@r2504 (deel van 't meubilair):
Thanks for your suggestion: will check that when back at home and let you know the outcome.
Will buy you a couple of beers when that resolves my issue! :beerchug:

here is the results of a webbased NMAP of 10 mins ago (I obfuscated the IP address and logical name ...

@serialchiller: Your post is useful but I was aware of that since mijntelenet.be tells you that on the modem config screen.

@r2504: I'll explain my setup: I have a raspberry PI running sshd on port 2222 and apache2 on 8080
Have changed the sshd port from 22 to 2222 and the apache from 80 to 8080 ...

@Kenniey: I am testing remotely (from work on ADSL - so no company network involved) with Linux and NMAP portscan
Also test via mobile phone hotspot thru GSM network
Result is exactly the same: nothing works with his modem 24*8 DOC 3 WIRELESS(DOCSIS) - EURODOCSIS 3.0 - in other words I can not get ...

Hello Benoit,

I have the same issue: locally everything works fine
Remotely nothing works: not even the DMZ.

When I perform a portscan remotely I always get that the ports are either "filtered" or "closed" but never open.

Discussing this with the helpdesk is useless - spend 30 mins yesterday and ...