1 Wireless Update Byron Early & Chad Burnham University Technology Services January 12, Westnet Meetings

2 Overview of Topics General Overview of Current Wireless Deployment at DU Wireless Point-to-MultiPoint Backbone Links Upgrade Wireless Management Software (Airwave)

3 Expanding DU: Most new laptops have built-in Wi-Fi  a/b/g “Tri-Mode” Student Survey Results: They want more “wireless hotspots” Several requests for wireless coverage inside dorm rooms (currently 10/100 ports) Faculty/Departmental Requests: Classroom Flexibility (indoors & outdoors) Conference/ Meeting Areas

4 Expanding DU (cont.) Current Installed Base: 257 Access Points/ Bridges 54 wireless VLANs

5 Upgrading APs from b to DU

6 Supporting Wireless Clients  Devices Supported: Windows XP Pro and Mac OS 10+ ONLY !  Wireless Radio Cards Supported: Most are built-in now – “ALL” supported NO ISSUES during Orientation 1200 new students, 99% laptops w/ built-in Wi-Fi  PDAs becoming VERY popular among DU community Not officially supporting yet – Alpha Testing Mode

7 Supporting Wireless Clients (cont.) PDA Connectivity Options No VPN client provided by Cisco AnthaVPN (old Movian, recommended by Cisco) Very Expensive ~ $90 per client Built-in VPN (PPTP or L2TP over IPsec) WebVPN: works on Pocket Internet Explorer 2003 ONLY Not supported on PDAs running PalmOS

8 Web VPN Client Limited application capability MUST stay within browser window (No streaming, IM, etc.) SSL VPN Client (VPN 3000 Rev: 4.7.2) Same functionality as VPN client!! Only supported under Windows 2000/XP IE, Netscape, Mozilla, and Firefox Active X Controls or Java Required Supporting Wireless Clients (cont.) WEB VPN Update

9  DU provides network access via wireless links to: Several University Housing Buildings Most Greek Houses Wireless Point to Multi-Point Backbone Links

10 Wireless Point to Multi-Point Backbone Links (cont.) Reason for Upgrading Replace Legacy Equipment (Orinoco OR1100s) Originally installed to support only a few users per house – NOW 99% of residents have laptops Performance Increase Move backbone links to unlicensed “less crowded” air space (802.11a) Increase the throughput (11Mbps to 54Mbps)

11 Proxim MP-11a MP-11a: Lowest Cost Uplink Option Others: Milliwave, Laser, etc. - $$!! MP-11a Architecture Star Network Design (vs. Mesh)

12 Proxim MP-11a (cont.) Benefits Uses a “polling” protocol (WORP) to share its medium vs ’s CDMA/CA Mbps with DDRS Data rate adjusts dynamically based on signal strength value. This helps compensate for temporary link degradation (heavy snow/rain) maintaining connectivity BUT at lower data rates. Separate data rates for each link One “slow leg” does NOT reduce the data rates of the others

13  BU – SU mutual authentication  Prevents man-in-the middle attacks and rogue SUs  128-bit AES between BSU and SU  802.1Q VLAN Support (256 Vlans/BU)  Storm Thresholds (packets per second)  Protects against network overloading Proxim MP-11a (cont.)

14 Proxim MP-11a (cont.)  MP11a Versions:  MP11 Base Unit (BU)  Supports up to 250 SUs  MP11 Subscriber Unit (SU)  MP11 Residential Subscriber Unit (RSU)  Up to 7 Mac-Addresses (clients)  No PoE  Rugged and Non-Rugged Versions

15 MP-11a NON-RUGGED

16 MP-11a RUGGED BU w/ external antenna SU w/ built-in antenna

17 Wireless Network Management Proxim dropped support of WiNMA (mgt. soft) They now recommend WaveLink DU selected “Airwave” after several vendors, including WaveLink WaveLink was less expensive, but didn’t have key features: RADIUS Integration Legacy Equipment Support Aid in RF troubleshooting and capacity planning Access via HTTP/S MP11a SUPPORT (as of Summer 2005)

18 Airwave – Radius Integration

19 Airwave – Radius Integration (cont.)

20 Airwave – Capacity Planning

21 Airwave – Capacity Planning (cont.)

22 Rapids Rogue AP detection via fingerprinting A LOT of false positives since we turned it on. Airwave Wireless Site Plan (AWSP) Drag and Drop APs into your floor plan AWSP displays RF coverage information What about furniture, bldg material, etc. ???? Visual RF Creates coverage maps of wireless networks Shows physical location of users in the network and potential rogue access points. Airwave – New Products

23 QUESTIONS ????