Specifications

IP Addresses From a Dedicated Subnetwork
106 AVM Access Server – 6 AVM Access Server for Experts
IP Addresses From a Dedicated Subnetwork
Example:
In this case, all computers in the LAN must have a route to the network
192.168.20.0/24.
If the Access Server is the default gateway in the LAN (this is the case if
the Access Server provides Internet access for the LAN, for example),
then no further routing configuration is necessary.
If the default gateway is another router, then a route to the IP network
defined for dial-in users must be entered in its routing table, with the
AVM Access Server’s address as the gateway. In the example, the route
would be added as follows (in Windows notation):
192.168.20.0 mask 255.255.255.0 172.16.1.1 metric 1
Other Parameters Transmitted to Remote Users
All settings transmitted to remote users, by IPCP on direct dial-in con-
nections or by IKE mode configuration on VPN connections, are taken
from the first LAN adapter in the AVM Access Server computer. These
parameters include the two DNS server addresses and, on direct dial-
in, two WINS server addresses. The gateway address communicated to
dial-in peers is the IP address of the first LAN adapter. On VPN connec-
tion set-up, IKE mode configuration is used to communicate the two
DNS server entries only if they are within an IP network that is reach-
able from the remote site over the VPN.
Remote Users Database
The AVM Access Server has its own user database. The user’s proper-
ties can be configured in the internal database in detail. Alternatively,
however, an existing external user database can be used for authenti-
cation by means of the RADIUS protocol. For example, RADIUS can be
used to access the Windows user database. Microsoft provides the “In-
ternet Authentication Service” for this purpose.
AVM Access Server: 172.16.1.1
Local network: 172.16.0.0 / 16 (172.16.0.1 to 172.16.255.254)
IP address range for
assignment to remote
users:
192.168.20.0 / 24 (192.168.20.1 to 192.168.20.254)