ISP (Internet service provider) Definition

ISP (Internet service provider) Definition An ISP (Internet service provider) is a company that provides individuals and other companies access to the Internet and other related services such as Web site building and virtual hosting. An ISP has the equipment and the telecommunication line access required to have a point-of-presence on the Internet for the geographic area served. The larger ISPs have their own high-speed leased lines so that they are less dependent on the telecommunication p...
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Ingress Filtering

Ingress Filtering Ingress filtering is a method used by enterprises and internet service providers (ISPs) to prevent suspicious traffic from entering a network. When configured on an edge device such as a router or firewall, ingress filtering examines all inbound packets and then permits or denies entry to the network based on information in the packet header. It is a form of packet filtering. Ingress traffic filtering is one of the first lines of defense in a network security strategy. It i...
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