Black Box LRA005A-R2 - Manual (Page 121)

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER USER’S MANUAL
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client access shift—The interval of time a Router allows remote clients to access the LAN attached to the
Router. Client access to the Router (and the LAN) is configured relative to the client access shift: access
IN (during) the client access shift, access OUT (not during) of the client access shift, and access BOTH
in and out (all day) of the client access shift.
client database—The Router client database can store information for a maximum of 100 clients. The
client database is manipulated by the client command. The database includes: client name, client
password, callback phone number, time filter, connect quota, and idle timeout.
connect quota—Each client may have a per-day time quota placed on its access to the network. The per-
day usage is not stored in the user database; thus any accumulated usage will be reset to zero if the
Router is rebooted. The current dial-out quota is accumulated only on clients configured for security
callback. Once a quota has been reached, a syslog message is generated to provide an audit trail of user
activity.
CSLIP—Compressed SLIP. A variation of SLIP where the IP header information is compressed.
CSU/DSU—Channel service unit/data service unit, also known as a digital modem. CSU/DSUs are used to
connect the Router (and similar devices) to leased lines such as Digital Data Service (DDS) or Switched-
56 service.
cycle power—To turn the Router (or other device) off, and then on.
daemon—A UNIX service process analogous to a NetWare NLM or a DOS TSR.
domain—A part of the naming hierarchy of the Internet. A domain consists of a sequence of names or
labels separated by periods, referred to as “dots.”
DNS—Domain naming system. Provides a mechanism for naming resources in such a way that the names
are usable in different hosts, networks, protocol families, internets and administrative organizations.
DOS—Disk operating system. The operating system used on IBM PCs and clones.
dotted-quad notation—Format for representing a 32-bit IP address consisting of four 8-bit decimal
numbers separated by periods.
DTE—Data terminal equipment. Normally refers to a console.
dual-stack functionality—Multiple protocols operating on the same client.
dynamic routing—When a client connects or disconnects, the Router adds or deletes a route to the
appropriate routing table. For IPX, this allows the route to propagate to other connected networks,
when RIP and SAP updates are transmitted. For IP, this will allow clients to communicate to networks
through other interfaces.
email—Electronic messages sent between two computers on a LAN or Internet-connected network.
Ethernet—A LAN protocol and physical connection. Connection media may be coaxial or twisted-pair
cable.
FTP—File-transfer protocol, used for transferring files between TCP/IP machines. Also known as “ftp.”
gopher—A first-generation service designed to hyperlink various Internet service offerings, regardless of
their physical location.
hop count—A unit of measure typically equal to traversing a router. Hops are the number of routers
between transmitting and receiving host.