1. MV90 IP Data Transport ERCOT Recommendation John Fisher & Jeff Maddox

2. 2 Option 1 – ERCOT WAN MP IP meters are located on MP’s private network MP NAT translates the IP Meters to an ERCOT WAN IP Address ERCOT polls meters over the ERCOT WAN

3. 3 Option 2 - Internet MP IP meters connect to MP network MP presents IP meters to ERCOT through an Internet routable IP address ERCOT polls meters over the secure encrypted IPSEC tunnel

4. 4 Notes Permitting IP meters access to the Internet increases risk –Man-in-the-middle attacks –IP spoofing –Exposing meters to SCADA based attacks (vulnerabilities are an unknown at present) Private networks are more secure and more reliable –Private networks are isolated by the Service Provider from unauthorized users