Web design
Blocking referrer spam, mal-bots, and other malicious weasels with htaccess
Posted February 10th, 2007 by Caleb GAnyone who runs a site/server for very long will likely find out about the gruesome underbelly of the online work - spammers. They come in many shapes and sizes (most are bots), and with different purposes each, but they each have this in common - they hurt your site/server and it's available resources.
Below are some things to look out for and some methods to take care of one particular type of spam, referrer spam, which can cripple a site/server in no time. With enough referrer spam you'll have what amounts to a denial of service attack (e.g., so many junk requests that the server can't even tend to the real ones).
Example of how serious this can be
Recently one of the sites we host had a big traffic day thanks to being front paged at Fark.com and Foobies.com. 18,000+ unique visitors in 18 hours. Suffice it to say that put quite a load on the shared environment they were hosted in. Well, guess what - the (unrelated) spam attack the site received a few days later actually created more than twice the load on the server that the huge amounts of legitmate traffic did!
Drupal Intranet - Controlling access by role, per node, per user
Posted February 8th, 2007 by Caleb GRecently we had the pleasure of developing a very cool intranet for a group associated with the United Nations. They desired an online space within which they can privately share articles, comments, and files with each other.
Our mission was to make a site that would:
- Not let anonymous users view any content
- Enable varying levels of viewing, adding, and editing rights across differing authenticated user roles - on a per page/node basis
- Enable different/custom menu configurations based upon user role
- Redirect users after a successful login attempt to a front page which is unique to user role
If you have never used Drupal before you may not know that the above functionality is not available out-of-the-box. However, with a little research we found some contributed modules which helped us to achieve a totally customizable intranet:
- front page
- login destination
- menu per role
- nodeaccess
Drupal themes
Posted January 30th, 2007 by Caleb GOne of the greatest things about the Drupal CMS is that it can support *any* look and feel you want it to in a just click of a button. Or at least it can once you have the theme you want designed and "Drupalized".
Themes/designs are a very unique part of a web site, because they they simulataneously are "just" a wrapper for the content on your site - while at the same time being *the* main element which keeps your site from just being a bunch of text splattered on a page (screenshot of this page without an active theme).
Sacramento Web Design
Posted January 30th, 2007 by Caleb GIn addition to the U.S. and international markets which HigherVisibility serves, we also have a non-virtual home in the Sacramento area, which gives us and our clients more opportunities for the kind of personal face time that isn't always an option when communicating thousands of miles away.
So, if you're in the Sacramento area and are looking for world class web design, online community building, blogging tools, or intranet development - all done with the best open source tools available contact us.


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