The purpose for setting ACLs on a router are controlling vty access into a router and filtering traffic as it passed through a router.
Access Control List (ACL) can be used to affect traffic transmited from one port to another. It acquired its name due to having filtering capability when traffic flows in and out of interface and it also can be used for other purposes, such as :
A. Place restrictions on accessing router Telnet (VTY).
B. Filter routing information.
C. Distinguish precedence of WAN traffic by queuing technology.
D. Tringger calls through the Dial-on-demand routing (DDR).
E. Change administrative distance of routing
Tips and Trik CCNA
Tips and Trik CCNA
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