Permit, deny (extended acl) – LevelOne GSW-2692 User Manual

Page 270

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Command Line Interface

4-92

4

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.

Related Commands

access-list ip (4-90)

permit, deny (Extended ACL)

This command adds a rule to an Extended IP 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-port sport [end]] [destination-port dport [end]]

[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 [end]] [destination-port dport [end]]
[control-flag control-flags flag-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.
host – Keyword followed by a specific IP address.
• precedence – IP precedence level. (Range: 0-7)
• tos – Type of Service level. (Range: 0-15)
dscp – DSCP priority level. (Range: 0-63)

sport – Protocol

16

source port number. (Range: 0-65535)

dport – Protocol

16

destination port number. (Range: 0-65535)

end – Upper bound of the protocol port range. (Range: 0-65535)
control-flags – Decimal number (representing a bit string) that specifies flag

bits in byte 14 of the TCP header. (Range: 0-63)

flag-bitmask – Decimal number representing the code bits to match.

(Range: 0-63)

Console(config-std-acl)#permit host 10.1.1.21
Console(config-std-acl)#permit 168.92.16.0 255.255.240.0

16. Includes TCP, UDP or other protocol types.

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