System information

Host Operation
If you check Use Encryption, data exchanged over remote control connections are
protected with an encryption algorithm negotiated with the client (see the “Selecting
ciphers” for more information about encryption).
NOTE: PC-Duo Host can be installed on a computer that is also running PC-Duo
Gateway. Both programs can have the IP protocol enabled, because they use different
UDP ports (Host uses 1505, Gateway uses 2303). However, the two programs must
compete for a single IPX port. Either disable (uncheck) IPX on the Protocols tab of PC-
Duo Host, or choose an alternate port (other than Standard) for IPX in either the PC-Duo
Host or PC-Duo Gateway.
Select ciphers
When PC-Duo Master or PC-Duo Gateway requests a connection to PC-Duo Host, the
two applications negotiate to determine the highest level of encryption that is supported
by both. For example, PC-Duo Master 11.2 will try to use AES 256-bit encryption by
default but a PC-Duo Host 5.20 might be configured to use Triple-DES; in that case, the
two applications will agree to use Triple DES).
NOTE: Older PC-Duo Host versions up to 5.10 support only RC4. Newer versions
starting with 5.20 support Triple-DES and AES.
The Select Ciphers window lists the encryption ciphers that are supported by the Host in
decreasing order of preference. In the default configuration, this order always begins with
AES encryption with 256-bit keys.
Specific configurations can be disabled by moving them below the “DISABLED” line; in
that case, they will never be considered by the Host:
 To enable a cipher option, select it from the DISABLED list and move it to the
ENABLED list by clicking Up.
 To disable a cipher option, select it from the ENABLED list and move it to the
DISABLED list by clicking Down.