Specifications

Security Functions
AVM Access Server – 1 Welcome to the AVM Access Server 11
Security Functions
The AVM Access Server provides security functions on two different lev-
els. The AVM Access Server incorporates sophisticated features to en-
sure the authenticity of every site that connects to the LAN over ISDN.
Furthermore, data privacy and integrity ensure that no eavesdropping
or manipulation of data can take place during transmisssion.
Authenticity
The AVM Access Server provides the following capabilities:
Verification of caller’s number on the ISDN D channel
Authentication using the PPP protocols PAP and CHAP
The AVM Access Server supports authentication of both the local
and remote systems. The two systems can be assigned different
passwords.
Security call-back on incoming calls
Firewall capability through pre-defined and configurable IP filter
profiles
IP masquerading/Network Address Translation (NAT)
The following diagram illustrates the security checks that can be ap-
plied to an incoming call from a remote user: