System Administration Guide: IP Services

Security Parameter Index (SPI)

An integer that specifies the row in the security associations database (SADB) that a receiver should use to decrypt a received packet.

SHA-1 algorithm

Secure Hashing Algorithm. The algorithm operates on any input length less than 2⁶⁴ to produce a message digest. It is input to DSA.

site-local-use address

A designation that is used for addressing on a single site.

SPI

Security Parameters Index. An integer that specifies the row in the SADB that a receiver should use to decrypt a received packet.

standby

A physical interface that is not used to carry data traffic unless some other physical interface has failed.

stateful autoconfiguration

The process of a host obtaining interface addresses, configuration information, and parameters from a server.

stateless autoconfiguration

The process of a host generating its own addresses by using a combination of locally available information and information that is advertised by routers.

symmetric key cryptography

An encryption system in which the sender and receiver of a message share a single, common key that is used to encrypt and decrypt the message. Symmetric keys are used to encrypt the bulk of data transmission in IPsec. DES is one example of a symmetric key system.

Triple-DES

Triple-Data Encryption Standard. A symmetric-key encryption method which provides a key length of 168 bits.

tunnel

The path that is followed by a datagram while it is encapsulated.

tunneling

The mechanism by which IPv6 packets are placed inside IPv4 packets and routed through the IPv4 routers. The term is specific to IPv6 only.

unicast address

An IP address that identifies a single interface.

Virtual Private Network (VPN)

A single, secure, logical network that uses tunnels across a public network such as the Internet.

visited network

A network other than a mobile node's home network, to which the mobile node is currently connected.

visitor list

The list of mobile nodes that are visiting a foreign agent.


	Security Parameter Index (SPI) An integer that specifies the row in the security associations database (SADB) that a receiver should use to decrypt a received packet. SHA-1 algorithm Secure Hashing Algorithm. The algorithm operates on any input length less than 2⁶⁴ to produce a message digest. It is input to DSA. site-local-use address A designation that is used for addressing on a single site. SPI Security Parameters Index. An integer that specifies the row in the SADB that a receiver should use to decrypt a received packet. standby A physical interface that is not used to carry data traffic unless some other physical interface has failed. stateful autoconfiguration The process of a host obtaining interface addresses, configuration information, and parameters from a server. stateless autoconfiguration The process of a host generating its own addresses by using a combination of locally available information and information that is advertised by routers. symmetric key cryptography An encryption system in which the sender and receiver of a message share a single, common key that is used to encrypt and decrypt the message. Symmetric keys are used to encrypt the bulk of data transmission in IPsec. DES is one example of a symmetric key system. Triple-DES Triple-Data Encryption Standard. A symmetric-key encryption method which provides a key length of 168 bits. tunnel The path that is followed by a datagram while it is encapsulated. tunneling The mechanism by which IPv6 packets are placed inside IPv4 packets and routed through the IPv4 routers. The term is specific to IPv6 only. unicast address An IP address that identifies a single interface. Virtual Private Network (VPN) A single, secure, logical network that uses tunnels across a public network such as the Internet. visited network A network other than a mobile node's home network, to which the mobile node is currently connected. visitor list The list of mobile nodes that are visiting a foreign agent.