acl (VTY-type user interface view)

Function

The acl command restricts the incoming and outgoing calls on the user interface.

The undo acl command can cancels the current settings.

By default, there is no restriction on incoming and outgoing calls.

acl { acl4name | acl4num } { inbound | outbound }

acl ipv6 { acl6name | acl6num } { inbound | outbound }

undo acl inbound

undo acl outbound

undo acl ipv6 inbound

undo acl ipv6 outbound

Parameter	Description	Value
acl4name	Specifies the name of ACL rule.	The value is a string of 1 to 64 case-sensitive characters, spaces not supported.
acl4num	Specifies the ID of an ACL.	For basic ACL, the value is an integer ranging from 2000 to 2999. For advanced ACL, the value is an integer ranging from 3000 to 3999.
inbound	Restricts the incoming calls on the user interface.	-
outbound	Restricts the outgoing calls on the user interface.	-
ipv6	Specifies the IPv6 protocol.	-
acl6name	Specifies the name of ipv6 ACL rule.	The value is a string of 1 to 64 case-sensitive characters, spaces not supported.
acl6num	Specifies the ID of an ipv6 ACL.	For basic ACL, the value is an integer ranging from 2000 to 2999. For advanced ACL, the value is an integer ranging from 3000 to 3999.

VTY-type user interface view

3: Management level

Task Name	Operations
tty	write

Usage Scenario

Before running this command, you need to run the acl command and the rule command to configure the ACL.
Only the ACL of the same type can be configured without conflict on a user interface, namely, IPv4 inbound, IPv4 outbound, IPv6 inbound, and IPv6 outbound. Only one ACL can be configured for each type.
After the configurations of this ACL take effect, all users in the user interface are under the restriction of this ACL.

Precautions

If no ACL rule is configured, running the acl command does not restrict the outgoing calls of user interfaces.

# Restrict the Telnet outgoing call on the user interface VTY 0.

<HUAWEI> system-view
[~HUAWEI] acl 2000
[*HUAWEI-acl4-basic-2000] quit
[*HUAWEI] user-interface vty 0
[*HUAWEI-ui-vty0] acl 2000 outbound