Glossary of TermsGlossary of Terms 483CCAThe Certificate Authority (CA) issuescertificates to entities such as gateways, users, orcomputers. The entity later uses the certificate toidentify itself and provide verifiableinformation. For instance, the certificateincludes the Distinguished Name (DN)(identifying information) of the entity, as well asthe public key (information about itself), andpossibly the IP address.After two entities exchange and validate eachother's certificates, they can begin encryptinginformation between themselves using thepublic keys in the certificates.Cable ModemA device connecting a computer to the Internetvia the cable television network. Cable modemsoffer a high-speed 'always-on' connection.Certificate AuthorityThe Certificate Authority (CA) issuescertificates to entities such as gateways, users, orcomputers. The entity later uses the certificate toidentify itself and provide verifiableinformation. For instance, the certificateincludes the Distinguished Name (DN)(identifying information) of the entity, as well asthe public key (information about itself), andpossibly the IP address.After two entities exchange and validate eachother's certificates, they can begin encryptinginformation between themselves using thepublic keys in the certificates.CrackingAn activity in which someone breaks intosomeone else's computer system, bypassespasswords or licenses in computer programs; orin other ways intentionally breaches computersecurity. The end result is that whatever resideson the computer can be viewed and sensitivedata can be stolen without anyone knowingabout it. Sometimes, tiny programs are 'planted'on the computer that are designed to watch outfor, seize and then transmit to another computer,specific types of data.DDHCPAny machine requires a unique IP address toconnect to the Internet using Internet Protocol.Dynamic Host Configuration Protocol (DHCP)is a communications protocol that assignsInternet Protocol (IP) addresses to computers onthe network.DHCP uses the concept of a "lease" or amountof time that a given IP address will be valid for acomputer.DMZA DMZ (demilitarized zone) is an internalnetwork defined in addition to the LAN networkand protected by the IP60 appliance.DNSThe Domain Name System (DNS) refers to theInternet domain names, or easy-to-remember"handles", that are translated into IP addresses.An example of a Domain Name is'www.sofaware.com'.Domain Name SystemDomain Name System. The Domain NameSystem (DNS) refers to the Internet domainnames, or easy-to-remember "handles", that aretranslated into IP addresses.An example of a Domain Name is'www.sofaware.com'.EExposed HostAn exposed host allows one computer to beexposed to the Internet. An example of using anexposed host would be exposing a public server,while preventing outside users from gettingGlossary of Terms
