Configuring extended cross-subnet portal authentication
Network requirements
As shown in Figure 64, Switch A supports portal authentication. The host accesses Switch A through Switch B. A portal server acts as both a portal authentication server and a portal Web server. A RADIUS server acts as the authentication/accounting server.
Configure Switch A for extended cross-subnet portal authentication. Before passing portal authentication, the host can access only the portal server. After passing portal identity authentication, the host accepts security check. If the host fails the security check it can access only the subnet 192.168.0.0/24. After passing the security check, the host can access other network resources.
Figure 63: Network diagram
Configuration prerequisites and guidelines
Configure IP addresses for the switch and servers as shown in Figure 64 and make sure the host, switch, and servers can reach each other.
Configure the RADIUS server correctly to provide authentication and accounting functions.
Make sure the IP address of the portal device added on the portal server is the IP address (20.20.20.1) of the switch's interface connecting the host. The IP address group associated with the portal device is the subnet of the host (8.8.8.0/24).
Configuration procedure
Perform the following tasks on Switch A.
Configure a RADIUS scheme:
# Create a RADIUS scheme named rs1 and enter its view.
<SwitchA> system-view [SwitchA] radius scheme rs1
# Specify the primary authentication server and primary accounting server, and configure the keys for communication with the servers.
[SwitchA-radius-rs1] primary authentication 192.168.0.112 [SwitchA-radius-rs1] primary accounting 192.168.0.112 [SwitchA-radius-rs1] key accounting simple radius [SwitchA-radius-rs1] key authentication simple radius [SwitchA-radius-rs1] user-name-format without-domain
# Specify the security policy server.
[SwitchA-radius-rs1] security-policy-server 192.168.0.113 [SwitchA-radius-rs1] quit
# Enable RADIUS session control.
[SwitchA] radius session-control enable
Configure an authentication domain:
# Create an ISP domain named dm1 and enter its view.
[SwitchA] domain dm1
# Configure AAA methods for the ISP domain.
[SwitchA-isp-dm1] authentication portal radius-scheme rs1 [SwitchA-isp-dm1] authorization portal radius-scheme rs1 [SwitchA-isp-dm1] accounting portal radius-scheme rs1 [SwitchA-isp-dm1] quit
# Configure domain dm1 as the default ISP domain. If a user enters the username without the ISP domain name at login, the authentication and accounting methods of the default domain are used for the user.
[SwitchA] domain default enable dm1
Configure ACL 3000 as the isolation ACL and ACL 3001 as the security ACL.
[SwitchA] acl advanced 3000 [SwitchA-acl-ipv4-adv-3000] rule permit ip destination 192.168.0.0 0.0.0.255 [SwitchA-acl-ipv4-adv-3000] rule deny ip [SwitchA-acl-ipv4-adv-3000] quit [SwitchA] acl advanced 3001 [SwitchA-acl-ipv4-adv-3001] rule permit ip [SwitchA-acl-ipv4-adv-3001] quit
NOTE: To avoid user login failure , do not specify a source IP address when you configure a rule in ACL 3000 and ACL 3001. Make sure you specify ACL 3000 as the isolation ACL and ACL 3001 as the security ACL on the security policy server. | ||
Configure portal authentication:
# Configure a portal authentication server.
[SwitchA] portal server newpt [SwitchA-portal-server-newpt] ip 192.168.0.111 key simple portal [SwitchA-portal-server-newpt] port 50100 [SwitchA-portal-server-newpt] quit
# Configure a portal Web server.
[SwitchA] portal web-server newpt [SwitchA-portal-websvr-newpt] url http://192.168.0.111:8080/portal [SwitchA-portal-websvr-newpt] quit
# Enable cross-subnet portal authentication on VLAN-interface 4.
[SwitchA] interface vlan-interface 4 [SwitchA–Vlan-interface4] portal enable method layer3
# Reference the portal Web server newpt on VLAN-interface 4.
[SwitchA–Vlan-interface4] portal apply web-server newpt
# Configure the BAS-IP as 20.20.20.1 for portal packets sent from VLAN-interface 4 to the portal authentication server.
[SwitchA–Vlan-interface4] portal bas-ip 20.20.20.1 [SwitchA–Vlan-interface4] quit
On Switch B, configure a default route to subnet 192.168.0.0/24, specifying the next hop address as 20.20.20.1. (Details not shown.)
Verifying the configuration
# Verify that the portal configuration has taken effect.
[SwitchA] display portal interface vlan-interface 4 Portal information of Vlan-interface4 NAS-ID profile: Not configured VSRP instance : Not configured VSRP state : N/A Authorization : Strict checking ACL : Disabled User profile : Disabled IPv4: Portal status: Enabled Portal authentication method: Layer3 Portal web server: newpt Authentication domain: Not configured Pre-auth domain: Not configured User-dhcp-only: Disabled Pre-auth IP pool: Not configured Max Portal users: Not configured Bas-ip: 20.20.20.1 User Detection: Not configured Action for server detection: Server type Server name Action -- -- -- Layer3 source network: IP address Mask Destination authenticate subnet: IP address Mask IPv6: Portal status: Disabled Portal authentication method: Disabled Portal web server: Not configured Authentication domain: Not configured Pre-auth domain: Not configured User-dhcp-only: Disabled Pre-auth IP pool: Not configured Max Portal users: Not configured Bas-ip: Not configured User detection: Not configured Action for server detection: Server type Server name Action -- -- -- Layer3 source network: IP address Prefix length Destination authenticate subnet: IP address Prefix length
Before passing portal authentication, a user that uses the HPE iNode client can access only the authentication page http://192.168.0.111:8080/portal. All Web requests from the user will be redirected to the authentication page.
The user can access the resources permitted by ACL 3000 after passing only identity authentication.
The user can access network resources permitted by ACL 3001 after passing both identity authentication and security check.
# After the user passes identity authentication and security check, use the following command to display information about the portal user.
[SwitchA] display portal user interface vlan-interface 4 Total portal users: 1 Username: abc Portal server: newpt State: Online VPN instance: N/A MAC IP VLAN Interface 0000-0000-0000 8.8.8.2 4 Vlan-interface4 Authorization information: DHCP IP pool: N/A ACL: 3001 CAR: N/A