Applying Ingress Acls On The Port Extender; Applying Egress Acls - Dell C9000 Series Networking Configuration Manual

To view which IP ACL is applied to an interface, use the show config command in INTERFACE mode, or use
the show running-config command in EXEC mode.
Example of Viewing ACLs Applied to an Interface
Dell(conf-if)#show conf
!
interface TengigabitEthernet 0/0
ip address 10.2.1.100 255.255.255.0
ip access-group nimule in
no shutdown
Dell(conf-if)#
To filter traffic on Telnet sessions, use only standard ACLs in the access-class command.

Applying Ingress ACLs on the Port Extender

Ingress ACLs are applied to port extender interfaces and to traffic entering the system.
These system-wide ACLs eliminate the need to apply ACLs onto each interface and achieves the same results.
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 example shows
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 Configuration
To specify ingress, use the in keyword. Begin applying rules to the ACL with the ip access-list
extended abcd command. To view the access-list, use the show command.
Dell(conf)#interface pegigE 1/0/0
Dell(conf-if-pegi-1/0/0)#ip access-group abcd in
Dell(conf-if-pegi-1/0/0)#show config
!
pegig 1/0/0
no ip address
ip access-group abcd in
no shutdown
Dell(conf-if-pegi-1/0/0)#end
Dell#configure terminal
Dell(conf)#ip access-list extended abcd
Dell(config-ext-nacl)#permit tcp any any
Dell(config-ext-nacl)#deny icmp any any
Dell(config-ext-nacl)#permit 1.1.1.2
Dell(config-ext-nacl)#end
Dell#show ip accounting access-list
!
Extended Ingress IP access list abcd on pegigE 1/0/0
seq 5 permit tcp any any
seq 10 deny icmp any any
seq 15 permit 1.1.1.2

Applying Egress ACLs

Egress ACLs are supported on interfaces and affect the traffic leaving the system.
Configuring egress ACLs onto physical interfaces protects the system infrastructure from attack — malicious
and incidental — by explicitly allowing only authorized traffic. These system-wide ACLs eliminate the need to
Access Control Lists (ACLs) 145