NAT_S615
Entry ID: 109744660, V1.1, 08/2017
Siemens AG All rights reserved
Table of Contents
Warranty and Liability ................................................................................................. 2
1 Introduction ........................................................................................................ 4
2 UseCases at a Glance ....................................................................................... 6
2.1 Static routing ........................................................................................ 6
2.2 Web server access via NAPT............................................................... 8
2.3 PG functions with NETMAP and destination NAT ............................. 10
2.4 NATing entire subnets via NETMAP and Destination NAT ................ 13
2.5 Series machines with NETMAP and destination NAT ....................... 16
2.6 Cross communication for series machines with NETMAP and
destination NAT .................................................................................. 19
2.7 Connection to control system with source NAT ................................. 22
2.8 Source NAT from VPN tunnel ............................................................ 25
2.9 S7 connection with double NAT ......................................................... 27
3 Valuable Information ....................................................................................... 30
3.1 General principles .............................................................................. 30
3.1.1 Classless Inter-Domain Routing (CIDR) ............................................ 30
3.1.2 Connection directions in the network ................................................. 30
3.1.3 NAT mechanisms ............................................................................... 31
3.1.4 Firewall and NAT ................................................................................ 32
3.2 S7 connections and NAT.................................................................... 33
3.3 TIA Online functions and NAT ............................................................ 33
4 Appendix .......................................................................................................... 35
4.1 Service and Support ........................................................................... 35
4.2 Links and literature ............................................................................. 36
4.3 Change documentation ...................................................................... 36
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