User talk:Nilima.bokaro

ACL(Access control list)
ACL manages the traffic by filltering packets passing through router. how it works: Network designer can implement network based security solutions to protect the network from unauthorized used. Firewalls are the hardware and software solution that enforce the network security system. Firewalls prevents unauthorized or potentially dangerous packet from entering the network. firewall may come in different types. It may be 1) Packet filter 2) Application layer gateways and stateful inspection firewalls But in certain cases basic packet filtering is neccessary where firewall do not tends to operate(within the network). In such situation devices like router can provide basic traffic filtering capabilities using ACL.

Defination: ACL are versatile tool used by network administratorand supported by all cisco rouuter. An ACL is a router configuration script that controls whether a router permitss packets to passed based on certain criteria that are formed in the packet header.