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Access Control List Commands
44-2
44
access-list ip
This command adds an IP access list and enters configuration mode for standard or
extended IPv4 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
• 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 96 rules.
Example
Related Commands
permit, deny 44-2
ip access-group (44-6)
show ip access-list (44-5)
permit, deny (Standard IPv4 ACL)
This command adds a rule to a Standard IPv4 ACL. The rule sets a filter condition
for packets emanating from the specified source. Use the no form to remove a rule.
Syntax
[no] {permit | deny} {any | source bitmask | host source}
• any – Any source IP address.
• source – Source IP address.
• bitmask – Decimal number representing the address bits to match.
• host – Keyword followed by a specific IP address.
Console(config)#access-list ip standard david
Console(config-std-acl)#