Secure Computing sidewinder, Startup Manual

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Glossary
48
external DNS External DNS provides a limited external view of the organizational domain.
No internal information is available to the external DNS and only the external
DNS can communicate with the outside. Therefore, no internal naming
information can be obtained by anyone on the outside. The external DNS
cannot query the internal DNS or any other DNS server inside a Sidewinder
appliance
.
failover See High Availability .
failure mode Also known as safe mode, a Sidewinder
appliance
operating state that allows
system administration while not allowing network traffic to pass through. A
Sidewinder
appliance
can enter this mode under conditions that include: (a)
after a failed license check, (b) after a reboot during which the system detects
a problem with an installed patch, (c) after a reboot during which the system
failed to start a critical service, or (d) after the audit partition has overflowed.
File Editor The program available directly in the Admin Console that can be used to
create or modify text files. The File Editor communicates with the Sidewinder
appliance using a secured connection.
firewall ID The ID by which you choose to identify your Sidewinder appliance . The firewall
ID is used when activating your Sidewinder appliance.
FreeBSD The operation system used as a base for developing SecureOS. See also
SecureOS
gateway A network component used to connect two or more networks that may use
dissimilar protocols and data transmission media.
High Availability (HA) A feature that allows a second Sidewinder to be configured either in a load
sharing capacity or in “hot backup" (secondary or standby) mode.
host Any computer connected to a network, for example, a workstation, router,
firewall, or server.
ICANN (Internet
Corporation for Assigned
Names and Numbers) An organization that oversees IP addresses and domain names on the
Internet. The goal of ICANN is to ensure that all public IP addresses are
unique and that valid addresses are accessible to all Internet users.
internal DNS Manages information only available to internal machines. The internal name
server cannot receive queries from external hosts since it cannot
communicate directly with the external network. Although it is unable to
communicate directly with external hosts, it is able to send queries and
receive the responses via the external DNS.
Internet A collection of private and government computer networks that are united by
their use of TCP/IP standards.
IP address A 32-bit address assigned to TCP/IP network devices. An IP address is
unique to each machine on the Internet.