DragonFlyBSD Multimedia Resources List
Links on this page refer to multimedia resources (podcast, vodcast,
audio recordings, video recordings, photos) related to DragonFlyBSD or
of interest for DragonFlyBSD users.
This list is available as chronological
overview, as a tag cloud and
via the sources.
This list is also available as RSS feed
If you know any resources not listed here, or notice any dead links,
please send details to
Edwin Groothuis so that
it can be included or updated.
New York City *BSD User Group
Alfred Perlstein on Sendmail Hacks
(11 Mb) Source: New York City *BSD User Group
Added: 07 August 2006
Tags: nycbug, presentation, sendmail, alfred perlstein
Alfred will discuss the hacks used to turn Sendmail
into a high performance solution for delivering
millions of messages to OKCupid`s subscribers.
Topics covered will be system tuning and sendmail
hacks used in house to achieve massive throughput.
Alfred Perlstein is the CTO of OKcupid.com, the
largest free online dating site. He has been a
FreeBSD hacker for five years, he`s worked on NFS,
VFS, pthreads, networking and general system
maintenance during his tenure on both FreeBSD and
OS X kernels.
Amitai Schlair on pkgsrcCon.
Source: New York City *BSD User Group
Added: 04 May 2007
Tags: nycbug, presentation, pkgsrccon, netbsd, amitai schlair
MP3 version (21Mb)
The fourth annual pkgsrcCon is
April 27-29 in Barcelona. As might be expected when
brains congregate, pkgsrcCon traditionally results
in a flurry of activity toward new directions and
initiatives. Mere hours after returning to New
York, Amitai will give us a recap of the
proceedings, including his presentation,
"Packaging djbware."
Amitai Schlair
is a pkgsrc developer who has worked in such diverse
areas as Mac OS X platform support and packages of
software by Dan Bernstein. His full-time undergraduate
studies at Columbia are another contributing factor
to his impending insanity. He consults in software
and IT.
Building a High-Performance Computing Cluster Using FreeBSD
Source: New York City *BSD User Group
Added: 22 March 2008
Tags: nycbug, presentation, high performance computing, freebsd, brooks davis
MP3 version (9 Mb, 80 minutes)
Special NYC*BUG meeting with FreeBSD developer Brooks Davis
Since late 2000 we have developed and maintained a
general purpose technical and scientific computing
cluster running the FreeBSD operating system. In
that time we have grown from a cluster of 8 dual
Intel Pentium III systems to our current mix of 64
dual, quad-core Intel Xeon and 289 dual AMD Opteron
systems.
In this talk we reflect on the system architecture
as documented in our BSDCon 2003 paper "Building a
High-performance Computing Cluster Using FreeBSD"
and our changes since that time. After a brief
overview of the current cluster we revisit the
architectural decisions in that paper and reflect
on their long term success. We then discuss lessons
learned in the process. Finally, we conclude with
thoughts on future cluster expansion and designs.
Bio
Brooks Davis is an Engineering Specialist in the
High Performance Computing Section of the Computer
Systems Research Department at The Aerospace
Corporation. He has been a FreeBSD user since 1994,
a FreeBSD committer since 2001, and a core team
member since 2006. He earned a Bachelors Degree in
Computer Science from Harvey Mudd College in 1998.
His computing interests include high performance
computing, networking, security, mobility, and, of
course, finding ways to use FreeBSD in all these
areas. When not computing, he enjoys reading,
cooking, brewing and pounding on red-hot iron in
his garage blacksmith shop.
Configuration Management with Cfengine
Source: New York City *BSD User Group
Added: 03 July 2008
Tags: nycbug, presentation, configuration management, cfengine
MP3 version (6 Mb, 58 minutes)
Configuration Management with Cfengine
Cfengine is a policy-based configuration management
system. Its primary function is to provide automated
configuration and maintenance of computers, from a
policy specification.
The cfengine project was started in 1993 as a
reaction to the complexity and non-portability of
shell scripting for Unix configuration management,
and continues today. The aim was to absorb frequently
used coding paradigms into a declarative, domain-specific
language that would offer self-documenting
configuration.
about the speaker:
Steven Kreuzer has been working with Open Source
technologies since as long as he can remember,
starting out with a 486 salvaged from a dumpster
behind his neighborhood computer store. In his spare
time he enjoys doing things with technology that
have absolutely no redeeming social value.
Gene Cronk on Implementing IPv6
Source: New York City *BSD User Group
Added: 06 October 2007
Tags: nycbug, presentation, ipv6, gene cronk
MP3 version (14Mb, 60 minutes)
This talk will be on some of the basics of IPv6
including addressing, subnetting, and tools to test
connectivity. There will be a lab (network permitting),
and setups for an as of yet undisclosed flavor of
BSD as well as some of the well known daemons (Apache
2, SSHD) will be demonstrated. Setting up a BSD OS
as an IPv6 router and tunneling system will also
be covered.
Bio
Gene Cronk, CISSP-ISSAP, NSA-IAM is a freelance
network security consultant, specializing in *NIX
solutions. He has been working with computers for
well over 20 years, electronics for over 15, and
IPv6 specifically for 4 years. He has given talks
on IPv6 and a multitude of other topics at DefCon,
ShmooCon and other "underground" venues.
Gene is from Jacksonville, FL. When not involved
in matters concerning IPv6, he can be found gaming
(Anarchy Online), helping out with the Jacksonville Linux
User`s Group, being one of the benevolent
dictators of the Hacker Pimps
Security Think Tank, or fixing up his house.
Hardware Performance Monitoring Counters
Source: New York City *BSD User Group
Added: 16 November 2008
Tags: nycbug, presentation, george neville-neil, counters
MP3 version (4 Mb)
Many modern CPUs provide on chip counters for
performance events such as retiring instructions
and cache misses. The hwpmc driver and libraries
in FreeBSD give systems administrators and programmers
access to APIs which make it possible to measure
performance without modifying source code and with
minimal intrusion into application execution. This
talk will be a brief introduction to HWPMC, and how
to use it.
Bio: George Neville-Neil is the co-author with Kirk
McKusick of The Design and Implementation of the
FreeBSD Operating System. He works on networking
an operating systems for fun and profit.
Introduction to Puppet
Source: New York City *BSD User Group
Added: 19 January 2009
Tags: nycbug, presentation, puppet, larry ludwig
MP3 version (11 Mb)
What it is and how can it make system administration
less painful
About the speaker:
Larry Ludwig - Principal Consultant/Founder of
Empowering Media. Empowering Media is a consulting
firm and managed hosting provider. Larry Ludwig
has been in the industry for over 15 years as a
system administration and system programmer. He`s
had previous experience working for many Fortune
500 corporations and holds a BS in CS from Clemson
University. Larry, along with Eric E. Moore and
Brian Gupta are founding members of the NYC Puppet
usergroup.
Isaac `Ike` Levy on m0n0wall and PFSense
(9 Mb) Source: New York City *BSD User Group
Added: 09 September 2006
Tags: nycbug, presentation, monowall, pfsense, isaac levy
UNIX professionals are busy these days. Setting up
routers and firewalls are fundamental to any network,
but in environments where the focus is on various
applications, (servers, workstations, and the
software that runs on them), it`s difficult for a
business not to choose off-the-shelf SOHO routers
and networking gear. The web management gui`s are
understandable by everyone, (even techs without
UNIX knowledge), and the gear is cheap - this saves
time and money.
In the meantime, the features of your average Linksys
or Netgear router often leave MUCH to be desired,
(https auth management, for one simple example).
Enter m0n0wall and PFSense, 2 BSD based packaged
router/firewall solutions that are as solid and
full featured as you`d expect from any BSD system-
PLUS THEY HAVE HTML WEB INTERFACES FOR MANAGEMENT!
m0n0wall and PFSense become an easy sell in any
small professional enviornment, any competent tech
can manage the network within minutes... At home,
in every hackers home network, they free the hacker
to have trusted tools available, but are as time-saving
as using any Linksys router.
m0n0wall and PFSense are both light and clean,
designed to run on embedded systems- (Soekris,
WRAP), but are monsters when unleashed on even
legacy PC`s around the office. If you manage UNIX
networks and systems all day, do you really want
to manage the router for your DSL when you get home?
But then doesn`t it bug you to use a chincey Linksys
box?
Ike has been a member of NYC*BUG since we first
launched in January 2004. He is a long-time member
of the Lower East Side Mac Unix User Group. He has
spoken frequently on a number of topics at various
venues, particularly on the issue of FreeBSD`s jail
(8).
Isaac `Ike` Levy on the Real Unix Tradition
Source: New York City *BSD User Group
Added: 08 July 2007
Tags: nycbug, presentation, unix tradition, isaac levy
MP3 version (10Mb)
"The Real Unix Tradition"
UNIX hackers, all standing on the shoulders of giants.
"...the number of UNIX installations has grown to
10, with more expected..." - Dennis Ritchie and Ken
Thompson, June 1972
"Well, it was all Open Source, before anybody really
called it that". - Brian Redman, 2003
UNIX is the oldest active and growing computing
culture alive today. From it`s humble roots in the
back room at Bell Laboratories, to today`s global
internet infrastructure- UNIX has consistently been
at the core of major advances in computing. Today,
the BSD legacy is the most direct continuation of
the most successful principles in UNIX, and continues
to lead major advances in computing.
Why? What`s so great about UNIX?
This lecture aims to prove that UNIX history is
surprisingly useful (and fun)- for developers,
sysadmins, and anyone working with BSD systems.
About the speaker
Isaac Levy, (ike) is a freelance BSD hadker based
in NYC. He runs Diversaform Inc. as an engine to
make his hacking feed itself, (and ike). Diversaform
specializes in *BSD based solutions, providing `IT
special weapons and tatics` for various sized
business clients, as well as running a small
high-availability datacenter operation from lower
Manhattan. With regard to FreeBSD jail(8), ike was
a partner in the first jail (8)-based web hosting
ISP in America, iMeme, and has been developing
internet applications in and out of jails since
1999. Isaac is a proud member of NYC*BUG (the New
York City *BSD Users Group), and a long time member
of LESMUUG, (the Lower East Side Mac Unix Users
Group).
Ivan Ivanov on The Version Control System Subversion
Source: New York City *BSD User Group
Added: 09 February 2007
Tags: nycbug, presentation, subversion, ivan ivanov
MP3 version
The presentation will discuss Subversion from both
client and server points of view. It will show how
to create repositories and how to make them accessible
over the network using different access schemes
like http://, file:// or svn://. Pointers are given
on securing the repositories and on authenticating
and authorizing the clients. Next, the presentation
shows how an user interacts with the repository and
describes some of the important Subversion client
commands. Finally, it deals with administrating
the repository using "hook scripts".
Ivan Ivanov is generally interested in Version
Control Systems since his student years in Sofia
University, Bulgaria, where he set up and maintained
a CVS server for an academic project. When Subversion
became a fact and proved to be "a better CVS" he
researched it and last year deployed it for his
NYC-based employer Ariel Partners
(http://www.arielpartners.com/). He intergrated the
Subversion repositories with Apache Web Server over
https to enable a reliable and secure way to access
them from any point.
Managing OpenBSD Environments
Source: New York City *BSD User Group
Added: 12 May 2008
Tags: nycbug, presentation, openbsd, system management
MP3 version (11 Mb, 103 minutes)
This talk is the result of an after-meeting discussion
with a few folks, when it became apparent that there
is some confusion as to how to deal with OpenBSD
in small and large environments. The topic of
installation and upgrading came up again. This talk
is aimed to hopefully dispel many of the rumors,
provide a thorough description and walk through of
the various stages of running OpenBSD in any size
environment, and some of the features and tools at
the administrator`s disposal.
Okan Demirmen has been working with UNIX-like systems
for as long as he can remember and has found OpenBSD
to match some of the same philosophies in which he
believes, namely simplicity and correctness, and
reap the benefits of such.
Marc Spitzer on Nagios
Source: New York City *BSD User Group
Added: 01 August 2007
Tags: nycbug, presentation, nagios, marc spitzer
MP3 version (19Mb)
Nagios is a platform for monitoring services and
the hosts they reside on. It provides a reasonable
tool for monitoring your network and you can not
beat the price.
We plan on covering the following topics:
- what it is
- how it works
- where to get it
- how to install it
- how to configure it
- how to customize it for your environment
- where the data is stored
- how to write a basic plug-in
About the Speaker
Marc Spitzer started as a VAX/VMS operator who
taught himself some basic scripting in DCL to help
me remember how to do procedures that did not come
up enough to actually remember all the steps, this
was in 1990. Since then he has worked with HPUX,
Solaris, Windows, Linux, and the BSDs, FreeBSD being
his favorite. He has held a variety of positions,
admin and engineering, where he has been able to
introduce BSD into his work place. He currently
works for Columbia University as a Systems
Administrator.
He is a founding member of NYCBUG and LispNYC and
on the board of UNIGroup.
Most of his career has been building tools to solve
operational problems, with extra effort going to
the ones that irritated him personally. He takes a
great deal of pride in not needing a budget to solve
most problems.
Matthew Burnside: Integrated Enterprise Security Mgmt
Source: New York City *BSD User Group
Added: 09 March 2007
Tags: mp3, presentation, enterprise security, matthew burnside
MP3 version
Integrated Enterprise Security Management
Security policies are a key component in protecting
enterprise networks. But, while there are many
diverse defensive options available, current models
and mechanisms for mechanically-enforced security
policies are limited to traditional admission-based
access control. Defensive capabilities include among
others logging, firewalls, honeypots, rollback/recovery,
and intrusion detection systems, while policy
enforcement is essentially limited to one-off access
control. Furthermore, access-control mechanisms
operate independently on each service, which can
(and often does) lead to inconsistent or incorrect
application of the intended system-wide policy. We
propose a new scheme for global security policies.
Every policy decision is made with near-global
knowledge, and re-evaluated as global knowledge
changes. Using a variety of actuators, we make the
full array of defensive capabilities available to
the global policy. Our goal is a coherent,
enterprise-wide response to any network threat.
Biography
Matthew Burnside is a Ph.D. student in the Computer
Science department at Columbia University, in New
York. He works for Professor Angelos Keromytis in
the Network Security Lab. He received his B.A and
M.Eng from MIT in 2000, and 2002, respectively. His
main research interests are in computer security,
trust management, and network anonymity.
New York City BSD Con 2006
Source: New York City *BSD User Group
Added: 01 November 2006
Tags: nycbug, nycbsdcon, nycbsdcon2006, presentation
Russell Sutherland: BSD on the Edge of the Enterprise. (12 Mb), Bob Beck: spamd - spam deferral daemon. (16 Mb), Bjorn Nelson: A Build System for FreeBSD (9 Mb), Jason Dixon: BSD Is Dying. (5 Mb), Kristaps Johnson: BSD Virtualisation with sysjail. (15 Mb), Bob Beck: PF, it is not just for firewalls anymore. (15 Mb), Jason Wright: OpenBSD on sparc64. (9 Mb), Brian A. Seklecki: A Framework for NetBSD Network Appliances. (10 Mb), Johnny C. Lam: The "hidden dependency" problem. (13 Mb), Corey Benninger: Security with Ruby on Rails in BSD (14 Mb), Wietse Venema: Postfix as a Secure Programming Example. (16 Mb), Marco Peereboom: Bio & Sensors in OpenBSD. (11 Mb)
Audio recordings of presentations given at New York
City BSD Conference 2006. Courtesy of nikolai at
fetissov.org. The main page also has links to the
slides.
New York City BSD Con 2006: BSD is Dying - A Cautionary Tale of Sex and Greed
Source: New York City *BSD User Group
Added: 02 November 2006
Tags: nycbug, presentation, humor, bsd is dying, jason dixon
MP4 (31Mb), QuickTime (19Mb), iPod (36Mb)
BSD is Dying
A Cautionary Tale of Sex and Greed
Jason Dixon
October 28, 2006
First and foremost, I would like to thank the unique
presentation styles of Dick Hardt and Lawrence
Lessig for inspiring me to create this presentation.
The following videos were created by exporting the
original Keynote presentation slides into QuickTime
video, then manually synchronizing them using iMovie
HD with the audio recordings captured by Nikolai
Fetissov. They were then exported into QuickTime,
mpeg4 (H.264/AAC), and iPod movie formats. If you
are having difficulties with the MP4 copy, and are
unable to view QuickTime movies, please contact me
and I'll try to assist.
New York City BSD Con 2008
Source: New York City *BSD User Group
Added: 24 November 2008
Tags: nycbsdcon2008, nycbsdcon, presentation
Julio M. Merino Vidal: An introduction to the Automated Testing Framework (ATF) for NetBSD. (570 Kb, 18 pages), Mike Silbersack: Detecting TCP regressions with tcpdiff. (88 Kb, 28 pages), Metthew Dillon: The HAMMER File System. (820 Kb, 16 pages), Kurt Miller: OpenBSD's Position Independent Executables (PIE) Implementation. (21 pages), Adrian Chadd: High-throughput concurrent disk IO in FreeBSD. (197 Kb, 92 pages), Anders Magnusson: Design and Implementation of the Portable C Compiler. (123 Kb, 29 pages), Jason L Wright: When Hardware Is Wrong, or "They can Fix It In Software". (1.7 Mb, 22 pages)
Slides of presentations given at New York City BSD
Conference 2008.
New York City BSD Con 2008
Source: New York City *BSD User Group
Added: 13 October 2008
Tags: nycbsdcon2008, nycbsdcon, presentation
Jeremy C. Reed: Introduction to DNSSEC. (15 Mb), Michael Lucas: Network Refactoring, or doing an oil change at 80 MPH. (10 Mb), Anders Magnusson: Design and Implementation of the Portable C Compiler. (15 Mb), Jason Dixon: BSD versus GPL. (4 Mb), Kurt Miller: OpenBSD's Position Independent Executables (PIE) Implementation. (10 Mb), Metthew Dillon: The HAMMER File System. (14 Mb), Pawel Jakub Dawidek: A closer look at the ZFS file system. (16 Mb), Jason L Wright: When Hardware Is Wrong, or "They can Fix It In Software". (9 Mb), Michael Shalayeff: Porting PCC. (11 Mb), Adrian Chadd: High-throughput concurrent disk IO in FreeBSD. (14 Mb), Mike Silbersack: Detecting TCP regressions with tcpdiff. (11 Mb), Julio M. Merino Vidal: An introduction to the Automated Testing Framework (ATF) for NetBSD. (10 Mb)
Audio recordings of presentations given at New York
City BSD Conference 2008. Courtesy of nikolai at
fetissov.org. The main page also has links to the
slides.
New York City BSD Con 2008: BSD v. GPL - a.k.a. not the sequel to "BSD is Dying"
Source: New York City *BSD User Group
Added: 14 October 2008
Tags: nycbsdcon, nycbsdcon2008, presentation, humor, bsd versus gpl, jason dixon
MP4 (15 Mb)
BSD vs GPL is a sweeping epic, focused on the
dichotomy between good and evil. It peers inside
the hearts and minds of the creators of these
movements and dissects their battle for world
domination. No common documentary will dare to
follow the path that BSD vs GPL blazes.
Okan Demirmen on PF
Source: New York City *BSD User Group
Added: 07 January 2007
Tags: nycbug, presentation, openbsd, pf, okan demirmen
MP3 version
We have had lots of meetings that have peripherally
discussed OpenBSD`s wildly popular PF firewall...
but finally we will have a meeting focused on it.
Open Meeting on OpenSSH
Source: New York City *BSD User Group
Added: 19 February 2008
Tags: nycbug, presentation, openssh
MP3 version (7 Mb, 63 minutes)
Open Meeting on OpenSSH
Febrary's NYCBUG meeting is a broad look at OpenSSH,
the de facto method for remote administration and
more. OpenSSH celebrated its 8th anniversary this
past September, and we thought this would be a great
opportunity to discuss OpenSSH, and for others to
contribute their hacks and interesting applications.
Postfix Performance Tuning
Source: New York City *BSD User Group
Added: 21 February 2009
Tags: nycbug, presentation, postfix, john mashey
MP3 version (11 Mb)
Money can buy you bandwidth, but latency is forever!
John Mashey, MIPS
Victor will cover an array of issues connected to
Postfix performance tuning, including:
- Latency, concurrency and throughput
- Postfix input processing
- Queue file format rationale
- Input processing bottlenecks
- Pre-queue filters, milters, content filters
- Tuning for fast (enough) input
- Postfix on-disk queues, requirements and architecture
- What is a "transport"?
- Postfix "nqmgr" scheduler algorithm
- Per-destination in memory queues
- Per-destination scheduler controls
- SMTP delivery
- Understanding delay logging
- Transport process limits, concurrency limits
- Scaling to thousands of output processes
- Connection caching, TLS session caching, feedback controls
Speaker Bio
Victor Duchovni trained in mathematics, switched
tracks to CS in 1980s leaving Princeton with a
master`s degree in mathematics and newly acquired
skills in Unix system administration and system
programming. In 1990 moved to Lehman Brothers,
worked on system management tooling, and network
engineering. Ported "Moira" from MIT to Lehman,
built efficient build systems that predated (and
partly inspired) Jumpstart. In 1994 joined ESM to
market "CMDB" tools to enterprise users, but this
did not pan out, in the mean time learned Tcl, and
contributed bunch of patches to the 7.x early 8.x
TCL releases. In 1997 returned to New York, working
in IT Security at Morgan Stanley since late 1999.
At Morgan Stanley, developed a hobby in perimeter
email security, becoming an active Postfix user and
very soon contributor in May of 2001. In addition
to many smaller feature improvements, contributed
initial implementation of SMTP connection caching,
overhauled and currently maintain LDAP and TLS
support. Made significant design contributions to
queue manager in collaboration with Wietse and
Patrik Raq. In 2.6 contributing support for TLS EC
ciphers and multi-instance management tooling,
ideally also TLS SNI if time permits.
Public Key sudo
Source: New York City *BSD User Group
Added: 19 August 2008
Tags: nycbug, presentation, sudo, public key, matthew burnside
MP3 version (2 Mb)
Two tools which have become the norm in Linux- and
Unix-based environments are SSH for secure
communications, and sudo for performing administrative
tasks. These are independent programs with substantially
different purposes, but they are often used in
conjunction. In this talk, I describe a flaw in
their interaction, and then present our solution
called public-key sudo.
Public-key sudo is an extension to the sudo
authentication mechanism which allows for public
key authentication using the SSH public key framework.
I describe our implementation of a generic SSH
authentication module and the sudo modifications
required to use this module.
Bio:
Matthew Burnside is a Ph.D. student in the Computer
Science department at Columbia University, in New
York. He works for Professor Angelos Keromytis in
the Network Security Lab. He received his B.A and
M.Eng from MIT in 2000, and 2002, respectively. His
research interests are in network anonymity, trust
management, and enterprise-scale policy enforcement.
Ray Lai: on OpenCVS
Source: New York City *BSD User Group
Added: 06 April 2007
Tags: nycbug, presentation, cvs, openbsd, ray lai
MP3 version
This presentation was inspired by the recent
Subversion presentation. It will talk about the
origins of OpenRCS and OpenCVS, its real-world usage
in the OpenBSD project, and why OpenBSD will continue
to use CVS.
Ray is an OpenBSD developer who uses Subversion by
day, CVS by night. Taking the phrase "complexity
is the enemy of security" to heart, he believes
that the beauty of UNIX`s security is in its
simplicity.
SSARES
Source: New York City *BSD User Group
Added: 11 January 2008
Tags: nycbug, presentation, ipv6, gene cronk
Paper (443 Kb, 10 pages), MP3 version (7 Mb, 67 minutes)
SSARES: Secure Searchable Automated Remote Email
Storage - A usable, secure email system on a remote
untrusted server
The increasing centralization of networked services
places user data at considerable risk. For example,
many users store email on remote servers rather
than on their local disk. Doing so allows users to
gain the benefit of regular backups and remote
access, but it also places a great deal of unwarranted
trust in the server. Since most email is stored in
plaintext, a compromise of the server implies the
loss of confidentiality and integrity of the email
stored therein. Although users could employ an
end-to-end encryption scheme (e.g., PGP), such
measures are not widely adopted, require action on
the sender side, only provide partial protection
(the email headers remain in the clear), and prevent
the users from performing some common operations,
such as server-side search.
To address this problem, we present Secure Searchable
Automated Remote Email Storage (SSARES), a novel
system that offers a practical approach to both
securing remotely stored email and allowing
privacy-preserving search of that email collection.
Our solution encrypts email (the headers, body, and
attachments) as it arrives on the server using
public-key encryption. SSARES uses a combination
of Identity Based Encryption and Bloom Filters to
create a searchable index. This index reveals little
information about search keywords and queries, even
against adversaries that compromise the server.
SSARES remains largely transparent to both the
sender and recipient. However, the system also
incurs significant costs, primarily in terms of
expanded storage requirements. We view our work as
a starting point toward creating privacy-friendly
hosted services.
Angelos Keromytis is an Associate Professor with
the Department of Computer Science at Columbia
University, and director of the Network Security
Laboratory. He received his B.Sc. in Computer Science
from the University of Crete, Greece, and his M.Sc.
and Ph.D. from the Computer and Information Science
(CIS) Department, University of Pennsylvania. He
is the author and co-author of more than 100 papers
on refereed conferences and journals, and has served
on over 40 conference program committees. He is an
associate editor of the ACM Transactions on Information
and Systems Security (TISSEC). He recently co-authored
a book on using graphics cards for security, and
is a co-founder of StackSafe Inc. His current
research interests revolve around systems and network
security, and cryptography.
Steven Kreuzer on Denial of Service Mitigation Techniques
Source: New York City *BSD User Group
Added: 08 June 2007
Tags: nycbug, presentation, denialofservice, steven kreuzer
MP3 version (10Mb)
Protecting your servers, workstations and networks
can only go so far. Attacks which consume your
available Internet-facing bandwidth, or overpower
your CPU, can still take you offline. His presentation
will discuss techniques for mitigating the effects
of such attacks on servers designed to provide
network intensive services such as HTTP or routing.
About the speaker
Steven Kreuzer is currently employed by Right Media
as a Systems Administrator focusing on building and
managing high transaction infrastructures around
the globe. He has been working with Open Source
technologies since as long as he can remember,
starting out with a 486 salvaged from a dumpster
behind his neighborhood computer store. In his spare
time he enjoys doing things with technology that
have absolutely no redeeming social value.
User Interfaces and How People Think
Source: New York City *BSD User Group
Added: 10 March 2008
Tags: nycbug, presentation, user interfaces
Slides (2.7 Mb, 24 pages), MP3 version (9 Mb, 78 minutes)
"User Interfaces and How People Think" will introduce
concepts of designing software for different users
by observing how they think about and do what they
do. While much of design today focuses on the
front-end of computer systems, there is opportunity
to innovate in every area where a human interacts
with software.
Bio:
Jeffery Mau is a user experience designer with the
leading business and technology consulting firm
Sapient. He has helped clients create great customer
experiences in the financial services, education,
entertainment and telecommunications industries.
With a passion for connecting people with technology,
Jeff specializes in Information Architecture and
Business Strategy. Jeff holds a Masters in Design
from the IIT Institute of Design in Chicago, Illinois.
Using Cryptography to Improve Web Application Performance and Security
Source: New York City *BSD User Group
Added: 12 September 2007
Tags: nycbug, presentation, cryptography, nick galbreath
MP3 version (18Mb)
Cryptography has a reputation of slowing down
applications. However if done correctly, it can
actually be used to improve performance by storing
high-value/high-cost results "in public." In addition
the same techniques can solve common security
problems such as authorization, parameter scanning,
and parameter rewriting.
All are welcome - no previous experience with
cryptography is required, and the techniques will
be presented in a programming-language neutral
format.
Nick Galbreath have been working on high performance
servers and web security at various high profile
startups since 1994 (most recently Right Media).
He holds a Master degree of Mathematics from Boston
University, and published a book on cryptography.
He currently lives in the Lower East Side.
What's your biggest Time Management problem?
Source: New York City *BSD User Group
Added: 13 March 2009
Tags: nycbug, presentation, time management, tom limoncelli
MP3 version (11 Mb)
What's your biggest Time Management problem?
Tom Limoncelli is a FreeBSD user and the author of
the O'Reilly book,"Time Management for System
Administrators". He`ll be giving a brief presentation
with highlights from his book then will take questions
from the audience. Whether you are a system
administrator, a developer (or even a Linux user)
this presentation will help you with something more
precious a quad-processor AMD box.
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