It is important to realise that the IP addresses of devices on your local network are not directly accessible from the internet. These addresses are private, and are completely invisible from outside your local network.

Your ISP (Internet Service Provider) provides you with a single public IP address. This address is part of the internet.

Your local network is a LAN (Local Area Network), while the internet is a WAN (Wide Area Network).

Your router, as the only device connected to both the LAN and the WAN, acts as a gateway between these two networks. When a device on the LAN needs to connect to a device on the WAN, it must go through the router. Conversely, when a connection arrives from the WAN, the router is responsible for forwarding this to the appropriate computer on the LAN - this is called port forwarding.

 

 

Your ISP will provide you with either a static or a dynamic public IP address:


Static IP address

This means that your public IP address on the internet never changes. This is ideal, as it means you can always access your system using the same address.


Dynamic IP address

Most ISPs give you a dynamic IP address. This means that your IP address can change from time to time. In this case, you will need to use a Dynamic DNS service to provide your system with a static host name that will always point to your public IP address, even when it changes. SecuritySpy has a built-in Dynamic DNS service, described in Setting up your Mac.


Overview

Choosing a system
    Types of camera
    Progressive scan
    System demands

Example systems
    Budget
    Home or small business
    Professional

Network cameras
    Choosing network cameras
    Network hardware
    Ethernet cabling
    Local networks
    Setting up network cameras
    Setting up wireless cameras
    Network camera notes

Analogue cameras
    Analogue cabling
    Quad processors
    Choosing input hardware
    Network video servers
    PCI input cards
    Firewire inputs
    USB inputs

FireWire and USB webcams

Audio input
    Microphones

Remote monitoring
    Internet connection
    Seting up your Mac
    Setting up your router

Triggering actions

Getting help

Remote monitoring – Internet connection
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