TMS zl Management and Configuration Guide ST.1.1.100430

B-12
Glossary
G
gain access A signature family for attacks wherein the attacker attempts to gain access to
your network.
gateway The network node that provides access to other networks or subnets.
global maximum
connections
The cumulative maximum number of connections allowed for all zones.
global trusted
certificate
A digital certificate that is created by a trusted CA. Also known as a root
certificate.
GRE Generic Routing Encapsulation. A protocol that sends multicast or non-IP
packets through a tunnel on IP networks.
GRE over IPsec A method for securing GRE tunnels with IPsec for traffic that requires data
integrity or data privacy.
GRE tunnel A tunnel that is created by GRE which establishes a virtual point-to-point
connection between two devices across an intervening network.
guest user group A local user group designated for guest access.
H
HA High Availability. The provision of nearly constant services or connectivity.
It is achieved through redundancy and hot failover.
HA cluster Two TMS zl Modules that are configured for HA.
HA control
protocol
A Layer 2 protocol to manage data flow, such as number of sessions per
module, between the master and the participant in an HA cluster.
HA data protocol A Layer 2 protocol to send data from the cluster master to the participant. All
data from the master to the participant is encapsulated through the HA data
protocol. The master sends data to the MAC address of the participant.
HA port In routing mode, physical port 2 (J2 on the circuit board), which plugs into the
host switch backplane. This port is an untagged member of the HA VLAN.
hardware ID A unique identification number that is used to obtain a license key.
hash algorithm On the TMS zl Module, the hash algorithm is called the authentication algorithm.
hello interval The amount of time that determines how often an OSPF router advertises its
routes.