webknocking

Webknocking is a secure software inspired by portknocking but differs in its use of webpages instead of ports. One of its greatest advantages is that it eliminates the need for a special client or daemon. The software has implemented a unique "question-answer-game" feature which offers stronger protection against sniffers, making it more secure than the simple knocking-idea.

The installation and configuration of Webknocking are very simple and user-friendly. It offers great ease of use as there is no need of a special knocking-client. Additionally, the software has no additional overhead because of no daemon. Therefore, it is a lightweight solution for secure knocking.

This software is available under GPL and offers a range of key features including more security with the "question-answer-game." In this release, it is now possible to disable the close-opened-port-on-next-call-feature.

Webknocking requires running apache with PHP and tcsh (which will be changed in the next version to the standard-shell (sh)). It also requires ipfw. Overall, Webknocking is highly reliable and suitable for those looking for secure web knock control.