read more , while its true that any internet connection to internet must have a Public IP BUT
the main difference is where is the Public IP located in the network hierarchy.
For normal maxis ftth setupusers are given private IP at their home and kept the public IP at their own server/equipment. In this scenario, for you to reach the Internet, you must pass through their server/equipment. Mind you, this particular public IP could be shared with other maxis ftth to reach the internet. Typically, this type of setup is
1 public IP(maxis data center) -- > many, maxis private IPs (users home router) --> many, your home private IPs(users ipad,phone, notebook, pc)
so, for data communication in the internet others will only be able to see your public IP, once data routed to the public IP, maxis equipment will then have to route it to the appropriate users (private IPs)
For maxis ftth setup with public IPusers are given a public IP (dynamic one of course) at their home directly. So in this case, between you and the internet is just the home router and this public IP is not shared by others at any point in time. Typically, this tpe of setup is
1 public IP(users home router) --> many, your home private IPs (users ipad, phone etc etc)
by using this setup, you have direct control over the the traffic if your router is capable of doing it and of course if you have admin access to it.
Note: In most cases, normal internet activities doesn't really which setup you have, what important is you have a connection and those routers will manage the route appropriately. However for example a cctv setup, you will require certain ports to be forwarded to the local private IP of the cctv equipments, therefor people suggest to get the public IP setup so that you have control over the router. In fact, cctv setups will even work using the normal setup IF Maxis helps you to port forward the necessary ports from the internet to your private IP (However, that might create management mess and most likely there are strict protocols to follow to allow the changes which means they will most likely wont do it for you)
BTW, public IP or private IP have no relation to your LINK speed. Download speed MIGHT be affected though depending the software you use. LINK speed and Download speed is not the same ya.
Good explanation for noob like me thanks a lot but ps3 user claimed they cant use private ip because cant do port forwarding and my torrent sometimes show port forward succsess sometime not and the d/l speed oso vary. Can help explaine lil bit?