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Posté le: Ven 22 Sep - 11:18 (2017) Sujet du message: Double NAT - is it really that big of a problem?
I understand that your networks shouldn't have more than one router doing NAT. All of the networks that I deal with are home based or very small businesses, and they'll only need one NAT router. BUT, I see it all the time. And I notice it not because I'm working on a networking issue, I just happen to notice while I'm called in for something unrelated.
Typically these days they've got a new cable modem / router with WiFi combo box connected to their old Linksys or Netgear router. In years past I'd see it on DSL connections.
I've asked in other venues about this and the best I've heard that double NAT might interfere with Skype connections. When I ask the customers who have this about any issues they've noticed I get blank looks.
Sometimes I'll remove the extra router and reprogram stuff the right way. Other times I'll leave it alone because I don't want to get a call back with the complaint that it was working fine until I messed with it. Plus I may not have the time or feel like the customer would be happy to pay for the extra time.
Anyway, what's your experience? How do you feel about double NAT?
I didn't find the right solution from the Internet.