FIGURE 5.2 IP standard access list example 2
Before we move on to restricting Telnet access on a router, let’s take a look at one more standard access list example, but it will require some thought. In Figure 5.3 you have a router with four LAN connections and one WAN connection to the Internet.
You need to write an access list that will stop access from each of the four LANs shown in the diagram to the Internet. Each of the LANs shows a single host’s IP address, and from that you need to determine the subnet and use wildcards to configure the access list.
Here is an example of what your answer should look like (starting with the network on E0 and working through to E3):