KnockOnD 1.5

KnockOnD is a straightforward port knocking client that seamlessly works with knockd or any other port knocking server. It provides compatibility with both UDP and TCP protocols, offering interpacket delays for enhanced customization. The tool proves to be user-friendly, ensuring straightforward configuration and operation.

Port knocking serves as a technique for remotely unlocking ports on a firewall by initiating connection attempts to a predetermined sequence of closed ports. Upon receiving the correct order of connection attempts, the firewall configurations are dynamically adjusted to grant access to the originating host over specific port(s). For an in-depth explanation, you can refer to http://www.portknocking.org/.

With KnockOnD, users have the flexibility to specify the destination host, set packet delay times (in milliseconds), and designate the port numbers to be accessed as a "sequence." These saved sequences can be readily accessed for executing the knocking process.