AT&T DEFINITY 555-230-223 - Manual (Page 19)

Introduction
unauthorized client access attempts, time of Multi-Function Board resets,
and commands executed from Administration/Maintenance screens.
This system does not support an encrypted/secured protocol; therefore, it is
possible for a criminal hacker to ‘‘spoof’’ the system by reverse engineering the
protocol and then ‘‘impersonating’’ a valid DEFINITY LAN Gateway client.
This is more likely to occur if the hacker has physical access to the Ethernet LAN
or to a system attached to the Ethernet LAN that supports the DEFINITY LAN
Gateway. Customers are encouraged to help protect the system and reduce the
possibility of toll fraud occurring by attaching the system assembly and its clients
to an isolated, physically secure Ethernet (not connected to any other Ethernet).
1-6 Issue 1 January 1996