Here is an HTML Color Chart:
HTML Color Chart
Quick and Reasonably Secure WordPress install
Rather than relying on the security provided by the default WordPress install, we have utilized some other security measures. We changed the prefix to the wordpress table names so zero-day SQL exploits which depend on default installations will not work. Defeating zero day exploits is significant because new WordPress vulnerabilities emerge often, and exploits may […]
Apache and System V IPCs
Apache and some other programs need System V Inter-Process Communication (IPC) enabled in the Linux kernel. If you get this error when starting Apache: [emerg] (38)Function not implemented: Couldn’t create accept lock then it is possible that System V IPC is not enabled. If you are creating a custom Linux kernel, the option you want […]
We’re Back on Mosaic Again…
Back when NetAdminTools started out in 1997, NCSA Mosaic was still being maintained (back when a friend was a friend). Mosaic was a decent choice for a browser back then, especially on GNU/Linux distributions. Today it is useful to see just how Frankenstein your site looks without Javascript and CSS. Sure… it is less and […]
Adding Hostname to WordPress
We often move our WordPress install around to different machines, and wanted to know what host the WordPress install serving the page was. We are using the mon-caheir theme, as part of MCJ, but this should work similarly with other themes. Edit wordpress/wp-content/themes/mon-cahier/header.php, find the line that contains site-description, and change it so it looks […]
Backing up WordPress via Import/Export
It is quite easy to back up and restore WordPress with the WordPress Importer plugin. First, back up your blog by going to your dashboard, and tools/import: To restore your articles to another system, just select import and the WordPress: Choose the file that you exported: Assign the author as you wish. For us, we […]
Customizing the Chrome Frame Image
It is possible to put background text on the frame of Chrome by creating a custom extension. Generally, I’m pretty conservative about browser themes, because too much noise makes it difficult to scan a page. The web is noisy enough as it is. I have a need to constantly look up some information that id […]
Creating an htpasswd file for NGINX
There is a python script available here that will create an htpasswd file. Here is how you configure the NGINX configuration file: location / { ……………………….. auth_basic “Restricted”; auth_basic_user_file /opt/nginx/conf/htpasswd; ……………………….. } Here is how you use the utility: /opt/nginx/conf# htpasswd.py -c -b htpasswd username password Just restart NGINX and you will get a basic […]
Creating Your Own WebID Using Openssl
Create a configuration file like this: [ req ] default_md = sha1 default_bits = 2048 distinguished_name = req_distinguished_name encrypt_key = no string_mask = nombstr x509_extensions = req_ext UID = netadmintools UID_default=”https://netadmintools.com/foaf.rdf#me” [ req_distinguished_name ] commonName = netadmintools.com commonName_default = WebID for NetAdminTools Webmaster [ req_ext ] subjectKeyIdentifier = hash subjectAltName = critical,@subject_alt basicConstraints = CA:false […]
Installing A Certificate on Internet Explorer
In Internet Options, select Content: Click on Certificates: Click Import: Next to proceed. Find your certificate. In this case it is a WebID file: Enter a password for the key if there is one (don’t worry, you only have to enter this when you import the key the first time): Choose a personal store: Choose […]
Installing A Certificate on iOS
Email yourself the .p12 cert, and open it: Install: Install now. Enter the password for the cert: Done when ready: If the certificate is a WebID, this is what it looks like: Choose a personal store: This is the cert we created in this article:
Installing A Certificate on Firefox
Go to Options, select the Advanced icon, and the Enryption tab. Make sure that USE TLS 1.0 is checked, and click View Certificates: Click view certificates. Click the Your Certificates tab: Clikc Import. You will be asked to select your .p12 file: Enter the password for the certificate. You are only asked this when you […]
Installing A Certificate on Chrome
Go into Chrome Settings: Way down at the bottom, click Show advanced settings. Find the HTTPS/SSL Manage certificates button: Push the button and you will be in Certificate manager: Click import, and you will be asked for the certificate. Navigate to your .p12 file and import: Enter your password and click OK when you see […]
Customizing the MediaWiki Toolbar Signature
One reason I enjoy the world of open source so much is that if I want something to be a certain way, I can make it be that way if I spend enough time. As an example, I use MediaWiki as a simple blog. It allows me to easily make an entry without much fuss. […]
Using Curl With PHP to Retrieve Pages With Basic Authentication
To retrieve a particular page from another web site using basic authentication, use this PHP script: <?php $path = $_GET[‘path’]; $username = “username”; $password = “password”; $uri = “https://example.com/$path”; $ch = curl_init($uri); curl_setopt_array($ch, array( CURLOPT_RETURNTRANSFER =>true, CURLOPT_USERPWD=> “$username:$password”, CURLOPT_HTTPAUTH=> CURLAUTH_ANY, CURLOPT_VERBOSE => 1 )); $out = curl_exec($ch); curl_close($ch); echo $out; ?> Use the path of […]
Getting Rid of WordPress Comments Off
Perhaps you can override this; however, if you want a quick hack to not display “Comments Off” on WordPress blogs that you don’t have comments on, find these lines in wp-includes/comment-template.php: if ( false === $zero ) $zero = __( ‘No Comments’ ); if ( false === $one ) $one = __( ‘1 Comment’ ); […]
OpenBSD 2.9
BSD is often a good choice for utility boxes running stuff like Sendmail or BIND. The hardware support isn’t as good, and if you think desktop applications are bad with Linux, then you certainly aren’t going to like BSD. BSD is arguably more secure and stable than Linux. In the gradient of stability, though, Linux […]
Using Eterm Remotely with Clipboard on OS X
I have a GNU/Linux box running CentOS that is up all of the time, and is my main workstation. Lately, I’ve needed to use a laptop, and am running OS X Tiger on it. I’ve always enjoyed Eterm, but getting this to run on OS X is difficult. Since I mainly work on remote servers […]
Setting up X11 on OS X Tiger
After a bit of work, I have my desktop on OS X Tiger working well. I’m used to GNU/Linux, and it took me awhile to find the right combination of tools. Here is a screenshot of my desktop: click for larger image. Some key issues that I solved that are visible above: The clipboard works […]
Flushing the DNS Cache on Mac OS X
Use this command to flush the DNS cache on Mac OS X: lookupd -flushcache It appears that the cache overrides /etc/hosts.
