ip address 10.2.1.100 255.255.255.0ip access-group nimule inno shutdownDell(conf-if)#To filter traffic on Telnet sessions, use only standard ACLs in the access-class command.Counting ACL HitsYou can view the number of packets matching the ACL by using the count option when creating ACLentries.1. Create an ACL that uses rules with the count option. Refer to Configure a Standard IP ACL Filter.2. Apply the ACL as an inbound or outbound ACL on an interface.3. show ip accounting access-listEXEC Privilege modeView the number of packets matching the ACL.Configure Ingress ACLsIngress ACLs are applied to interfaces and to traffic entering the system.These system-wide ACLs eliminate the need to apply ACLs onto each interface and achieves the sameresults. By localizing target traffic, it is a simpler implementation.To create an ingress ACL, use the ip access-group command in EXEC Privilege mode. The exampleshows applying the ACL, rules to the newly created access group, and viewing the access list.Example of Applying ACL Rules to Ingress Traffic and Viewing ACL ConfigurationTo specify ingress, use the in keyword. Begin applying rules to the ACL with the ip access-listextended abcd command. To view the access-list, use the show command.Dell(conf)#interface tengigabitethernet 1/1/1Dell(conf-if-te1/1/1)#ip access-group abcd inDell(conf-if-te1/1/1)#show config!tengogabitethernet 1/1/1no ip addressip access-group abcd inno shutdownDell(conf-if-te1/1/1)#endDell#configure terminalDell(conf)#ip access-list extended abcdDell(config-ext-nacl)#permit tcp any anyDell(config-ext-nacl)#deny icmp any anyDell(config-ext-nacl)#permit 1.1.1.2Dell(config-ext-nacl)#endDell#show ip accounting access-list!Extended Ingress IP access list abcd on tengigabitethernet 1/1/1seq 5 permit tcp any anyseq 10 deny icmp any anyseq 15 permit 1.1.1.2114 Access Control Lists (ACLs)
