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Intrusion Prevention

ALSO CALLED: Network Intrusion Prevention, Host Intrusion Prevention, Intrusion Protection, and Network Intrusion Management
DEFINITION: Intrusion prevention is a preemptive approach to network security used to identify potential threats and respond to them swiftly. Like an intrusion detection system (IDS), an intrusion prevention system (IPS) monitors network traffic. However, because an exploit may be carried  … 
Definition continues below.


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INTRUSION PREVENTION DEFINITION (continued): …  out very quickly after the attacker gains access, intrusion prevention systems also have the ability to take immediate action, based on a set of rules established by the network administrator. For example, an IPS might drop a packet that it determines to be malicious and block all further traffic from that IP address or port. Legitimate traffic, meanwhile, should be forwarded to the recipient with no apparent disruption or delay of service.

According to … 
Intrusion Prevention definition sponsored by SearchSecurity.com, powered by WhatIs.com an online computer dictionary



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