Retina Users Manual
Glossary
Kerberos:
Kerberos is the security system of MIT's Project Athena. It is based on symmetric key cryptography. See
also: Encryption.
L
LAN:
See: Local Area Network
Layer:
Communication networks for computers can be organized as a set of more or less independent protocols,
each in a different layer (also called level). The lowest layer governs direct host-to-host communication between the
hardware on different hosts; the highest consists of user applications. Each layer builds on the layer beneath it. For
each layer, programs on different hosts use protocols appropriate to the layer to communicate with each other.
TCP/IP has five layers of protocols; OSI has seven. The advantages of different layers of protocols is that the
methods of passing information from one layer to another are specified clearly as part of the protocol suite, and
changes within a protocol layer are prevented from affecting the other layers. This greatly simplifies the task of
designing and maintaining communication programs. See also: Open Systems Interconnection and TCP/IP Protocol
Suite.
Listserv:
An automated mailing list distribution system.
Local Area Network (LAN):
A data network intended to serve an area of only a few square kilometers or less.
Because the network is known to cover only a small area, optimizations can be made in the network signal protocols
that permit data rates up to 100Mb/s. See also: Ethernet, Fiber Distributed Data Interface, Token Ring, and Wide Area
Network.
LocalTalk:
Networking protocol used by Macintosh computers to communicate over PhoneNet.
M
MAC Address:
The physical hardware address of a device connected to a shared media.
Mail Gateway:
A machine that connects two or more electronic mail systems (especially dissimilar mail systems on
two different networks) and transfers messages between them. Sometimes the mapping and translation can be quite
complex, and generally it requires a store-and-forward scheme whereby the message is received from one system
completely and goes through suitable translations before it is transmitted to the next system.
Mail Server:
A software program that distributes files or information in response to requests sent via email.
Mailing List:
A list of email addresses, used by a mail exploder, to forward messages to groups of people. Generally,
a mailing list is used to discuss a certain set of topics, and different mailing lists discuss different topics. A mailing list
can be moderated. This means that messages sent to the list are actually sent to a moderator who determines
whether or not to send the messages on to everyone else.
MAN:
Metropolitan Area Network.
Management Information Base (MIB):
The set of parameters an SNMP management station can query or set in the
SNMP agent of a network device (e.g., router). Standard, minimal MIBs have been defined, and vendors often have
Private enterprise MIBs. In theory, any SNMP manager can talk to any SNMP agent with a properly defined MIB. See
also: Client-Server Model and Simple Network Management Protocol.
Maximum Transmission Unit (MTU):
The largest frame length that can be sent on a physical medium. See also:
Fragmentation and Frame.
89
Содержание Retina
Страница 1: ...Users Manual Retina Network Security Scanner...
Страница 5: ...Retina Users Manual Table of Contents Glossary 82 iii...
Страница 8: ...Retina Users Manual Installation 2 Click Next The License Agreement window appears 2...
Страница 30: ...Retina Users Manual Installation 17 Click Finish to exit the Retina Getting Started Wizard 24...
Страница 83: ...Retina Users Manual Retina Audit Wizard 6 The final screen will display 77...
