Berger, A. W., and Balakrishnan, H. Fast portscan detection using sequential hypothesis testing," in Proc.
Handley, M., Paxson, V., and Kreibich, C. Network intrusion detection: Evasion, traffic normalization, and end-to-end protocol semantics," in Proc.
Paxson, V. Bro: A system for detecting network intruders in real-time," Computer Networks, 31 (23-24), 2435-2463, 1999.
www.eecs.berkeley.edu /Faculty/Homepages/paxson.html   (157 words)

  
 [No title]   (Site not responding. Last check: )
Vern noted that the granularity across which we share CC information is a difficult problem and the IRTF is being encouraged to examine the problem.
Vern noted that we are doing what we understand, and encouraging the IRTF to investigate what we do not.
Vern noted that this is a hard problems and we do not yet have a good answer, but also that because CM needs to only be deployed on one endpoint in order to work, it has a relatively easy deployment and upgrade path.
sunsite.utk.edu /ftp/usr-218-2/ietf/ecm/ecm-minutes-99nov.txt   (615 words)

  
 In "End-to-End Routing Behavior in the Internet", Vern Paxson describes the methodology and analysis of 40,000 ...
In "End-to-End Routing Behavior in the Internet", Vern Paxson describes the methodology and analysis of 40,000 "traceroute" measurements made between 37 Internet sites during the autumns of 1994 and 1995.
In Paxson's view this study was the first to focus on the "the end-to-end dynamics of routing information".
At the time of the study there were more than 50,000 hosts, but Paxson argues that they "reflect a significant cross-section of the behavior".
www.pcs.cnu.edu /~rmyer/cpsc502/summary.html   (1132 words)

  
 [No title]
Vern Paxson of LBL presented his view of why meaningful Internet measurement is painfully hard, starting with a list of several as yet unanswered questions that require Internet measurement:
Paxson of LBL presented his work on fl-box measurement of Internet clouds, using endpoint measurements to discern how an Internet cloud perturbs traffic going through it.
Vern notes that npd was just a prototype he wrote for his thesis research, although he agreed that obtaining a reasonable picture of performance would be greatly facilitated with some measurement infrastructure, including deployment of performance evaluation tools, techniques for independent measuring and analyzing of of available congestion levels, queueing delays, packet loss, etc.
www.caida.org /workshops/isma/9602/report   (9119 words)

  
 LBL Network Research Group Papers
Paxson, V., Automated Packet Trace Analysis of TCP Implementations, ACM SIGCOMM '97, September 1997, Cannes, France.
Paxson, V., Empirically-Derived Analytic Models of Wide-Area TCP Connections.
Paxson, V., Growth Trends in Wide-Area TCP Connections.
www-nrg.ee.lbl.gov /nrg-papers.html   (1095 words)

  
 Network Security
For its development, Paxson was recognized with the best paper award at the recent Usenix Security Symposium in San Antonio, Texas.
The award further validates the importance of Paxson's contribution to the cutting-edge field of network security.
Because of the sensitive nature of Internet security and the desire of security system providers to protect their products, Paxson said there is little public information available on this subject.
www.lbl.gov /Science-Articles/Archive/vpaxson-netscurity.html   (484 words)

  
 [No title]   (Site not responding. Last check: )
The BOF was co-chaired by Steve Alexander (sca@sgi.com) from Silicon Graphics and Vern Paxson (vern@ee.lbl.gov) of Lawrence Berkeley Labs.
The idea (originally suggested by Jamshid Mahdavi and Matt Mathis) is to help TCP implementors improve the quality of their products by making them aware of problems in existing implementations and any tools or test suites that might make the development process more productive.
Vern Paxson then gave a presentation on the results of several research studies, which included work by Brakmo and Peterson; Comer and Lin; Stevens; Dawson, Jahanian, and Milton; and Paxson.
sunsite.utk.edu /ftp/pub/ietf/96dec/tcpimp-minutes-96dec.txt   (903 words)

  
 Worm Attack Could Rack Up $50 Billion In U.S. Damages - Technology News by InformationWeek
Nicholas Weaver and Vern Paxson, security researchers who work with the International Computer Science Institute (ICSI), a nonprofit research group associated with the University of California at Berkeley, modeled a worst-case scenario in which state-sponsored attackers construct a worm exploiting an unpublished vulnerability, then launch it over the Internet.
By comparison, Weaver and Paxson said, last summer's Blaster worm, which exploited a vulnerability that was known for almost a month before the worm appeared, infected a minimum of 8 million machines.
Weaver and Paxson investigated seven popular system and two motherboard manufacturers' wares, and found that, in a third of the cases, it's possible for a worm to cause enough damage that the motherboard would need to be replaced.
www.informationweek.com /story/showArticle.jhtml?articleID=21401700   (928 words)

  
 [Bro] new Bro CURRENT release 1.1
Vern -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ 1.1 Mon May 15 10:50:33 PDT 2006 - Bro now supports a "when" statement for taking action upon something becoming true asynchronously (Robin Sommer).
For the latter, you specify a UDP tunnel port using udp_tunnel_port (the previous variable "tunnel_port" has gone away); or you can leave it set to its default of 0/udp, in which case Bro will look for IP encapsulated in UDP packets on any port.
The boolean globals udp_content_deliver_all_{orig,resp} and tables udp_content_delivery_ports_{orig,resp} control for which ports content is delivered, analogous to the globals that control tcp_contents.
mailman.icsi.berkeley.edu /pipermail/bro/2006-May/002394.html   (4521 words)

  
 [No title]
Vern Paxson noted that the significance of loss period would depend on the rate at which the application was attempting to send packets.
Christian Huitema noted that the work was very specific to a particular kind of real-time application, and may not be suitable to standardize for an IETF effort, and asked how could this be generalized to archive information with more general usefulness.
Vern Paxson asked whether anything is known about what burst lengths are known to be problematic for specific applications.
www.ietf.org /ietf/ippm/ippm-minutes-97dec.txt   (2031 words)

  
 [No title]
Vern Paxson Vern Paxson Lawrence Berkeley Laboratory Computer Systems Engineering Bldg.
The first number is how many board positions the program examined when computing its previous response.
Sometimes the value produced will be 63 or 65 instead of 64 (but I've never observed any other values), so the result is then rounded to the nearest multiple of 4, and then the other constants are derived from it.
web.mit.edu /~mkgray/stuff/ftp/1992/vern.hint   (714 words)

  
 flex: a fast lexical analyzer generator: FAQ
Date: Tue, 22 Oct 1996 11:06:13 PDT From: Vern Paxson Unfortunately flex at the moment has a widespread assumption within it that characters are processed 8 bits at a time.
Date: Sun, 21 Dec 1997 21:30:46 PST From: Vern Paxson > /usr/lib/yaccpar: In function `int yyparse()': > /usr/lib/yaccpar:184: warning: implicit declaration of function `int yylex(...)' > > ld: Undefined symbol > _yylex > _yyparse > _yyin This is a known problem with Solaris C++ (and/or Solaris yacc).
Date: Tue, 27 Jan 1998 22:45:37 PST From: Vern Paxson > It seems useful for the parser to be able to tell the lexer about such > context dependencies, because then they don't have to be limited to > local or sequential context.
www.linux.ucla.edu /doc/flex-doc/flex_26.html   (7420 words)

  
 Study of routing behaviour through traceroute measurements
Paxson also found out that in 1995 (1994) 0.44% (0.16%) of the measurements saw a route change, whereas 2.7% (1.2%) of the measurements had route failures.
Paxson used quite a few nodes outside of the US; the result is that the average hop count is 15.9, with the 80th-percentile being in 20.0 hops.
Another difference is that Paxson used exponential sampling, whereas we have used a periodic sampling.
klamath.stanford.edu /tools/Traceroute/Routing_behaviour_through_traceroute_measurements.htm   (1783 words)

  
 The Works of John Frame and Vern Poythress
Peter A. Lillback, which is published in the Mentor imprint of Christian Focus Publications (www.christianfocus.com) and is used with their kind permission.
From their website: "We live in God's world, and today this world is continually experiencing the impact of science, scientific ideas, and technological fruits of science.
Foreword to The Art of Worship by Paxson Jeancake...
www.frame-poythress.org /blog/blog.html   (1909 words)

  
 Flex - a scanner generator - Author
Vern Paxson, with the help of many ideas and much inspiration from Van Jacobson.
The fast table representation is a partial implementation of a design done by Van Jacobson.
The implementation was done by Kevin Gong and Vern Paxson.
dinosaur.compilertools.net /flex/flex_25.html   (295 words)

  
 DBLP: Vern Paxson   (Site not responding. Last check: )
Vern Paxson, Michael Waidner: Guest Editor's Introduction: 2005 IEEE Symposium on Security and Privacy.
Vern Paxson, Sally Floyd: Wide area traffic: the failure of Poisson modeling.
Vern Paxson: Empirically derived analytic models of wide-area TCP connections.
www.acm.org /turing/sigmod/dblp/db/indices/a-tree/p/Paxson:Vern.html   (707 words)

  
 TWikiDocumentation
Vern From vern@icir.org Thu Sep 1 07:38:24 2005 From: vern@icir.org (Vern Paxson) Date: Wed, 31 Aug 2005 23:38:24 -0700 Subject: [Bro] Bro install problems on linux In-Reply-To: Your message of Tue, 30 Aug 2005 22:52:06 PDT.
Vern From vern@icir.org Wed Sep 7 06:26:15 2005 From: vern@icir.org (Vern Paxson) Date: Tue, 06 Sep 2005 22:26:15 -0700 Subject: [Bro] new Bro CURRENT release (0.9a10) In-Reply-To: Your message of Fri, 20 May 2005 00:16:14 PDT.
Vern From vern@icir.org Wed Sep 21 21:36:51 2005 From: vern@icir.org (Vern Paxson) Date: Wed, 21 Sep 2005 13:36:51 -0700 Subject: [Bro] new Bro CURRENT release (0.9a10) In-Reply-To: Your message of Tue, 13 Sep 2005 09:43:00 +0200.
mailman.icsi.berkeley.edu /pipermail/bro/2005-September.txt   (8130 words)

  
 IPPM Update   (Site not responding. Last check: )
Vern agrees that the WG needs to consider these issues going forward.
Vern notes that the group is looking at clouds that might consist of a wide number of different media types.
Vern says that this work will need the help of the ISPs to help define these metrics.
www.academ.com /nanog/oct1997/ippm.html   (246 words)

  
 :: CyLab
Speaker:                   Vern Paxson, International Computer Science Institute, Berkeley.
Vern Paxson is a senior scientist at the International Computer Science Institute (ICSI) in Berkeley, California, USA, as well as a staff scientist with the Lawrence Berkeley National Laboratory.
His main active research projects are network intrusion detection in the context of Bro, a high- performance network intrusion detection system he developed; large-scale network measurement and analysis; and Internet-scale attacks, particularly rapidly-propagating network "worms".
www.cylab.cmu.edu /default.aspx?id=2080   (325 words)

  
 All About ISOC: Conferences - INET
The NIMI architecture is patterned after Paxson's Network Probe Daemon (NPD), which was used to perform the first large-scale measurements of end-to-end Internet behavior [Pa97, Pa96b].
Mahdavi and V. Paxson, "Connectivity," work in progress, Nov. 1997.
Paxson, G. Almes, J. Mahdavi and M. Mathis, "Framework for IP Performance Metrics," work in progress, Feb. 1998.
www.isoc.org /inet98/proceedings/6g/6g_1.htm   (5169 words)

  
 Worst-Case Worm Could Rack Up $50 Billion In U.S. Damages - Technology News by TechWeb
Nicholas Weaver and Vern Paxson, two security researchers who work with the International Computer Science Institute (ICSI), a nonprofit research group associated with the University of California at Berkeley, modeled a worst-case scenario in which state-sponsored attackers construct a worm exploiting an unpublished vulnerability, then launch it over the Internet.
By comparison, Weaver and Paxson said, last summer's MSBlast worm, which exploited a vulnerability that was known for almost a month before the worm appeared, infected a minimum of 8 million machines.
Worms would be the weapon of choice for such an attack, the researchers said, because they can spread very quickly, as evidenced by the Slammer worm of 2003, which managed to infect tens of thousands of systems worldwide in less than ten minutes.
www.techweb.com /wire/story/TWB20040604S0006   (1039 words)

  
 Nicholas Weaver Curriculum Vitae
Nicholas Weaver, Ihab Hamadeh, George Kesidis, and Vern Paxson, "Preliminary Results Using Scale-Down to Explore Worm Dynamics", 2nd ACM Workshop on Rapid Malcode.
David Moore, Vern Paxson, Stefan Savage, Colleen Shannon, Stuart Staniford, and Nicholas Weaver, "The Spread of the Sapphire/Slammmer Worm",
Nicholas Weaver, Vern Paxson, Stuart Staniford, and Robert Cunningham.
www.icsi.berkeley.edu /~nweaver/cv.html   (729 words)

  
 [No title]
From vern@icir.org Fri Feb 7 06:34:03 2003 From: vern@icir.org (Vern Paxson) Date: Thu, 06 Feb 2003 22:34:03 -0800 Subject: [IETF-IDRM] IDRM research group closed Message-ID:
The research group chairs and I have concluded that there isn't a sufficient nucleus of like-minded participants to continue the IDRM effort within the IRTF.
Vern et al: The discontinuation of the group is regrettable but logical.
www.pairlist.net /pipermail/ietf-idrm/2003-February.txt   (2277 words)

  
 Finding Ways to Fill Electronic Potholes
While ideally the Internet delivers data quickly and intact, packets of data get lost, delayed, replicated and reordered, a situation which proved to be fertile ground for Vern Paxson's doctorate study.
Paxson, a member of the Network Research Group in the Information and Computing Sciences Division, recently earned his Ph.D. in Computer Science at UC Berkeley with a dissertation on development of a measurement framework for the Internet.
Paxson said his research has implications for many facets of Internet use, including distributed collaborations, and could help in the development of new tools for improved data transfer.
www.lbl.gov /Computing-Sciences/Archive/superhighway.html   (230 words)

  
 ICSI | News: Vern Paxson of ICIR Receives Grant from NSF   (Site not responding. Last check: )
Vern Paxson of ICIR Receives Grant from NSF
Vern Paxson of ICIR received a grant from NSF for "Viable Network Defense for Scientific Research Institutions." This project tackles the problem of how to defend a site from Internet attacks when the site requires broad, open access to the Internet to perform its mission.
The goal is to enhance Bro's capabilities and applicability to operational use, to foster a Bro user community that will facilitate the use of Bro at research institutions, and to develop new network-based intrusion detection algorithms.
www.icsi.berkeley.edu /news/2003/nb0302.html   (121 words)

  
 Vern Paxson, ACIRI/LBNL   (Site not responding. Last check: )
Vern Paxson received his Ph.D. from the University of California at Berkeley.
He is a senior scientist with the ATandT Center for Internet Research at the International Computer Science Institute in Berkeley, CA, and a staff scientist at the Lawrence Berkeley National Laboratory.
He serves on the editorial board of IEEE/ACM Transactions on Networking, and has been active in the IETF, chairing working groups on performance metrics, TCP implementation, and endpoint congestion management, as well as serving on the Internet Engineering Steering Group as a director for the Transport area.
www.raid-symposium.org /raid2000/Materials/Panels/102/Vern_Paxson.html   (100 words)

  
 Active Mapping: Resisting NIDS Evasion without Altering Traffic   (Site not responding. Last check: )
Vern Paxson, ICSI Center for Internet Research and Lawrence Berkeley National Laboratory
A critical problem faced by a Network Intrusion Detection System (NIDS) is that of ambiguity.TheNIDS cannot always determine what traffic reaches a given host nor how that host will interpret the traffic, and attackers may exploit this ambiguity to avoid detection or cause misleading alarms.
Citation:  Umesh Shankar, Vern Paxson, "Active Mapping: Resisting NIDS Evasion without Altering Traffic," sp, p.
csdl2.computer.org /persagen/DLAbsToc.jsp?resourcePath=/dl/proceedings/&toc=comp/proceedings/sp/2003/1940/00/1940toc.xml&DOI=10.1109/SECPRI.2003.1199327   (257 words)

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