beautypg.com

Accton Technology Edge-corE Fast Ethernet Switch ES3528M-SFP User Manual

Page 438

background image

Command Line Interface

4-142

4

Syntax

[no] {permit | deny} [protocol-number | udp]

{any | source address-bitmask | host source}
{any | destination address-bitmask | host destination}
[source-port sport [end]] [destination-port dport [end]]

[no] {permit | deny} tcp

{any | source address-bitmask | host source}
{any | destination address-bitmask | host destination}
[source-port sport [end]] [destination-port dport [end]]

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.
host – Keyword followed by a specific IP address.
sport – Protocol

17

source port number. (Range: 0-65535)

dport – Protocol

17

destination port number. (Range: 0-65535)

end – Upper bound of the protocol port range. (Range: 0-65535)

Default Setting

None

Command Mode

Extended ACL

Command Usage

• All 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 accepts any incoming packets if the source address is within subnet
10.7.1.x. For example, if the rule is matched; i.e., the rule (10.7.1.0 & 255.255.255.0)
equals the masked address (10.7.1.2 & 255.255.255.0), the packet passes through.

17. Includes TCP, UDP or other protocol types.

Console(config-ext-acl)#permit 10.7.1.1 255.255.255.0 any
Console(config-ext-acl)#