Accton Technology ES4524D, ES4548D manual Standard IPv4 ACL, Access-list ip, No permit deny tcp

IPv4 ACLs 44

Default Setting

None

Command Mode

Standard IPv4 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.

Example

This example configures one permit rule for the specific address 10.1.1.21 and another rule for the address range 168.92.16.x – 168.92.31.x using a bitmask.

Console(config-std-acl)#permit host 10.1.1.21

Console(config-std-acl)#permit 168.92.16.0 255.255.240.0

Console(config-std-acl)#

Related Commands

access-list ip (44-2)

permit, deny (Extended IPv4 ACL)

This command adds a rule to an Extended IPv4 ACL. The rule sets a filter condition for packets with specific source or destination IP addresses, protocol types, source or destination protocol ports, or TCP control codes. Use the no form to remove a rule.

Syntax

[no] {permit deny} [protocol-number udp] {any source address-bitmask host source}

{any destination address-bitmask host destination} [precedence precedence] [tos tos] [dscp dscp]

[source-portsport [bitmask]] [destination-portdport [port-bitmask]]

[no] {permit deny} tcp

{any source address-bitmask host source}

{any destination address-bitmask host destination} [precedence precedence] [tos tos] [dscp dscp]

[source-port sport [bitmask]] [destination-port dport [port-bitmask]][control-flag control-flagsflag-bitmask]

•protocol-number– A specific protocol number. (Range: 0-255)

•source – Source IP address.

•destination – Destination IP address.

•address-bitmask– Decimal number representing the address bits to match.

44-3