Black Box LRA005A-R2, LRS002A-R2, LRA001A-R2 manual 124

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

RARP—Reverseaddress-resolution protocol. Permits a workstation’s logical IP address to be determined by its physical MAC-layer Ethernet or token-ring address. Also known as “reverse address-resolution service.”

remote access—Software allowing a remote PC user to attach any file server on the network as though it were a local node. The servers reside on the host side.

remote client—A software package that enables remote personal computers, laptops, and workstations to dial into a Router and access services on the LAN (attached to that Router).

Remote Office—The current remote client package provided with the Async Router AR-5. Remote office enables your PC to become a remote node on a LAN and access services on that LAN (through the Router).

RFC—Request for comment. A TCP/IP document available from the Network Information Center.

RIP—Routing information protocol. The protocol used by Berkeley 4.3 BSD UNIX systems to exchange routing information among a network of computers. IPX uses a similar protocol of the same name (RIP) to relay routing information. IPX RIP is not compatible with IP RIP.

rlogin—remote login. An alternative to Telnet which provides for direct execution of UNIX commands on a host from the client machine’s command line.

router—An intelligent device linking two networks together using the same network layer protocol. The router reads destination addresses of packets routed to it, and sends packets to local hosts or other routers.

routing table—A table maintained by the router of destinations and other router addresses quantified by metrics.

SAP—Service advertising protocol. Used with IPX, SAP allows nodes that provide services (print and file servers) to advertise to other nodes.

S-Bus—In ISDN basic-rate applications, the S-bus is the 4-wire bus on the user side of the digital subscriber loop, where the user equipment (TEs) is terminated.

SCHAP—Security CHAP for the Async Client is used to support security callback. A modem configured for client access attempts to negotiate CHAP, PAP, then SCHAP verification.

security callback—Only available for use with Async clients, the security callback feature requires a client to be located at a specific phone number, in order to gain access to the Router. First the client dials into the Router and is verified. Next, the Router hangs up the line and calls the client back, at the preconfigured callback phone number. Security callback effectively enables the client to shift the cost of the call, from the client to the Router. It also enhances network security by requiring a client to be located at a specific phone number, in order to gain access to the network.

serial terminal—Input device connected to the console port on the Router interface card used for system administration.

SLIP—Serial-line internet protocol. Allows IP to operate over serial (dial-up) lines. Requires a relatively high- speed (9.6 Kbps or faster) connection.

SMTP—Simplemail-transfer protocol. The Internet standard protocol for transferring electronic-mail messages from one machine to another. SMTP specifies the way in which two mail systems interact and the format of control messages they exchange to transfer mail.

SNMP—Simple network management protocol. A protocol used to manage internetworks.

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