Operation Manual

Speed
NetWAYS/ISDN – 1 Welcome to NetWAYS/ISDN 9
Speed
With 64 kbit/s per channel, ISDN provides sufficient native
bandwidth for today’s client/server applications. Thanks to
on-the-fly data compression and header compression,
NetWAYS/ISDN achieves a further performance boost. These
techniques permit speeds of up to 240 kbit/s, depending on
the type of data transported. Moreover, two B channels can
also be bundled to increase bandwidth still further.
ADSL permits fast Internet access over the same cable as a
telephone line. Data communication takes place at up to
6 Mbit/s downstream (that is, from the Internet to the user)
and up to 640 kbit/s upstream.
Security
Security too has been a top priority in the development of
NetWAYS/ISDN. Authentication between the remote client
and the LAN server takes place even before data packets can
be exchanged at the network protocol level. NetWAYS/ISDN
supports two types of authentication: PAP (the Password Au-
thentication Protocol) and CHAP (the Challenge Handshake
Authentication Protocol). NetWAYS/ISDN uses “Caller ID” as
an additional security check. At the LAN end, AVM products
permit the use of access controls and packet filters. Further-
more, the network operating system’s user-level security
mechanisms are also applied.
VPN
Remote access to a LAN can also be implemented with
NetWAYS/ISDN over a VPN link. IPsec is used as the network
protocol to meet the following security requirements:
Authenticity: when a connection is opened, the commu-
nicating parties identify each other to ensure that all
data comes from the authentic source.
Privacy: data communication is encrypted, so that no
third party can eavesdrop.
Integrity: a digital signature on each packet ensures
that the data is not manipulated in transmission.
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