If a resource is attempting unauthorised accessibility within just your community and you wish to stop it devoid of blocking all targeted visitors amongst The 2 IP addresses, you'll get the job done to limit access only concerning the specified ports.
It could identify the categories of site visitors it lets or blocks over and above just the IP tackle to include TCP, ICMP, and UDP, as an example. An extended ACL can filter site visitors determined by the following:
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Improved community functionality − Extended access lists can improve community general performance by cutting down network congestion and preventing unnecessary traffic from traversing network.
A standard ACL will allow or denies targeted visitors obtain based upon the supply IP address, though an extended access Command list can filter packets with an increased degree of specification.
Intrusion detection and avoidance: Extended access lists can be utilized at the side of intrusion detection and prevention techniques to block targeted traffic from recognised malicious IP addresses or avert accordion door installation near me precise kinds of attacks.
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