Re: [WIRELESS-LAN] USB / Electric charging stations
You're only paranoid until the first high-profile exploit/breach. http://syncstop.com/ http://int3.cc/blogs/news/9094591-usb-condoms On Tue, Jan 27, 2015, at 11:16, Julian Y Koh wrote: > On Tue Jan 27 2015 11:47:50 CST, "Odtohan, Cathi" > wrote: > > > > At one point we considered something like KwikBoost charging stations > > http://www.kwikboost.com/ > > but people balked at the price. We did put a desktop multi-device charger > > in the student commons area and locked it down to a tabletop. > > I think I’ve seen a few of those KwikBoost stations in our student > center. > > I know I’m in the paranoid camp, but I wouldn’t trust a random USB > charger these days. I carry my own AC adapter and USB cables and plug > into 110V AC outlets only. I also have a Mophie Juice Pack for my phone > that Apple decided to give me one day after they said they had kept me on > hold for too long. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] SV: AppleTV in production
On Tue, Dec 2, 2014, at 23:41, Anders Nilsson wrote: > Hi all, > > Anybody know what channels are used in Europe? > Channels 149/153 are not supported in the EU as far as I know. According to http://en.wikipedia.org/wiki/List_of_WLAN_channels#5.C2.A0GHz_.28802.11a.2Fh.2Fj.2Fn.2Fac.29.5B17.5D 36, 40, 44, 48, 52, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Alternatives to Bonjour
On Wed, Aug 28, 2013, at 10:18, Chanowski, John wrote: > Does anyone know of an apparatus/application that allows > mirroring/streaming to a TV screen wirelessly that does not depend on > Bonjour or equivalent protocols and instead relies on more enterprise > friendly protocols? Does anyone know if anything like this is being > developed? WiDi? http://en.wikipedia.org/wiki/WiDi Not sure how it works, but it's something I've seen around. My guess is it bypasses network infrastructure, making it yet another interfering device in 2.4GHz or 5GHz. Can't find anything on how it actually works in a cursory search though. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Very high number of wireless devices returning from break
We've seen an increase in number of devices associating as well. Nothing nearly as impressive as everyone else's numbers in terms of total quantity, but the jump for us from peaks of 300 associated to over 400 associated clients is definitely noticeable. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Aruba antennas and mounts
On Thu, Jan 19, 2012, at 12:16, Rick Brown wrote: > Oh great listserv, I would like your assistance. We are planning on > moving from Cisco to Aruba. I wondering if anyone is using outdoor MIMO > antennas and articulating mounts that are not made by Aruba. The mount > that they have suggested is a little heavy and bulky so we'd like to try > to identify something else. For the Cisco antennas we were using a > Cushcraft universal articulating mount but eventually started having to > modify those to make them work. We've used Terrawave antennas, specifically these: http://www.terra-wave.com/shop/80211n-245-ghz-6-dbi-mimo-patch-antenna-with-rptnc-plug-connector-p-1347.html The articulating mount feels a bit on the flimsy side though so I'm not sure I'd use it anywhere there would be significant wind loading. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Band Selection
On Tuesday, November 15, 2011 10:57 AM, "Chris Wandell" wrote: > I am investigating the use of Band Selection on our wireless network here > an Binghamton University. > > What problems have you encountered? We tried turning on band selection, but discovered the undocumented behavior that it is mutually exclusive with aggressive load balancing (confirmed through a TAC case). Hopefully they've added that to the documentation as well. We require aggressive load balancing for some of our laptop labs, so we had to turn off band selection. We've got 4404s running code version 7.0.98.0. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
HP Wireless questions
We're looking at HP wireless (currently Cisco), and had a few questions. If you've got experience and are willing to answer, I'd definitely appreciate it. Feel free to reply on-list or off... Did you migrate from Cisco to HP, start out with HP, or migrate from some other wireless provider? Or did you move from HP to someone else? If you migrated, why? How large is your deployment? Were there any issues setting up a captive portal with HP? Any issues with RADIUS interoperability? How is your performance, coverage, and client density? Do you take advantage of client load balancing and band steering, and do those features work well? Thanks! -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Turning off TKIP to enable N
On Wednesday, September 28, 2011 1:40 AM, "Joshua Coleman" wrote: > Cisco Wireless shop as well and you don't need to to turn off TKIP to > allow N your AP's just need to support N Huh...I must've misread the docs, I thought they meant you can only have an open network or AES encryption to support N rates. I guess N clients will only use AES, but non-N can still use TKIP then? -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Turning off TKIP to enable N
All these graphs showing everyone's N clients is making me feel way behind the times. We still have TKIP allowed on WPA. Has anyone else recently gone through the transition of disabling TKIP in order to enable N? If so, what issues did you run into with older equipment (both student and institution owned)? We're a Cisco wireless shop, I've got WCS installed but haven't had time to set up any kind of reporting on it yet. I know the few times I've remembered to check there haven't been any TKIP clients, but I'll need more than just a few slices in time to be sure. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] MIMO Antennas
On Thursday, September 15, 2011 3:08 PM, "Branden Kirk" wrote: > 1) I am wondering what others are using as their preferred choice for > external MIMO Patch Antennas and external MIMO Omni Antennas. We're using Terrawave dual-band N patch antennas with Cisco 1252 APs, they're working out fine for us. http://www.terra-wave.com/shop/80211n-245-ghz-6-dbi-mimo-patch-antenna-with-rptnc-plug-connector-p-1347.html -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] AP Enclosure
On Thu, 17 Mar 2011 11:39 -0400, "John Kaftan" wrote: > Has anybody found a good solution for AP enclosures? Our older Residence > Halls do not have drop ceilings so we cannot hide the APs. We have found > that most things visible get destroyed. We have no residence halls so I can't comment on damage in those areas. The only time we use enclosures are when the APs are located outdoors. We've been using these: http://www.sparcotech.com/cgi-bin/commerce.cgi?preadd=action&key=SP-NEMA-LR-IOM Pretty inexpensive and they come with weathertight cat5 passthrough grommets as well as weathertight bulkhead-mounted RF connectors with pigtails on the inside (so you can attach the antennas on the outside of the enclosure). -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Wireless thermostats and Wifi coexistance
On Fri, 11 Mar 2011 15:28 -0800, "Branden Kirk" wrote: > I'm unfamiliar with the technology, but from what I've read ZigBee uses > channels separate from the non-overlapping 1,6,and 11, but if you are using > channels between 1,6,11 aren't you then overlapping with them? I've also > read something about using channel 15 and 20 which I didn't know existed. > Is anyone familiar with these products and can confirm for me if there > is reason for concern or not? I just skimmed through a Zigbee whitepaper on co-existence with 802.11 networks: http://www.zigbee.org/imwp/download.asp?ContentID=11745 It sounds like they're claiming Zigbee uses relatively narrow chunks of spectrum, and can fit between 1, 6, and 11. Whether or not that's true in practice, I don't know, but the carrier-sense feature of Zigbee radios should keep them from stepping on 802.11 traffic. If you have access to a spectrum analyzer (even something relatively cheap like a WiSpy or Ubiquiti AirView) and a demo Zigbee thermostat, it should be easy to check quickly. There are also Zigbee radios that operate in the 900MHz band. Here's another paper on Zigbee and 802.11 networks (focusing on a hospital environment): http://nrlweb.cs.ucla.edu/publication/download/538/a5-hou.pdf -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Mount hidden or in plain view in dorms?
On Thu, 2 Dec 2010 15:40:08 -0500, "Peter P Morrissey" said: > We've talked about doing this in some cases. Do you paint over the lights > by any chance? > This came up in a case where we have AP's that might need to be installed > above a stage in a darkened theatre where a light show may or may not be > an appreciated enhancement to the performance. We masked off the lights so we could use them for quick troubleshooting, but if necessary we can stick a strip of black electrician's tape over them. Ours are out of line-of-sight when looking at the stage, and blend in with the indicator LEDs for amplified speakers and other assorted electronics you find in a theater. One other thing to keep in mind for a theater is the more-crowded-than-usual RF space. There are wireless intercoms, assisted listening systems, and wireless stage mics. Fortunately (and surprisingly), none of the other gear in our theater is in the 2.4GHz or 5GHz space. Our assisted listening system is VHF, stage mics look to be UHF (either 460MHz or 900MHz, they've got log periodic antennas so I can't be sure), and the intercom system is a 1.9GHz DECT-based setup. We also provided another SSID just for the theater, as they use wireless PDAs for some lighting control/setup (and are looking into iPads for sound control) and we didn't want to have interference issues between their stand-alone AP and our system. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Mount hidden or in plain view in dorms?
Oh, one tip on getting APs and antennas to blend in, you can paint them easily as long as your paint does not have metallic or carbon particle based dye in it. We've done so with the indoor APs in our new Theater Arts building so that the APs blend in with the black walls and ceilings of the stage and control room areas. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Outdoor N access
On Thu, 2 Dec 2010 10:51:15 -0800, "Entwistle, Bruce" said: > We are currently looking at different ways to cover outdoor areas as we > look to migrate to N wireless. In our existing B/G installation we have > installed APs inside buildings and run coaxial cable to antennas located > on strategic positions on the outside of the building. However as we > look to installing N APs the idea of two antennas and six cables on the > outside of the building does not seem aesthetically pleasing. I would > appreciate anyone who is willing to share their experience with a similar > situation. We ran a pair of Cat5e per AP (one for data/power, one for serial console) to the outside of the building, and housed the APs in weatherproof boxes. Each box has 6 RF bulkhead connectors that poke out the bottom which an external antenna connects to. The boxes and antennas are mounted directly to the exterior of the building. If you can conceal it a bit under some protruding eaves, it's not as noticeable, but it certainly isn't all that attractive if it's just sticking out in the open. We used Cisco 1252 APs, plastic enclosures from sparcotech.com, and dual-band MIMO directional antennas from terrawave.com. We did consider the option of housing the APs indoors and running feedline out to the antennas, but the increased number/size of building penetrations needed for the feedline as well as signal loss through the feedline made the externally-mounted APs preferable. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] WiFi blockers in classrooms
On Thu, 18 Nov 2010 20:52:58 +, "Methven, Peter J" said: > If you have some lead laying around, you could line the rooms and turn > the APs off during lecture times... But as other respondents have said > it's not really a technology issue, you design your WIFI for full > coverage for a reason. Not lead, but a grounded conductive mesh: http://en.wikipedia.org/wiki/Faraday_cage Use something with a fine enough mesh to block 5GHz (.5" spacing is smaller than 1/4wavelength at 5GHz), line all surfaces of the room (floor, ceiling, walls). Turn off the APs in that room when they aren't needed. Side benefit: Cellular telephone signals are also blocked! Of course, installing said mesh is not going to be a quick or easy task. Hmm...I wonder if wireless location services would provide a mechanism to allow or deny access based on a client's location? -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Macbooks with odd Airport MAC addresses
On Mon, 20 Sep 2010 17:51:46 -0500, "Hao, Justin C" said: > your wlc logs go back to may and june? wow.. our wlc logs barely contain > information from the last hour much less a day or more.. heh (i'm > assuming you have the logs pushed somewhere else for long term storage) Yeah, most of our gear logs to syslog on a box that has a bunch of storage. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] Macbooks with odd Airport MAC addresses
On Mon, 20 Sep 2010 18:21:37 -0400, "Cortes, Diana" said: > Has anyone encountered any Macbooks with the following MAC addresses: > 00:11:22:33:44:55? We believe this may be an Apple bug as we have found 2 > on our campus already with the exact same MAC address. That's the same MAC address I have on my luggage! I just checked through all of our Cisco WLC logs, that address made several appearances in May and June of last year, but not since then. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
