3com 8807 User Guide

C

HAPTER

 21: ACL C

ONFIGURATION

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If the time-range keyword is not selected, the ACL will be effective at any time 
after being activated.

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You can define multiple sub rules for the ACL by using the rule command 
several times.

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When the QoS/ACL action is configured under the port, if the QoS/ACL is 
applied without sub rules, the QoS/ACL is matched as per the matching order 
defined in the ACL rule; if applied with specific sub rules, the QoS/ACL is 
matched as per the sequence applied under the port.

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By default, ACL rules are matched in config order.

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If you want to replace an existing rule, you are recommended to use the undo 
command to delete the original rule first and then reconfigure the rule.

Basic ACLs only make rules and process packets according to the source IP 
addresses.

Perform the following configurations in the specified views.

Advanced ACLs define classification rules and process packets according to the 
attributes of the packets such as source and destination IP addresses, TCP/UDP 
ports used, and packet priority. ACLs support three types of priority schemes: ToS 
(type of service) priority, IP priority and DSCP priority.

Perform the following configurations in the specified view.

Table 151   Define basic ACL

Enter basic ACL view (system view) 

acl { number acl-number | name acl-name 
basic } [ match-order { config | auto } ] 

Define an ACL rule (basic ACL view) 

rule [ rule-id ] { permit | deny } [ source { 
source-addr wildcard | any } | fragment | 
time-range name | vpn-instance 
instance-name ]* 

Delete an ACL rule (basic ACL view) 

undo rule rule-id [ source | fragment | 
time-range | vpn-instance instance-name ]* 

Delete an ACL or all ACLs (system view) 

undo acl { number acl-number | name 
acl-name | all }

Table 152   Define advanced ACL

Enter advanced ACL view 
(system view) 

acl { number acl-number | name acl-name advanced } [ 
match-order { config | auto } ] 

Define an ACL rule 
(advanced ACL view) 

rule [ rule-id ] { permit | deny } protocol [ source { source-addr 
wildcard | any } ] [ destination { dest-addr wildcard | any } ] [ 
source-port operator port1 [ port2 ] ] [ destination-port 
operator port1 [ port2 ] ] [ icmp-type type code ] [ established 
] [ [ precedence precedence | tos tos ]* | dscp dscp ] [ 
fragment ] [ bt-flag ] [ time-range name ] [ vpn-instance 
instance-name ]