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Siemens IEEE802.11 User Manual

Page 73

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WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt

Page 73

© Siemens, 2002

Functions of an integrated access
gateway (Network services)

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DHCP server for assigning IP addresses to WLAN clients
– Retaining session if user is temporarily out of WLAN coverage
– Detection of session end

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Policy engine
– Loadable user profiles
– User-specific routing configuration
– Dynamic firewalling rules

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IP router with NAT engine
– Assignment of private addresses for free services
– Must allow IPSEC connections