UUIDs (Universally Unique IDentifier), also known as GUIDs (Globally Unique IDentifier), is a string that identifies a piece of information in computer systems. WordPress use GUIDs to identify each individual post, but use URLs (kind of) for GUIDs, and thus does not follow the standard definition (RFC 4122) of a UUID (or GUID).
Tag Archives: howto
How to perform and mitigate a WordPress session donation attack
WordPress doesn’t use a nonce for the login form, which opens up for you to perform a WordPress session donation attack.
Encrypt and decrypt a file using SSH keys
If you have someone’s public SSH key, you can use OpenSSL to safely encrypt a file and send it to them over an insecure connection (i.e. the internet). They can then use their private key to decrypt the file you sent.
Block access to PHP files on your WordPress site with Nginx
In your WordPress site, there are directories that include PHP files that visitors should never be able to access directly. They are only there for WordPress to function as an application that runs on your server. But because of WordPress’ directory and file structure, they are kind of accessible to the public. All of themContinue reading “Block access to PHP files on your WordPress site with Nginx”
Running HHVM with fallback to PHP-FPM
HHVM can really speed up your PHP-based web site. Most reports are somewhere in the range of 2–4x faster. Unfortunately, HHVM isn’t very stable and will suddenly die, just of the blue, from time to another. Fortunately, if you’re running Nginx it’s really easy to set up PHP-FPM as a fallback.
«Slap-on» speed optimization of your WordPress site
OK, so you might have been at a WordCamp listening to talks or reading a few blog posts and you get that you should really get your WordPress site speed optimized. Starting all over isn’t either tempting nor something you have the time for. Don’t despair, you’ll get a long way by installing 5 plugins.
Install latest version of Nginx on Ubuntu
I always run the latest LTS version of Ubuntu on all my servers. Unfortunately, the Nginx versions tend to be quite the bit behind the current release. So how do you get an updated, current version of without resorting to having to maintain the packages yourself? Luckily, the Nginx team have their own Ubuntu aptContinue reading “Install latest version of Nginx on Ubuntu”
Install latest version of PHP on Ubuntu
I always run the latest LTS version of Ubuntu on all my servers. Currently the latest LTS is 14.04 which comes with PHP version 5.5, but as of November 2014, the latest stable version is 5.6. So how do you get an updated, current version of PHP without resorting to having to maintain the packages yourself? TheContinue reading “Install latest version of PHP on Ubuntu”
Publishing WordPress site from development to production server – or moving your WordPress installation from one host to another
You have finished that WordPress site, and want to deploy it – move it from your test server to the production server where it goes live. But how? WordPress have a famous 5-minute-install, but there is no 5-minute-go-live-script. This is how.
Restricting access to WordPress login by IP address
If you have a static IP address, like from your own VPN, it is very easy to increase your security tremendously. Simply restrict all logins to that IP address.