Appendices 317
Authorization is the process of granting or denying access to a resource. Most computer
security systems are based on a two-step process. The first stage is authentication, which
ensures that users are who they claim to be. The second stage is authorization, which allows
the user access to various resources based on the user's identity.
AVSP (Avocent Video Session Protocol)
A protocol used to transfer keyboard, video and mouse information between a DS1800 digital
switch or DSR switch and a remote Video Viewer. AVSP operates over SSL encrypted TCP
links. TCP/IP ports 8192 and 2068 are used by default, but may be configured to different
port numbers.
Browser session
A type of target device session in which the target device contains a web server. The DSView
software client connects directly to the target device using a web browser. No DS1800 digital
switches, DSI5100, CPS or CCM appliances or DSR switches are used for browser sessions.
Cascade device
A device that connects between a DS1800 digital switch, DSR switch, CPS appliance or CCM
appliance and a target device, or connects to a DS1800 digital switch, DSR switch, CPS
appliance or CCM appliance and is not, in itself, a target device. Examples of cascade devices
include a cascade switch and an SPC power control device.
Cascade switch
A cascade switch is an analog KVM switch connected to a DS1800 digital switch or DSR
switch port or DSRIQ module. A cascade switch expands the number of connections allowed
on a DS1800 digital switch or DSR switch if the switch supports the cascade protocol.
CCM appliance
A CCM appliance is an Avocent managed appliance that provides a Telnet server for accessing
serially attached devices over a standard TCP/IP connection. Model numbers include the
CCM850, CCM1650 and CCM4850 appliances.
Certificate authentication
Certificate authentication is the process of authenticating with a digital certificate.
CPS appliance
A CPS appliance is an Avocent managed appliance that provides a Telnet server for accessing
serially attached devices over a standard TCP/IP connection. Model numbers include the
CPS810 and CPS1610 appliances.
Database replication
Database replication is the process of distributing and keeping in sync the same database to all
DSView software servers in a DSView software system. Database replication ensures that all
database changes made at the hub server or spoke servers are replicated to all DSView
software servers in the DSView software system.
The DSView management software versions of the spoke server and hub server must match in
order to register the spoke server. For example, you may not register a spoke server running
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