Which Linux distribution do you primarily use on your Linux Server?
October 9, 2009
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RandomByte – Linux and girls
- Crysis 2 - Upcoming on 2010 Holiday April 12, 2010
- The book of Eli April 10, 2010
- Ubuntu Contributed Logos October 14, 2009
- Windows 7 price September 30, 2009
- Humanity Lobotomy - Protecting the future of the Internet July 14, 2009
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RandomBugs – From *nix to SQL
- Glassfish 3.1.1 workaround for Denial of Service through hash table multi-collisions January 5, 2012This is an old bug, first discovered in 2003, but now was applied to the hash table functions from the new programming languages. The main idea behind this bug is to create hashes which collide, because collision will eat a lot more cpu cycles on your server. For a post of 2 MB is resulting in a 44 minutes of CPU time which will results in a DOS. As suggeste […]
- Choosing a communication library for a distributed application January 3, 2012Together with some colleagues I started to put the base for a distributed application. Everything is looking good, but we have a big dilemma. We don’t know what communication API to choose. In first phase we didn’t have so many options to choose, but after some research, we found several good communications libraries, and now, is very hard for us […]
- User [admin] from host null does not have administration access November 23, 2011I should admit, I didn’t read the Glassfish 3.1 Administration Manual, and I don’t know if this is documented. Anyway the main problem appeared when I tried to connect on my cluster instances with admin credentials. If I connect with VisualVM or JConsole to Domain Administration Server (DAS) on 8686 I don’t have any problem. When I’m […]
- HTTP transport error: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: signature check failed July 13, 2011I switched all my Java Glassfish webservices to SSL, because I wanted to have an encrypted communication between me and my clients. Until then, all my applications worked flawlessly over the HTTP protocol, but now, after switching to SSL, I got the following error: HTTP transport error: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorExc […]
- Apache Dynamic Virtual Hosting and PHP security June 6, 2011It’s been a while since I configured the latest Dynamic Mass Virtual Hosting Server. Last time I used mod_vhost_alias to create a dynamic virtual hosting and it worked without any problem for what we need in that time. Then we didn’t care about the ftp and virtual users, the sites was updated from web pages and security was pretty much handled by […]
