Eduroam Wifi Service

If you have used the Hopkins wifi or GuestNet system at Hopkins, you may have noticed a third option called eduroam lurking around in the "available networks" list. Aside from a quick email sent by the IT department sometime during the fall 2013 semester, stating that it is a new site for visitors to use while on the Hopkins campus, not much is known about the service. After some digging, the STS TechBlog is happy to help summarize the important information you need to know about Eduroam.

Eduroam as a name is made from combining two words: education and roaming. The idea behind the creation of eduroam in general is that visiting students are somewhere between a Hopkins student and a non-affiliated campus visitor, and therefore exist online somewhere in between the Hopkins wifi and GuestNet. The eduroam service is available to every student from any US institution, or more generally anyone who has an email address that ends with @.edu. CORRECTION: It can be used from any email address associated with a participating eduroam site, not just @*.edu.

The eduroam system is able to take the information from that visiting student's home institution and authenticate it on a server-system stored at Hopkins. It's also a way for the home institution to continue to provide free wifi access for computers and smartphones to their students, faculty, and staff, even when their affiliates are on the other side of the world!

Eduroam is managed by an independent company with academic partners all over the world. The company was started in 2003 by a task force at TERENA focused on mobility, specifically to provide "roaming network access across research and education networks." After a series of extensive tests in Europe (where the company is based), other countries and institutions started to join list of partners. In 2010 the membership group became so large that a Governance Committee was formed. This committee is made of nominated members from North America, Europe, and Asia-Pacific, which goes to show how far this company has spread in only 7 years. A list of world partners can be found at this link, and a list of partners in the USA can be found using this link. For more information on eduroam's formation or technical aspects, please visit their website.

If you are hosting a friend from another school at Hopkins, all he or she needs to do is set up her mobile device or laptop to recognize the eduroam system, and then sign in using her credentials. Remember how you had to change features and check off boxes to be able to use the Hopkins network? It's the same thing for eduroam with some minor adjustments. Note that these changes should be made according to the home institution's system, not necessarily the Hopkins system. 

You will need:

• TCP/IP: DHCP
• EAP type of the home institution
• Network authentication: WPA2
• Data encryption: AES
• Authentication method/protocol of the home institution
• Certificate authority of the home institution

When your friend logs in, he or she should use his or her full user ID at the home institution as the username and the password associated with that account. For example, the full username is jhopkin1@jhu.edu and my password would be laX.bro1876 (just saying). If you want to connect to the eduroam system at Hopkins as a Hopkins student, then you will need the following:

• TCP/IP: DHCP
• EAP type: PEAP
• Network authentication: WPA2
• Data encryption: AES
• Authentication method: MSCHAP-v2
• Certificate authority: Comodo/AddTrust External Root CA
• Server name: freeradiuspilot.win.ad.jhu.edu

To use eduroam at an institution in which you are the visitor, you will need to acquire information regarding the network authentication type and data encryption method of the home institution. Don't forget to use your full username! Everything else will be the same as if you were at Hopkins yourself. 

If you have any questions or issues, feel free to comment below or go to the Technical Assistance center in the basement of Garland Hall. Now get traveling!

Google's Chromebook

Starting its intense advertising in November and continuing up until 2014 began, Google has been pushing their Chromebook for months. And it's working; Chromebooks were the top selling laptop on Amazon.com during the 2013 Christmas season. To be honest, I myself am writing this blog post from my Chromebook, but I got mine in September, and unlike the three HP computers I've gone through in 3 years due to "irreparable manufacturing errors," I have never had a problem with my Chromebook.

The Chromebook is made by many manufacturers: Samsung, Acer, HP, Google, and Lenovo. Toshiba is coming out with its model later this year. The cheapest is the Acer model for about $200, and the most expensive is the Google Pixel, which retails for $1300. I have never tried that model out, but according to all the reviews online, it ranks very highly on their lists of "nicest computers ever used." Plus it's a touchscreen. I bought the Samsung model over Amazon after some research and debate, not only between Chromebooks but between the Microsoft Surface tablet as well.

The Chromebook arrived! It has an 11.7 inch screen and weighs about 2 pounds. Let's turn it on and see what happens.

I needed something that would allow me to connect with the internet in my apartment and in general areas on campus, but was also portable and had a keyboard. I bought the Samsung Chromebook for about $250, which is so much cheaper than both the Macbook Air and the Microsoft Surface tablet. It arrived the next day, and I immediately started to use it. Setting it up for the first time was super simple, since all it asked me to do was log in to my Google account. Turning it on took about 5 seconds in total. The Chromebook has a Linux based OS, and everything on it is connected to a larger cloud storage unit. For more information on Linux and clouds, see previous blog articles here and here.

Setting up the options and entering my information. After this I signed into my Google account and finally had a computer that I could use in my apartment. I took my Chromebook to a conference in LA instead of my laptop, and I could carry it around with me the entire time. 

The critics of Chromebooks have been complaining that "Chromebooks can't do anything without an internet connection," "they're cheaply made," and "the only apps you can run must be Chrome-based from the Chrome Store," among other things. The truth is every single one of these things is right. Without a Wifi connection, I'm only allowed to write essays in Google Docs Offline, or play very simple games that hardly link to anything. (Note: My Samsung also sells as a more expensive model that includes 3G capabilities, but since you have to pay a monthly fee to use the network, and since I'm usually connected to the Hopkins Wifi anyway, it was a poor investment for me to have made. Still, the business persons of the world may benefit from this 3G ability.) The Chrome Store is not nearly as vast or varied as the Apple Store in terms of apps, and this laptop is made from plastic and some metal chips inside, so it scratches easily. But I knew all this before I bought the Chromebook, and since it's $250, if it gets ruined, stolen, or lost, it's not the end of the world.

If you as a student have to work in terminal or analyze anything in Matlab, C, Fortran, Phython, or IDL, then stay away from the Chromebook. But if you're one of the countless students who only uses a computer to write essays, buy books, chat with friends, check email, etc., then the Chromebook might be a great investment for you. They are very light and have fantastic battery lives (mine lasts for 5 hours on a single charge, and I listen to Pandora a lot). All of your information is automatically stored if you write in Google Docs, so no more lost documents. This also means you can access your essay from anywhere, or share it with multiple people instantly. Updating it is very simple, just restart it. I had a friend over once and we were going to watch something on the Chromebook, but I decided to restart it first. It took about 30 seconds to turn off, update, and turn back on again. In his words: "That was it?"

I really cannot say enough good things about the Chromebook. I will admit that it is frustrating to not have Microsoft Word or Excel on it, and I can't play DVDs or CDs, but it can literally do almost anything else that I have needed it to do. Have I mentioned it's great for someone on a budget?

So before you look down on the Chromebook thin client laptop, remember that it too is surviving a Hopkins education. And it's going to graduate with honors.