With testing at another customer site, I found that sometimes Apache2::AuthNTLM does not provide the username information when a web page has already been authenticated. Perhaps it might do it with every page if I turn off the 'cache' parameter in the return headers. Anyway, the new autohandler will rely on the session uuid to keep authorization going on pages which AuthNTLM does not return a username.
Thursday, March 29. 2007
Web Page Authorization with Perl and Mason
The monitoring server described in these various articles uses an Apache 2.0 based web server loaded with mod_perl and page templating language based upon mason. I'll put up on this site the other pages I have, but for the moment I just wanted to get the authentication stuff documented. Continue reading "Web Page Authorization with Perl and Mason" »
Wednesday, March 28. 2007
Trading Site of the Day -- Some Random Picks
Here are some notes and web locations I've come across that appear to be relevant to Active Day Traders and Automated Trading Strategies. Continue reading "Trading Site of the Day -- Some Random Picks" »
Tuesday, March 27. 2007
Aging Concepts in Genetic Programming
I've used some Genetic Programming in the past to assist with some trading optimizations. As part of calculating the population of a new generation, I've used a concept of elitism to keep the best individuals propogating to new generations. Some researchers seem to think this is a good thing, where others think this is a bad thing. As there was no real consensus about this, I chose the side saying this is a good thing. Now that I've heard about a concept of being able to age individuals, perhaps I can modify how I build new populations somewhat.
Monday, March 26. 2007
Installation and Configuration of PGAdmin on Debian
A multiplatform GUI tool called pgAdmin is available for managing and querying PostgreSQL databases. It is available at www.pgadmin.org. Continue reading "Installation and Configuration of PGAdmin on..." »
Friday, March 23. 2007
Trading Site of the Day -- Day Trader's Bulletin
Although Day Trader's Bulletin looks like it hasn't been updated in a while, it still contains useful and timely information. For example, in my own research, I've discovered the use of the INDU and the TICK as useful bellweather's for day trading. Knowing What Indicators to Monitor goes into additional details of these indicators plus adds a few more, such as: SPX (S&P 500 Cash), Down Transports (TRAN), selected stock issues, and intraday highs and intraday lows. The article goes on for a few additional pages in review of other things to keep an eye out for. Continue reading "Trading Site of the Day -- Day Trader's Bulletin" »
Genesis Securities on Elite Trader Chat Room
There is a chat log on Elite TRader where Serge Pustelnik discusses some background on Genesis Securities, Program Trading, and software development. Scalping techniques for out-scalping the computer are also discussed.
Wednesday, March 21. 2007
Peak Selection, Pivot Analysis, and Fibonacci
Sometimes it takes a while to realize that how various things work together. The light has dawned. I wrote some code to do peak detection a while ago. By using this tool over multiple time frames, and associating Fibonacci intervals on the advancing lines, one can automatically search out possible turning points. A CBOT article called Trading the CBOT mini-sized Dow - Master Technician Techniques provides the ground work for how this would be done from an analytical perspective. These possible Fibonacci turning points can be strengthened if some of them overlap calculated pivot points. Further strengthening is achieved if Fibonacci turning points occur at the same location over multiple time intervals. As the author, John Person, says in the article, "Combining Pivot Point numbers with the Fibonacci analysis we have a much better outlook and confirmation of Support and Resistance targets." Continue reading "Peak Selection, Pivot Analysis, and Fibonacci" »
Tuesday, March 20. 2007
Connecting to Debian X Windows with Cygwin/X
On some of the monitoring servers I install, KDE is installed and running. For remote management, it is nice to connect to it remotely via Windows XP host. To do so, I did the following:
- On the monitoring server, edited /etc/ssh/sshd_config, and changed X11Forwarding to yes. This is necessary for getting DISPLAY set properly.
- Reload sshd after change in setting: /etc/init.d/ssh restart
- Downloaded and installed Cygwin. During installation, I made sure that under the X11 heading, that the xorg-x11-base package was selected
- Started Cygwin with the desktop icon
- In my Cygwin home directory: cp /etc/X11/xinit/xinitrc .xinitrc
- In my Cygwin home directory, Started the xwindows process with: startx
- In the new GUI window, connect to the monitoring server with: ssh -Y -l username serverip
- It is possible to run 'startkde' but on my setup, currently, it doesn't appear to work quite right, but I can run individual XWindows based programs by starting them with their command line names
vBulletin was helpful in troubleshooting some connectivity issues.
Government Security has some more info on Cygwin, X11 Forwarding, and SSH. The site was either copied to or from a Linux Journal article.
For using vnc and securely remoting vnc, Debian Administration is helpful.
Monday, March 19. 2007
Be a Price Maker, Not a Price Taker
Benson Shapiro wrote an article at the Harvard Business School called commodity Busters: Be a Price Maker, Not a Price Taker. In the article, he very elegantly writes about the importance of differentiating oneself from the competition. Rather than competing head to head, it is wise to pick a niche and become a monopolist in ones own right. Continue reading "Be a Price Maker, Not a Price Taker" »
Low Latency Data and Trades
SmartQuant was recently purchased by QuantHouse. Quanthouse provides low latency data and is using the SmartQuant framework in their product line. Continue reading "Low Latency Data and Trades" »
Sunday, March 18. 2007
New Cisco Voip Wiki
cisco-voip.org is community based self-help Wiki for users, buyers, installers, and troubleshooters of Cisco Voice products.
Saturday, March 17. 2007
Futures Trading
This is a short entry with three links: Continue reading "Futures Trading" »
Friday, March 16. 2007
NetFilter Documentation, Tutorial and Pictures
The packet flow through netfilter has been a little hazy for me. Today I received enlightenment. Pablo Neira Ayuso has a paper called Towards 4th Generation Linux Firewalling Tools. On page 10 of that presentation is an excellent drawing of the iptables paths and what is performed in each path. It clearly shows PREROUTING, FORWARD, INPUT, OUTPUT, and POSTROUTING. Continue reading "NetFilter Documentation, Tutorial and Pictures" »