H3C S6812 Series Command Reference Manual page 1855

Use undo portal free-all except destination to delete the IPv4 portal authentication destination
subnets on the interface.
Syntax
portal free-all except destination ipv4-network-address { mask-length | mask }
undo portal free-all except destination [ ipv4-network-address ]
Default
No IPv4 portal authentication destination subnet is configured on the interface. Portal users must
pass portal authentication to access any subnet.
Views
Interface view
Predefined user roles
network-admin
Parameters
ipv4-network-address: Specifies an IPv4 portal authentication subnet address.
mask-length: Specifies the subnet mask length for the authentication subnet address, in the range of
0 to 32.
mask: Specifies the subnet mask in dotted decimal format.
Usage guidelines
Portal users on the interface are authenticated when accessing the specified authentication
destination subnet (except IP addresses and subnets specified in portal-free rules). The users can
access other subnets without portal authentication.
You can configure multiple authentication destination subnets.
If you do not specify the ipv4-network-address argument in the undo portal free-all except
destination command, this command deletes all IPv4 portal authentication destination subnets on
the interface.
Re-DHCP authentication does not support authentication destination subnets.
If you configure both an authentication source subnet and an authentication destination subnet on an
interface, only the authentication destination subnet takes effect.
Examples
# Configure an IPv4 portal authentication destination subnet of 11.11.11.0/24 on VLAN-interface 2.
Portal users need to pass authentication to access this subnet and can access other subnets without
authentication.
<Sysname> system-view
[Sysname] interface vlan-interface 2
[Sysname–Vlan-interface2] portal free-all except destination 11.11.11.0 24
Related commands
display portal
portal free-rule
Use portal free-rule to configure an IP-based portal-free rule.
Use undo portal free-rule to delete portal-free rules.
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