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本文介绍对X.25网络威胁及为了对抗这些威胁采取的端一端加密、链路加密和安全管理的措施。文章还简述用于分组网的安全标准和美国DDN、Tymnet和英国市政分组网的保密概况。
This article describes measures for X.25 network threats and end-to-end encryption, link encryption, and security management to counter these threats. The article also outlines the security standards used for packet networks and the confidentiality profiles of DDN, Tymnet and the UK municipal sub-network in the United States.