LevelOne GSW-2692 manual Permit, deny Ip access-group 4-94 show ip access-list, Standard ACL

Access Control List Commands 4

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 32 rules.

Example

Console(config)#access-list ip standard david

Console(config-std-acl)#

Related Commands

permit, deny 4-91

ip access-group (4-94) show ip access-list (4-94)

permit, deny (Standard ACL)

This command adds a rule to a Standard IP 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.

Default Setting

None

Command Mode

Standard ACL

Command Usage

•New rules are appended to the end of the list.

•Address bitmasks are similar to a subnet mask, containing four integers from 0 to 255, each separated by a period. The binary mask uses 1 bits to indicate “match” and 0 bits to indicate “ignore.” The bitmask is bitwise ANDed with the specified source IP address, and then compared with the address for each IP packet entering the port(s) to which this ACL has been assigned.

4-91