Topic: Planned ESPDS PDA Maintenance at NSOF OPS site to Depreciate Transport Layer Security (TLS) version 1.0.

Date/Time Issued: June 04, 2019 1730Z

Product(s) or Data Impacted: Connections to PDA at NSOF OPS site that do not support Transport Layer Security (TLS) 1.1 or greater will fail.

Date/Time of Initial Impact: June 05, 2019 1400Z

Date/Time of Expected End: N/A

Length of Event: N/A (change is permanent)

Details/Specifics of Change: The PDA NSOF OPS environment will depreciate Transport Layer Security (TLS) version 1.0. FTPS users will only be able to connect using TLS version 1.1 or greater. FTPS connections must be configured to encrypt the control channel only. They should not be configured to encrypt the data channel. Users who push data to NSOF OPS or pull data from NSOF OPS will be impacted if they are not supporting TLS 1.1 or greater.

Contact Information for Further Information: ESPC Operations at and 301-817-3880. Also

Web Site(s) for applicable information: N/A

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