Black Box LRA005A-R2, LRS002A-R2, LRA001A-R2 manual 121

ASYNC ROUTER AR-P, AR-5, AND SYNC ROUTER USER’S MANUAL

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-quadnotation—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-stackfunctionality—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.

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