tailieunhanh - Concepts in Network Security: LTC Ronald Dodge, Ph.D. United States Military Academy

What does a typical BCS network look like? Most installations today have a dedicated BCS network with centralized control via an operator’s terminal in the facility manager’s office. There is no Internet (or LAN) connection, and thus no IT threat. However, the trend today is toward greater connectivity to enable new services, convenience, and savings on infrastructure costs. Newer buildings have network connections to the Inter- net. But even so, most BCS networks still have few resources that are of value to the typical “hacker”. . | vntaartìaoos virtua ize 0 Concepts in Network Security X86 hardware LTC Ronald Dodge . United States Military Academy vntaartìaoos virtua ize 0 Trends in Network Security Attackers Increasing sophistication Increasing communication collaboration Defenders Increasing complexity Increasing dependency Increasing attrition Decreasing budgets Persistent ignorance increasing awareness more knowledgeable sysadmin Network systems Increasing connectivity Increasing complexity Increasing functionality Increasing computrons Increased application security Activity Increased state and non-state sponsorship Increased patching Increasing probes and Recon by Fire vntaartìaoos virtua ize 0 Trends Another Picture High Low cross site scripting __ . . . . r . BOTnets Intruder denial of service _u_e distributed attacks Knowledge packet spoofing www attacks sweepers . GUI interfaces automated probes network diagnostics backdoors burglaries disabling audil y Attack f session high jacking Sophistication burglaries exploiting known vulnerabilities s password cracking self-replicating code password guessing 1980 1985 1990 1995 .

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