I know that Secure, Safe, Fast Linux Hosting sound silly as nothing can be fast and secure at the same time, but I've compiled a list of things that are worth doing if you are maintaining your own server. This list is clearly targeted for people running an open source stack made of Apache, MySQL, PHP and Linux.

This list is an ongoing work, thta is why it has also a version number in it (v1.0). As soon as I will learn new tricks, the list will be updated.

By clicking read more, You'll be able to go through the checklist, or maybe you'll prefer the mindmap version HERE



Secure, Safe,
Fast Linux Hosting

v 1.0

  • PHP settings
    • disable functions
      • show_source
      • system
      • popen
      • proc_open
      • phpinfo
        • dont give info to outside world
      • exec
      • passthru
      • shell_exec
      • file_open_base
        • set to http root to avoid path transversal attack
    • disable SAFE_MODE
    • compile your own php
  • Check often crontab
    • FAF file anomaly finder
    • chkrootkit
      • check for rootkit periodically
      • too late if alarm
    • rkhunter
      • check for rootkit periodically
      • too late if alarm
    • Possible Exploit Script Report
      • scan files with regex after pattern

    • secheck
      • openBSD scripts
      • run opensuse/debian also
    • daily/weekly/monthly database backup
      • create google account
      • automysqlbackup.sh
    • antivirus
      • clamav is free
      • virus database update auto
  • More security
    • Apache
      • mod_security
        • kind of software firewall
        • based on regular expressions
        • predifined rulesets
          • www.gotroot.com
          • www.modsecurity.org
        • fake apache signature: NOYB
      • mod_evasive
        • escape denial of service attack
      • mod_php
        • to avoid
          • php script run with apache user
          • php script can change files across clients on server
          • only one php.ini for all domains and users
          • only one php version
        • use mod_fcgi instead
          • php scripts run with user right
          • per client/user a php.ini
          • run php4 and php5 in same apache
          • run != php version per directory
      • remove uneeded modules
      • server-tuning.conf
        • tuning
          • worker is better but only if php fastcgi as mod_php not multithreaded
          • forked with mod_php, use more memory
        • use threading model not forked
          • only with php fastcgi
    • file system
      • less rights rules
        • the less right the better
      • check files right often
    • htaccess
      • in some directory
      • not really secure
    • passwords
      • not human readable
  • Keep system secured
  • Getting more Speed
    • Install PHP Opcode cache
      • file based
      • memory based
      • APC
        • advanced PHP cache
        • use by wikipedia
        • 100% more output speed
    • reduce DNS lookup
      • less js, css, images include
      • mod_deflate
        • PHP can also zip response
          • cpu cost vs bandwidth
      • mod_expires
        • set expire header on files, pics, js
        • tell the browser to not request file before xx days/months
    • infrastructure
      • mutiple apache
        • one tuned for static content, gif, zip, html, pdf
        • one for dynamic php, perl
      • multiple database server
        • tuning, allocate more buffer
        • complex, costly
      • memcache
      • ideas
    • put more memory in server
  • Load Tests
    • Load produce per page is based on
      • user interaction: their speed and behaviour
      • size of page
        • number of static element
          • images
          • css
          • files
          • DNS lookup for external embeded file
        • business logic
        • shared ressource
          • database access
        • quality of schema, index missing
    • Use a tool to create virtual users
      • fix objectives
        • so many xxxxx users in system
        • so many open sessions
        • best response time
      • iterative process
      • small changes
      • load system
        • better
        • worse
          • rollback changes
    • Many tools on the market

You might like also

The Appthority® App Report
The Appthority® App Report for February 2013 provides an overview of the security risks behind 100 free iOS and Android apps. Appthority examined the differences between the Android and iOS app ecosystems; compared app behaviors across five popular app categories (business, education, entertainment, finance, games); and looked at the developers behind these apps. Report Highlights The vast majority of free apps send and receive data to outside parties without encryption. 96% of total apps share data with advertising networks and/or …
2518 Days ago
CryptoParty Handbook v1.1 has been released
CryptoParty is a grassroots global endeavor to introduce the basics of practical cryptography such as the Tor anonymity network, key signing parties, True Crypt, and virtual private networks to the general public. The first draft of the 442-page CryptoParty Handbook (the hard copy of which is available at cost), was pulled together in three days using the book sprint approach, and was released 2012-10-04 under a CC-BY-SA license; it remains under constant revision. The CryptoParty Handbook v1.1 has been released and you …
2562 Days ago
Virtualizes a Linux server on the fly with RSYNC
You'll need a lot of patience...Since there is no VMWARE Converter for #Linux...My objective is to virtualizes my Internet server running SUSE in a VMWARE to ease the migration to a more powerful and up to date server. I am using RSYNC since: I have no access to the machine, So I can't stop the server and make a binary images of the disk as the server is in a STRATO data center in Germany (Berlin) I don't like operations …
4210 Days ago
How to Secure Your Windows Computer and Protect Your Privacy
Anybody using internet should really read this article. While targeted at windows users, most of the rules also apply to users of #Linux and mac. "Security consultant Howard Fosdick has contributed the latest entry in the 2008 OSNews Article Contest: a highly detailed examination of security and privacy on the Windows platform, and how to use free software tools and a little knowledge to protect your privacy online. Do you know that -- Windows secretly records all the web sites …
4318 Days ago
Security made easy, automatic scan and update of your installed applications
If you are on the paranoia side, and you better should, if you're using ebanking on an internet connected pc. Secunia is a well known internet site, Secunia is a Danish computer security service provider best known for tracking vulnerabilities in more than 12,400 pieces of software and operating systems. Numbers of "unpatched" vulnerabilities in popular applications are frequently quoted in software comparisons.Secunia also tracks currently active computer viruses. Secunia has gained publicity and a notable reputation with the discovery …
4504 Days ago
No Thumbnail was found
FaF (File Anomaly Finder) is a wrapper for the *nix 'find' utility. It generates audit reports for data matching specific characteristics; such data as setgid/setuid, unowned, and more. The objectives are simply to create a simple anomaly finder that identifies common flawed permissions or otherwise suspicious file system characteristics. The main features of FaF are: simplistic and to the point audit reports easy setup and configuration audits emailed to customizable address or user ideal for web servers or general purpose …
4603 Days ago
No Thumbnail was found
SIM is a system and services monitor for ‘SysVinit’ systems. It is designed to be intuitive and modular in nature, and to provide a clean and informative status system. It does this by consistently verifying that services are online, load averages are in check, and log files are at reasonable sizes. Many other SIM modules sport different and in-depth features to bring a well rounded tool to your disposal to stop otherwise common issues daunting internet hosts. Features: - Service …
4603 Days ago
No Thumbnail was found
Rootkit scanner is scanning tool to ensure you for about 99.9%* you're clean of nasty tools. This tool scans for rootkits, backdoors and local exploits by running tests like: MD5 hash compare Look for default files used by rootkits Wrong file permissions for binaries Look for suspected strings in LKM and KLD modules Look for hidden files Optional scan within plaintext and binary filesRootkit Hunter is released as GPL licensed project and free for everyone to use. …
4604 Days ago
No Thumbnail was found
chkrootkit is a tool to locally check for signs of a rootkit. chkrootkit is a common unix-based program intended to help system administrators check their system for known rootkits. It works by using several mechanisms, including comparison of file signatures to known rootkits, checking for suspicious activity (processes listed in the proc filesystem but not in the output of the 'ps' command. …
4604 Days ago
No Thumbnail was found
CSF : A Stateful Packet Inspection (SPI) firewall, Login/Intrusion Detection and Security application for #Linux servers. It easily replace APF and (Advanced policy firewall) and BFD (Brute Force Detection). It is also runing 28 basics but non obvious checks... …
4606 Days ago