System information

PC-Duo Master Guide

PC-Duo Gateway also features screen recording for any Host in contact with a Gateway,

whether or not there is an active remote support connection. With this feature, PC-Duo

Master users can keep a visual log of activities going on in the network.

Encryption

To ensure privacy of communications between PC-Duo applications across the network,

PC-Duo provides advanced encryption using Advanced Encryption Standard (AES) block

ciphers and Secure Hashing Algorithm (SHA-1). This protection will be automatic and

transparent every time two PC-Duo 11.0 components or later are communicating with

each other.

By default, PC-Duo Express and PC-Duo Enterprise uses AES 256-bit encryption,

however other encryption options can be set, including:

 AES encryption (256-bit key) with SHA1 hash

 AES encryption (192-bit key) with SHA1 hash

 AES encryption (128-bit key) with SHA1 hash

 Triple-DES (3DES) encryption (192-bit key) with SHA1 hash

 RC4-compatible encryption (128-bit key) with MD5 hash

NOTE: PC-Duo 10.0 applications and older support only RC4 encryption; thus, this would be the

encrpytion option negotiated between a PC-Duo 11.0 or later application (e.g. PC-Duo Master) and

PC-Duo 10.0 application (e.g. PC-Duo Host).

Order of precedence

When two PC-Duo components have different encryption options set, the first encryption

choice in common between the two is used (going down the list in order), with preference

set as follows:

 Preference set by the Host, when the Gateway requests connection to the Host

 Preference set by the Gateway, when the Master requests connection to a Host

through the Gateway