packet-level filter

packet-level filter
   A category of firewall that provides a high degree of convenience, but a relatively low level of security. A packet-level filter blocks or forwards a packet solely on its merits, without taking into account past history; the filter may also look at the source and destination address information contained in the packet.
   This kind of filter is easy to implement, has little effect on network operations, but can be bypassed by encapsulating a blocked protocol within an allowed protocol.

Dictionary of networking . 2014.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • application-level filter —    A category of firewall that provides a high degree of security but at the cost of lower speed and greater complexity. Typical application level filters can provide proxy services for applications and protocols such as Telnet, FTP, HTTP, and… …   Dictionary of networking

  • packet filtering —    A process used by bridges to limit protocol specific traffic to one segment of the network, to isolate e mail domains, and to perform other traffic control functions. The network administrator sets the packet filtering specifications for each… …   Dictionary of networking

  • stateless filter —    See packet level filter …   Dictionary of networking

  • Content-filter — Eine externe (Netzwerk oder Hardware ) Firewall (von engl. firewall [ˈfaɪəwɔːl] „die Brandwand“) stellt eine kontrollierte Verbindung zwischen zwei Netzen her. Das könnten z. B. ein privates Netz (LAN) und das Internet (WAN) sein; möglich ist… …   Deutsch Wikipedia

  • Deep packet inspection — (DPI) (also called complete packet inspection and Information eXtraction IX ) is a form of computer network packet filtering that examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for… …   Wikipedia

  • Bloom filter — The Bloom filter, conceived by Burton H. Bloom in 1970, is a space efficient probabilistic data structure that is used to test whether an element is a member of a set. False positives are possible, but false negatives are not. Elements can be… …   Wikipedia

  • Application-level gateway — In the context of computer networking, an application level gateway [RFC 2663 ALG: official definition (refer section 2.9)] (also known as ALG or application layer gateway) consists of a security component that augments a firewall or NAT employed …   Wikipedia

  • firewall —    A barrier established in hardware or in software, or sometimes in both, that monitors and controls the flow of traffic between two networks, usually a private LAN and the Internet.    A firewall provides a single point of entry where security… …   Dictionary of networking

  • Proxy server — For Wikipedia s policy on editing from open proxies, please see Wikipedia:Open proxies. Communication between two computers (shown in grey) connected through a third computer (shown in red) acting as a proxy. In …   Wikipedia

  • Stateful firewall — In computing, a stateful firewall (any firewall that performs stateful packet inspection (SPI) or stateful inspection) is a firewall that keeps track of the state of network connections (such as TCP streams, UDP communication) traveling across it …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”