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Network Segmentation. KTAC – Dan Pelton, Tony Bishop, Tom Herbstreith. Agenda. 1. Plant Layout Review. 2. Control Network Specifications. 3. Control Network Strategies. 4. Demo 9300-ENA (NAT). Company – Kendall Brewing Company. Kendall Brewing Company. Raw Material Area. Brewing Area.
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Network Segmentation KTAC – Dan Pelton, Tony Bishop, Tom Herbstreith
Agenda 1. Plant Layout Review 2. Control Network Specifications 3. Control Network Strategies 4. Demo 9300-ENA (NAT)
Company – Kendall Brewing Company Kendall Brewing Company
Control Network Specifications 1. Each Control Panel has a Switch 2. Equipment shall be accessible from the Plant Network 3. Equipment shall be interlocked 4. Network Traffic shall be controlled 5. Security / Limited Access
Plant Network Layout per I.T. Filling Brewing Shipping Raw Material Packaging VLAN’s PC’s = 101 – 10.10.172.XX Phones = 102 – 10.10.178.XX Video = 103 – 10.10.188.XX MDF Finished Goods IDF Office / Data Center
Network Options ???? 1. Physical Controls Network with 1 Convergence Point 2. Vlan’s using existing plant back bone 3. Network Address Translation (NAT) 4. CIP Bridges
Physical Controls Network Brewing Filling Shipping Raw Material Packaging VLAN’s PC’s = 101 – 10.10.172.XX Phones = 102 – 10.10.178.XX Video = 103 – 10.10.188.XX Plant MDF IDF Finished Goods Controls MDF Office / Data Center IDF Control Panel
Physical Controls Network Level 4 & 5 DMZ Level 3 Level 2 Brewing Area Filling Area Packaging Area Level 0 & 1 System 1 System 2 I/O I/O PLC PLC HMI HMI VFD Drive VFD Drive
VLAN’s Filling Brewing Shipping Raw Material Packaging VLAN’s PC’s = 101 – 10.10.172.XX Phones = 102 – 10.10.178.XX Video = 103 – 10.10.188.XX MDF Finished Goods IDF Office / Data Center Control Panel
Vlan’s VLAN’s PC’s = 101 – 10.10.172.XX Phones = 102 – 10.10.178.XX Video = 103 – 10.10.188.XX Brewing Area = 201 – 192.168.1.XX Filling Area = 202 – 192.168.5.XX Packaging Area = 203 – 192.168.15.XX WAN Internet Level 4&5 Plant MDF Level 3 Plant IDF’s 102 201 102 101 101 202 202 202 201 201 103 203 102 101 203 Stratix 5900 - Security Level 2 Brewing Area Filling Area Packaging Area Level 0 & 1 System 1 System 2 I/O I/O PLC PLC HMI HMI VFD Drive VFD Drive
Network Address Translation (NAT) Filling Brewing Shipping Raw Material Packaging MDF Finished Goods IDF NAT Office / Data Center Control Panel
What is NAT? Short for Network Address Translation, an Internet standard that enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic.
What is the 9300-ENA? The uplink and local ports are used to translate between 2 networks. ‘ENA’ means Ethernet Network Appliance The ENA is a three-port network device that translates IP addresses between 2 networks. Network address translation is called ‘NAT’.
Ethernet Interfaces (ports) • The two main Ethernet ports are called ‘uplink’ and ‘local’. Customer traffic flows through these 2 ports. • Other names for these 2 ports are: • Outside or public (uplink) • Insideor private (local) • The ‘Config’ port is intended as a secure port if remote (network) configuration is not desired.
Basic Example This example is part of the ENA web sever.
Machine to Machine Example Messages can go from any source (Uplink or Local networks) to any destination if the addresses are in the table(s).
Functionality Supported • Functionality supported • RSLogix5000, HTTP, RSLinx, FTView, unicast I/O and produce tag, unicast EtherNet/IP Safety (with the exception of 1791ES devices), web browsing, ping, etc. • Limit of 2 levels of NAT (2 ENAs in a linear topology) • IP addresses in the NAT table will be translated. All others are blocked. • Functionality not supported • Multicast is not supported • CIP sync* (aka. PTP, IEEE1588) and CIP Motion always uses multicast. • Multicast is an option for Safety EIP and standard EIP. * In addition to the ENA not supporting multicast, the ENA was not designed to support any CIP sync feature, including ENA latency offset (input to output latency).
Network Address Translation (NAT) Level 4&5 Plant MDF “Plant I.T. will Assign Available IP Addresses” Level 3 Plant IDF’s Level 2 Stratix 5900 - Security Note: The the Stratix 5900 and 5700 Support NAT 9300-ENA - NAT Level 0 & 1 Brewing Area Brewing Area System 1 System 2 I/O I/O PLC PLC HMI HMI VFD Drive VFD Drive
CIP Bridge Filling Brewing Shipping Raw Material Packaging VLAN’s PC’s = 101 – 10.10.172.XX Phones = 102 – 10.10.178.XX Video = 103 – 10.10.188.XX MDF Finished Goods IDF Office / Data Center Control Panel Second ENxT required in each 1756 Chassis
CIP Bridge Level 4&5 Plant MDF “Plant I.T. will Assign Available IP Addresses” Level 3 Plant IDF’s For Secure Access Use a 1756-EN2TSC Level 2 Level 0 & 1 Brewing Area System 1 I/O PLC HMI VFD Drive