Apple AirPort Networks Troubleshooting Guide download pdf (Page 37)

Reach Your

Network Remotely

When you share an Internet connection among one or more computers

on a local network using private addresses, you give up having an easy

way to connect from the outside world to a service, like a Web server or

fileserver, that’s located on one of those local computers.

Public IP addresses allow anyone on the Internet to connect directly to

a computer, barring any firewalls or other blocks in place, but private

IP addresses are specifically non-routable without a bit of extra work.

You can also access your base station remotely for file sharing

and configuration using an iCloud account and Back to My Mac.

Know Your Options

You can choose from several different methods of reaching your

network from the outside world:

• Basic port mapping and reserved addressing: While earlier

Apple

base stations offered port mapping, a way to connect a public

port on a routable address on the base station with a private port

on a locally connected computer, 802.11n and ac base stations also

let you assign addresses to local computers on a persistent basis—

these reserved addresses don’t change over time. When the base

station is restarted, or when the computer is restarted, the same

address is assigned to the computer once again.

This reservation system makes the mapping system work

consistently with less effort. I cover how to map ports for remote

access just ahead after this list.

• Punch through from certain programs: A protocol from

Apple

calle

d NAT-PMP (NAT plus Port Mapping Protocol) helps

129

Click here to buy the full 196-page “Take Control of Your Apple Wi-Fi Network” for only $20!

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 60 61

No comments

Apple AirPort Networks Troubleshooting Guide Page 37