Technical SysOps blog, where topics include Sysadmin, DevOps, computers, servers, web, MySQL, database, virtualization, optimization and security
Technical SysOps blog, where topics include Sysadmin, DevOps, computers, servers, web, MySQL, database, virtualization, optimization and security
Windows Server IIS loves to tell the world that a website runs on IIS. It does so with the "Server:" header in the HTTP response, as shown below. In this post I'll show you how to remove HTTP response headers in Windows Server IIS. You don't want to give hackers too much information about your servers, right?.
Learn how to speed-up Joomla performance on Windows Server IIS using these 8 simple, but important, tips. Add caching, gzip compression, set your sessions & optimize MySQL database functions.
How to delete all MAILER-DAEMON emails from your Postfix queue, when it matches a sender or recipient email address condition. In Postfix, there are various similar commands to delete messages from the Postfix mail queue, based on the Message-ID and/or email address for example...
Easily enable support for the WebSocket protocol on Windows Server IIS by installing the Web-WebSockets feature using PowerShell. Learn how to install WebSocket Protocol support in Windows Server IIS 8.0.
Sometimes it's important to remove (or hide) the file extension of scripts you use. Security by obscurity might be that reason, if you don't want others to know what script language you are using for your website, or for static site hosts.
Investigate SMTP authentication issues like a boss! When using TLS encrypted SMTP connections, it's always handy if you are able to create a SMTP logon credentials and test SMTP authentication over a TLS/StartTLS connection. Preferably from your command-prompt.
Gzip compression conflicts with IIS Outbound Rules resulting in HTTP 500.52 URL Rewrite Module Error. Here is how to resolve this.
MySQL’s mysqlcheck is a command line table maintenance program: it checks, repairs, optimizes, or analyzes tables. Very handy for automated performance optimizations of MySQL databases and tables.
On IIS, Contact Form 7 captcha has one HUGE disadvantage: temporary captcha files placed in wp-content/uploads/wpcf7_captcha, are not automatically removed. Here is how to remove Contact Form 7 temporary captcha files on IIS…
Change file attributes with PHP chmod to make files read-only or normally accessible on Windows Server IIS.
Configure Umbraco for SQLServer sessionState storage and prepare Umbraco for high performance web garden or web farm, and load balancing environments. This post explains it all.
The Forfiles command on Windows selects and executes a command on a file or set of files. Forfiles is ideal for batch processing through scripts, for instance on Windows Server systems. With Forfiles, you can run a command on or pass arguments to multiple files. For example, you could run the type or del command on all files in a tree with the .txt extension.
The less spammers hit your WordPress blog, the better your blog performs, is one of my opinions. A second is, the less unnecessary plugins you use on your WordPress blog, the better. So, a little while ago I decided to remove plugins like Stop Spammer Registration Plugin and do its work myself.
Use IIS Outbound Rules and URL Rewrite Module to create a custom created Content Delivery Network (CDN) for static content ofloading and speed-up your website.
/bash/grep and /bash/rm give me an error Argument list too long. Here is how to overcome this error with Bash grep and rm.
Learn how to fix your PHP config instead of turning off CURLOPT_SSL_VERIFYPEER in php.ini and overcome certificate validation errors with cURL and PHP.
I was FedUp with Fedora Core 17/18 after a day, so I decided to return to my old love: Debian GNU/Linux. It’s been a couple of years, but I’m happy to be back! Just run the netinst installer which will take care of the most.
Here is how to install the Microsoft.SQLSERVER.CE.OLEDB.4.0 Provider and use classic ASP to connect to an SqlCe (SQL Server Compact) database sdf file, as a Microsoft Access database replacement.
How to use GnuWin32 ported tools like grep.exe and find.exe for forensic log file analysis in Windows Server. Find webshells and backdoors in websites, check visitor's IP addresses or hits to backdoor/webshell files in IIS log files easy. Command-line log analysis in Windows Server, search for Joomla-, WordPress-, Drupal- and PHP- malware & backdoors in your website with grep and find.
As of PHP 5.3.2 you have to use the SQLSRV API functions to connect to an Microsoft SQL Server database from PHP. For example, use sqlsrv_connect() to create a connection resource and open a connection. Learn how to connect to a Microsoft SQL Server database using PHP 5.3+ and SQLSRV.
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