Archive for the ‘Network-and-equipment’ Category
Posted by jpluimers on 2018/12/11
Not sure when this happened but the CIDR list is no more [WayBack] https://www.whatsapp.com/cidr.txt:
Dear partners,
Please note that we have migrated the latest IP pools of WhatsApp to Facebook Mobile Partner Portal. Feel free to browse to the Settings page of the portal and download the latest WhatsApp IP pool: https://fb.me/mpp_support
Further IP pool updates are also done through the portal and are no longer distributed via email or through WhatsApp web site.
If you have not yet registered on the Mobile Partner Portal or have difficulties accessing it - please request access through the following form and we'll be happy to assist: https://fb.me/mpp_access
For any technical requests please contact us through the Support section of the portal: https://fb.me/mpp_support
WhatsApp team
In the past it was the place to get the CIDR so you could either block or allow WhatsApp traffic: [earlier WayBack]
It is still widely cited as way to regulate WhatsApp traffic, for instance at these places:
Time to find an automated way to get the replacement list. Maybe the below helps (via [WayBack] Block facebook messenger and whatsApp on Dlink router – Super User)
whois -h whois.radb.net '!gAS32934'
–jeroen
Posted in Android Devices, Development, Internet, Network-and-equipment, Power User, routers, SocialMedia, Software Development, Ubiquiti, WhatsApp, WhatsApp for Android, WiFi | Leave a Comment »
Posted by jpluimers on 2018/12/03
This will come in useful one day:
Notes for monitoring at [WayBack] Multi-WAN – PFSenseDocs: Gateway Groups
- monitoring packet loss on ADSL is cumbersome depending on the ADSL distance
- member down is the easiest to monitor, but on fiber can fail to detect packet loss (the connection seems online, but in fact doesn’t provide traffic)
–jeroen
Posted in Internet, pfSense, Power User, routers | Leave a Comment »
Posted by jpluimers on 2018/11/30
I forgot to document this earlier.
Many Fritz!Box devices cannot be upgraded to recent firmwares. The behaviour differs on hardware revisions of the same model. I’ve seen it happen on Fritz!Box 7360 devices, but others are could be affected too.
You can get the firmware revision using the trick here: FRITZ!Box call http://fritz.box/cgi-bin/system_status.
If your hardware revision is affected, do not expose it to the outside world.
You could still turn it into a local switch though: [WayBack] Convert FRITZ!Box 7360 to Managed Switch (or even Access Point) having it’s own IP address: Setting up the FRITZ!Box as an IP client.
I did this before even discovering about the hardware revision limits as I wanted to keep the full phone history when migrating from ADSL to fiber (which came with a brand new Fritz!Box 7490) and could use the extra LAN ports.
Fritz!Box 7360 hardware revision v1: limited to firmware 06.3x
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Posted in Fritz!, Fritz!Box, Internet, Power User | Leave a Comment »
Posted by jpluimers on 2018/11/29
Was working to get fritzcap to emit a list of interfaces so I could specify which one to capture.
For that I needed to parse the output of http://fritz.box/capture.lua which consists of HTML fragments like below.
What I needed was for each consecutive entries of [WayBack] th and first [WayBack] button tags:
- content of the
th tag
- content of the
value attribute of the button tag having a type="submit" attribute and name=start attribute
So before starting to work on it, I created [WayBack] In order to fix #5, print a list of available interfaces to potentially capture from · Issue #6 · jpluimers/fritzcap
The goal was to get a series of key/value pairs:
4-138 = AP2 (2.4 + 5 GHz, ath1) - Interface 1
4-137 = AP2 (2.4 + 5 GHz, ath1) - Interface 0
4-132 = AP (2.4 GHz, ath0) - Interface 1
4-131 = AP (2.4 GHz, ath0) - Interface 0
4-129 = HW (2.4 GHz, wifi0) - Interface 0
4-128 = WLAN Management Traffic - Interface 0a
So I built a class descending from [WayBack] HTMLParser — Simple HTML and XHTML parser that ships with the [WayBack] Python standard libraries.
If in the future I need more complex HTML parsing, then these links will help me choosing more feature rich parsers:
Back to the HTMLParser descendant in interfaces_dumper.py which can basically be condensed down to the code below.
handle_data is called for both start tags and end tags. The th value in data is only present in the start tag (at the time of end tag the data is empty), so you need to keep track of both last_start_tag and last_end_tag.handle_endtag maintains last_end_tag to help handle_data.handle_starttag maintains last_start_tag to help handle_data and also handles the button behaviour.
- The
buttonis only relevant if it has type="submit" and name="start" and a value attribute in that order.
- Output is in
data which is an array of key/value pairs.
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Posted in Development, Fritz!, Fritz!Box, fritzcap, Internet, Power User, Python, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2018/11/27
I’m not sure around which firmware versions Fritz!Box started to implement LUA links, but they are now on my research list.
Below a reference and where I found them.
A few notes first:
- There are many duplicates, which in due time I need to de-duplicate.
- The .lua links seem to override the old cgi-bin links (that are partially reverse engineered at [WayBack] Category:Befehle in /usr/www/cgi-bin – Fritz!Box).
- Usually, .lua links require a SID. In the web-ui, a Fritz!Box very much tries to hide that SID from URLs in the browser address bar (especially for firmware versions 06.50 and up) so the easiest to get them is this:
- Login to your Fritz!Box
- Manually copy any of the URLs in the left side
- Take the SID from there.
- More recent firmware versions hide the .lua links too, but you can see them when monitoring your network traffic in the developer mode of your web browser
Logging in programmatically needs a challenge response mechanism. It used to be at [Wayback] http://www.avm.de/de/Extern/Technical_Note_Session_ID.pdf but now has moved to [Wayback/Archive.is] https://avm.de/fileadmin/user_upload/Global/Service/Schnittstellen/AVM_Technical_Note_-_Session_ID.pdf
Here is the list:
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Posted in Development, Fritz!, Fritz!Box, Hardware Development, Hardware Interfacing, Internet, Power User | Leave a Comment »
Posted by jpluimers on 2018/11/22
One occasion I had SSH throw a Connection Reset by Peer on my when was the SD-card of a Raspberry Pi started failing and the ext4 filesystem got mounted in read-only mode.
Then sshd was still listening on port 22, but since it could not write to disk any more, it threw a Connection Reset by Peer to the client.
It was on OpenSuSE Tumbleweed, but would failed just as well using Raspbian.
Lessons learned:
- IoT hardware will fail.
ext4 breaks when the hardware breaks.
–jeroen
Reference:
Posted in *nix, *nix-tools, Debian, Development, Hardware Development, IoT Internet of Things, Linux, Network-and-equipment, openSuSE, Power User, Raspberry Pi, Raspbian, SuSE Linux, Tumbleweed | Leave a Comment »
Posted by jpluimers on 2018/11/22
While researching what the cgi-bin of Fritz!Box devices expose, I found this post on http://fritz.box/cgi-bin/system_status:
[WayBack] FRITZ!Box „Service Code“ auslesen und dekodieren – Antary
FRITZ!Box Fon WLAN 7390–B–041711–000121–533176–734744–147902–840604–28179–avm
- FRITZ!Box Modell (Name)
- Annex
- Gesamtlaufzeit der Box (Stunden, Tage, Monate, Jahre)
- Neustarts
- Hash
- Status
- Firmwareversion
- Sub-Version
- Branding
The site has the entries colour coded, but WordPress doesn’t allow for that.
I found out that on a Fritz!Box 7490 you do not need to logon, but on a Fritz!Box 7360 you have to.
The site has a few other interesting Fritz!Box posts as well:
–jeroen
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Posted by jpluimers on 2018/11/02
Nice find on not so nice packet conversion: [WayBack] Fun with IPv6 We were investigating packet loss. The loss rate was very low (smaller than 1 of 1000) but as UDP was used, it caused rare but noticeab… – Martin Seeger – Google+
Basically the load balancer could not cope well converting empty IPv4 UDP checksums to IPv6 and back.
Or like Kris mentioned it: [WayBack] Null. In Zahlen: -1., causing a nice set of comments to be posted on short term solutions versus long time forgotten problems.
–jeroen
Posted in Internet, IPv4, IPv6, Network-and-equipment, Power User, routers | Leave a Comment »
Posted by jpluimers on 2018/09/28
A while ago, I documented some links for In case I ever need to record calls on my Fritz!Box devices.
By now, I’ve done a bit more investigation: I’ve enabled the call monitor, did some port scans, installed domoticz and got deeper into fritzcap.
Oh and I got packet capturing to work too: Fritz!Box – capture network packets in Wireshark format or ISDN in dtrace format.
A small recap so I don’t forget what I did and what the effects were.
Enabling CallMonitor
[WayBack] Fritzbox – Domoticz showed how to enable the CallMonitor option in your Fritz!Box
- Dial
#96*5* to enable (response “CallMonitor On”)
- Dial
#96*4* to disable (response “CallMonitor Off”)
- It seems not possible to ask for the current state (enabled/disabled)
- After it is enabled, the TCP port 1012 on your Fritz!Box is available for tools like [WayBack] Domoticz and
fritzcap.
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Posted in *nix, Fritz!, Fritz!Box, Internet, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2018/09/24
You can capture network packets on a Fritz!Box for any interface by:
- appending `/html/capture.html` to the IP address of your Fritz!Box
- providing your credentials
- for ISDN traces optionally entering any
dtrace parameters in the edit box
- pressing the Start button for the port you want to capture
- pressing the Stop button when you are finished capturing
Example URL: 192.168.178.1/html/capture.html
Note it’s ISDN [WayBack] Dtrace – Fritz!Box, not nx kernel [WayBack] DTrace – Wikipedia
I’ve seen this on these devices:
- Fritz!Box 7360 running FRITZ!OS 06.30
- Fritz!Box 7490 running FRITZ!OS: 06.83
Note there are tons of tools allowing to capture from various scripting languages:
–jeroen
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Posted in Fritz!, Fritz!Box, Internet, Power User | Leave a Comment »
The Wiert Corner - irregular stream of stuff 