Installation guide

Glossary 69
secure. Supported on many AlterPath products. In tunnel mode, IPSec is used
to form a VPN connection, creating a secure tunnel between either an
individual host or a subnet on one end and the AlterPath device on the other
end. Has two modes, transport and tunnel mode. Tunnel mode encrypts the
entire packet. Transport mode encrypts application headers, TCP or UDP
headers, and packet data, but not the IP header. The method that encrypts the
entire packet cannot be used where NAT is required
Kerberos
Network authentication protocol designed to provide strong authentication for
client/server applications by using secret-key cryptography.
KVM
Remote keyboard, video [monitor], and mouse access to a server through a
PS/2 or USB connection on a server that is connected to a KVM switch.
KVM analog switch
A KVM switch that requires a local user connection before a user can gain
access to any servers that are connected to the switch. Cyclades AlterPath
KVM analog switches are one component of the out-of-band infrastructure.
KVM over IP switch
A KVM switch that supports remote access over a LAN or WAN or telephone
line to servers connected to the switch, using the TCP/IP protocols and a web
browser. Enables operations over long distances. Cyclades AlterPath KVM/IP
switches are one component of the out-of-band infrastructure.
KVM switch
Enables use of only one keyboard, video monitor, and mouse to run multiple
servers from a remote location. Reduces expenses by eliminating the cost of
acquiring, powering, cabling, cooling, managing, and finding data-center
space for one keyboard, monitor, and mouse for every server. Servers are
connected to KVM ports on Cyclades AlterPath KVM switches using
AlterPath KVM terminators on the server end and up to 500 feet of CAT5 or
greater cable. AlterPath KVM switches provide authentication and other
security features and allow only authorized users to access a restricted set of
connected servers. See also KVM analog switch and KVM over IP switch.