It was fun doing this last year. So I thought I would have another go at it and see what I come up with.
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After seeing some of the great examples of coders working on practiced problems on KataCasts, I decided to try make my own. I am not happy with the pacing of the video. I’m about a minute too early relative to the music. But I thought I’d post the video here, to see what you all think. Comments are welcome! I hope the video will demonstrate how to use refactoring effectively to drive the design of a program.
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For all network deployments, there is a requirement to present information relating to both topology, and various utilisation statistics to some human operator. In many cases, this process has become so ingrained in network requirements that there are almost ubiquitous solutions to the visualising data - for example, link utilisation is almost always presented via some framework or tool powered by RRDTool . Other tools, such as network "we..
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For all network deployments, there is a requirement to present information relating to both topology, and various utilisation statistics to some human operator. In many cases, this process has become so ingrained in network requirements that there are almost ubiquitous solutions to the visualising data - for example, link utilisation is almost always presented via some framework or tool powered by RRDTool . Other tools, such as network "we..
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Some time ago I wrote a post about how COUNT(*) and COUNT(column) are semantically different things ( link ). Such queries may return different results if the column counted has NULLs in it. And the difference comes from that NULL is not a value, it’s rather a state which says “value unknown” or “no value entered”. So, you better understand how NULLs interact with your SQL constructs if you call yourself a DBA or a database developer ;-)
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Some time ago I wrote a post about how COUNT(*) and COUNT(column) are semantically different things ( link ). Such queries may return different results if the column counted has NULLs in it. And the difference comes from that NULL is not a value, it’s rather a state which says “value unknown” or “no value entered”. So, you better understand how NULLs interact with your SQL constructs if you call yourself a DBA or a database developer ;-)
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DEF CON 9 was held July 13th - 15th, 2001, in Las Vegas, Nevada USA. Past speeches and talks from DEF CON hacking conferences in an iTunes friendly m4b format. The DEFCON series of hacking conferences were started in 1993 to focus on both the technical and social trends in hacking, and has grown to be world known event. If you did not make it, or missed the speaker you wanted to see here is you chance to download and watch the presentation..
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DEF CON 9 was held July 13th - 15th, 2001, in Las Vegas, Nevada USA. Past speeches and talks from DEF CON hacking conferences in an iTunes friendly m4b format. The DEFCON series of hacking conferences were started in 1993 to focus on both the technical and social trends in hacking, and has grown to be world known event. If you did not make it, or missed the speaker you wanted to see here is you chance to download and watch the presentations..
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Stephen Hsu - SafeWeb's Triangle Boy: IP spoofing and strong encryption in service of a free Internet
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defcon.org
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16 years ago
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eng
SafeWeb is an encrypted (SSL) anonymous proxy service, used approximately 100 million times per month by hundreds of thousands of people worldwide. Triangle Boy is an Open Source program that lets volunteers turn their PCs into entry points into the SafeWeb network, thereby foiling censorship in countries like China and Iran. Triangle Boy uses IP spoofing and innovative packet routing to minimize the load on volunteer machines. I discuss Sa....
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Stephen Hsu - SafeWeb's Triangle Boy: IP spoofing and strong encryption in service of a free Internet
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defcon.org
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16 years ago
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eng
SafeWeb is an encrypted (SSL) anonymous proxy service, used approximately 100 million times per month by hundreds of thousands of people worldwide. Triangle Boy is an Open Source program that lets volunteers turn their PCs into entry points into the SafeWeb network, thereby foiling censorship in countries like China and Iran. Triangle Boy uses IP spoofing and innovative packet routing to minimize the load on volunteer machines. I discuss Sa....
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HavenCo provides secure colocation in the Principality of Sealand, in the North Sea, to a wide range of clients. We've gotten a lot of press in the past year, still, we get a lot of questions: # Why do people go offshore in the first place? # What can they gain? # Aren't they all just software pirates and pornographers? # Can existing companies restructure offshore after they get sued? # What is life like on Sealand....
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HavenCo provides secure colocation in the Principality of Sealand, in the North Sea, to a wide range of clients. We've gotten a lot of press in the past year, still, we get a lot of questions: # Why do people go offshore in the first place? # What can they gain? # Aren't they all just software pirates and pornographers? # Can existing companies restructure offshore after they get sued? # What is life like on Sealand....
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This is part two of a multi-part introduction to termios and terminal emulation on UNIX. Read part 1 if you’re new here) In this entry, we’ll look at the interfaces that are used to control the behavior of the “termios” box sitting between the master and slave pty. The behaviors I described last time are fine if you have a completely dumb program talking to the terminal, but if the program over on the right is using curses (like emacs or vi..
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This is part two of a multi-part introduction to termios and terminal emulation on UNIX. Read part 1 if you’re new here) In this entry, we’ll look at the interfaces that are used to control the behavior of the “termios” box sitting between the master and slave pty. The behaviors I described last time are fine if you have a completely dumb program talking to the terminal, but if the program over on the right is using curses (like emacs or vi..
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Lile Elam - Renagade wireless networks, Creating Connectivity on Demand
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defcon.org
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16 years ago
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eng
A panel of wireless hackers will describe how adhoc open wireless networks have been successfully set up for various events and places. From small/large happenings to local neighborhood access, learn how to create open wireless networks for all to use. After all, what is hacking without connectivity! Lile Elam, a hacker artist residing in Silicon Valley, has managed various un*x based systems and networks since the late 80's. Founde..
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Lile Elam - Renagade wireless networks, Creating Connectivity on Demand
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defcon.org
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16 years ago
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eng
A panel of wireless hackers will describe how adhoc open wireless networks have been successfully set up for various events and places. From small/large happenings to local neighborhood access, learn how to create open wireless networks for all to use. After all, what is hacking without connectivity! Lile Elam, a hacker artist residing in Silicon Valley, has managed various un*x based systems and networks since the late 80's. Founder..
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John L. Dodge & Bernadette H. Schell - Laurentian University Hacker Study Update
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defcon.org
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16 years ago
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eng
Laurentian University's Hacker Research Team from Sudbury Ontario Canada interviewed and surveyed self-professed hackers at Def Con 8 in Las Vegas and H2K in New York City in July 2000. The objective of the study was an attempt to give a balanced view on hackers - including the "white hats" and the "back hats". Its intent was to collect information that would give a realistic picture of the way hackers think, feel, and behave rather than so....
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John L. Dodge & Bernadette H. Schell - Laurentian University Hacker Study Update
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defcon.org
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16 years ago
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eng
Laurentian University's Hacker Research Team from Sudbury Ontario Canada interviewed and surveyed self-professed hackers at Def Con 8 in Las Vegas and H2K in New York City in July 2000. The objective of the study was an attempt to give a balanced view on hackers - including the "white hats" and the "back hats". Its intent was to collect information that would give a realistic picture of the way hackers think, feel, and behave rather than so....
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Windows NT (WNT) and Windows 2000 (W2K) have powerful graphical user interfaces that make the job of assessing the security condition of and securing these operating systems considerably easier. Changing the bad logon limit is, for example, relatively easy to both understand and do in both of these Windows operating systems. Providing adequate security does not, however, always involve working with mainstream features of applications, ope....
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Windows NT (WNT) and Windows 2000 (W2K) have powerful graphical user interfaces that make the job of assessing the security condition of and securing these operating systems considerably easier. Changing the bad logon limit is, for example, relatively easy to both understand and do in both of these Windows operating systems. Providing adequate security does not, however, always involve working with mainstream features of applications, ope....
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Security aspects of electronic books and documents, and a demonstration of how weak they are: # "standard" PDF encryption, # Rot13 (used by New Paradigm Resources Group, Inc.), # FileOpen (by FileOpen Systems), # SoftLock (by SoftLock Services, Inc.), # Adobe's Web Buy, # Adobe's eBook Reader (GlassBook Reader) # InterTrust DocBox plug-in. Documents publishing in electronic form have a lot of advantages agai....
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Security aspects of electronic books and documents, and a demonstration of how weak they are: # "standard" PDF encryption, # Rot13 (used by New Paradigm Resources Group, Inc.), # FileOpen (by FileOpen Systems), # SoftLock (by SoftLock Services, Inc.), # Adobe's Web Buy, # Adobe's eBook Reader (GlassBook Reader) # InterTrust DocBox plug-in. Documents publishing in electronic form have a lot of advantages against trad....
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Increasing democratization of the network means more and more users are finding interesting things to do with the resources at their disposal. In the wake of watershed decentralized applications such as Napster, many commercial and open source efforts are producing so-called "peer-to-peer" (P2P) or decentralized applications and computing frameworks. The genesis of P2P, decentralization, and distributed computing as a fundamental architectu....
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Increasing democratization of the network means more and more users are finding interesting things to do with the resources at their disposal. In the wake of watershed decentralized applications such as Napster, many commercial and open source efforts are producing so-called "peer-to-peer" (P2P) or decentralized applications and computing frameworks. The genesis of P2P, decentralization, and distributed computing as a fundamental architectu....
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Adam and I have been doing research on wireless security from a practical perspective. Basically discovering what's wrong with the current security models in 802.11 networking and how they can be fixed or worked around. Adam has developed a system called the Captive Portal that will allow wireless networks to be setup that are resilent to problems with link-level authentication and encryption schemes. The system is still in development, ....
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Adam and I have been doing research on wireless security from a practical perspective. Basically discovering what's wrong with the current security models in 802.11 networking and how they can be fixed or worked around. Adam has developed a system called the Captive Portal that will allow wireless networks to be setup that are resilent to problems with link-level authentication and encryption schemes. The system is still in development, b....
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Closing Ceremony and Awards. Hosted by The Dark Tangent. DEF CON 9 was held July 13th - 15th, 2001, in Las Vegas, Nevada USA. Past speeches and talks from DEF CON hacking conferences in an iTunes friendly m4b format. The DEFCON series of hacking conferences were started in 1993 to focus on both the technical and social trends in hacking, and has grown to be world known event. If you did not make it, or missed the speaker you want..
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Closing Ceremony and Awards. Hosted by The Dark Tangent. DEF CON 9 was held July 13th - 15th, 2001, in Las Vegas, Nevada USA. Past speeches and talks from DEF CON hacking conferences in an iTunes friendly m4b format. The DEFCON series of hacking conferences were started in 1993 to focus on both the technical and social trends in hacking, and has grown to be world known event. If you did not make it, or missed the speaker you wanted..
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A function for converting characters into a UTF-8 format, required by Google Maps for making API calls.
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That "a" stands for "not quite ready yet". This is sort of an intermediate release that focuses mainly on online multiplayer, which is largely functional, but needs more testing. Aside from polish and bug fixes, the only other things I'm going to add are more weapons and special abilities. And maybe a new level. We'll see. This release went much smoother than the last two, as I used Panda3D's built-in packpanda to make the installer. I al..
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Goodbye Stainless, hello A3P. I spent a good chunk of time creating new A3P material and switching everything over to the new name. Unfortunately, SourceForge's UNIX rename feature is down, so I created a new project for web hosting purposes only. The code and file releases are still on the Stainless SourceForge project. Which, to be extra confusing, I renamed as well, but again, I couldn't change the UNIX name.
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Lately, I’ve been working on two code katas, that is, programming exercises that I repeat until the motions are secure in my muscle memory. The katas I’ve chosen are: Java EE Spike: An application that stores People with names to a database and lets me search for them. I’ve repeated this pair programming with several different programmers. Programmable Fizz Buzz: Create a sequence of numbers 1,2,fizz,4,buzz,fizz,… you know the one. And the ..
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Cary Millsap’s recent post prompted me to write down some of the related thoughts in my head. Here are few of my mantras for systematic troubleshooting and performance tuning, which have materialized in my head over the years of work: Picking the right starting point to troubleshooting and performance tuning is the most important decision in that process. Pick the wrong starting point and you end up going in circles. The scope of your....
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Cary Millsap’s recent post prompted me to write down some of the related thoughts in my head. Here are few of my mantras for systematic troubleshooting and performance tuning, which have materialized in my head over the years of work: Picking the right starting point to troubleshooting and performance tuning is the most important decision in that process. Pick the wrong starting point and you end up going in circles. The scope of your....
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If you’re a regular user of the terminal on a UNIX system, there are probably a large number of behaviors you take mostly for granted without really thinking about them. If you press ^C or ^Z it kills or stops the foreground program – unless it’s something like emacs or vim, in which case it gets handled like a normal keystroke. When you ssh to a remote host, though, they go to the processes on that machine, not the ssh process.
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If you’re a regular user of the terminal on a UNIX system, there are probably a large number of behaviors you take mostly for granted without really thinking about them. If you press ^C or ^Z it kills or stops the foreground program – unless it’s something like emacs or vim, in which case it gets handled like a normal keystroke. When you ssh to a remote host, though, they go to the processes on that machine, not the ssh process.
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Recently, the Amazon Kindle 2 (International Edition) arrived in Canada (the last country to get it :-), and I recently picked one up. Since its original introduction in November 2007, I have watched reviews of it fly around the Internet and on blogs such as GeekBrief.tv. Although the reviews were generally positive, I really couldn’t visualize myself replacing my book collection with a Kindle for the simple reason that books have their ..
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Recently, the Amazon Kindle 2 (International Edition) arrived in Canada (the last country to get it :-), and I recently picked one up. Since its original introduction in November 2007, I have watched reviews of it fly around the Internet and on blogs such as GeekBrief.tv. Although the reviews were generally positive, I really couldn’t visualize myself replacing my book collection with a Kindle for the simple reason that books have their ..
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Sorry for the distinct lack of updates this blog has. A lot is happening right now with Stainless, and most of it's good. :) First off, Stainless is going to have online multiplayer! Woot. Thanks to the fabulous work by the guys over at Panda3D, it may even live in a browser plugin on the SourceForge website. Either way, I came across a problem I never anticipated with online multiplayer: NAT punch-through .
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Adam Bresson has been programming in PHP, MySQL and HTML for over five years. After his DEF CON talk on Palm Security last year, he decided to explore security on a different, free platform. With ten years of networking experience behind him, he created GNU methods for monitoring security and data mining in PHP. He hopes you extend this foundation. Ask questions!
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Adam Bresson has been programming in PHP, MySQL and HTML for over five years. After his DEF CON talk on Palm Security last year, he decided to explore security on a different, free platform. With ten years of networking experience behind him, he created GNU methods for monitoring security and data mining in PHP. He hopes you extend this foundation. Ask questions!
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