Specifications

AVM Access Server Concepts and Functional Principles
58 AVM Access Server – 5 AVM Access Server Concepts and Functional Principles
5 AVM Access Server Concepts and
Functional Principles
This chapter presents a number of the features and options provided
by the AVM Access Server. Settings are described with their underlying
concepts, areas of application, and actual functions in the AVM Access
Server as a whole.
5.1 Filters
Filters are used both to prevent unauthorized intrusion into your net-
work–from the Internet, for example–and to select which data and ser-
vices are available for access from outside the LAN. This selective ac-
cess also helps to minimize connection costs. The AVM Access Server
provides extensive filtering options in the “Security / Filter profiles”
folder.
IP Packet Filter Firewall
The AVM Access Server provides your network with IP packet filtering in
the following instances:
destination-specific input filters
destination-specific output filters
global input filter
global output filter
forwarding filter
You may set filtering rules for each of these instances to define how the
AVM Access Server deals with incoming and outgoing packets and
packets to be forwarded to other networks. The possible actions in
each case are “Drop” (discard the packet), “Reject” (return an error
message) and “Accept”. For example, you may specify precisely which
stations can communicate with one another, or you can stipulate that
certain IP services, such as “HTTP” services for access to web servers,
are only accepted from certain stations in your network.