Random Bugs - Just another Bastard Opera |
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| Listed in | Linux_unix on position 8 and overall rank is 1536 |
| Country | Romania |
| Language | English |
| Owner | sacx |
| Member Since | January 28, 2009 |
| URL | http://www.randombugs.com |
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| Tags | debian | java | linux | tuning | ubuntu | unix | |
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Latest Posts on: Random Bugs - Just another Bastard Operator From Hell
Retrieved latest 5 posts at: http://feeds2.feedburner.com/randombugs
Glassfish 3.1.1 workaround for Denial of Service through hash table multi-collisions
This 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. ..
Posted on 5 January 2012 | 12:42 pm
Choosing a communication library for a distributed application
Together 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 h..
Posted on 3 January 2012 | 9:34 am
User [admin] from host null does not have administration access
I 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 ..
Posted on 23 November 2011 | 9:24 am
HTTP transport error: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: signature check failed
I 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.Va..
Posted on 13 July 2011 | 4:45 am
Apache Dynamic Virtual Hosting and PHP security
It’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..
Posted on 6 June 2011 | 12:35 pm