Circuit-Level Gateway

Circuit-Level Gateway

A circuit-level gateway is a type of firewall.

Circuit level gateways work at the session layer of the OSI model, or as a "shim-layer" between the application layer and the transport layer of the TCP/IP stack. They monitor TCP handshaking between packets to determine whether a requested session is legitimate. Information passed to a remote computer through a circuit level gateway appears to have originated from the gateway. This is useful for hiding information about protected networks. Circuit level gateways are relatively inexpensive and have the advantage of hiding information about the private network they protect. On the other hand, they do not filter individual packets.

External links

* http://www.dmccormick.org/firewalls.htm
* http://netsecurity.about.com/cs/generalsecurity/g/def_circgw.htm
* http://www.codepedia.com/1/Circuit-level+gateway
* http://www.softheap.com/internet/circuit-level-gateway.html
* http://www.pcstats.com/articleview.cfm?articleid=1450&page=5
* http://csrc.nist.gov/publications/nistpubs/800-10/node53.html


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Circuit Level Gateway — Circuit Level Gateway,   Firewall …   Universal-Lexikon

  • Circuit-level gateway — A circuit level gateway is a type of firewall. Circuit level gateways work at the session layer of the OSI model, or as a shim layer between the application layer and the transport layer of the TCP/IP stack. They monitor TCP handshaking between… …   Wikipedia

  • Gateway Tour — The Gateway Tour is a third level men s professional golf tour headquartered in Phoenix, Arizona that runs tournaments in Arizona and Florida. The top level of men s professional golf in the United States is the PGA Tour and the second level is… …   Wikipedia

  • Gateway AnyKey — The Gateway AnyKey is a programmable PC keyboard that was sold with desktop computers from the Gateway 2000 company roughly from 1990 to 1995. It was manufactured in at least five known versions and incarnations by Tucson, Arizona based Maxi… …   Wikipedia

  • Application Gateway — 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

  • Internet security — is a branch of computer security[1] specifically related to the Internet. Its objective is to establish rules and measures to use against attacks over the Internet.[2] The Internet represents an insecure channel for exchanging information leading …   Wikipedia

  • Firewall (computing) — This article is about the network security device. For other uses, see Firewall. An illustration of where a firewall would be located in a network …   Wikipedia

  • Check Point Abra — Check Point GO is a USB drive that combines an encrypted USB flash drive with virtualization, VPN and computer security technologies to turn a PC into a secure corporate desktop. By plugging Check Point GO into the USB port of a Microsoft… …   Wikipedia

  • Messaging Security — is a program that provides protection for companies messaging infrastructure. The programs includes IP reputation based anti spam, pattern based anti spam, administrator defined block/allow lists, mail antivirus, zero hour malware detection and… …   Wikipedia

  • Offener Proxy — Ein Proxy (von engl. „proxy representative“ = Stellvertreter, bzw. lat. „proximus“ = der Nächste) arbeitet als Vermittler, der auf der einen Seite Anfragen entgegennimmt, um dann über seine eigene Adresse eine Verbindung zur anderen Seite… …   Deutsch Wikipedia

Share the article and excerpts

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