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- Q1128692 subject Q6160030.
- Q1128692 subject Q6468992.
- Q1128692 subject Q7455237.
- Q1128692 subject Q7462967.
- Q1128692 subject Q8797042.
- Q1128692 abstract "Context-based access control (CBAC) is a feature of firewall software which intelligently filters TCP and UDP packets based on application layer protocol session information. It can be used for intranets, extranets and internets.CBAC can be configured to permit specified TCP and UDP traffic through a firewall only when the connection is initiated from within the network needing protection. (In other words, CBAC can inspect traffic for sessions that originate from the external network.) However, while this example discusses inspecting traffic for sessions that originate from the external network, CBAC can inspect traffic for sessions that originate from either side of the firewall. This is the basic function of a stateful inspection firewall.Without CBAC, traffic filtering is limited to access list implementations that examine packets at the network layer, or at most, the transport layer. However, CBAC examines not only network layer and transport layer information but also examines the application-layer protocol information (such as FTP connection information) to learn about the state of the TCP or UDP session. This allows support of protocols that involve multiple channels created as a result of negotiations in the FTP control channel. Most of the multimedia protocols as well as some other protocols (such as FTP, RPC, and SQL*Net) involve multiple control channels.CBAC inspects traffic that travels through the firewall to discover and manage state information for TCP and UDP sessions. This state information is used to create temporary openings in the firewall's access lists to allow return traffic and additional data connections for permissible sessions (sessions that originated from within the protected internal network).CBAC does the deep packet inspection and hence it is termed to be an IOS Firewall.CBAC also provides the following benefits: Denial-of-Service prevention and detection Real-time alerts and audit trails".
- Q1128692 wikiPageWikiLink Q11163.
- Q1128692 wikiPageWikiLink Q131406.
- Q1128692 wikiPageWikiLink Q1702839.
- Q1128692 wikiPageWikiLink Q1784206.
- Q1128692 wikiPageWikiLink Q189768.
- Q1128692 wikiPageWikiLink Q208074.
- Q1128692 wikiPageWikiLink Q209372.
- Q1128692 wikiPageWikiLink Q338966.
- Q1128692 wikiPageWikiLink Q42283.
- Q1128692 wikiPageWikiLink Q6160030.
- Q1128692 wikiPageWikiLink Q6468992.
- Q1128692 wikiPageWikiLink Q734252.
- Q1128692 wikiPageWikiLink Q7360635.
- Q1128692 wikiPageWikiLink Q7455237.
- Q1128692 wikiPageWikiLink Q7462967.
- Q1128692 wikiPageWikiLink Q80998.
- Q1128692 wikiPageWikiLink Q8797042.
- Q1128692 wikiPageWikiLink Q8803.
- Q1128692 comment "Context-based access control (CBAC) is a feature of firewall software which intelligently filters TCP and UDP packets based on application layer protocol session information. It can be used for intranets, extranets and internets.CBAC can be configured to permit specified TCP and UDP traffic through a firewall only when the connection is initiated from within the network needing protection.".
- Q1128692 label "Context-based access control".