End of the story;
I switch the SagemCom to bridge mode and connected a Netgear router.
On the Netgear I set port forwarding to my server and abracadabra port 80 and 433 are now accessible from the outside. Conclusion the router is cheap “rubbish”. ![]()
Now it seems that I have to fight with my ISP or find another ISP using this infrastructure (market is complicate and tycoons rules in Israel) because while they understand the problem they refuse to provide a solution that will allow to remove the modem (suck…s !) so they’ll keep charging me for a router I don’t want.
Thanks all for the help !