3Com S7902E, Configuration Manual

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[Switch-acl-adv-3001] rule permit ip
[Switch-acl-adv-3001] quit
4) Configure portal authentication
# Configure the portal server as follows:
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Name: newpt
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IP address: 192.168.0.111
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Key: portal
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Port number: 50100
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URL: http://192.168.0.111/portal.
[Switch] portal server newpt ip 192.168.0.111 key portal port 50100
url http://192.168.0.111/portal
# Configure the switch as a DHCP relay agent, and enable the invalid address check function.
[Switch] dhcp enable
[Switch] dhcp relay server-group 0 ip 192.168.0.112
[Switch] interface vlan-interface 100
[Switch–Vlan-interface100] ip address 20.20.20.1 255.255.255.0
[Switch–Vlan-interface100] ip address 10.0.0.1 255.255.255.0 sub
[Switch-Vlan-interface100] dhcp select relay
[Switch-Vlan-interface100] dhcp relay server-select 0
[Switch-Vlan-interface100] dhcp relay address-check enable
# Enable re-DHCP portal authentication on the interface connecting the host.
[Switch–Vlan-interface100] portal server newpt method redhcp
[Switch–Vlan-interface100] quit
Configuring Layer 3 Portal Authentication with Extended Functions
Network requirements
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Switch A is configured for Layer 3 extended portal authentication. When users have passed identity
authentication but have not passed security authentication, they can access only subnet
192.168.0.0/24. After passing security authentication, they can access unrestricted Internet
resources.
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The host accesses Switch A through Switch B.
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A RADIUS server serves as the authentication/accounting server.