
Access Control List Commands
4-89
4
IP ACLs
access-list ip
This command adds an IP access list and enters configuration mode for standard or
extended IP ACLs. Use the
no
form to remove the specified ACL.
Syntax
[
no
]
access-list ip
{
standard
|
extended
}
acl_name
•
standard
– Specifies an ACL that filters packets based on the source IP
address.
•
extended
– Specifies an ACL that filters packets based on the source or
destination IP address, and other more specific criteria.
•
acl_name
– Name of the ACL. (Maximum length: 16 characters)
Default Setting
None
Command Mode
Global Configuration
Command Usage
• An egress ACL must contain all deny rules.
• When you create a new ACL or enter configuration mode for an existing ACL,
use the
permit
or
deny
command to add new rules to the bottom of the list.
To create an ACL, you must add at least one rule to the list.
• To remove a rule, use the
no permit
or
no deny
command followed by the
exact text of a previously configured rule.
• An ACL can contain up to 32 rules.
Table 4-34 IP ACL Commands
Command
Function
Mode
Page
access-list ip
Creates an IP ACL and enters configuration mode for
standard or extended IP ACLs
GC
4-89
permit, deny
Filters packets matching a specified source IP address
STD-ACL
4-90
permit, deny
Filters packets meeting the specified criteria, including
source and destination IP address, TCP/UDP port number,
protocol type, and TCP control code
EXT-ACL
4-91
show ip access-list
Displays the rules for configured IP ACLs
PE
4-93
access-list ip
mask-precedence
Changes to the IP Mask mode used to configure access
control masks
GC
4-93
mask
Sets a precedence mask for the ACL rules
IP-Mask
4-94
show access-list ip
mask-precedence
Shows the ingress or egress rule masks for IP ACLs
PE
4-97
ip access-group
Adds a port to an IP ACL
IC
4-98
show ip access-group
Shows port assignments for IP ACLs
PE
4-98
Summary of Contents for ES4625
Page 2: ......
Page 4: ...ES4625 ES4649 F3 1 1 21 E042005 R01 149100022900A...
Page 22: ...Contents xxii...
Page 40: ...Introduction 1 10 1...
Page 652: ...Command Line Interface 4 324 4...
Page 666: ...Glossary Glossary 8...
Page 672: ...Index 6 Index...
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