Network configuration - possibly ISP-related ? [fixed]
I recently found a strange issue related to network configuration:
To provide a fixed network pass for people to connect my kiwi's from the Internet I use:
while xxxx stands for the port numbers of 8073... 8078 for my 6 kiwi's. These are the URL's which are displayed on the registered rx website: http://kiwisdr.com/public/ when you search for my call
Until recently I could usually connect with my tablet from the livingroom by using this external address:
on5kq.ddns.net:8073 to connect to the first kiwi...
My tablet is just another client on the intenal network, connected via my local WiFi LAN
However since recently this doesn't work anymore and it is impossible to even ping from inside my home network to this address- which always worked for years before...
It looks as if something has fundamentally changed.
Can someone explain to me, what might have changed?
Is this probably related to a change at my Internet Service Provider (ISP)?
Is this a common "problem" ??
The only way how I can check now, if my kiwi's can be accessed from the public, is to use my cellphone and connect to Internet via the Cellphone - then on5kq.ddns.net:XXXX connects to the related kiwi correctly
What would be a reason for an ISP to block such "Selftest" connections, where a user tries to use the external IP-address to connect to a internal device - simply to check, if it is accessible from outside...