iii
Configuration restrictions and guidelines ··········································································································· 96
Configuration procedure ······································································································································ 96
Referencing a portal Web server for an interface ······································································································ 96
Controlling portal user access ······································································································································ 97
Configuring a portal-free rule······························································································································· 97
Configuring an authentication source subnet ····································································································· 98
Configuring an authentication destination subnet ····························································································· 99
Setting the maximum number of portal users ··································································································· 100
Specifying a portal authentication domain ······································································································ 100
Configuring portal detection functions ······················································································································· 101
Configuring online detection of portal users ···································································································· 101
Configuring portal authentication server detection ·························································································· 102
Configuring portal Web server detection ········································································································· 103
Configuring portal user synchronization ··········································································································· 103
Configuring the portal fail-permit function ················································································································· 104
Configuring BAS-IP for unsolicited portal packets sent to the portal authentication server ·································· 105
Enabling portal roaming ············································································································································· 106
Logging out portal users ·············································································································································· 106
Displaying and maintaining portal ···························································································································· 106
Portal configuration examples ···································································································································· 107
Configuring direct portal authentication ··········································································································· 107
Configuring re-DHCP portal authentication ······································································································ 115
Configuring cross-subnet portal authentication ································································································ 119
Configuring extended direct portal authentication ·························································································· 122
Configuring extended re-DHCP portal authentication ····················································································· 125
Configuring extended cross-subnet portal authentication ··············································································· 128
Configuring portal server detection and portal user synchronization ··························································· 132
Configuring cross-subnet portal authentication for MPLS L3VPNs ································································· 140
Troubleshooting portal ················································································································································· 142
No portal authentication page is pushed for users ························································································· 142
Cannot log out portal users on the access device ··························································································· 142
Cannot log out portal users on the RADIUS server ·························································································· 143
Users logged out by the access device still exist on the portal authentication server ·································· 143
Re-DHCP portal authenticated users cannot log in successfully······································································ 144
Configuring port security ········································································································································ 145
Overview ······································································································································································· 145
Port security features ··········································································································································· 145
Port security modes ············································································································································· 145
Configuration task list ·················································································································································· 148
Enabling port security ·················································································································································· 149
Setting port security's limit on the number of secure MAC addresses on a port ·················································· 149
Setting the port security mode ···································································································································· 150
Configuring port security features ······························································································································ 151
Configuring NTK ················································································································································· 151
Configuring intrusion protection ························································································································ 151
Configuring secure MAC addresses ·························································································································· 152
Configuration prerequisites ································································································································ 153
Configuration procedure ···································································································································· 153
Ignoring authorization information from the server ·································································································· 153
Enabling MAC move ··················································································································································· 154
Displaying and maintaining port security ·················································································································· 154
Port security configuration examples ························································································································· 155
autoLearn configuration example ······················································································································ 155
userLoginWithOUI configuration example ······································································································· 156
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