K, problem fixed with the help of our Internet Provider. Some steps where missing. Here are what needs to be done in order to deactivate NAT on our speedtouch. For example: Public IP addess of our Router: 12.34.56.78 Public IP addresses availables for our company: 12.34.56.70 to 12.23.56.77 I will set the router address to En savoir plus surSpeedtouch Support Forum NZ – Open DMZ or disable NAT on 546 v6[…]