Why is a LAN a LAN? -- Architectural considerations for LAN security protocols -- The impact of security service selection for LANs -- Access control and authentication in LANs -- Secure relays: An alternative approach to LANSEC -- MAC layer security measures in local area networks -- OSI network security and the NTCB -- A security related architecture for a TNB supporting confidentiality and integrity based policies -- Covert channels in LAN protocols -- Encapsulation security protocol design for local area networks -- Modeling A LAN security server -- Network management and diagnostics for secure LANs.