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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Routers’ Category

Research list: machine sometimes not visible on LAN

Posted by jpluimers on 2019/04/08

When one of the machine isn’t active for a while it seems to disappear. Even when it’s active some of the machines have intermittent errors pinging it as like every 10-30 seconds one of these ping results appear:

92 bytes from tl-er5120 (192.168.71.1): Redirect Host(New addr: 192.168.71.193)
Vr HL TOS  Len   ID Flg  off TTL Pro  cks      Src      Dst
 4  5  00 0054 05de   0 0000  40  01 644d 192.168.71.108  192.168.71.193

Sometimes even a simple

Request timeout for icmp_seq 6900

So I need to dig into  ICMP “Redirect Host” .

It might be a simple ARP thing like mac mini – Why the different results for ping? Or why is the Time Capsule getting involved? – Ask Different [WayBack] but like usual stuff I bump into is of a more complex kind so I’ve archived at least these:

–jeroen

Posted in Internet, MikroTik, Power User, Routers | Leave a Comment »

No more https://www.whatsapp.com/cidr.txt

Posted by jpluimers on 2018/12/11

Not sure when this happened but the CIDR list is no more [WayBackhttps://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 [WayBackBlock 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 »

How to configure pfSense as multi wan (DUAL WAN) load balance failover router – nixCraft

Posted by jpluimers on 2018/12/03

This will come in useful one day:

Notes for monitoring at [WayBackMulti-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 »

IPv4 to IPv6 conversion on a load balancer causing rare packet loss

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 »

Skype consumer IP ranges

Posted by jpluimers on 2018/07/09

Since I will likely have to enable Skype in a relatively restricted environment, here are some links that likely will help me getting IP lists to open up:

–jeroen

Posted in Internet, Power User, Routers, Skype | Leave a Comment »

 
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