Sysadmins of the North

The other day, when I attempted to add a newly installed Active Directory to become the slave domain controller of a master, the error message "A domain rename operation is already in progress" was displayed.

Cconvert decimal to hex hexadecimal to decimal and Unix timestamps in Linux Bash.

How to set up a global Geolocation DNS load balancing Varnish Cache Content Delivery Network with Bind9, geo-ip database, Varnish Cache and DigtalOcean.

Learn how to optimize PHP performance by checking and setting PHP realpath_cache_size.

Use a PHP redirect script to redirect old PHP URLs to new ones.

How to display commas in WordPress tags?

In this article you'll learn how to start all stopped application pools that have the ApplicationPool.AutoStart property set to $True using AppCmd.exe or PowerShell.

A useful PHP script to check if your website is up and online available.

Exploit PHP's mail() function for remote code execution.

Outdated but fun: PHP 7 with OPcache in IIS Express for Microsoft WebMatrix 3: create your DevOps with Microsoft WebMatrix and IIS Express The post Custom PHP version on IIS Express and WebMatrix 3 appeared first on Sysadmins of the North.

Learn how to override wp-mail() and send secure email using authenticated SMTP and StartTLS from WordPress.

How to identify, block, mitigate and leverage xmlrpc.php scans, brute-force, and user enumeration attacks on WordPress sites...

Windows Server IIS loves to tell the world that a website runs on IIS.

When the .svc web service handler doesn't work in IIS with ASP.NET 4.5 and returns a 404 Not Found error, you may need to add an extra handler to IIS.

Learn how to speed-up Joomla performance on Windows Server IIS using these 8 simple, but important, tips.

MySQL indexes (indices) are important.

Ghost Publishing platform uses Nodemailer to send email with Node.js.

Converting MyISAM tables to InnoDB for more database performance, because: 1) MyISAM is old and no longer developed, and 2) InnoDB is much faster.

How to delete all MAILER-DAEMON emails from your Postfix queue, when it matches a sender or recipient email address condition.

Easily enable support for the WebSocket protocol on Windows Server IIS by installing the Web-WebSockets feature using PowerShell.

Sometimes it's important to remove (or hide) the file extension of scripts you use.

Investigate SMTP authentication issues like a boss!

Gzip compression conflicts with IIS Outbound Rules resulting in HTTP 500.52 URL Rewrite Module Error.

The autoload feature loads and caches all autoloaded options, if available, or all options.

MySQL's mysqlcheck is a command line table maintenance program: it checks, repairs, optimizes, or analyzes 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.

MySQL string comparison functions for MD5 and SHA1 hashes; how to calculate MD5 and SHA1 hashes in MySQL and let MySQL do the calculations for you.

Change file attributes with PHP chmod to make files read-only or normally accessible on Windows Server IIS.

The System.Net.Mail Namespace leaves out the required Message-ID header in email.

PHP script to make your MySQL database smaller, leaner and faster by optimizing all tables with mysqli multi_query().

Delete WordPress spam comments and meta data in your database, easily with phpMyAdmin or mysql cli.

Configure Umbraco for SQLServer sessionState storage and prepare Umbraco for high performance web garden or web farm, and load balancing environments.

Check the connectivity of multiple MySQL servers, and connect to the servers in a loop.

Address both x86 and x64 versions of .NET with AppCmd.

MySql.Data.MySqlClient ASP.NET test script The post Test MySQL database connectivity with MySql.Data.MySqlClient appeared first on Sysadmins of the North.

Split a csv field into two fields using Vim and print or delete csv fields with AWK/Gawk (how to) The post Split Comma Separated Values (csv) fields with VIM or sed appeared first on Sysadmins of the North.

Async PHP calls with XMLHttpRequest The post Asynchronous PHP calls with XMLHttpRequest appeared first on Sysadmins of the North.

PHP MySQLi extension supports multiple queries which are concatenated by a semicolon.

The Forfiles command on Windows selects and executes a command on a file or set of files.

The less spammers hit your WordPress blog, the better your blog performs, is one of my opinions.

How to use PowerShell to add websites and application pools in IIS The post Add websites and application pools to IIS with PowerShell, in a for loop appeared first on Sysadmins of the North.

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.

Fix "System.Net.WebException: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel." in ASP.NET on IIS The post Fix “Could not establish trust relationship for the SSL/TLS secure channel” error appear…

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.

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.

As of PHP 5.3.2 you have to use the SQLSRV API functions to connect to an Microsoft SQL Server database from PHP.

In this post I provide you various HTTP to HTTPS redirection methods, for Windows Server IIS and Linux Apache.