1、Lessons Learned Entry: 1148Lesson Info:a71 Lesson Number: 1148a71 Lesson Date: 2000-02-01a71 Submitting Organization: HQa71 Submitted by: David M. LengyelSubject: International Space Station (ISS) Program/Computer Hardware-Software/Downlink Encryption Description of Driving Event: Potential Inadequa
2、te International Space Station (ISS) Downlink EncryptionLesson(s) Learned: NASA has taken positive steps for upgrading security on the ISS uplink by adopting a more robust encryption scheme. The downlink and the links between the Mission Control Centers (MCCs) in Houston and Moscow, however, are not
3、 encoded.Recommendation(s): Conduct an overall threat analysis of the Space Station downlink and its interfaces to both MCC Houston and MCC Moscow.Evidence of Recurrence Control Effectiveness: NASA concurs with the ASAP recommendation. The ISS uplink is critical to the safety of the ISS and contains
4、 encryption and processing safe-guards to ensure that it is protected. Automated commanding will not be downlinked. If the downlink were compromised, the result would be momentary transmission of erroneous data to flight controllers, who would resolve the erroneous data prior to responding. The link
5、 between the Houston and Moscow control centers is a part of the control center network and undergoes continuous security analysis and protective upgrades. The Security Analysis and Response Team, a multilateral ground segment security team chartered by the ISS Programs Ground Segment Control Board,
6、 conducts this activity. This team initiated an analysis of the link between MCC-Houston and MCC-Moscow in 1999, and is scheduled to be completed in Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-July 2000.Documents Related to Lesson: N/AMission Dir
7、ectorate(s): a71 Space Operationsa71 Exploration SystemsAdditional Key Phrase(s): a71 Aerospace Safety Advisory Panela71 Computersa71 Ground Operationsa71 Policy & Planninga71 Risk Management/Assessmenta71 Securitya71 SoftwareAdditional Info: Approval Info: a71 Approval Date: 2002-03-18a71 Approval Name: Bill Loewya71 Approval Organization: HQa71 Approval Phone Number: 202-358-0528Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
