Internet for the dorms!

K-Net is a nonprofit organization offering internet access to the dormitories on the DTU campus and in the Kgs. Lyngby area.

Learn more about K-Net

How do I get online?

Different dormitories have different requirements and procedures to be followed in order for you to access the internet. Therefore, you must contact the network group at your dormitory.

Get involved!

Would you like to be part of improving our exciting setup? Read more about volunteering.

Announcements

8 May 2013 21:10

Our connection to the internet has now been upgraded to 10Gbps. There were stability issues during the afternoon and evening related to the upgrade, but these are solved now.

The speed limits that were enabled on 29 April have been disabled again, since there is now enough bandwidth.

Allan Boll

8 May 2013 15:28

Our internet provider will try to upgrade our internet link today, this means that the connection may disappear for a few minutes.

Lasse Poulsen

29 April 2013 10:44

Fair usage speed limiting has been reenabled in order to try to fix the bandwidth problems in the evenings, until we get the 10Gbps connection. You can read the limits and speeds that you will be reduced to if you reach the limit on this page.

Allan Boll

28 April 2013 21:10

Lately a lot of people have been complaining about low bandwidth, this is due to the face that we currently only have a 1Gbps uplink to the internet. We have already ordered a 10Gbps link, and this should be in place within the next 14 days - the exact timeframe is still a bit fuzzy, but we will write an update here as soon as we have any more information.

Lasse Poulsen

25 April 2013 09:54

Trørød is without internet connection. The fiber is broken by a contractor at the motorway, and the break has been reported. The connection should be fixed during the day.

Mads Pedersen

21 April 2013 11:46

Due to router maintenance, a very short outtake of the internet will happen 22. april 2013 at 23.59. Hopefully the outtake only takes a minute at two, but be prepared for up to an hour. We apologize for the inconvenience.

Mads Pedersen

19 April 2013 11:24

Due to the restart at midnight, some internal routing errors where caused, this affected internet access from Trørød and made old K-Net systems and DTU systems unavailable. We apologize for the inconvenience.

Mads Pedersen

19 April 2013 02:01

An unscheuled restart of our core router happed around midnight, making the internet unavailable for half an hour. We apologize for the inconvenience.

Mads Pedersen

13 March 2013 14:04

Trørød dorm is now online again! Thanks for the patience at the dorm and thanks to Jesper for his hard work on getting Rudersdal to fix the problem.

Lasse Poulsen

12 March 2013 13:34

Rudersdal municipality (Eltel) seems to have located the problem and the person(s) responsible for breaking the Trørød fiber. They have to put in a new fiber along the highway, and may be done as soon as this afternoon. But it looks like work won't be done before tomorrow

Lasse Poulsen

11 March 2013 17:11

There have been located multiple breaks on mutiple cables a few kilometers from the dormitori, the breakage needs to be further inspected before repair work can be started. Current status is the repair of the fibercables will start tomorrow.

Lasse Poulsen

8 March 2013 23:28

There is still no connection to Trørød, it seems this problem might be unreleated to Global Connect's fiber at the highway, more infomation will come as soon as we know anything.

Lasse Poulsen

8 March 2013 21:26

Total network outage at Trørød Kollegiet, this is due to a broken fiber-optics cable near the E55/E47/19 highway. Global Connect are working on fixing the problem, and are expecting to finish by 22:45.

Lasse Poulsen

2 March 2013 01:35

Two days ago K-net recived an AccessPoint controller, a device that can control multiple AccessPoints. The purpose of this aquirement is to supply the dorms with Wireless access.

Today we deployed the controller and adopted the new setup on one dormitory (WDK), and we will probaply soon be ready to roll out on even more locations. Some locations may needs to update their existing infrastructure before wireless is a posibility.

Lasse Poulsen

23 February 2013 23:00

Due to a minor routing issue when moving an IP range from the old system to the new system, some users may have experienced problems with access to the K-net DNS servers. The problem has now been resolved. We apologize for the inconvenience.

Lasse Dalegaard

11 January 2013 22:12

Minor outage in the internet connection due to a full disk, the problem is now fixed and the internet should work as usual.

Lasse Poulsen

21 November 2012 22:51

Access to the user management panel should now be restored.

Lasse Dalegaard

20 November 2012 03:11

Due to an issue with the K-net firewall, the user management panel at https://k-net.dk/user/ is currently not working. We are working on a solution.

Lasse Dalegaard

15 November 2012 23:15

A bug causing some users to be disconnected every 10 minutes during the day has been resolved.

Allan Boll

15 November 2012 14:42

An error in a configuration update made the server misbehave after a reload of the configuration, we are currently searching for a solution.

Lasse Poulsen

1 November 2012 14:11

Due to an error in our core-router the all network connections have been disconnected, for now the router have been restarted and we are working hard to resolve this issue.

Lasse Poulsen

17 October 2012 14:48

Due to an unschedueld maintenance restart of our core router, and a little problem with BGP users may have experienced losing their connection shortly.

Lasse Poulsen

14 May 2012 16:34

It is now possible for users to control their individual firewall configurations on the new transparent firewall. To use this feature, select the "Open ports" tab on your user control panel.

Lasse Dalegaard

11 April 2012 01:52

Due to a software upgrade, the new K-net firewall was offline for a few minutes. We apologize for the inconvinience.

Lasse Dalegaard

9 April 2012 22:41

Due to the increased number of users on the new system, there have been some problems aquiring a dhcp lease today.

The problem have now been solved and we welcome Kampsax to the new login-less system.

For techies: The problem is that the combination of the ISC-DHCPd and our management scripts wasn't fast enough to handle all the requests suddenly coming in. This resulting in a snowball effect so that the server seemed to experince a DDOS attack.

Lasse Poulsen

4 April 2012 22:56

Interruptions on the old systems ("fw2" and "K-Net Utility") yesterday. A big sorry to the ~500 users logged in.

For techies: We have been experincing problems with a bad link between fw2 and our storage, which means we had to restart fw2 twice yesterday.

Firstly to try and replace the cable between them, and secondly to switch to using TCP for the NFS share instead. The setup is now working and there should be no more interference on the link, which in turn means a bit more stability on the link.

Lasse Poulsen

15 March 2012 09:56

The old systems ("fw2" and "K-Net Utility") are now back to normal.

For those with a tech interest: There was a problem with copying log files via NFS, causing all attempts to freeze the process trying. Unmounting or remounting the NFS export also caused the process to freeze. Finally max number of processes was reached, and no further logins were possible. When I got access to the basement this morning and rebooted the machine, no logins were possible because the password DB was corrupt. It was rebuilt, and now things should be back to normal. Lesson learned: we are glad we avoided NFS on the new systems.

Allan Boll

15 March 2012 00:35

The old systems ("fw2" and "K-Net Utility") are down, unless you already have an open connection. We are unable to get access to the physical location at this time. We will be there at 8:00 tomorrow and try to convince DTU Campus Service to let us in to the basement, so we can restart the systems.

Allan Boll

12 March 2012 00:50

We have just rebooted the old systems as they were having issues. Everything should be back to normal again now.

Allan Boll

09 March 2012 13:22

The issue is now resolved. There was a routing issue with our IP range at Forskningsnettet.

Allan Boll

09 March 2012 12:51

There currently seems to be an issue with connecting to Danish hosts. We are investigating and have contacted Forskningsnettet about the issue.

Allan Boll

08 March 2012 19:07

The new system is now routed around the old firewall, reducing load and improving performance for the users and dorms still connected to this firewall. We expect to be able to utilize the new system fully tomorrow, when BGP is connected for K-net.

Lasse Dalegaard

08 March 2012 14:36

On 2012-03-09, around noon, Forskningsnettet will be moving the K-net uplink connection to another router. During this time, there will be no connection to the internet. The alternative connections will continue normal operation, as will the link to DTU. We expect the downtime to last a few minutes.

Lasse Dalegaard

05 March 2012 23:56

There will be a small interruption on the internet connection Tuesday 06 March 2012 of around 15 minutes. We expect it to be between 10 and 12 AM. We will be inserting an extra router between Forskningsnettet and our systems. This is to be able to take load off the old system, for traffic flowing to users on the new system.

Allan Boll

05 March 2012 23:10

Since last summer we have in the operations group spent many hundreds of hours on a new firewall setup, which will replace the old "K-Net Utility" firewall. The new system does not require any login system like the old K-Net Utility, and does not block internet access when the usage limit has been reached, but instead just lowers the speed.

We are getting very close to be able to launch fully. There are currently around 250 users on the transparent firewall setup from several dorms, as a systems test. The dorm network groups have been given access to test the new system, and have begun integrating.

Before we can fully launch, we are waiting for Forskningsnettet to make a small change on their equipment. This change will enable traffic for users on the new system to flow directly to the new system, rather than partially through the old, as it is currently the case.

We are also waiting for the DTU administration departments IT department to give us access to Polyteknisk KollegieSelskabs data on move-out dates, so we can close internet acces when people move out, thereby ensure that people who move in have signed the internet usage contract (in the old system, this issue was solved by people having to obtain their K-Net Utility passwords).

On this new site we have added some information for those technically interested in the new setup that is coming up. You can read about these under Technical Setup.

We hope you enjoy our new website!

Allan Boll

22 September 2011 12:05

Problemer hos K-net, og godt nyt i vente. K-net har i længere tid haft problemer i aftentimerne, hvor det kan være svært at forbinde til Firewall 2. Lige før sommerferien prøvede K-net drift at få en midlertidig Firewall 1 op og køre, men dette lykkedes desværre ikke.

Der er dog gode nyheder i udsigt. K-net drift har pga. problemerne kigget på mulige løsninger, og har en ny løsning på trapperne. Der er kørt indledende tests, og der mangler ikke så meget. Vi vil forhåbentlig se det første kollegie teste den nye løsning omkring efterårsferien.

Der vil komme flere informationer, så snart alt er ved at være på plads, og den nye løsning implementeres. Der vil være en glidende overgang, så kollegierne flyttes et af gangen, så vi er sikre på ikke at opleve problemer igen. Der vil desuden blive sørget for at flytningerne sker så de genere mindst muligt.

Mads Pedersen

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