Configuring portal server detection and portal user information synchronization

As shown in Figure 62, a host is directly connected to a switch (the access device) and must pass portal authentication before it can access the Internet. A RADIUS server serves as the authentication/accounting server.

Detailed requirements are as follows:

• The host is assigned with a public network IP address either manually or through DHCP. Before passing portal authentication, the host can access only the portal server. After passing portal authentication, the host can access the Internet.

• The access device (Switch) can detect whether the portal server is reachable and send trap messages upon state changes. When the portal server is unreachable due to, for example, a connection failure, network device failure, or portal server failure, the access device can disable portal authentication, allowing users to access the Internet without authentication.

• The access device can synchronize portal user information with the portal server periodically.

• Configure IP addresses for the host, switch, and servers as shown in Figure 62 and make sure they can reach each other.

• Configure the RADIUS server properly to provide authentication and accounting functions for users.

This example assumes that the portal server runs on IMC PLAT 5.0(E0101) and IMC UAM 5.0(E0101).

# Configure the portal server.

Log in to IMC and select the Service tab. Then, select User Access Manager > Portal Service Management > Server from the navigation tree to enter the portal server configuration page, as shown in Figure 63.

• Configure the portal server heartbeat interval and user heartbeat interval.

• Use default values for other parameters.

# Configure the IP address group.

Select User Access Manager > Portal Service Management > IP Group from the navigation tree to enter the portal IP address group configuration page. Then, click Add to enter the page shown in Figure 64.

• Enter the IP group name.

• Enter the start IP address and end IP address of the IP group. Make sure that the host IP address is in the IP group.

• Select a service group. By default, the group Ungrouped is used.

• Select the IP group type Normal.

# Add a portal device.

Select User Access Manager > Portal Service Management > Device from the navigation tree to enter the portal device configuration page. Then, click Add to enter the page shown in Figure 65.

• Enter the device name NAS.

• Enter the IP address of the switch's interface connected to the user.

• Enter the key, which must be the same as that configured on the switch.

• Set whether to enable IP address reallocation. This example uses direct portal authentication, and therefore select No from the Reallocate IP list.

• Select Yes for both Support Server Heartbeat and Support User Heartbeat.

# Associate the portal device with the IP address group.

As shown in Figure 66, click the icon in the Port Group Information Management column of device NAS to enter the port group configuration page.

On the port group configuration page, click Add to enter the page shown in Figure 67. Perform the following configurations:

• Enter the port group name.

• Select the configured IP address group. The IP address used by the user to access the network must be within this IP address group.

• Use the default settings for other parameters.

# Select User Access Manager > Service Parameters > Validate System Configuration from the navigation tree to validate the configurations.

# Create RADIUS scheme rs1 and enter its view.

<Switch> system-view
[Switch] radius scheme rs1

# Configure the server type for the RADIUS scheme. When using the IMC server, configure the RADIUS server type as extended.

[Switch-radius-rs1] server-type extended

# Specify the primary authentication server and primary accounting server, and configure the keys for communication with the servers.

[Switch-radius-rs1] primary authentication 192.168.0.112
[Switch-radius-rs1] primary accounting 192.168.0.112
[Switch-radius-rs1] key authentication simple radius
[Switch-radius-rs1] key accounting simple radius

# Configure the access device to not carry the ISP domain name in the username sent to the RADIUS server.

[Switch-radius-rs1] user-name-format without-domain
[Switch-radius-rs1] quit

# Create ISP domain dm1 and enter its view.

[Switch] domain dm1

# Configure AAA methods for the ISP domain.

[Switch-isp-dm1] authentication portal radius-scheme rs1
[Switch-isp-dm1] authorization portal radius-scheme rs1
[Switch-isp-dm1] accounting portal radius-scheme rs1
[Switch-isp-dm1] quit

# Configure domain dm1 as the default ISP domain for all users. Then, if a user enters a username without the ISP domain at logon, the authentication and accounting methods of the default domain are used for the user.

[Switch] domain default enable dm1

# Configure a portal server on the switch, specifying the portal server name as newpt, IP address as 192.168.0.111, key as plaintext string portal, port number as 50100, and URL as http://192.168.0.111:8080/portal.

[Switch] portal server newpt ip 192.168.0.111 key portal port 50100 url http://192.168.0.111:8080/portal

# Enable portal authentication on the interface connecting the host.

[Switch] interface vlan-interface 100
[Switch–Vlan-interface100] portal server newpt method direct
[Switch–Vlan-interface100] quit

# Configure the access device to detect portal server newpt, specifying the detection method as portal heartbeat probe, setting the server probe interval to 40 seconds, and specifying the access device to send a server unreachable trap message and disable portal authentication to permit unauthenticated portal users if two consecutive probes fail.

[Switch] portal server newpt server-detect method portal-heartbeat action trap permit-all interval 40 retry 2

The product of interval and retry must be greater than or equal to the portal server heartbeat interval, and Hewlett Packard Enterprise recommends configuring the interval as a value greater than the portal server heartbeat interval configured on the portal server.

# Configure the access device to synchronize portal user information with portal server newpt, setting the synchronization probe interval to 600 seconds, and specifying the access device to log off users if the users do not appear in the user synchronization packets sent from the server in two consecutive probe intervals.

[Switch] portal server newpt user-sync interval 600 retry 2

The product of interval and retry must be greater than or equal to the portal user heartbeat interval, and Hewlett Packard Enterprise recommends configuring the interval as a value greater than the portal user heartbeat interval configured on the portal server.

Use the following command to view information about the portal server.

<Switch> display portal server newpt
 Portal server:
  1)newpt:
      IP   : 192.168.0.111
      Key  : ******
      Port : 50100
      URL  : http://192.168.0.111:8080/portal
   Status  : Up

The Up state of the portal server indicates that the portal server is reachable. If the access device detects that the portal server is unreachable, you can see the portal server status is Down in the output, and the access device generates a server unreachable trap "portal server newpt lost" and disables portal authentication on the access interface, so the client can access the external network without authentication.