A Cisco IOS Access Control list (ACL) is used to define traffic. Once that “interesting” traffic is defined, some action can then be taken on that traffic.
Logging messages about packets permitted or denied by an IP access list is also available in Cisco IOS.
Logging-enabled ACLs provide insight into traffic as it traverses the network [...]
We can use VLAN ACL (also called VLAN map) to provide packet filtering for all types of traffic that are bridged within a VLAN or routed into or out of the VLAN. Unlike Router ACL, VACL is not defined by a direction (input or output). When you configure a VACL and apply it to a [...]
Sometime you may like to limit only certain IP address to access your Cisco router / switch by using telnet. You may implement it by configuring the access list and apply it to the line vty 0 4 line.
It is good to have CCNA credential if you would like to work as a network engineer. It shows that you have the basic foundation in the area of networking especially in the field of Cisco networking. Frankly, it would be easier when you are marketing yourself for a new IT job if you have [...]