Ibrahim F. Haddad Issue #91, November 2001 Ibrahim tests the performance of three open-source webservers on a typical Ericsson Research Linux clusterplatform. ARIES (Advanced Research on Internet E-Servers) is a project that started at Ericsson Research Canada in January 2000. It aimed at finding and prototyping the necessary technology to prove the feasibility of a clustered internet server that demonstrates ...

Best of Technical Support Various Issue #90, October 2001 Our experts answer your technical questions. Really Big malloc() I would like to understand what the issues are that limit the memory available to a single process under Linux. I have an Athlon 1.2GHz processor with 1.5GB of RAM and 2GB of swap space. The OS is Red Hat 7.1 with ...

Brian Gollsneider Mike Martin Issue #90, October 2001 Using Linux and Samba for research on extremely small lasers called VCSELs. Linux and Samba recently answered the needs of the Army Research Lab (ARL) at Adelphi, Maryland. Our branch does state-of-the-art research into a specific type of lasers and amasses large amounts of data during the performance testing of these devices. ...

Steve Jenkins Issue #90, October 2001 Steve describes a typical aircraft experiment and the open-source software involved. Long ago, before the Open-Source Software (OSS) movement, before the World Wide Web, before the Free Software Foundation and GNU, I was hired by the Unsteady Aerodynamics Laboratory of the National Research Council of Canada to work with the data-acquisition system for their ...

Best of Technical Support Various Issue #89, September 2001 Our experts answer your questions. The Dreaded “LI” Problem I put a second IDE hard drive in my PC and installed Mandrake Linux 8.0 on it. Now when I reboot, I have the dreaded “LI” problem, i.e., LILO displays only the first two letters of the LILO prompt. I believe the ...

Eric Rescorla Issue #89, September 2001 Do you have a burning need to build a simple web client and server pair? Here’s why OpenSSL is for you. The quickest and easiest way to secure a TCP-based network application is with SSL. If you’re working in C, your best choice is probably to use OpenSSL (http://www.openssl.org/). OpenSSL is a free (BSD-style ...

David A. Bandel Issue #89, September 2001 Using Netfilter and ipchains to increase security on home systems. For those of you who have taken the plunge and upgraded from kernel 2.2.X (or even 2.0.X) to 2.4.X, congratulations. If, like a number of folks, you’re running some form of firewall using either ipchains or ipfwadm, your scripts may work fine. But ...

Rob Beck Issue #89, September 2001 If we do not wish to fight, we can prevent the enemy from engaging us even though the lines of our encampment be merely traced out on the ground. All we need do is to throw something odd and unaccountable in his way. –Sun Tzu, The Art of War OS fingerprinting is a process ...

Best of Technical Support Various Issue #88, August 2001 Our experts answer your technical questions. Copying Old Tapes Before I came to my current job, the archive system was sporadic at best, using multiple media formats from DAT to Exabyte. I have been given the task of copying all these formats to a single standard (in this case AIT). I ...

Bruce Momjian Issue #88, August 2001 Tweak your hardware to get the most from this open-source database. PostgreSQL is an object-relational database developed on the Internet by a group of developers spread across the globe. It is an open-source alternative to commercial databases like Oracle and Informix. PostgreSQL was originally developed at the University of California, Berkeley. In 1996, a ...