1. LAWN Ron Rusnak r-rusnak@uchicago.edu The University of Chicago Networking Services and Information Technologies

2. LAWN Local Area Wireless/Walkup Network Architecture Local Area Wireless/Walkup Network Architecture –Georgia Tech –John Douglas & Team (john.douglas@oit.gatech.edu) Implementation = MOWER Implementation = MOWER –Mobile Object/Wireless Enabled Router The University of Chicago Networking Services and Information Technologies

3. MOWER Authenticated Router Authenticated Router –Linux 2.4 Kernel w/IPTables Services on router Services on router –DHCP –Firewall (Authenticated Router) –Cache DNS –Web Server –Access Control The University of Chicago Networking Services and Information Technologies

4. MOWER UofC mods UofC mods –Ported to Solaris 5.8 –Access Control = IPF –Ph/LDAP Authentication –Temporary ID capability –Use DHCP messages for pruning The University of Chicago Networking Services and Information Technologies

5. LAWN Advantages Advantages –Moderate Implementation Effort –Users can authenticate with browser –Ability to customize authentication method –Cheap Access Points can be used Disadvantages Disadvantages –Doesn’t scale well –Needs large VLANS or lots of MOWERs. –Limited Throughput The University of Chicago Networking Services and Information Technologies