Archive for school

Exam 3: Internetworks

// January 21st, 2010 // No Comments » // school

A little over due since my last exam was almost a week ago, but still, here’s how it went.

The course covered a very wide range of subjects and was a ton to study.
Amongst others:
Dynamic IP routing: RIP, OSPF, BGP
IPSec
IPv6
Security basics (encryption, certificates, public key encryption)
…..

The exam itself went fairly well, and with the points of the practical exercise and another test, I think I should get enough points to pass.

Exam 2: Mobile Networking

// January 7th, 2010 // 2 Comments » // school

Today started quite bad and abruptly. I had set my alarm for 7 am (early bird and stuff)….but it didn’t go off because my phone’s battery died overnight.
So when i opened my eyes, it was 10h30! Holly Moses, I was running late!

So I got my stuff together and went straight to school. The exam wasn’t for long (18h) but I knew I wouldn’t get much work done sitting here.

The subject?
Modulation techniques used in wireless networking:
- FM
- PSK
- DSSS
….

9 hours later, exam nr. 2 was done. Not bad, not great, enough to pass.

One more to go, next friday. And that’s the hardest one…

Exam 1: Network Operating Systems

// January 6th, 2010 // No Comments » // Geek-Stuff, school

So, I had my first exam today.
The course in question: Network Operating Systems 1 – Windows Server 2008

- Warning –
This post may contain higher levels of geeky-ness than normal.

During the semester, my lab-partner and me set up 2 servers, running Windows Server 2008.
(we were running these as a virtual machine, using VMware).
The 2 servers were in seperated subnets, both running a number of services.

The exam consisted of getting everything up and running and showing the teacher everything worked.

Step 1: DHCP
Boot a client-pc, see which DHCP-server he’s getting an IP from. Then disable the DHCP server on that specific server and renew the clients IP-adres. If all goes well, the client should get an IP-adres from the server in the other subnet (only because the ‘iphelper’ command was entered on the router between the subnets).
Check

Step 2: DNS
Add a Pointer-record on one server and make it replicate to the other server.
Check

Step 3: Active Directory
Log on with a normal AD-user. Use the ’set logonserver’ to check with of the 2 servers is being used as logonserver. Then do ’set logonserver=\\%theotherserver%’, log off, then disable the networkcard on the current logon-server (to simulate it being down). Log on again and if everything is good, the client should use the other server as logonserver. (thus making logon possible if the server in the client’s subnet is down)
Check


And this is where it get’s interesting. The client was on my subnet, so he was using my server as logonserver. So I disabled the network-interface to do the previous step.
In the next step, I needed my server again so I enabled the network-interface again.
And that’s when it happened. The icon stayed grayed-out for longer then expected. And *bamm*. BSOD.
I almost fell out of me chair, holly fuck…
I let it do it’s physical memory dump, it rebooted and worked all normal again. But holy fuck.
Thank god the teacher was standing right behind me when it happened and most the exam was already over.

Step 4: VPN
We used a predefined VPN-interface on the client (which was pointing to my server, which was why I needed my server online)
Check

Step 5: Group Policy
Create a number of policies, limiting options for specific users. Logon with a number of users to check if the different policies were being applied.

Step 6: VPN+GPO
Log on with a user over VPN and see if the policy is being applied (the policy here being ‘the user can only start notepad and calculator, nothing else).
Check

Check and check. The teacher congratulated us on a good exercise and excellent know-how.
Hell yeah :D
Up the next one! (tomorrow that is…)

Back to school

// August 27th, 2008 // 2 Comments » // school

I’m going back to school. Yes, that’s right, me going to school voluntarily :-) . To my colleagues, not to worry, I’m not leaving you all just yet. It’s an evening class. Well, class might be a bit of an understatement. It’s a 3-year program that results in a graduate-degree. Where am I doing this? At Groep-T, right here in Leuven, couldn’t be beter. When? In the first year, classes are on Thursday-evening (18h-21h40) and on Saturday-morning (8h10-12h40). That’s right again, every Saturday morning, so that means no more badminton-tournaments. This is one of the reasons why I wasn’t sure if I really wanted to do it. I used to play 2 tournaments a month and those usually last the whole weekend. But now that I’ll be having class every Saturday morning, what will be history for at least a year. But I’ve made peace with that now :-)
Now for the biggest question: what? Data- and Telecommunication-technics (clicky to read more). Why this? At first I thought about going for ‘Informatica’ but when I looked at the program I say that it was all just about programming. A, I don’t find that very interesting. B, I’m not good at it (due to A), C, I don’t see myself doing that for 3 years. Then this came on the table, I had a look at the program and I was sold right away, a ton of great (useful) things to learn, and a great boost for a potential new career.

I had expected classes to start together with the normal academic year (3rd week of September), but no, they start September 1st. But that’s kind of a problem, since I’m not home that week, so I won’t a able to go. I wasn’t feeling to good about missing the first class but they told me that it’s mostly admin-stuff anyway, nothing to worry about. All that’s left to do now is go down there to finish the paperwork and buy my books.

It’s going to be quite a challenge, but I’m totally motivated to do this!