Siemens IEEE802.11 - Manual (Page 73)

WLAN-IEEE802.11 Tutorial (Maximilian Riegel), 021018-wlan-tutorial.ppt Page 73 © Siemens, 2002
Functions of an integrated access
gateway (Network services)
n
DHCP server for assigning IP addresses to WLAN clients
– Retaining session if user is temporarily out of WLAN coverage
– Detection of session end
n
Policy engine
– Loadable user profiles
– User-specific routing configuration
– Dynamic firewalling rules
n
IP router with NAT engine
– Assignment of private addresses for free services
– Must allow IPSEC connections