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Koos van den Hout

Welcome. This is my homepage where I write about my opinion, projects, things I note, things I try and other random stuff. Newsitems have tags for a bit of structure.

Latest news/thoughts/geeking/rants/notablog

2014-12-19 (#) 14 hours ago
Ik denk dat Univé een betere spammer e-mail marketing bedrijf moet inhuren. Uit de tekstversie van de laatste nieuwsbrief:
Subject: Uw kans om het nieuwste boek van Jamie Oliver te winnen.

                      U  N  I  V  É
                      VERZEKERINGEN

  ---------------------------------------------------------

  U heeft een bericht van de ASN Bank ontvangen.
  Omdat uw systeem niet automatisch de HTML versie opent,
  kunt u niet de complete e-mail bekijken. Wij verwijzen
  u graag naar onze website asnbank.nl om over onze nieuwe
  website over duurzaam beleggen te lezen.

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2014-12-16 Adding my weatherstation to the APRS maps 3 days ago
I still had the wish to submit the Weather station Utrecht Overvecht to the APRS network to get the data on the APRS maps and maybe even added to the Citizen Weather Observer Program.

APRS stands for Automatic Packet Reporting System which allows lots of information to be automatically exchanged. The most well-known one is position reporting, but there is a lot more, including weather stations.

It wasn't very hard to get this done, I just had to find the time to do it. The trigger was the mention of a new APRS server in the Netherlands at Amsterdamse APRS server - PA4TW. I played a bit with the perl modules Ham::APRS::IS and Ham::APRS::FAP. Ham::APRS::IS is for communicating with the APRS-IS network. And Ham::APRS::FAP is for parsing APRS packets. I used this module to make very sure my outgoing packets parse correctly before actually submitting them to the network (and still making a few mistakes in the process).

I used the explanation and example at APRSWXNET information by Philip Gladstone to find out what to submit and in which format. The interesting point is that wind measurements can not be omitted, but since I don't have a working wind measuring setup I have to enter the '...' values to show that the measurement is not available. And temperatures are measured in Fahrenheit so I have to convert first from my measurements.

The current outgoing packets look like:
PD4KH-1>APRS,TCPIP*:/161010z5206.6 N\00507.1 E_.../...g...t045h91b10088http://weatherstation.idefix.net/
And now the weatherstation shows fine: PD4KH-1 weatherstation on aprs.fi and Weather stations near PD4KH-1 on findu.com. Note how aprs.fi converts to degrees Celcius and findu.com stays in Fahrenheit.

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2014-12-14 N-cursus radiozendamateur in Utrecht 5 days ago
Bij de Veron afdeling Centrum is vanaf 5 januari 2015 weer plaats voor enkele cursisten die de "Novice" amateur radio licentie willen behalen. Voor mensen uit de buurt die nadenken om dat een keer te halen misschien het ideale goede voornemen voor 2015!

Meer informatie: N-cursus radiozendamateur Fort de Gagel start 5-01-2015.

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2014-12-14 (Dalek garbage can. Exterminate all garbage!) 5 days ago
Google+Koos van den Hout : Dalek garbage can. Exterminate all garbage!
2014-12-13 (In searching for a TCXO for my FT-857 I also ran across this item on aliexpress and decided to buy it...) 6 days ago
Google+Koos van den Hout : In searching for a TCXO for my FT-857 I also ran across this item on aliexpress and decided to buy it. This should enable me to use a good PC headset on the radio for voice operations.
I wasn't sure why it needs a CAT interface but looking at the windcamp website combined with the aliexpress description I guess this is just a second CAT interface to the radio.
2014-12-12 (Trying to make a picture of my FT-857 radio for my http://pd4kh.idefix.net/ site. The radio is in the...) 1 week ago
Google+Koos van den Hout : Trying to make a picture of my FT-857 radio for my http://pd4kh.idefix.net/ site.
The radio is in the mode I use most at the moment: PSK31 on 10M HF.
I'm not completely satisfied yet with the picture or the placement on the site but it's a start, and it's my picture of my radio which is a lot better than some stock picture.
2014-12-11 IPv6 breaking without default router 1 week ago
Interesting type of IPv6 breakage currently at the Surf office:
Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . : eduroamers.nl
   IPv6 Address. . . . . . . . . . . : 2001:610:188:431:9d25:9938:408e:6714
   Temporary IPv6 Address. . . . . . : 2001:610:188:431:2c5e:681:fda1:702
   Link-local IPv6 Address . . . . . : fe80::9d25:9938:408e:6714%11
   IPv4 Address. . . . . . . . . . . : 145.96.1.57
   Subnet Mask . . . . . . . . . . . : 255.255.252.0
   Default Gateway . . . . . . . . . : 145.96.0.1
What's missing here? A default gateway for IPv6. Which breaks any external IPv6 connectivity. And I like having external IPv6 connectivity, for example for logging into systems at home. The solution is simple:
C:\>ipconfig /renew6

Windows IP Configuration

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . : eduroamers.nl
   IPv6 Address. . . . . . . . . . . : 2001:610:188:431:9d25:9938:408e:6714
   Temporary IPv6 Address. . . . . . : 2001:610:188:431:2c5e:681:fda1:702
   Link-local IPv6 Address . . . . . : fe80::9d25:9938:408e:6714%11
   IPv4 Address. . . . . . . . . . . : 145.96.1.57
   Subnet Mask . . . . . . . . . . . : 255.255.252.0
   Default Gateway . . . . . . . . . : fe80::222:dff:fe84:8800%11
                                       145.96.0.1
I wonder how this happens.

Update 2014-12-15: And I got in touch with someone at SURFnet who suggested the best cause of action: see if this problem persists after the upcoming move of the SURFnet offices.

2014-12-10 (PA3FYM explaining the setup he used for the CQWW CW contest on 160m.) 1 week ago
Google+Koos van den Hout : PA3FYM explaining the setup he used for the CQWW CW contest on 160m.
2014-12-10 (#) 1 week ago
Sommige slechte spam vertalingen worden van zichzelf weer erg grappig:
Ik schrijf u thismessage met tranen en verdriet en ik weet dat deze massage zal u verrassen

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2014-12-09 (I'm seeing SSH attempts for admin, ftpuser and D-Link from high numbers of addresses.) 1 week ago
Google+Koos van den Hout : I'm seeing SSH attempts for admin, ftpuser and D-Link from high numbers of addresses.
2014-12-09 SSH attacks for accounts ftpuser, admin and D-Link 1 week ago
Loads of mail from fail2ban-SSH on two separate hosts showing random hosts doing ssh attempts for 3 accounts since 18:58 this evening. The pattern looks like:
Dec  9 18:58:04 greenblatt sshd[28304]: Invalid user ftpuser from 78.90.110.205
Dec  9 18:58:04 greenblatt sshd[28310]: Invalid user admin from 78.90.110.205
Dec  9 18:58:05 greenblatt sshd[28312]: Invalid user D-Link from 78.90.110.205
Dec  9 19:06:54 greenblatt sshd[29099]: Invalid user ftpuser from 84.19.184.65
Dec  9 19:06:55 greenblatt sshd[29101]: Invalid user admin from 84.19.184.65
Dec  9 19:06:55 greenblatt sshd[29103]: Invalid user D-Link from 84.19.184.65
And it goes on and on...
Read the rest of SSH attacks for accounts ftpuser, admin and D-Link

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2014-12-09 (Afvalwijzer heeft een beetje moeite met het correct uitvoeren van push notificaties) 1 week ago
Google+Koos van den Hout : Afvalwijzer heeft een beetje moeite met het correct uitvoeren van push notificaties
2014-12-05 DAB services scan 5 December 2014 2 weeks ago
Tijd voor een DAB services scan. Nu de aanbestedingen voor de bovenregionale DAB netten lopen zal er over een tijdje wel een uitbreiding komen van het aanbod.
Read the rest of DAB services scan 5 December 2014

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2014-12-05 (#) 2 weeks ago
Lots of spam the last few days for www.omerta.cc. Since www.omerta.cc is a website where stolen credit card information is traded where you have to pay to get in I don't think they really want to advertise themselves. So this is probably a joe-job. Which won't work much since www.omerta.cc is hiding behind cloudflare.

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2014-12-04 (Really interesting presentation. The one thing I do note is that a lot of experimenting is done with...) 2 weeks ago
Google+Koos van den Hout : Really interesting presentation. The one thing I do note is that a lot of experimenting is done with new(er) technologies but people keep beating up IPv4 RFC1918 space (10.x.y.z IPv4 addresses). IPv6 can do so much more and with some thinking about addressing policies a globally routable network can be created which will not clash with any address on other networks.
2014-12-03 (Big plans at Amsat India! "We are pleased to announce that AMSAT India and Dhruva Space Pvt. Ltd. have...) 2 weeks ago
Google+Koos van den Hout : Big plans at Amsat India!

"We are pleased to announce that AMSAT India and Dhruva Space Pvt. Ltd. have signed a Memorandum of Understanding on November 30th 2014 to pursue the development of a follow up mission to HAMSAT launched in 2005 on-board the PSLV-C6. HAMSAT II is envisioned to fill the gap created by the recent end of life of HAMSAT and shall continue servicing the societal needs in disaster management, amateur/emergency radio communications and education. Some of the contemplated payloads for HAMSAT II include

* U/V Analog FM Transponder
* U/V Linear Transponder, 50 kHz
* APRS Digipeater
* Digitalker

Dhruva Space is developing the complete satellite bus including all the spacecraft subsystems such as the electrical power system, attitude control system, communication system, structure and on-board computer. AMSAT India shall deliver the payloads for the satellite. The satellite is intended to be flown into a Polar Sun synchronous Low Earth Orbit.

This memorandum of understanding has brought together some of the best minds of AMSAT India and Dhruva Space. They are extremely delighted about the association and expressed their happiness on coming together to pursue their quest for innovation in space"
2014-11-28 Moving the lightning strike detector to the shed 3 weeks ago
I have noticed the lightning strike detection in Weather station Utrecht Overvecht goes completely mad when I transmit on the 20 meter amateur band. With the detector being quite close to the antenna I can understand this.

The solution will be to find a place to mount the detector in the shed. It will be lower (less reception of the radio energy of the strikes) but it will also be further away from my interference.

That also means the reading of the detector will have to be done using w1retap since that is what I use on the shed weatherstation computer. I was a bit confused whether w1retap supports this counter but I found out it's based on the DS2423 counter chip which is supported in w1retap, as part of a wind speed meter in a TAI8515 weather station, but w1retap will give the count on readout and the conversion is up to the user.

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2014-11-26 Getting the DSL linespeed from the Fritz!Box 7360 3 weeks ago
The fact I couldn't get the DSL linespeed from the Fritz!Box 7360 annoyed me a lot, especially since there is a new telephone wiring cabinet which should raise VDSL2 speeds. I went through a number of websites about getting data out of the Fritz!Box with upnp, and finally I made it work and I get the results I want:
<NewLayer1UpstreamMaxBitRate>1480000</NewLayer1UpstreamMaxBitRate>
<NewLayer1DownstreamMaxBitRate>23144000</NewLayer1DownstreamMaxBitRate>
The hint that worked for me was at MRTG en Fritz!Box 7360 (firmware 124.06.05) - tweakers (in Dutch) where it mentiones the changeover to TR-064 protocol which should be reachable over the http://192.168.178.1/tr064/tr64desc.xml url which will ask for authentication with the root username and the Fritz!Box password. More about the Fritz!Box TR-064 implementation at Schnittstellen für Entwickler | AVM Deutschland (in German) which has more documentation at AVM TR-064 – First Steps (pdf, English). This made me end up at doing a SOAP request (post) to http://192.168.178.1/tr064/upnp/control/wancommonifconfig1 which failed. All SOAP requests fail with an HTTP error code 500, but there is a separate SOAP error set in the HTTP status 500 body. I used tcpdump to look at the SOAP error body and found:
<errorCode>504</errorCode> <errorDescription>SSL needed</errorDescription></UPnPError>
The SSL port is (according to the TR-064 first steps document above) 49443 and the URL is over SSL: https://192.168.179.1:49443/upnp/control/wancommonifconfig1 and this works, giving the answers I want.
Read the rest of Getting the DSL linespeed from the Fritz!Box 7360

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2014-11-26 (Joined this community because I bought an FT-857 secondhand last summer. I bought it with the idea portable...) 3 weeks ago
Google+Koos van den Hout : Joined this community because I bought an FT-857 secondhand last summer. I bought it with the idea portable sat ops (walking) would be possible but it turns out I let it sit on the table due to the weight of the radio+battery and wave with the antenna.
I also chose it because I hoped to get into HF a bit. Which turned out fine: digital modes on HF work as soon as there is enough propagation to get signal levels above the urban radio noise.
2014-11-24 Updates to my homepage 3 weeks ago
With some newsitems here on my homepage getting longer I started to feel the need to make a more blog-like format possible with items with an introduction and longer text. And titles here and there to give a better title to newsitems that deserve it. So some changes to the database format, support scripts and all the scripts generating pages.

The changes were big enough to update the version number so now it is 4.5.

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2014-11-24 (The site with the answer to "how is your day/week in information security".) 3 weeks ago
Google+Koos van den Hout : The site with the answer to "how is your day/week in information security".
2014-11-22 (Working at a university with a reasonable open policy for finding e-mail addresses of employees (which...) 3 weeks ago
Google+Koos van den Hout : Working at a university with a reasonable open policy for finding e-mail addresses of employees (which originated before spammers invented themselves) I receive my share of 'you must submit a paper to our prestigious conference/journal on such a broad range of subjects anyone working at your department can enter'. This result is not unexpected giving what I found when looking up some of those names.
Found via https://twitter.com/reyammer/status/536039160574799872
#spam #fakejournals
2014-11-22 (https://www.facebook.com/video.php?v=836250526414051&fref=nf) 3 weeks ago
Google+Koos van den Hout : A well-produced and very nice video of raising an HF amateur radio antenna on the roof of a building. Using a drone, timelapses and other visual techniques makes this an interesting video of what can turn into a boring subject.
2014-11-21 (#) 4 weeks ago
It seems I am a very special person for google: the 'Birthdays' calendar which should be filled with the birthdays of all people in your google+ circles had the option to remove it from the list of calendars or unsubscribe totally. After being on the receiving end of some rants about this it is clear a lot of people don't have the option to get rid of this calendar. I found a possible workaround: How to delete the Birthdays Calendar from your Google Calendar.

Update 2014-11-28: I was happy too early: now the calendar is back (without me asking for it) and I can't disable it normally.

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The person

Father, cat owned/owner, Unix/Linux fan, Internet user, reader, recumbent byciclist, snowboarder, ipv6 fan. For those who don't speak Dutch: how to pronounce Koos van den Hout.

The job

Specialist information security at Utrecht University with a modern Profile page.
 

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Your IPv4 address is 54.161.192.61 in United States

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Weather projects

Weather station

Temperature : 9.5 °C
Humidity : 76.9 %
Airpressure : 1015.7 hPa

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Koos van den Hout, reachable as koos+website@koos.idefix.net. PGP key DSS/1024 2C66 3B5D F0D7 C263 via keyservers PGP key DSS/1024 2C66 3B5D F0D7 C263 local copy pgp key statistics for 0x2C663B5DF0D7C263 Koos van den Hout
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Meningen zijn die van mezelf, wat ik schrijf is beschermd door auteursrecht. Sommige publicaties bevatten een expliciete vermelding dat ze ongevraagd gedeeld mogen worden.
My opinions are my own, what I write is protected by copyrights. Some publications contain an explicit license statement which allows sharing without asking permission.
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