1. NHIN-Direct SMTP/Email Notes 6/8/2010

2. Why we chose Email Concepts match the charter exactly Implementations match the charter exactly* Well understood by end users Well understood by existing ISP industry Well understood by existing vendors Almost no new code - security agent only (same code that is a subset of other implementations) ISPs can participate with their existing infrastructure and skill set

3. Implementation Overview Really, it’s just email. Security agent plugged in at any point in the pipeline between Client (Source) and Server (Source HISP) Channels can be TLS- encrypted to protect routing information Email Client EHR, PHR Email Server Email Server Email Client EHR, PHR SMTP, MAPI POP3, IMAP, MAPI SMTP POP3, IMAP, MAPI SMTP, MAPI SSHDHD

4. Key Technologies Content Packaging: RFC 5322 + MIME Addressing: endpoint@domain Security & Trust: S/MIME HISP-HISP Transport: SMTP(S) Client-HISP Transport: SMTP, POP3, IMAP, MAPI, etc… Certificate distribution: DNS CERT

5. Structure, metadata and innovation Scalable structure – Body Text (always available, Individual Involvement) – Unstructured attachments (PDF) – Structured attachments (CCx, SCRIPT, etc.) – Explicit metadata MIME part (XDM) Transport has proven itself over 20+ years Innovate in the payload

6. Security Agent S/MIME Sign and Encrypt of messages fully supports requirements of Security & Trust Workgroup Certificate distribution by DNS CERT records Scalable approach to PKI Management – starts easy as TLS, adds ability to scale down to individual – HISP manages certificates – Organization manages certificates – Individual manages certificates Ability to use across implementations demonstrates the value of taking a transport-independent approach

7. Sample Message “On the wire” thread-index: AcsGjnbwhdd7B5CFQSuA2mgm0a8D9Q== Received: from umeshma4 ([131.107.0.72]) by nhind.hsgincubator.com with Microsoft SMTPSVC(6.0.3790.4675); Mon, 7 Jun 2010 15:12:05 -0700 Message-ID: From: "Dr Biff Hooper" To:"Dr. Alsip", daa858cb-a066-4c76-885f-ffa67242d6c3.9c24b165-7429-4ee2-a646-3bd7986b9968@hvnhind.hsgincubator.com Subject: Fw: Patient Referral Date: Mon, 7 Jun 2010 15:11:44 -0700 Organization: Biff's Clinic Content-Transfer-Encoding:base64 MIME-Version: 1.0 Content-Type:application/pkcs7-mime; smime-type=enveloped-data; name="smime.p7m" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.4657 Content-Class: urn:content-classes:message Priority: normal Return-Path: X-OriginalArrivalTime: 07 Jun 2010 22:12:05.0717 (UTC) FILETIME=[76B95050:01CB068E] MIMDtx4GCSqGSIb3DQEHA6CDA7cOMIMDtwkCAQAxggJvMIG6AgEAMCMwFTETMBEGA1UEAxMKVU0t QU1BTEdBMQIKFmbg8QAAAAAAGDANBgkqhkiG9w0BAQEFAASBgMrVicD/tjx0ZZ0daK0nN2GMLqJg FalBuKGxe+ZZATxHxJPCD4rg80pI5vLt/s8A3sRrCrrOSniwpl1kzg6Nunlq6wz/PpK7QTVofwpt H0ZGYMRin/CxQD4tlf9YFmLuXNdvrvG7AkgRdMS7MZZzBliEdCdUZncb6qnyEf9Y1JlsMIIBrgIB ADCBlTCBhzELMAkGA1UEBhMCVVMxETAPBgNVBAgTCE1pc3NvdXJpMQ8wDQYDVQQKEwZDZXJuZXIx... fEL7VbSd34tez2pUHCL9FbtRBWReSW1hcLEvlsJjeCBaVAKFrW6VZqzTt+M=

8. Reliable Messaging Store and forward model is critical in a massively distributed network – because it is likely that destinations will be unavailable – Daily issues, upgrades, disaster, remote Ability to route across intermediate hops will be important in a heterogeneous network – Corporate intranet gateways

9. Why Existing Services Matter Operations – Administration and provisioning – Backups – System health monitoring – Patch and upgrade process Security history, minimal new attack surface Multi-tenant issues worked out Training and industry skill set – admin, NOC, customer service Account support: quota management, billing, fraud detection, etc.

10. Demo Topology

11. Demo Technologies Clients – Cerner Millennium – Thunderbird – Outlook – Windows Live Mail – HealthVault DNS – Bind Servers – Windows SMTP – Postfix Operating Systems – Amazon EC2 – Windows Server – Linux

12. Demo