Tag: wifi

January 2010 Geek Events

January 2010 Geek Events

I can see a trend forming here…

I wanted to write separate entries for these equally worthy events that happened for the past month. But as it is, January was again as busy as ever. I don’t think I have time to periodically update this blog anymore. Nothing new about that piece of news though, as I’ve been really on and off here since the beginning. Anyway, here’s a peek on 4 cool/informative/interesting events I’ve been to for January. What a way to start the year!

Wireless and Rural Connectivity Technologies and Start-ups (January 06)

My first event of the year was about wireless infrastructure! It was held at the UP TechnoHub on January 6.

The first session of the Kape+Teknolohiya series of talks hosted by the Ayala Foundation and UP-ERDT was graced by Prof. Eric Brewer, PhD. He’s a lecturer at UC Berkeley who also founded Inktomi (now part of Yahoo’s search engine) and built USA.gov (under President Clinton).

In the morning, Dr. Brewer discussed about long-range wireless technologies and its implications and benefits for rural development. He discussed about their research WILDNet (Wifi-based Long Distance Networks) as a low-cost solution for developing countries/regions such as the Philippines. I am impressed when he showcased their achievement as having the longest distance with stable wifi link. From the paper Beyond Pilots: Keeping Rural Wireless Networks Alive [link], they “were able to achieve a total of 6 Mbps bidirectional TCP through- put (3 Mbps each way simultaneously) over single-hop 382 km WiLDNet link between Pico Aguila and Platil- lon in Venezuela.” Ain’t that cool?

Anyway, I noticed that the efforts are nothing new in the country. I remember some two years ago that UP EEE had some OVCRD-funded wifi deployment in the Batanes area [read here]. What i didn’t know was that Dr. Ramos (EEE professor) was part of Dr. Brewer’s research project.

If there is more to be gained with this talk, it’s the labor that Dr. Brewer is spending to spread the awareness that such efforts of providing Internet connectivity to rural areas can in fact change lives and improve communities. He has shown examples in India and Ghana on how it was utilized in medicine and the results were spectacular. More so, the talk opened up opportunities for more discussions with CICT on possibly extending the Batanes project to more rural areas around the country.

In the afternoon, Dr. Brewer talked about his startup company – Inktomi – which started as a simple project at Berkeley. Inktomi was a search engine acquired by Yahoo! It was an interesting talk, where Brewer detailed the rise and eventually fall of the company. It was the perfect kind of talk for a venue like the TechnoHub, being the business incubator of the University.

PS: I so wanted to ask him for mentoring at UC Berkeley! 😀

Event Announcements HERE and HERE.

Asiasource Reunion (January 09)

What else can i say. This was pure fun! Alright, not exactly. The week leading to it was a struggle, since we (the AS3 peeps) are the ones organizing it. BUT we were able to pull it off anyway with everyone’s effort.

Asiasource Reunion gathered the alumni from Asiasource 1, 2, and 3 and their friends at the G2VC Innovation Center in Ortigas. It was a night of games, sing-along, photoshoot, speedgeek, and food pinoy-style. It ended up a successful reunion, although we missed some friends. Anyway, part 2 is coming up soon so do watch out for the Magic Sing Rematch.

1st North Luzon FOSS Conference (January 18-19)

I think this deserves a separate entry, one which I can’t simply do at the moment. Suffice it to say that I was super impressed with the organizers. With little preparation time leading to the event, they were able to attract interesting participants, come up with a sufficient line up of talks for the program, and provide free food and freebies. I was here as part of the Philippine Open Source Network (POSNet). Some of us presented talks on FOSS Success Stories and did lectures on some FOSS applications. It was 2 days of fun and learning. North Luzon is FOSSified!

Mozilla PH Community 2010 Kick-off Planning (January 23)

Met with the Mozilla PH Community, lead by Regnard Raquedan, for the planning session at The Old Spaghetti House (TOSH) in Technohub. It was a simple gathering which started with great food. Everyone knows that an event with great food makes for great outcome. And so it did. The group came up with very exciting line-up of activities for the year, some in conjunction with other Open Source events while some are self-hosted. I can’t post the line up here yet, so do watch out at the Mozilla PH Blog. You can also join us up at the mailing list here.


NOTE: Pics to follow. I want this out there in the void/internet asap.

Wifi Apps for Mac OS X (Snow) Leopard

Wifi Apps for Mac OS X (Snow) Leopard

AirPort_Utility_icon
I have a bunch of wifi applications and widgets installed on the mbp that I use mostly for work. While i only use 2-3 of them on a regular basis, I try to keep them all in my Apps folder since they also come in handy at times, depending on their capability. After upgrading to Mac OS X 10.6 (Snow Leopard), most of them have stopped working due to compatibility issues.

The purpose of this post is to list these apps that are known to be working on Mac OS X 10.5 (Leopard), so I can check from time to time if a 10.6 version (Snow Leopard) have been released.

Read More Read More

Wireless 802.11n Ratified

Wireless 802.11n Ratified

Logo_new_abgn_nodraft_3D_highres

I waited years and years… then it all happened while I wasn’t paying attention. After 7 years of waiting, IEEE 802.11n Wireless LAN Specification was ratified on September 11, 2009 to provide significantly improved data throughput and range. Technically, the standard is called 802.11n-2009, an amendment to the 802.11-2007.

Advantages:
802.11n – even in its draft stage – boasts of improved speed and range. Compared with its predecessor, the 802.11g, wireless-N raises the bar from a bandwidth of 54 Mbps to a ~600 Mbps using 4 spatial streams at a channel width of 40 MHz. wireless-G and all previous versions are using 20MHz frequency only. It is such a relief to finally remove that annoying “draft” thingy in the wifi logo, isn’t it?

Compatibility:
Owners of pre-draft wireless-N devices should not fret, according to Wi-fi Alliance. As vendors have promised, firmware upgrade should do the magic. In fact, Wi-fi Alliance has launched an updated Wi-Fi CERTIFIED N program (see here).

Links:
IEEE Announcement
IEEE News
Reuters: IEEE Ratifies 802.11n
CNET: 802.11n Wi-Fi Standard Finally Approved
Eweek: 802.11n Makes Official Debut
Wikipedia Entry: 802.11n-2009

PS. Sorry for the very delayed post. I wanted to detail the differences, improvements, or other whatnots but it seems it may take longer than expected. I admit that while I am truly exhilarated by the news, I have yet to fully understand the extent of changes from the Draft-2.0 to this final standard. I better start reading the 560-page doc, which can be downloaded from here (for IEEE members).

How-To: Setup IPv6 Connectivity using DD-WRT

How-To: Setup IPv6 Connectivity using DD-WRT

I was bored. Plus it was planned long before anyway. [Why just now? It’s either i have other things to do, or I had to let go of the completely-configured AP to deploy somewhere else.]

So here’s how i set-up an IPv6 connectivity using Tunnelbroker and a Linksys WRT54G running on DD-WRT firmware.

I. Setup an account in Hurricane Electric’s Tunnelbroker.

  1. Signup for an account in TunnelBroker. Be ready to provide information, such as your valid email address. The password will be delivered to your email.
  2. Once you have logged in, click “Create regular Tunnel” under User Functions in the left-hand side of the screen. NOTE: you can also create BGP tunnel (haven’t tried yet)
  3. In the “Setup IPv6 Regular Tunnel” page, input your static public IPv4 address. Note that this should be reachable via icmp before it can be added.
  4. Select the server closest to you. I chose Hong Kong. Then Submit.
  5. Check the Tunnel Details for your newly created tunnel. You are allowed to create a maximum of 4 tunnels for your account.
  6. Read More Read More

WPA Cracked

WPA Cracked

A German graduate student found an exploit using a modified version of the existing attack on Wired Equivalent Privacy (WEP) to provide a slim vector for sending arbitrary data to networks that use the Temporal Key Integrity Protocol (TKIP). This attack is now known as the Tews/Beck Method.

If you’re using WPA-TKIP, there’s a simple solution: use AES.

Am i just lucky i always choose AES over TKIP? Anyway, I can’t remember where i read it first. But you can read more at Ars Technica.

Terms:
TKIP – Temporal Key Integrity Protocol
AES – Advanced Encryption System