K-Net is a non profit organization offering internet access to the dormitories on the DTU campus and in the Kgs. Lyngby area.
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.
Would you like to be part of improving our exciting setup? Read more about volunteering.
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
Due to a software upgrade, the new K-net firewall was offline for a few minutes. We apologize for the inconvinience.
Lasse Dalegaard
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
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
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
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
We have just rebooted the old systems as they were having issues. Everything should be back to normal again now.
Allan Boll
The issue is now resolved. There was a routing issue with our IP range at Forskningsnettet.
Allan Boll
There currently seems to be an issue with connecting to Danish hosts. We are investigating and have contacted Forskningsnettet about the issue.
Allan Boll
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
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
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
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
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
OK K-Net new core systems
OK K-Net old core systems ("K-Net Utility")
OK Link to Forskningsnettet
OK Link to Andelskoll. Kollegiebakken
OK Link to Andelskoll. ved DTU
OK Link to Kampsax
OK Link to Nybrogaard
OK Link to Paul Bergsøe
OK Link to P. O. Pedersen
OK Link to Professor Ostenfeld
OK Link to Trørød
OK Link to Viggo Jarls
OK Link to Villum Kann Rasmussen
OK Link to William Demant