By default, the communication protocol used between the DualShield computer logon client and agent is TCP (the port used by the logon agent is TCP 12841). If you set up the DualShield Computer Logon system for on-site logins only, then TCP is appropriate as both the logon clients and agents are deployed within the corporate network. However, if you plan to implement the DualShield Computer Logon system for offsite logins, then you might want to use the HTTPS protocol. 

To use the HTTPS protocols, you need to install an addon called Chisel (the port used by the Chisel addon is HTTPS 12843).

The Chisel addon needs to be installed on both ends, on the computer logon agent machine and the computer logon client machine. 

There are two installation files that you need to download from https://support.deepnetsecurity.com/visit.asp?pg=download/dualshield

The "computer-logon-chisel-agent-addon-installer" is for the logon agent. It needs to be installed on the same machine you have installed the Computer Logon Agent.

The "windows-computer-logon-chisel-client-addon-installer" is for the logon client. It needs to be installed on all the machines which are protected by the Computer Logon Client.