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Reference Guide 163

secret key

Either the private key in public key (asymmetric) algorithms or

the session key in symmetric algorithms.

secret sharing

See key splitting.

secure channel

A means of conveying information from one entity to another

such that an intruder does not have the ability to reorder, delete,

insert, or read.

Secure Sockets Layer (SSL)

A protocol for transmitting private documents over the Internet.

SSL works by using a private key to encrypt data transferred over

an SSL connection.

SecurID server

Each time an end user connects to the specialized-HTTP server

running on the Firebox on port 4100, a Java-enabled applet opens

and prompts for the username, password, and whether or not to

use SecurID (PAP) Authentication. The username and password

are DES-encrypted using a secret key shared between the Java

client and the Firebox. The Firebox then decrypts the name and

password to create a RADIUS PAP Access-Request packet, and

then sends it to the configured RADIUS server.

Security Triangle Display

An LED indicator on the front of a Firebox that indicates the

directions of traffic between the three Firebox interfaces.

seed router

A router that supplies routing information (such as network

numbers and ranges) to the network.

segment

One or more nodes in a network. Segments are connected to

subnets by hubs and repeaters.

self-extracting file

A compressed file that automatically decompresses when double-

clicked.

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