Designing More Secure LANs

A practical guide to the 3Com LAN Security Architecture

• Introduction
• Purpose of this guide
• Who should read this guide?
• Background
• Is information worth protecting?
• Who to protect against?
• Successful security
• LAN security threats
• Risk assesment
• 3COM LAN Security Architecture (LSA)
• Baseline measures
• Additional counter-measures
• Secure network management
• Network device audit log
• Practical Examples of LAN Security Design
• Increasing LAN availability — protecting LAN services
• LAN service to the desk
• Restricting access — Closed User Groups
• Overcoming broadcasts: secure networks/existing networks
• Tracking network devices
• Proactive device attachment control
• Maintaining information integrity
• Case Studies
• Case Study 1: Designing security into a new LAN
• Case Study 2: Adding security to an existing LAN
• Building blocks
• Further reading

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