Access List Applications Permit or deny packets moving through the router. Permit or deny vty access to or from the router. Without access lists, all
{"Image DocumentName": "Access List Applications", "Image ImageDescription": "Transmission of Packets on an Interface. Virtual Terminal Line Access (IP) Purpose: This figure illustrates common uses for IP access lists. Emphasize: While this chapter focuses on IP access lists, the concept of access lists as mechanisms to control traffic in a network applies to all protocols. Note: An improved security solution is the lock-and-key access feature, which is available only with IP extended access lists. Lock-and-key access allows you to set up dynamic access lists that grant access per user to a specific source/destination host through a user authentication process. You can allow user access through a firewall dynamically, without compromising security restrictions. Transition: The following figure is the first of a three-layer build that presents other uses of access lists specific to Cisco IOS\u2122 features. Permit or deny packets moving through the router. Permit or deny vty access to or from the router. Without access lists, all packets could be transmitted onto all parts of your network.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}