• PPP (Point-to-Point Protocol) must be used; no other authentication methods are supported.
• TCP/IP must be installed/enabled on the computer making the connection, and must be used
for the dial-up connection.
• The connection must be configured to obtain a dynamic IP address.
• The user name/password must match a user currently configured on the Digital KVM via IP.
• For best performance and to simplify the troubleshooting process, firewall software should not
be used with the dial-up connection.
λ Accessing the Web Interface
Once a dial-up connection has been established, you can access the Web interface or start a VNC
session using the following IP address:
https://99.99.99.99
You can now login to the Web interface (and/or VNC session) normally. Note that the remote machine
(the one you dialed from) is automatically assigned the IP address 99.99.99.100 for the PPP session.
This, and the IP address of the Digital KVM via IP, cannot be modified. The following TCP/IP port
numbers are assigned for a PPP connection, regardless of the settings configured in the Web
interface for the LAN port:
HTTPS: 443
VNC (clear-text): 5900
VNC (SSL secured): 15900
SSH: 22
λ Performance Notes
• All images over the PPP connection will be grayscale to conserve bandwidth. If other users
are connected while a PPP session is active, their screens will be in grayscale as well. When
PPP in inactive, color is automatically re-enabled.
• Some areas of the screen may not be updated as frequently as others, and animations or
other auto-updating areas of the screen may appear out-of-focus or “blocky” as a result. Since
the area around the mouse pointer is refreshed most frequently, hold the pointer over an area
to improve its clarity.
• It may be beneficial to minimize any unnecessary icons, backgrounds, or other clutter on the
managed computer’s desktop to make the dial-up connection as efficient as possible.
• You will need to disable the modem feature and re-connect the serial port on the Digital KVM
via IP to the port on a managed computer to use serial configuration.
λ Troubleshooting Guide
The following messages will appear in the system log on the Status screen in the Web interface and
may help to diagnose problems with the modem configuration.
Starting PPP (for auth) on port…
Modem is connecting and the PPP login process is starting.
Modem hang up. Resetting
The connection has been closed or terminated unexpectedly.
Timeout during login process. Giving up
The PPP client connecting over the modem has waited too long to complete the authentication
process or supplied an invalid user name and/or password.
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