News items for tag english - Koos van den Hout

2019-03-19 Time to update putty 2 days ago
An interesting bit of news: SSH client gets patched after RSA key exchange memory vuln spotted.
The fixes implemented on PuTTY over the weekend include new features plugging a plethora of vulns in the Telnet and SSH client, most of which were uncovered as part of an EU-sponsored HackerOne bug bounty.
Get your updated putty at the PuTTY download page.

Update: Interesting visual change in putty: informational lines from the client are now prefixed by a putty logo. This could make it harder to mislead the user in certain attacks.

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2019-03-17 Still working and sometimes struggling learning morse 4 days ago
Every week there is an hour of morse training at my radio club, see article CW cursus op PI4UTR (Dutch). And I'm going there every week I can, as learning morse is an important part of my amateur radio resolutions for 2019.

We're training with the G4FON morse trainer which uses the Koch method (order of characters to learn) to learn morse and so-called Fairnsworth timing (playing the dits and dahs of the characters at the high speed but leaving room to think about what you just heard).

I am doing ok, now we're getting to the level of 37 characters I have a hard time remembering the newest characters. Constant exercise seems the only way to fix this a bit, making exercises with just the characters I keep making mistakes in, although I can go blank again on new characters when switching to testing the whole set. As soon as I get reasonable low amounts of errors I'll try to raise the speed (by raising the effective speed, the dits and dahs of a single letter still come at 15 words per minute).

I want to learn this, with the plan to pass the Belgian CW test some day, and get up to enough speed to be able to participate in morse parts of contests and DX contacts. But there will be a lot of practice before I'm at that level.

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2019-03-13 Scam mail really on the rise 1 week ago
According to “FINAL WARNING” email – have they really hacked your webcam? - Naked Security there is a big flood the last day(s) of "Sextortion" scam mails going around. Don't fall for these. It's all fake.

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2019-03-13 My lineup of amateur radio related podcasts 1 week ago
I like hearing about other experiences in amateur radio from around the world. Podcasts are an easy way to hear experiences, news and opinions from other amateurs. And they fit nicely into my daily commute.

The list of amateur radio related podcasts I follow:

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2019-03-11 I participated in the EA PSK63 contest 2019 1 week ago
PSK63 contest in fldigi This weekend was the EA PSK63 Contest and I participated Saturday evening, Sunday morning and a bit Sunday afternoon. I planned to participate in this contest so I set up the endfed antenna outside Friday evening because I would be away most of the Saturday daytime.

With the current radio propagation and a serious part of my participation after sunset I decided to enter in the single operator 40 meter category. I made 106 contacts, with 25 different spanish provinces in the log (out of 52 possible province codes). Spain by itself has 50 provinces with Ceuta and Melilla not counting as a province but they do count in the contest.

I also participated in the EA PSK63 contest 2016 with 60 contacts and EA PSK63 contest 2018 with 125 contacts (but only 79 in the 40 meter band).

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2019-03-08 Another extortion attempt mentioning video 1 week ago
In the inbox this morning, another attempt at extortion.
Subject: IMPORTANT! You have been recorded masturbating! I have Koos Website.mp4!

Hi there,

The last time you visited a porn website with teens,
you downloaded and installed the software I developed.

My program has turned on your camera and recorded
the process of your masturbation.

My software has also grabbed all your email contact lists
and a list of your friends on Facebook.

I have the - Koos Website.mp4 - with you jerking off to teens
as well as a file with all your contacts on my computer.

You are very perverted!

If you want me to delete both the files and keep the secret,
you must send me Bitcoin payment. I give you 72 hours for the payment.

If you don't know how to pay with Bitcoin, visit Google and search.

Send 2.000 USD to this Bitcoin address as soon as possible:

(copy and paste)

1 BTC = 3,850 USD right now, so send exactly 0.525386 BTC
to the address provided above.
Do not try to cheat me!
As soon as you open this Email I will know you opened it.
I am tracking all actions on your device.

This Bitcoin address is linked to you only,
so I will know when you send the correct amount.
When you pay in full, I will remove both files and deactivate my program.

If you don't send the payment, I will send your masturbation video
to ALL YOUR FRIENDS AND ASSOCIATES from your contact lists I hacked.

Here are the payment details again:

Send 0.525386 BTC to this Bitcoin address:


You саn visit police but nobody can help you. I know what I am doing.
I don't live in your country and I know how to stay anonymous.

Don't try to deceive me - I will know it immediately - my spy software is
recording all the websites you visit and all keys you press.
If you do - I will send this ugly recording to everyone you know,
including your family.

Don't cheat me! Don't forget the shame and if you ignore this message your
life will be ruined.

I am waiting for your Bitcoin payment.
You have 72 hours left.

Anonymous Hacker
Given the address it's clear someone managed to visit this website. Actually hacking my computer and removing the webcam cover or installing the webcam is harder!

Bitcoin links: Report history for 34vKT8SpK2zYAgJUDww9ih1o7Ky3JKmCdP - Bitcoin Abuse Database and Bitcoin Address 34vKT8SpK2zYAgJUDww9ih1o7Ky3JKmCdP.

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2019-02-17 Sunday ISS pass with good results 1 month ago
Slow Scan TV transmitted from the International Space Station by Koos van den Hout PE4KH 2019-02-17 Slow Scan TV transmitted from the International Space Station by Koos van den Hout PE4KH 2019-02-17 Slow Scan TV transmitted from the International Space Station by Koos van den Hout PE4KH 2019-02-17 Sunday had less time to be at the radio for ISS passes but one pass was ok. It started with the end of one image, one full image and the start of the next image. The audio recording of the whole pass is included.
Listen to audio attachment:
MP3 media: ISS pass with SSTV 20190217 at JO22NC recorded by PE4KH (rightclick, select save-as to download)

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2019-02-16 One more ISS pass with good results receiving slow scan TV 1 month ago
Slow Scan TV transmitted from the International Space Station by Koos van den Hout PE4KH 2019-02-16 Slow Scan TV transmitted from the International Space Station by Koos van den Hout PE4KH 2019-02-16 After hickups in recording audio from the radio on two previous passes I rebooted the whole system (it was nagging about a reboot anyway) and I received two more partial images.

Thanks to ARISS Russia team member Sergey Samburov, RV3DR for making this possible!

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2019-02-16 Second ISS SSTV pass: more results 1 month ago
Slow Scan TV transmitted from the International space station received by Koos van den Hout PE4KH on 2019-02-16 Slow Scan TV transmitted from the International space station received by Koos van den Hout PE4KH on 2019-02-16 Second pass of the International space station gave me one partial picture and one complete (with some noise).

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2019-02-16 Received SSTV from the ISS 1 month ago
Slow scan TV transmitted from the International space station received by Koos van den Hout PE4KH on 2019-02-16 In this weekend there are extra slow scan tv (SSTV) transmissions from the international space station (ISS). The ISS moves across the sky when viewed from earth so I calculate beforehand when it will pass across the sky and what the trajectory will be.

I woke up in time to be outside for the first one. A low pass over the horizon and most of the pass matched a pause between transmissions, so not much image received.

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2019-02-05 Starting tcpdump causes bluetooth drivers to be loaded .. on a virtual machine 1 month ago
I noticed something really weird in the kernel log of a virtual machine:
Feb  5 11:46:54 server kernel: [2936066.990621] Bluetooth: Core ver 2.22
Feb  5 11:46:54 server kernel: [2936067.005355] NET: Registered protocol family 31
Feb  5 11:46:54 server kernel: [2936067.005901] Bluetooth: HCI device and connection manager initialized
Feb  5 11:46:54 server kernel: [2936067.006404] Bluetooth: HCI socket layer initialized
Feb  5 11:46:54 server kernel: [2936067.006838] Bluetooth: L2CAP socket layer initialized
Feb  5 11:46:54 server kernel: [2936067.007280] Bluetooth: SCO socket layer initialized
Feb  5 11:46:54 server kernel: [2936067.009650] Netfilter messages via NETLINK v0.30.
Feb  5 11:46:54 server kernel: [2936067.056017] device eth0 entered promiscuous mode
The last two are the giveaway about what really happened: I started tcpdump to debug a problem. But I did not expect (and do not need) bluetooth drivers on a virtual machine, it will never have access to a bluetooth dongle.

After setting up /etc/modprobe.d/local-config.conf with
blacklist bluetooth
tcpdump still works fine and no bluetooth drivers are loaded.

Update: Most recommendations are to disable the bluetooth network family:
alias net-pf-31 off

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2019-02-01 Plotting the number of amateur radio contacts after a contesting month 1 month ago
QSO count plot up to January 2019 After a month with three digimode radio contests I plotted the number of amateur radio contacts again. The number of contacts is clearly higher each January as a contest month, with this January a new peak.

The contests were the ARRL RTTY Roundup on 6 and 7 January, the UBA PSK63 prefix contest on 12 and 13 January and the BARTG RTTY Sprint Contest on 26 and 27 January.

Nicer looking font due to the upgrade of "radio workstation" thompson. I guess even gnuplot is coming along with the modern times.

before, before, before, before

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2019-01-30 Misconfigured backups 1 month ago
I have "always" been running amanda for backups on linux. Or rather, I can't find any indication when I started doing that several homeserver versions ago, it's just still running.

Or it was running, but first I had to tackle a hardware problem: all SCSI controllers I have are PCI and the newest homeserver has no PCI slots. So I searched for a solution. The first solution was to try using the desktop system for the tapedrive, but the powersupply in that system has no 4-lead Molex connectors so I can't connect the tapedrive.

For now I use an old 'test' system with some software upgrades to run amanda and shut it down when all backups are done and flushed to tape. But amanda had a serious problem writing stuff to tape. With some debugging this turned out to be caused by the variable blocksize I used on the previous systems, with
# mt -f /dev/nst0 setblk 0
and I can't even find out why this seemed like a good idea years ago. But now amanda really wants to use 32768 byte blocks and filled a DDS-3 tape (12 Gb without compression) with about 1.8 Gb of data before reaching the end of the tape.

Why this default has changed isn't clear to me, but I found a way to re-initialize the tapes so the backups fit again. Based on block size mismatch - backup central I created a script to do this. I did not get the error about the blocksize, but I searched specifically for 'amanda 3.3.6 blocksize'.

if [ "$1" = "" ]; then
        echo "Usage: $0 <tapename>"

mt -f /dev/nst0 setblk 32768
mt -f /dev/nst0 compression 1
mt -f /dev/nst0 rewind
dd if=/dev/zero of=/dev/nst0 bs=32768 count=200
mt -f /dev/nst0 setblk 32768
mt -f /dev/nst0 compression 1
mt -f /dev/nst0 rewind
amlabel -f kzdoos $1
And now normal amounts of data fit on a tape again. I just have to initialize every tape before using it for the first time in this setup.

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2019-01-27 I participated in the BARTG RTTY Sprint Contest 1 month ago
RTTY contest on websdr This weekend I participated in the BARTG (British Amateur Radio Teledata Group) RTTY Sprint Contest.

I went into this contest with the idea of maybe getting some contacts and things turned out somewhat better than that: I made 82 contacts. No new countries or anything else special. The one that got away was PJ4P, Bonaire. I saw that station calling and I kept answering but the contact did not happen.

I used the topendfed antenna outside and the amplifier. So I entered in the high power category.

As with other recent contests the propagation wasn't cooperating very well. When I started in HF at home (October 2014) I would switch from 10 to 20 meters after it got dark because of the changing propagation. Now I change from 20 to 40 meters as soon as it starts to get a bit dark.
Read the rest of I participated in the BARTG RTTY Sprint Contest

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2019-01-14 I participated in the UBA PSK63 prefix radio contest 2 months ago
PSK63 contest in fldigi Like in 2015, 2016, 2017 and 2018 I participated in the UBA PSK63 Prefix Contest in the past weekend. Before I really dove into the contest I first mounted a new end-fed 10/20/40 antenna which can handle more power and tested it.

It took a few tries to get the antenna tuned on the 40 meter band. I tested this with the amplifier which has proven to be really precise about the SWR of the antenna in the 40 meter band, as noted in my post about the ARRL RTTY roundup 2019. I had planned to get this antenna up and running before that contest but that did not work out.

After testing I switched back to 50 watts power without the amplifier because the rules of the UBA PSK63 prefix contest limit the power.

I made a total of 69 contacts as single operator 40 meter. I had a short look at PSK63 activity in the 20 meter band during daylight but it was completely none.

After the contest I tried some FT8 contacts on the 40 meter band with the amplifier active. The amplifier did not like this and went into SWR protection. I must have tuned it perfectly for 7.040 - 7.050 MHz but the SWR is already outside the limits for the amplifier at 7.074 MHz.
Read the rest of I participated in the UBA PSK63 prefix radio contest

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2019-01-12 Enabling some old web userdirs 2 months ago
I received a "complaint" that a very old site on the webserver wasn't working anymore. I am not a person to just stop something without planning that so this was an oversight. It was one of the userdirs on Ivo van der Wijk who hasn't updated the page sinds 1994. No, really, not even the broken links.

In restoring this one and the others I found that php in userdirs is disabled by default nowadays, found via PHP not working in userdir (public_html) - devPlant. Maybe a good idea, but I only enable php on virtualhosts where I want it, so I disabled that rule. I hadn't missed it on my own webspace yet, but a site like Het online dagboek van hester (Renate) in Australie (en daar in de buurt) depend on PHP completely.

While I was looking for the reason the php failed I also noticed that /etc/apache2/mods-available/userdir.conf also has some configuration I do not appreciate, it enables userdirs globally when the module is loaded:
<IfModule mod_userdir.c>
        UserDir public_html
        UserDir disabled root

        <Directory /home/*/public_html>
                AllowOverride FileInfo AuthConfig Limit Indexes
                Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec
                Require method GET POST OPTIONS
I disabled that part: I only want the userdir to work on specific virtual hosts.

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2019-01-08 Amateur radio resolutions for 2019 2 months ago
The last time I did those was in 2017: Reviewing my 2016 amateur radio resolutions, and the new ones for 2017 and the hindsight results for 2017/2018 are:
  • Improve the holiday/portable setup with solar power and a lightweight multiband inverted V
    No solar power (due to costs) but the portable setup is improved and tested: the fiber mast I bought for playing radio from several locations including amateur radio from a local park. Now to find more time to actually use it.
  • Keep doing the digimode contests
    That part went better in 2017 and I had less time and/or energy for contests in 2018. Also in 2018 the interference situation got worse. So my net results in contests improved in 2017 and got worse in 2018.
  • Maybe those satellites
    I tried at least receiving them a few times, but no contacts yet.
  • Get a 2m/70cm vertical antenna on the roof of the dormer
    It's there, it has already been upgraded to a bigger antenna with higher gain and it's mostly used for 2 meter FT8. But also for actual talking to other radio amateurs sometimes.
The Sotabeams newsletter had an item "Setting your targets for 2019" which had some nice ideas and which triggered me to write this post. Things I want to try :
  • Keep learning morse!
  • Get more countries on more HF bands in the log
  • Moonbounce on 2 meter
  • Those digimode contests, and maybe a few phone contests
  • Operate HF outside
  • At least one satellite contact

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2019-01-08 Seeing the 451: Unavailable due to legal reasons in the wild 2 months ago
Today I tried to follow a link to but I got an error message:
451: Unavailable due to legal reasons

We recognize you are attempting to access this website from a country belonging to the European Economic Area (EEA) including the EU which enforces the General Data Protection Regulation (GDPR) and therefore access cannot be granted at this time
And indeed in the headers:
$ lynx -head -dump
HTTP/1.1 451 Unavailable For Legal Reasons
I see the real reason as 'not wanting to comply with European consumer protection laws'. I have no idea how many visitors the site is missing due to this regionblock but since it's a regional weekly newspaper in the United States of America: probably not a lot of the intended audience.

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2019-01-07 I participated in the ARRL RTTY Roundup 2 months ago
RTTY contest on websdr As planned I participated in the ARRL RTTY Roundup contest this weekend. It was possible to participate in FT8 mode but since I had not prepared for that and had no duplicate checking between FT8 and RTTY I decided to use the mode I am familiair with for this contest: RTTY.

I operated on the 40 meter band Saturday and Sunday evening, and on the 20 meter band during the daylight hours of Sunday. Everything was search and pounce, no responses to calling CQ. I used the power amplifier on the 20 meter band which did help in getting the contacts to almost every station I could decode. The amplifier does not like the SWR from the antenna on 40 meters so I ran without the amplifier on that band.

I made 115 contacts. A number of US stations, already the first new US state confirmed via LoTW. Two more new US states in the log, hope I can get those confirmed too.

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2019-01-02 New country in amateur radio: West Malaysia 2 months ago
In between a few other not too far FT8 contacts I suddenly had a contact with 9M2TO in West Malaysia, a new country for me in amateur radio. I had seen the call before but I did not expect the contact to happen.

And it's already confirmed via Logbook of The World too.

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PGP key 5BA9 368B E6F3 34E4 local copy PGP key 5BA9 368B E6F3 34E4 via keyservers pgp key statistics for 0x5BA9368BE6F334E4 Koos van den Hout
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