News
2011-06-21: Traffic limit increase
From now on you will be credited with 150 instead of 50 points per hour. The maximum number of points is now 150,000 instead of 50,000 points, 1 point equals 1 MB traffic. Traffic to Selfnet, the University of Stuttgart, the Stuttgart Media University (HdM) and the Baden-Wuerttemberg Cooperative State University (DHBW) is not accounted
2011-06-21: New support hours
As of July, our support hours change:
- Vaihingen (Allmandring 8A U8): Monday and Thursday, 6-7 PM
- Moehringen (Filderbahnplatz 35 Basement): Wednesday, 8-9 PM
2010-10-07: Modification WHFunk-WLAN
In the next 24 hours the WHFunk-Network will be changed:
- Using the OpenVPN service of the computer center of the Univerity of Stuttgart is also now possible.
- The SSIDs of all AccessPoints get individualised: Instead of 'whfunk' they will be named 'whfunk-xxx', f.e. 'whfunk-127'.
2010-06-28: Computernetwork outage today
Some dormitories couldn't access the network for a few minutes due to a malfunction during our switch update.
Therefore we apologize.
2010-01-20: No Internet connection at Studetenhotel on saturday
Due to a power turn off in one of our allocation station some time on saturday there is no Internet connection at Studentenhotel.
2009-12-21: Support during the holidays
Many of us will travel home during the holidays so there won't be anyone available during the opening hours. That means: From 23th december 2009 till 10th of january 2010 we will close our doors.
When you have urgent problems you can still send us an email and we will try to answer as quickly as we can.
2009-10-15: Web forum now online again
Some time ago we had to shut down our web forum due to technical problems. Now we have the forum back online again. Watch out the location www.wh-netz.de/community/forum to see the newest stuff. If you want to write an entry you have to register and then get an activation email sent.
2009-09-06: Switch replacement in dormitory Straußi 2
We replaced all networking-switches in Straußäcker 2 today from 10 am until 6 pm. Because of this all the inhabitants in this dormitory lost their networking connection for some time.
2009-05-25: No support in the whitsun week
From 2009-06-01 until 2009-06-05 there will be no support at WH-Netz.
2009-04-22: Network outage on Thursday, 16.04.2009
A leakage in a water pipe in Allmandring 8 flooded our fuse box and caused a power outage in our server room as well as a downtime of the whole network. Thanks to tutors the problem could be resolved within hours and the network is up and running again.
2009-02-26: Forum temporarly closed!
Due to a technical Problem our Forum has to be closed for some time. But we are currently working on the Problem.
2009-02-09: Opening Hours in Heilmannstraße now starting at 20:00 o'clock
From January 2009 on the Opening Hours from Selfnet and WH-Netz in the Dormitory Heilmannstraße (CityNOC) is on monday from 20 to 21 o'clock.
2009-01-13: Opening hours on Wednesday
On Monday we had several technical problems on one of our server which is responsible for user management. Due to this we had to disconnect the server from the intranet and could not offer our Support on Monday.
From now on works everything fine again and we can provide our opening hours on Wednesday as usual.
2008-12-18: Open Hours 'between the years'
At Christmas time our Support runs only reduced because many of us travel home over Christmas.
That means in detail:
NOC at Vaihingen and CityNOC at Heilmannstrasse are closed from December 24th to January 6th and reopen both at January 7th.
In 'In der Au' there is from December 22nd to January 8th no support.
We wish to everybody happy Christmas, lots of gifts and a happy new year!
WH-Netz Team
2008-12-18: Support 'In der Au'
Due to the fact, that our dormitory tutor Bernhard in January 2009 will have his studium completed, there will be no more Support in 'In der Au'. Please go to the opening hours in Vaihingen and in the CityNOC.
2008-08-15: Different Opening Hours in the City
The support opening hours in the city (Heilmannstraße CityNOC) will take place on the 18. August from 20:00 to 21:00.
2008-07-13: Opening Hours In the City
The support opening hours in the city (Heilmannstraße CityNOC) will take place on the 14. July at the following times: 15:00 to 16:30 and 20:00 to 21:00.
On the 21. July only limited opening hours take place. Expect longer queues and waiting times.
2008-03-13: Network outage on Sunday, 16.3.2008
Due to maintenance work on the power supply at the university the internet uplink for all dormitories will be down on Sunday, 16.3.2008 from 9am to 6pm.
2008-02-17: VPN-Service relaunched
Starting today an updated VPN-service is available to all WH-Netz users. For VPN-connections form outside WH-Netz or through the whfunk wireless network are now authenticated with a username and password.
This new configuration requires an updated client-side configuration which can be downloaded from our dbSelfService ('Support' in the menu to the left).
To (re-)activate your VPN access, you have to change your password in dbSelfService once. For new users that do not yet have access to the dbSelfService, VPN access will be activated as soon as dbSelfAccess is available. The username for VPN is your E-Mail-Address, just like your login to dbSelfService.
2008-02-05: DNS / eMail-Support - Maintenance
Due to maintenance tasks there may be outages of our nameserver, starting Sunday, February 10th, 12am. Also sending mails to our support system will not be possible from this date on.
We'll try to complete our changes as soon as possible.
Your WH-Netz Team.
2007-12-19: Open Hours 'between the years'
At Christmas time our Support runs only reduced because many of us travel home over Christmas.
That means in detail:
NOC at Vaihingen and CityNOC at Heilmannstrasse are closed from December 24th to January 6th and reopen both at January 7th.
We wish to everybody happy Christmas, lots of gifts and a happy new year!
WH-Netz Team
2007-11-07: Port listing Möhringen arrived
The port listing for the new building in Möhringen has arrived. Contracts for internet access can be signed starting now.
2007-11-05: No Service at Filderbahnplatz 35
Until now there is no chance for us to activate any internet-access at Filderbahnplatz 35, because we have no port list. Therefore it is useless to go to WH-Netz, if you are located at Filderbahnplatz 35. As we get the needed data, we will inform you at this place.
2007-10-23: Uplink
In the evening hours our uplink is used up to 100% (you may also check this on that graph) since some weeks.
Until now, we cannot tell you when we get a bigger uplink (GBit?).
2007-10-23: Networkoutage in downtown Stuttgart
Shortly before 3pm, the network went out in all dormitories in downtown Stuttgart. This was caused by a digger that severed the cable connecting the downtown dormitories to Campus Vaihingen.
We do not know when the cable will be repaired.
2007-10-17: Network outage in dormitory Gleisdreieck
Due to maintenance on the fibre connection from EnBW between the dormitory in Möhringen and our network, the network in Möhringen will be down starting 25.10.2007 up until 26.10.2007. The exact timeframe EnBW requests is from 3am to 6am.
Update: EnBW moved the downtime to November, 9th at the same time.
2007-10-01: New terms of use
While bringing the two associations, WH-Netz and Selfnet e.V., closer together, new terms of use become effective, beginning with the 1st of October 2007.
All users will be informed via E-Mail and letter drop as well.
For those, who have already signed the current one, the new terms of use will become effective in four weeks, starting on Monday, 29th October 2007, unless you disagree to one or more of the changes made.
The changes on the terms of use make it possible to use the same terms for those, who are administrated by WH-Netz and for the members of Selfnet e.V.. Furthermore, a few minor changes have been applied, e.g. cable modems are not taken into consideration any more. Despite the changes, the key ideas of the terms of use stayed unchanged.
2007-09-26: Internet connection in Möhringen
After quite some difficulties the internet connection for the new dormitoriy Gleisdreieck in Möhringen is up and running. Thus new users can fill out the pre-registration and come to our consultation hours to have their contracts activated.
2007-09-26: Preregistration
For several weeks now WH-Netz offers a pre-registration for new contracts. New tenants simply have to connect to the network and try to surf anywhere. They will be redirected to our pre-registration page where they can enter their contract data.
As the preregistration saves us a lot of time, we decided to give everyone some more motivation: Everyone who filled out a pre-registration will be preferred in the queue in Vaihingen!
2007-09-18: A few hours without the net, starting friday, 11am.
Next friday we will install a new nat-router and upgrade our border router to support gigabit-ethernet. Depending on how things go we will also start with restructurng the dormitory network.
Thus, there will be no internet connection for at least two hours.
2007-06-09: Neue Funkbrücke zur Birkenwaldstrasse
Zwischen dem Stundentenhotel und der Birkenwaldstrasse ist seit Anfang dieser Woche eine neue 36MBit-Funkbrücke in Betrieb genommen worden. Durch störende Gebäude wird die maximale Geschwindigkeit aber vermutlich nicht erreicht werden können.
Wir bitten die Ausfälle durch den Umbau von der 2MBit-Standleitung auf die Brücke zu entschuldigen.
2007-05-24: No consulting hours on 05/28/2007
There will be no consulting hours on Monday, May 28th, because of the public holiday. Our next consulting hours will be on Wednesday, May 30th.
2007-05-09: Anmeldung von zu Hause
Ihr könnt euch ab sofort aus eurem Zimmer aus anmelden. Dazu müsst ihr einfach euren Computer an eine Netzwerkdose anschließen und auf irgendeine Webseite gehen (z.b. www.wh-netz.de). Ihr werdet automatisch auf eine Voranmeldeseite weitergeleitet. Dort folgt ihr dann den Anweisungen des Anmeldeformulars. Danach braucht ihr nur noch mit eurem Personalausweis oder Reisepass in unserer Sprechstunde vorbeizukommen und die Formulare unterschreiben und wir euch dann freischalten.
2007-04-25: Get to know WH-Netz! Come to the NetHackchen.
On Saturday, April 28th, at 3:30 o'clock PM we will be presenting you the work we are doing at the WH-Netz. Right after this, there will be some talks about various topic to give you an idea about the diversity of topics we are working on and interested in. These talks will be held by WH-Netz people as well as Selfnet tutors.
The event will take place at the 'Ökumenischen Zentrum' in Vaihingen. Additional information as well as a brief schedule is available at
https://nethack.dev.wh-stuttgart.net/
We're really looking forward to meet you!
2007-03-21: Network outage in downtown Stuttgart
Tomorrow, Wednesday, March 22 2007 between 4pm and (probably) 6pm internet connection will be out for all dormitories in downtown Stuttgart due to maintenance work at RUS - the new connection from Vaihingen to downtown Stuttgart will be installed.
2007-03-20: New downtown consultation hours
After many preparations we now opened a new office in downtown Stuttgart. Starting immediately, all users from city-dormitories can come to our new consultation hours in the former AXA-Building at Heilmannstrasse 4 (AKA 'Red Bunker'). Every monday from 6pm to 7pm people from Selfnet as well as WH-Netz are around to help you with your registration or any problems you might encounter with our network.
To get to the new office you have to use the right entrance 4B (NOT the main entrance 4A). Our office is behind the first door to the right, labelled 'Büro Selfnet'.
2007-03-20: Possible Outage of Internet Connection
Because of hardware maintenance at BelWue, there might be outages of the internet connection starting from 7 o'clock pm, today, march 20th. The maintenance is due to be completed at 8:30 pm.
2007-02-08: Inner-City network outage
Due to maintenance at K1, Uni Stuttgart, City-Campus the network connection for the following dormitories might be disrupted from 7:45am until 8:45am: MAx-Kade-Dormitory, Theodor-Heuss-Strasse, Wiederholdstrasse, Brückenstrasse, Alexanderstrasse, Studentenhotel at Neckarstrasse.
We would like to use this downtime to do some maintenance on our own routers for city-dormitories, thus the internet connection for all inner-city-dormitories might be disrupted until noon.
2006-12-20: Merry Christmas and a Happy New Year
The WH-Netz crew would like to wish you Merry Christmas and a Happ New Year.
Since we're going to spend the holidays with our familiees too, and since the time between Christmas and New Year is perfect for taking a few well-deserved days off, our next support session will be next year on the third of January.
Additionally the holidays will be used for conducting several tests, which is why there may be outages of the following systems on December 12th:
- WH-Netz Webserver
- SMTP-Proxy (disturbance of email-sending)
2006-11-24: Network failure Thuesday, 28.11.2006
Next Thuesday (28.11.2006) we expect a power cutoff in Allmandring 8a. The reason is the laying of new power lines. Unfortunately we didn't get a clear word about the concrete power loss period. We were told the worst case is from 8:00 am to 5 pm and if it goes really bad even once again on Wednesday. However it is also possible, that nothing happens at all because there seem to be variances with the electrician which might lead to engaging an different company.
2006-11-02: Replacement Kade-Router
Today, our Router at Max-Kade dormitory crashed for the second time in two weeks. We bought some new hardware in order to replace the older components. When we changed the mainboard, we discovered some damaged capacitors on it.
This Router is responsible for Alexanderstr., Johannesstr. and Wiederholdstr. .
We hope the new Computer will do its job for some years without crashes now ;-)
2006-10-06: Wanted: Dormitory Tutors!
Would you like to look after the concerns of your international flatmates in your dormitory? Give new international students practical tips to help them to settle down? Organize at least one event per semester in your dormitory that improves integration?
The Office of International Affairs at the Universitaet Stuttgart together with the Studentenwerk Stuttgart looks for Dormitory Tutors for nearly every dormitory of the SWS! The task involves approx. 2 - 5 hours of work per week.
As a 'Thank You' we can offer:
1-semester-extension of your rental contract with the Studentwerk Stuttgart
Intercultural training for new Dormitory Tutors
If you are interested please get in touch with:
Raphaela Diel
Office of International Affairs
Internationales Zentrum (IZ)
Pfaffenwaldring 60
70569 Stuttgart
Tel. 0711/685-68545
E-mail: diel@ia.uni-stuttgart.de
More Information about this program please find at:
http://www.uni-stuttgart.de/ia/internat/services/wohnheimtutoren_prog2.html
2006-09-23: Uplink died
... and it is Saturday and we haven't got a mobile number from the RUS people. :-(
We hope they will answer our email.
Update: The router responsible for us is defect and could not be repared during the weekend. The RUS-People are working on it right now.
Update2: Jippie! It's working again.
2006-08-18: CAcert Assurance at WH-Netz
We newly have got enough people that can issue CAcert points.
If you are interested have a look here:
http://www.wh-netz.de/knowledgebase/CAcertAssurance
2006-08-10: No network on 02.09.2006
Due to maintenance work in the transformer station in Allmandring 8e on Saturday, 02.09.2006 there will be no power in our server room for the whole day. This means there will be no network connection in any dormitory.
Sorry, for the inconvenience.
Your Wh-Netz Team
2006-07-22: Power failure Allmandring 26D
An unknown event caused a power failure in Allmandring 26D. There wont be any Internet connection in this building until this is fixed.
2006-07-10: WIFI access WHFunk back again
Our redesigned wireless access WHFunk is now available. A connection is easily established by using the existing openvpn-access. special accesspoints can be borrowed for a deposit.
More Information: http://www.wh-netz.de/knowledgebase/WHFunkKonfiguration
2006-06-27: Network outages
Due to mainenance and work on the new DMZ with Selfnet, there might be some sporadic disturbances of the network. These may occur from today 06/27/2006 until friday 06/30/2006, mainly in the evening hours.
2006-06-22: Power breakdown, Friday 23.06.2006 8:00 a.m. - 12:00 a.m.
due to maintenance work on
Friday, 23.06.2006 from 8 a.m. to ca. 12 p.m.
the power will be shut down on the part of the 'Studentenwerk' in
several dormitories in Vaihingen which will also affect our server room.
During this period the whole network in Vaihingen will not be
functioning. The internet connection of the dormitories in the city will
be off, too.
We appreciate your understanding.
Your Wh-Netz Team
2006-06-20: City network breakdown yesterday evening
Due to still unresolved problems with our Xen, runing on Avalon, our city- and Selfnet-Router, the internet connection for the city-dormitories was down for a few hours.
2006-06-12: Maintenance work - outage city dormitories / connection to selfnet
Due to maintanance work. the city dormitories are offline between 7 and 12 p.m. this evening. The connection to selfnet is affected, too.
2006-06-12: Selfnet LAN-Party
On June, 23th to 25th, there is a LAN party arranged by Selfnet e.V. We start at 5 p.m. on Friday and end on Sunday in the morning. Venue is the exercise room in V47 (Campus Vaihingen). Of course participance is for free.
For more information concerning the LAN party, what is offered by Selfnet e.V. and what you have to bring with you, the registration form, ... please visit:
http://www.selfnet.de/lan-party
2006-05-21: Network breakdown city-dormitories
Today until 6 p.m., the dormitories Nordbahnhofstr., Birkenwaldstr., Kernerstr., Landhausstr. and Neckarstr. were offline. The reason was a amok running router in the dormitory Nordbahnhof.
2006-05-20: WH-Netz is looking for new members
Is your study boring and full of theory? Do you want some practical experience that shows you what this theory can be good for? In our club you can achieve valuable experience in areas like
Databaseadminstration, Computer Networks, Linux Administration, Webdesign, Customer Support, Data Security, Softwaredesign, Accountancy, foreign Languages, Teamwork ...
With more than 1000 Internet connections, more than 30 members and after more than 10 years, our club has become an organization that operates very professional in many ways. In some areas (e.g. network security) we established standards where comparable companies would get jealous of.
All this is done by a group of nonsalaried working students, working just for the fun of it.
Besides the job-related qualification that arises from this action, members get
- pizza after our opening hour
- extension of habitation time in the dormitory
- a nice t-shirt
- free Internet access in the dormitory
- periodical presentations relating to computer and network themes
If you're interested in helping us, you are cordially invited in visiting us after our opening hour!
2006-05-17: Power breakdown Vaihingen
Due to a power breakdown yesterday evening our network was offline until this morning.
2006-05-02: Hardware exchange in main router
The keyboard controller in our main router went west. Thus we bought a new main board which we want to install today evening. Durig the exchance the internet will be unreachable. The same applies to our www- and ftp-Server. Due to the high number of network interfaces in the router the modification may take a while.
We start about 8 o' clock.
Update: Unfortunately it took more time than we expected. The broken mainboard was so old that it didn't have a standard cpu cooler. Thus we had to move the cooler socket, too.
However, there is also good news: We used the opportunity to upgrade the three most important network interfaces - DMZ, webserver and NAT gateway - to gigabit. That includes amongst others the web proxy and our Linux mirrors http://ftp.server.whnetz/
2006-04-11: DNS breakdown
Since yesterday evening (Mo. 10.04.) our DNS had some failures. Due to that, domainnames couldnt be resolved into IPs.
2006-04-04: Reboot Main-Router
We found the cause of the slow Internet connection during the last few days. In order to solve the Problem we have to reboot one of our main routers. We hope that the connection will be cut off only for a short time. If futher problems occur, the breakdown would be for a longer time.
2006-02-19: Service: OpenVPN
Our OpenVPN-service, which allows every user to access stuff in the WH-Netz from anywhere was now changed from TCP to UDP to reduce latency.
Therefore you need to re-download all certificates & configuration files from our dbselfservice, if you have used this service before.
More information is available here:
Knowledgebase
2006-01-28: Public IPs
From this week on the BelWue has given us enough public IPs that everybody can have his own.
How the new system will be configured is mostly in our hands.
Due to many technical, political and sozial considerations we collected our thoughts in our Wiki.
Here you can see the most recent state (german only):
https://www.wh-netz.de/knowledgebase/ExterneIPs
If you have an opinion or a question about it, don't hesitate to post it in our Forum:
https://www.wh-netz.de/community/forum/list?1
We are looking forward to see your contributions.
2006-01-19: Port-Scans
We are currently working on a new system which port-scans all pcs and checks them for security holes.
All information about the scans will be available in our dbselfservice.
2005-12-21: No consulting hour at 26th and 28th
Unfortunately none of us can be here for a consulting hour on the above mentioned days.
We wish you all happy holidays.
2005-11-29: Network uplink problems
We had and have problems concerning our network uplink theese days.
After several tests with different fiber to copper converters, different fibers and changes on the routers at bouth ends, we have a pretty well throughput again.
Soon the RUS will measure the actual quality of the optical fibers. In the medium term a new fiber is planned.
Thanks very much for the friendly help of the colleagues of RUS and BelWue!
2005-11-27: Maintenance work on proxy.wh-netz.de at 27.11.2005 18:45-19:45
Our HTTP-proxy gets more RAM and additional harddisks to compensate for the increased load.
2005-11-21: Nachruf
Am vergangen Samstag, den 19.11.05, verstarb unser Freund und langjähriges Vereinsmitglied Hubert Kaißer völlig unerwartet im Alter von 33 Jahren.
Mit seiner stoischen Ruhe und Zuverlässigkeit war Hubert immer eine große Stütze für uns und unseren Verein.
Sein früher Tod erinnert uns daran, jeden Augenblick mit anderen Menschen als nicht selbstverständlich anzusehen und hält uns unsere eigene Zerbrechlichkeit vor Augen.
Entsprechend seiner Art, sich, oder im richtigen Moment auch andere, nicht allzu ernst zu nehmen, werden wir ihn als den fröhlichen Menschen in Erinnerung behalten, der er war.
Weitere Informationen hierzu: http://www.szls.org/news.html
Es trauern
die Mitglieder des WH-Netz e.V.
2005-11-14: WH-Funk remodelling
Some people may already have noticed that WH-Funk is not availble at the time. We work on it to improve WH-Funk's stability, speed and the distribution of the accesspoints.
2005-09-29: Changes to traffic quota [update]
the traffic accounting has been changed considerably. Before September
2005, we had a fixed quota of 8GB for downloads and 2GB for uploads
per user per month, ignoring the destination of the traffic and the
different cost for different peer connections.
Since September we account for the different cost of each target for
the BelWue and charge the traffic accordingly. The main goal here is
to reduce the costs for BelWue but allow our users more traffic at the
same time.
We categorize traffic into the following classes:
- Internal (within WH-Netz)
- Selfnet (other student dormitories)
- Uni Stuttgart
- BelWue (other Unis in Baden-Wuerttemberg)
- Peers (Organisation that are directly connected to BelWue)
- DFN (other Unis in Germany)
- Uplink (all other targets around the world)
A detailed table with explanations of the categories can be found here:
http://www.wh-netz.de/knowledgebase/TrafficQuota
You can find the traffic class for any target here:
href='http://www.wh-netz.de/support/ipbudget
Our proxy server (proxy.wh-netz.de) reduces outside traffic by caching
frequently used pages. Of course we pass these savings on to you. If
you use the proxy, we charge only 90% of the traffic points. Pages
that were already in the proxy cache cost only 10%.
Every user will get 4 traffic points per hour which can be accumulated
up to 8000 points. This gives almost 3000 traffic points per month, or
between 3GB and 300GB depending on the traffic class. The new system
is still in the beta test, so the weights of the different targets and
the limits will probably still change.
Sorry if the traffic quota display has been incorrect in the last few
days.
2005-09-22: Changes to Traffic Accounting/Quota:
At the moment, wh-netz is working on a new traffic accounting system. The old traffic quota summary is therefore not working right now. The new system is currently in beta status. The current traffic is still accounted. Account locking will just be delayed until the new system is released.
The new accounting system will make it possible to download a larger amount of data and reduce the costs for BelWue. The new system is based on traffic classes (based on the target ip), which have different values.
Further information are available in the knowledgebase. At the moment only in german, but we are working on it.
2005-09-01: Maintenance work Thursday 01.09.2005
Due to maintenance on the main database, network outages are likely.
2005-08-24: Maintenance work on www.wh-netz.de 24.08.2005
Our Websever gets new Hardware during the course of the day, so www.wh-netz.de and ftp.server.whnetz will be offline for approximately one hour.
2005-08-17: Interruption of electricity Friday, 26th Aug 2005 7am-1pm
The Studentenwerk Stuttgart has announced that on Friday, the 26th Aug 2005, the Allmandring I dorm (and other dorms on the Vaihingen Campus) will be without electricity from approx. 7am to 1pm.
As all our routers, servers and backbone-switches are located in Allmandring I, the whole dorm network, including the network in the city dorms, will be down during that time.
2005-08-08: Maintenance work monday 08.08.2005 20:00-22:30
There was some maintenance work on our border router on monday 08.08.2005 between 8:00PM and 10:30PM. During that time internet access was unavailable.
2005-06-27: network failures
Tomorrow, the 28.06.2005 we will work on some routers. Due to that the network will be partly down during the evening. Affected parts are the connection to selfnet and games, the city dormitorys and wh-wireless. We work for a quick accomplishment.
Your WH-Netz Team
2005-06-14: Network down from 11.50 to 12.30
Today we had a total network breakdown between 11.50 and 12.30. But we weren't resposible ;)
Parts of the hardware relatet to the Kablemodems was removed and the uplink with it.
2005-06-10: Gigabit Link
Since last night the link between Selfnet and WH-Netz is Gigabit. This surely will improve performance :)
2005-05-30: Router maintenance on Sunday (2005-05-29) between 17:45 and 19:45
Last Sunday our routing to the Internet was changed and 3 routers were merged into one new machine. That's why the internet connection was down for almost two hours. We'll try to post advance notification about downtime in the future. Here's the updated network diagram.
2005-05-02: WH-Netz is celebrating: Cablemodem network switched off
There is nothing more to say.
2005-03-17: New knowledgebase structure !
A part of our internal knowlegdebase is transfered each night to this website to give you some information about our network, configuration of programs and other linux-related subjects.
Have a look
2004-12-15: Office hours during christmas holidays
During the christmas holidays our office is open during the regular hours, Mon 18-20h, Wed 18-19h. Dates are: 27th and 29th of December.
2004-11-30: Straussaecker 3 - Consequences of the power failure resolved
After the main power failure this morning (at about 9 o'clock), the switches in Straussaecker 3 were disfonctionning. They are again available since about 11 o'clock in the evening. Please tell us if there is still a problem.
2004-10-23: Powerloss on Saturday, 23th October 2004
There is an announcment at the university that this saturay the electrical power will be gone at least in Pfaffenwaldring 47.
Our uplink to the BelWue goes through this block, so it is very likely that the internet will be gone too (same is true for Selfnet).
Also our backbone switch for Vaihingen is likely to become offline. That means that there will be no internal network for all switch users (10.33. ip address). This problem does not apply to selfnet.
2004-10-20: Straußäcker 3 - waiting is over!!!
We still don't have a list that relates rooms to Networkports, but we managed to figure out some Connections. With these we were able to calculate the rest of the Connections.
This means: Every new networkaccount will be ethernet and modemusers can change from modem to ethernet.
Just bring your modem, dormitory lease contract and passport to the consulting hour. Subusers don't need to bring a modem...
2004-10-07: Network failure
If you asked yourself why the network wasn't working: 'James' didn't wanna work anymore. James is the DHCP-Server and DNS-Cache. Thus you couldn't obtain the IP address automatically and couldn't resolve network names anymore.
Now it's working again, but you surely noticed alredy. ;-)
2004-08-09: malfunction of cable modems in Allmandring II / III
The cable modems in Allmandring 24 and 26 don't work anymore since last friday. Affected persons should change their contract to the new twisted-Pair connection.
We hope you understand that we don't repair the modem network because it means too much work for us.
2004-08-01: Modem support ceased
There won't be any further support for modems in the dormitories Straußäcker 1 + 2 and in Allmandring 24 - 26. Anyone appearing with a modem will be changed to LAN.
2004-08-01: Changes in Allmandring 18 - 22
After renovation in the houses Allmandring 18 - 22 the internet will be provided by Selfnet. Nr. 18 + 20 are already done.
2004-08-01: Straußäcker 3 - still waiting
We are still waiting for the list which assigns the switchports to your rooms. Please be patient.
2004-08-01: New dormitories in WH-Netz soon
When the uplinks to the new dormitories (Johannesstraße, Rippoldsauer Straße and Wiederholdstraße) will be available, we'll soon be able to connect them to WH-Netz.
2004-08-01: Become a volunteer. One and only chance!
DHCP, DNS, SIP and NAT. Never heard or your daily tools? Don't care.
This is everday stuff at WH-Netz and if you want to learn about Linux and Networking or improve your knowledge WH-Netz is the right place! You have the opportunity to have a productive network with about 1000 users as your playground. You can discuss, try and implement your own ideas with the current team (nice guys).
To be honest: You won't get a chance like this outside university...
2004-06-29: Solution for the upcoming Mail-Blockade
Hello,
we have good news regarding the upcoming email-blockade by the Belwue:
We have found a possibility, that allows everyone using a mail-provider with support for SMTP-Auth (via port 25 as well as 587) to send mails using a mail-program (like Outlook) as before without restrictions, e.g. Web.de will work.
We are now asking you to reconfigure your mail-programs to use authorization (SMTP-Auth) immediatelly in order to check, if your provider offers port 25 (or 587) for SMTP-Auth! How you can check this is described in our last mail (can be found on www.wh-netz.de) and here:
http://www.wh-netz.de/knowledgebase/howtos/EmailProgramme.de.htm
Please compare your results with the data found on our homepage so that we can find mistakes and missing entries. The right place to talk about your experiences ist still our forum:
http://www.wh-netz.de/community/forum/list.htm?f=1
We strongly suggest that you don't hesitate reconfiguring your mail-program, otherwise occuring problems can only be fathomed by
indepth investigations; problems that might be caused by us, your provider or you.
Time is running out! Because we need at least one day for testing until the final block is actived by the Belwue, our firewall will block unauthorized mails from tomorrow night on!
For those with an technically interest in the matter, here is a brief explanation about what will happen with your mails in the future:
Connections to port 587 won't be mangled, because 587 will remain open. Connections to port 25 are 'caught' on our main-router and are sent to a special server (our SMTP-proxy) which won't be blocked by the BelWue. This server simulates your (provider's) real mail-server to you. The server takes your authentication-data and authenticates the connection to your real mail-server. When the connection is approved positiv, your complete mail will be sent out.
Regards,
your WH-Netz-Team
2004-06-17: WH-Funk WLAN network goes online
Our WLAN network is now online.
Every user staying near one of our network Access-Points (AP) can use it for free!
For those, who don't have an AP nearby, it is possible to rent an AP for 100 EUR from us to have WLAN for you and your neighbourhood.
Private APs aren't allowed in our network!
- Overview over AP locations: WLAN AP Locations
- To use the WLAN you have to register from your wired network access: http://whfunk.server.whnetz
- Manuals for Linux and Windows are here: WH-Funk Konfiguration
- Technical background information here: WH-Funk Project Page
Further questions as always to: support@wh-netz.de
2004-06-16: Changes in how you can send mails from the dormitory
Hallo,
Das BelWü (Wissenschaftsnetz Baden-Württemberg) hat beschlossen
ab dem 1.7.2004 ausgehende E-Mails (TCP Port 25) zu sperren, wenn
diese nicht über ein BelWü-Mailrelay gehen.
Siehe: http://www.belwue.de/security/tcp25.html
Dies hat weitreichende Konsequenzen und wird bei den meisten eine
Änderung der Konfiguration erfordern, um weiterhin E-Mails
versenden zu können (der E-Mail-Empfang bleibt davon normalerweise
unberührt; TCP-Port 110 wird nicht gesperrt). Daher ist es wichtig
diese Mail genau durchzulesen.
Hintergrund dessen sind die seit vorgestern auch aus den Wohnheimen
Baden-Württembergs massenhaft verbreiteten rechtsradikalen
Spam-Mails, die von Rechnern verschickt werden, die mit dem Wurm
Sober.G infiziert sind.
Siehe auch:
http://www.heise.de/newsticker/meldung/48121
http://www.heise.de/newsticker/meldung/48135
Theoretisch sollte diese neue Portsperre von TCP-Port 25 keine
Auswirkungen haben, wenn für ausgehende Mails ein Mailrelay von
BelWü, WH-Netz oder Selfnet ein eingetragen wird. (Anleitungen siehe
http://www.wh-netz.de/knowledgebase/howtos/MailRelay.de.htm)
Wer dieses Mailrelay nicht in seinem E-Mail-Programm einträgt und
stattdessen den Server eines anderen Anbieters eingetragen hat, wird
demnächst keine E-Mails mehr verschicken können.
Soweit zur Theorie, in der Praxis hat dies jedoch leider die
Auswirkung, dass E-Mails die aus dem Wohnheim heraus verschickt
werden und als Absender ein Account eines größeren Anbieters
(z.B. GMX, Web.de, hotmail.com, aol.com, yahoo.com, t-online.de,
bluewin.ch, arcor.de, genion.de, etc) oder auch den Namen einer
größeren Firma benutzen, in vielen Fällen als Spam betrachtet
werden, da diese E-Mails nun über unser oder das BelWü-Mailrelay
verschickt werden und nicht mehr über den Mailserver des jeweiligen
Providers.
Insbesondere Anti-Spam-Mechanismen wie SPF, DomainKeys, Caller-ID
und weitere sind damit nicht mehr möglich, da diese voraussetzen,
dass eine authentifizierte Verbindung (SMTP-Auth) zum jeweiligen
Anbieter aufgebaut werden kann.
Um weiterhin sinnvoll Mails aus dem Wohnheim verschicken zu können,
sollte man daher als Absender-Adresse nur noch seinen
Universitäts-Account benutzen. (Wer eine eigene kleine Domain
besitzt, sollte in aller Regel auch Accounts dieser Domain als
Absender benutzen können.)
Es gibt mehrere Möglichkeiten diese Beschränkungen zu umgehen,
diese müssen jedoch vom jeweiligen Mail-Provider angeboten werden.
Als da wären:
- AUTH-SMTP: Passwort geschützte Übertragung auf Port 587
z.B. bei GMX möglich: mail.gmx.de Port: 587
- SMTP-SSL: Verschlüsselte Übertragung auf Port 465
z.B. bei Freenet möglich: mx.freenet.de Port: 465
(Authentifiziertes oder mit SSL/TLS verschlüsseltes SMTP über Port
25 wird jedoch auch nicht mehr möglich sein!)
Außerdem sind diejenigen, die E-Mails komplett OHNE Mailprogramm,
d.h. ausschließlich über die Webseite des Anbieters verschicken
nicht von der Sperre betroffen.
Wir werden in den nächsten Tagen Anleitungen für verschiedene
Email-Programme schreiben, und diese auf unseren Webseiten
veröffentlichen, bitten aber darum diesbezügliche Fragen vorerst
nicht an uns sondern im Forum zu stellen, da wir die zu erwartende
Vielzahl an Fragen und Problemen höchstwahrscheinlich nicht
bewältigen werden können.
Wir (Selfnet und WH-Netz) hätten diese Sperre selbst nie in dieser
Form eingeführt und können auch die Entscheidung des BelWue nicht
beeinflussen, bitte beschwert Euch also nicht bei uns darüber.
Zusammenfassung:
----------------
Was wird weiterhin funktionieren:
- Emails abholen
- Alle Webmail-Oberflächen (Mails im Browser schreiben)
- Mail-Anbieter mit AUTH-SMTP oder mit SMTP-SSL (z.B. GMX)
- kleinere Mail-Anbieter ohne Sender Spamschutz (z.B. Uni-Stuttgart)
Was wird nicht mehr funktionieren:
- Mail-Anbieter ohne AUTH-SMTP und ohne SMTP-SSL (z.B. Web.de)
Mehr Infos und Anleitungen (wird in den nächsten Tagen ergänzt):
http://www.wh-netz.de/knowledgebase/howtos/EmailProgramme.de.htm
Fragen dazu bitte vorerst nur im Forum:
http://www.wh-netz.de/community/forum/list.php?f=1
Mit freundlichen Grüßen,
Euer WH-Netz Tutorium.
---------------------- english version ------------------------
Hello,
The BelWue (scientific network of Baden-Wuerttemberg; providing our
Internet-link) has decided to block every outgoing email if not
sent via a BelWue-mailrelay from now on.
For details see: http://www.belwue.de/security/tcp25.html
This has far reaching consequences und most users will have to change
their email configuration in order to be able to send mail (receiving
mail is not affected). Thus you should read this email carefully.
Background is the massive spread of spam mails including right wing
extremist content also from dormitories in BaWue by systems infected with
the Internet worm Sober.G. Vide:
http://www.heise.de/newsticker/meldung/48121 (in german)
http://www.heise.de/newsticker/meldung/48135 (in german)
In theory this new block of port 25 should not have consequences if you
use wh-netz, selfnet or a BelWue mail relay for outgoing emails.
(see instructions (in german) on:
http://www.wh-netz.de/knowledgebase/howtos/MailRelay.de.htm )
If you don't use this mail relay in your mail program instead of
the server of a your mail-provider you will not be able to send emails
from today. People using different port for outgoing mail, like SMTPS
(TLS/SSL) via port 465 are not affected.
So far with the theory. Practically this unfortunately has the
consequence that mails sent out of the dormitories having an addresser
field (the '_from'_ field) from one of the big provider (e.g. GMX,
Web.de, hotmail.com, yahoo.com, t-online.de, bluewin.ch, arcor.de,
genion.de...) or a big company will often be considered as spam. The
reason: These mails are sent using our or the BelWue mail relay instead
of the server of the respective provider.
Additionally anti spam mechanisms like SPF, domain keys, caller-ID and
other are not usable any more, since they presume that there is an
authenticated connection (SMTP-Auth) to the respective Provider.
Thus to furthermore be able to send emails from the dormitories without
the risk that the mail will be treated as spam, we suggest that you use
an university account as addresser (likemas12345@stud.uni-stuttgart.de).
(If you have an own little domain you usually shouldn't have problems
using accounts from from this domain too.)
There are several Opportunities to circumvent these restrictions, but
they need to be supported by the mail provider.
Here they are:
- AUTH-SMTP: Password secured transmission using port 587
e.g. possible with GMX: mail.gmx.de port: 587
- SMTP-SSL: Encrypted transmission using port 465
e.g. possible with Freenet: mx.freenet.de port: 465
(But authenticated or SSL/TLS encrypted SMTP on port 25 will not be
possible too!)
Besides, everybody writing mails WITHOUT a mail program, using the web
site of the provider instead, is not affected.
We are going to write HOWTOs for various mail programs and publish them
on our websites. However, we need to ask you to address questions not to
us but to the forum. Otherwise we would be overwhelmed by the expected
number of questions.
We (Selfnet und WH-Netz) wouldn't have established the blockade this way
and also cannot influence the decision of the BelWue, so please don't
complain to us.
Summary:
--------
This will still work:
- fetch emails
- all web front ends (writing mails in the web browser)
- mail provider with AUTH-SMTP or with SMTP-SSL (e.g. GMX)
- smaller mail provider without spam guard (e.g. Uni-Stuttgart)
This won't work anymore:
- mail provider without AUTH-SMTP and without SMTP-SSL (e.g. Web.de)
More information and instructions on:
http://www.wh-netz.de/knowledgebase/howtos/EmailProgramme.de.htm
(will be extended within the next few days)
For questions please ask in the forum:
http://www.wh-netz.de/community/forum/list.php?f=1
Regards,
WH-Netz Team.
2004-06-08: Cabling of Straussi 3 delayed
We are sorry, but the cabling of Straussi 3 will be delayed further, because the net hasn't been handed over to us yet.
We will notify you when the net is ready as soon as possible.