Command Line Reference Guide

200 | Access Control Lists (ACL)
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Related
Commands
Extended IP ACL Commands
When an ACL is created without any rule and then applied to an interface, ACL behavior reflects an
implicit permit.
The following commands configure extended IP ACLs, which in addition to the IP address also
examine the packet’s protocol type.
c and s platforms support Ingress IP ACLs only.
• deny
• deny arp
• deny ether-type
• deny icmp
• deny tcp
• deny udp
• ip access-list extended
• permit
• permit arp
• permit ether-type
• permit icmp
• permit tcp
• permit udp
• resequence access-list
• resequence prefix-list ipv4
• seq arp
• seq ether-type
• seq
deny
c e s
Configure a filter that drops IP packets meeting the filter criteria.
Syntax
deny {ip | ip-protocol-number} {source mask | any | host ip-address} {destination mask | any |
host ip-address} [count [byte] | log] [dscp value] [order] [monitor] [fragments]
To remove this filter, you have two choices:
•Use the no seq sequence-number command syntax if you know the filter’s sequence number or
•Use the no deny {ip | ip-protocol-number} {source mask | any | host ip-address}
{destination mask | any | host ip-address} command.
deny Configure a filter to drop packets.
permit Configure a filter to forward packets.
seq Assign a sequence number to a deny or permit filter in an IP access list while creating the
filter.
Note: See also Commands Common to all ACL Types and Common IP ACL Commands.