Configuration of Firewall using ACL on a Router
Configuration of ACL on a Router to act like a Firewall:
#firewall
#ExtendedACL
#StandardACL
#ACL
#AccessList
#AccessGroup
#HowToConfigureFirewallusingACL
Firewall: A #firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Firewalls have been a first line of defense in network security for over 25 years
Access-list: #Access-list (ACL) is a set of rules defined for controlling the network traffic and reducing network attack. #ACLs are used to filter traffic based on the set of rules defined for the incoming or out going of the network.
Type of ACL:
1. #Standard Access-list – These are the Access-list which are made using the source IP address only. These ACLs permit or deny the entire protocol suite. They don’t distinguish between the IP traffic such as TCP, UDP, Https etc.
2.#Extended ACLs can be named, but standard ACLs cannot. Unlike standard ACLs, extended ACLS can be applied in the inbound or outbound direction. Based on payload content, an extended ACL can filter packets, such as information in an e-mail or instant message
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