Siemens SINAMICS Configuration Manual page 230

Glossary
MMP
Abbreviation for SINUMERIK Integrate Manage MyPrograms
MMT
Abbreviation for SINUMERIK Integrate Manage MyTools
NAT (Network Address Translation)
NAT is a process used in IP routers that connect local networks to the Internet. Since, in
general, Internet access is only via one IP address (IPv4), all other nodes in the local network
require a private IP address. Private IP addresses can be used several times, but are not valid
in public networks. For this reason, nodes with a private IP address cannot communicate with
nodes outside the local network. In order for all computers with a private IP address to have
access to the Internet, the Internet access router must replace the IP addresses of the local
nodes with a separate, public IP address in all outgoing data packets. In order for the incoming
data packets to be assigned to the correct station, the router saves the current TCP
connections in a table. The NAT router "memorizes" which data packets belong to which TCP
connection. This process is called NAT (Network Address Translation).
NCU
Central control module of a CNC control for NC, HMI, PLC and closed-loop control.
OpenVPN
OpenVPN is a program to establish a virtual private network (VPN) via an encrypted TLS
connection. Libraries belonging to the OpenSSL program are used for encryption. OpenVPN
uses either UDP or TCP for transferring data.
Patch management
Area of the system management whose tasks include the procurement, testing and installing
of several patches (code changes) for an administered computer system or in such a system.
At the same time, a subprocess of the Security Vulnerability Management whose tasks include
the correction and containment of security holes for Siemens products by means of software
corrections.
PCU
Highly integrated industrial PC for the user interface or system software and user interface of
a CNC.
Phishing
Phishing is the attempt to obtain personal data of an Internet user via fake websites, e-mails
or text messages in order to steal the user's identity.
230
Configuration Manual, 08/2017, A5E36912609A
Industrial Security