- Axis User's Manual Network Camera 2120

AXIS 2120 User’s Manual High-Speed Services

Appendix E - High-Speed Services

You will experience the full performance of the AXIS 2120 if you have access to

high-speed Internet services such as, xDSL or a cable-modem connection. However, as

most high-speed Internet services only provide you with one external IP address, there are

several practical issues that should be considered when developing your application.

Available IP Addresses

Ideally, your ISP (Internet Service Provider) will provide you with several external static IP

addresses - in which case you can assign any one of these to your AXIS 2120 to make it

fully accessible over the internet. However, if your service provider supplies you with only

one IP number - which is often the case - this IP number is normally assigned to your PC -

leaving no connection available for your AXIS 2120. If your ISP is unable to provide you

with an additional IP number, there are a number of other options that you may like to

consider; including:

NAT Box

Short for Network Address Translation, NAT is an Internet standard that allows a

local-area network (LAN) to use one set of IP addresses for internal traffic and a second set

of addresses for external traffic. A NAT box located where your LAN meets the Internet

will handle all of the necessary IP address translations and provides:

• Internal IP addresses that are unique to your network - with no possibility of conflict with IP

addresses used by other companies and organizations.

• The possibility of combining multiple ISDN connections into a single Internet connection.

• An effective firewall for hiding internal IP addresses

NAT Feature in Windows 2000

Utilize the NAT feature in Windows 2000 to allow multiple Ethernet cards in your PC, and

you can then use one port for the Internet and the other for your internal network. With

this solution, you can let your AXIS 2120 upload image streams to an external Web server

that is maintained and located with your ISP.

Note: For further details on Network Address Translation, see also RFC 1631.