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A collection of articles relating to server-side tools and Apache modules. We mostly use a standard LAPP (Linux, Apache, PostgreSQL, PHP) installation hosted on Debian/GNU Linux. Most details will apply also to other systems, though some file paths will differ.

Articles relating to Server-side

Order by: topic | title | most popular | most recent

Apache 2.4

• Access authorization in Apache 2.4
• Apache authorization with dynamic DNS
• Authenticating Apache Logins with PostgreSQL
• Blocking Fake Googlebot and bingbot spiders
• Re-naming vhost files to *.conf for Apache 2.4

Browser Bugs

• Safari 3 Breaks HTTP Authentication
• Safari 5.1 Breaks Basic Authentication

CRON

• cron-apt update notification and security upgrades in Wheezy
• Setting CRON in a different time zone

Fail2Ban

• Blocking FTP Hacking Attempts
• Fail2Ban 0.8.3 Howto
• fail2ban and iptables
• fail2ban and sendmail
• Implementing Port Knocking with knockd
• Monitoring the fail2ban log
• Optimising your Fail2Ban filters
• Using a Fail2Ban Jail to Whitelist a User
• Using systemd to bind fail2ban to nftables

Image Manipulation

• Adding a watermark using ImageMagick

Log Files

• Analyzing Apache Log Files
• Bash script to generate broken links report
• Blocking Unwanted Spiders and Scrapers
• Controlling what logs where with rsyslog.conf
• Fake Traffic from AVG
• Logging sFTP activity for chrooted users
• Referer Spam from Live Search
• Referer Spam from Microsoft Bing

ModPagespeed

• Apache mod_pagespeed issues
• Apache mod_pagespeed settings

mod_rewrite

• Avoiding duplicate content filters
• mod_rewrite: Examples
• mod_rewrite: Seach Engine Friendly URL's
• Saving bandwidth with mod_rewrite and ImageMagick
• Using mod_rewrite to canonicalize and secure your domain

Sendmail

• Analysing mailq and the mqueue directory
• Analysing the mail.log
• Expanding IPv6 Addresses for DNSBL Checks
• Using qtool.pl to manage sendmail queues

Miscellaneous

• Accessing Public IP address from behind NAT
• Apache Request and Response Headers
• Calculating Subnets
• Emulating an HTTP/1.1 Request using Telnet
• Fighting Form Spammers
• Generating a Certificate Signing Request (CSR)
• HTTP Server Status Codes
• Identifying unused resources with inotifywait
• Integrating resolvconf and pdnsd
• IPv6 Networking and DAD
• Moving munin stats to tmpfs
• New Apache instance with Reverse Proxy
• procmail
• Searchable Directory of User Agents
• Webalizer Numbers Explained
• Web Server Attacks and Exploits
• WWW Hacker Activity
• xferlog - ProFTPD server logfile