Specifications

AVM Access Server – Glossary 123
Domain controller
In Windows networks, servers that are to share user account information
can be grouped together in one or more domains. One server in the do-
main, the Domain controller or DC, stores all account information.
The advantage of organizing servers in domains is that users can ac-
cess all resources with a single user name and password. User account
maintenance is simplified because all changes are entered only on the
domain controller.
DSS1
Standard European ISDN D-channel protocol. All recent ISDN lines in
Germany use DSS1.
Dynamic DNS
Dynamic DNS is an Internet service offered by both commercial and
free providers. Dynamic DNS allows a server to remain accessible in
the Internet under a constant domain name even if its IP address
changes frequently. In order to use this service, you must register with
a dynamic DNS provider and specify a domain name. The dynamic DNS
provider then supplies you with your access information. Each time the
Internet connection is dialed up, the current IP address is sent to the
dynamic DNS provider, where it is mapped to the domain name in the
DNS. In this way your server can always be accessed by its domain
name.
If you want to use VPN connections with the AVM Access Server and
your Internet Service Provider assigns IP addresses dynamically, then
you must use dynamic DNS.
ESP (Encapsulating Security Payload)
A security protocol in the IPsec suite. ESP provides authentication of
the source of a data packet, as well as encryption to ensure the privacy
and integrity of user data.
Filter profiles
Filter profiles are used to restrict the kinds of IP packets that can enter
or leave the AVM Access Server. Specific packets can be filtered out of
the data stream and discarded or rejected rather than transported. Fil-
ter profiles can reduce connection costs and increase security in the
network: