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Accordingly, one of the most crucial functions performed by the Internet is the routing of traffic ingress nodes to egress nodes. Ultimately, it is the performance of the network as seen by network services that is truly paramount. This crucial function should be considered throughout the development of engineering mechanisms and policies.
Packets that do not meet security policies are not allowed to leave – they are denied "egress". [1] Egress filtering helps ensure that unauthorized or malicious traffic never leaves the internal network. In a corporate network, typical recommendations are that all traffic except that emerging from a select set of servers would be denied egress.
Network ingress filtering is a good neighbor policy that relies on cooperation between ISPs for their mutual benefit. The best current practices for network ingress filtering are documented by the Internet Engineering Task Force in BCP 38 and 84, which are defined by RFC 2827 and RFC 3704, respectively. [4] [5]
802.1X-2001 defines two logical port entities for an authenticated port—the "controlled port" and the "uncontrolled port". The controlled port is manipulated by the 802.1X PAE (Port Access Entity) to allow (in the authorized state) or prevent (in the unauthorized state) network traffic ingress and egress to/from the controlled port.
In computer networking, network traffic control is the process of managing, controlling or reducing the network traffic, particularly Internet bandwidth, e.g. by the network scheduler. [1] It is used by network administrators, to reduce congestion, latency and packet loss. This is part of bandwidth management.
VACLs may be used in similar fashion to a SPAN port or network tap, as a way to replicate computer network data that is coming into and leaving from a computer or a network. This is useful if you want to monitor traffic. Often, this configuration is used to facilitate data loss prevention (DLP) or network-based intrusion prevention systems. [2]
An egress router may be an ingress router or an intermediate router for any other LSP(s). Hence the role of egress and ingress routers is LSP specific. Usually, the MPLS label is attached with an IP packet at the ingress router and removed at the egress router, whereas label swapping is performed on the intermediate routers.
Teletraffic engineering, or telecommunications traffic engineering is the application of transportation traffic engineering theory to telecommunications.Teletraffic engineers use their knowledge of statistics including queuing theory, the nature of traffic, their practical models, their measurements and simulations to make predictions and to plan telecommunication networks such as a telephone ...