NAT IS A FIREWALL -- inside a router and when on you have a hardware firewall protecting you
Could be the NAT on your router or his/her router. try disabling or opening the NAT.
Depends on the type of router you have. Google "How to open NAT setting on a [Enter router type here]". You should find your answer there.
It depends on your router. You can find the answer on your router manufacturer's website.
You need to access the settings on your router.
A router passes traffic between networks to reach other computers or servers. A router also does NAT. Nat masquerades traffic behind the router with private IP(Non-internet route able) with the Public IP (Internet route able)
you don't
you need a router to fix it sorrymarian4
65536 virtual ports. Port number is a 16 bit number, so there are 2^16 (65536) ports for a NAT router.
debug ip nat
You have to change your NAT type through your router. Call your internet provider for instructions
A router can improve network security if it includes the use of NAT (network address translation) and/or a firewall.