FastCGI is a protocol for interfacing interactive programs with a web server. FastCGI’s main aim is to reduce the overhead associated with interfacing the web server and CGI programs, allowing a server to handle more web page requests at once.
Also, PHP is not recommended with multithreaded Apache2 (worker MPM) because of performance and some 3rd party PHP extensions are not not guaranteed thread-safe.
nginx and lighttpd has inbuilt support for FastCGI. For Apache web server you need to use either mod_fastcgi or mod_fcgid.
mod_fastcgi allows server and application processes to be restarted independently — an important consideration for busy web sites. It also facilitates per-application security policies — important for ISPs and web hosting companies.
In this quick tutorial, you will learn about Apache 2 + mod_fastcgi + PHP installation and configuration under Red Hat Enterprise Linux / CentOS Linux version 5.x+.
This is 3rd and the final installment for Apache Chroot Jail for CentOS / RHEL series. Once Apache is configured with mod_chroot, you may need to test and debug problems. This article will provide a few troubleshooting tips.
In this second part you will learn about creating user accounts, SKEL directory and virtual hosting configuration under chrooted Apache jail.
A chroot on Red Hat / CentOS / Fedora Linux operating changes the apparent disk root directory for the Apache process and its children. Once this is done attacker or other php / perl / python scripts cannot access or name files outside that directory. This is called a “chroot jail” for Apache. You should never ever run a web server without jail. There should be privilege separation between web server and rest of the system.
In this exclusive series, you will learn more about:
- Securing an Apache 2 web server under Red Hat Enterprise Linux / CentOS Linux using mod_chroot
- Virtual hosting configuration
- Troubleshooting Chrooted Apache jail problem.
Debian 5 php5 package has serious security issues as follows:
To prevent Denial of Service attacks by exhausting the number of available temporary file names, the max_file_uploads option introduced in PHP 5.3.1 has been backported.
A few days ago I noticed that NFS performance between a web server node and NFS server went down by 50%. NFS was optimized and the only thing was updated Red Hat kernel v5.2. I also noticed same trend on CentOS 5.2 64 bit edition.
This is 3rd and the final installment for Urchin 6 web analytics software series. Once Urchin is installed, you need to configure tracking on your website. You need to install Urchin sensors – a small piece of javascript tracking code on each of your website’s pages.
