Configuring A Radius Server - D-Link NetDefendOS User Manual

Section 3.5.3, "ARP Publish".
Support for Groups
RADIUS authentication supports the specification of groups for a user. This means that a user can
also be specified as being in the administrators or auditors group.
Note: Set the RADIUS Vendor ID for group membership
If the RADIUS server is required to send the group membership, it is necessary to use the
user group vendor specific attribute vendor when configuring the server. The
NetDefendOS Vendor ID is 5089 and the user group is defined as vendor-type 1 with a
string value type.
Automatic IP Address Allocation
With IPsec, L2TP and PPTP tunnels for roaming clients, it is possible for NetDefendOS to
automatically allocate IP addresses as part of the RADIUS authentication process.
Depending on how it is configured, a RADIUS server can optionally return IP address information
to NetDefendOS in its Access-Accept message when it authenticates a client. NetDefendOS will
automatically recognize and use the following parameters in a RADIUS Accept-Access message:
• Framed-IP-Address
This parameter is an IP address allocated for the client which NetDefendOS automatically will
send to the connecting client as a part of the tunnel negotiation.
• Framed-IP-Netmask
In some cases, the client might be a network device, such as another firewall with a network
behind it. The Framed-IP-Netmask parameter requires that the Framed-IP-Address is also
present in the Access-Accept message. The netmask together with the IP address is combined
to form a route which will be sent to the client as a part of the tunnel negotiation as a
definition of the network behind the client.
• Framed-Route
This can be sent by the RADIUS server instead of Framed-IP-Address and Framed-IP-Netmask.
The route will be sent to the client as a part of the tunnel negotiation as a definition of the
network behind the client.
This IP address information will be automatically sent to the client in either of the following ways:
• During the IKE negotiation phase of IPsec tunnel setup.
• Over PPP when setting up an L2TP or PPTP tunnel.
In addition, NetDefendOS will automatically add a route to its configuration if either the
Framed-IP-Address, Framed-Route or the Framed-IP-Address along with Framed-IP-Netmask
parameter is received. The automatic addition of this route can be controlled in the normal way
by setting the relevant property in the tunnel object for the automatic addition of routes.
Example 8.3. Configuring a RADIUS Server
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Chapter 8: User Authentication