Axis Communications AXIS 2420 user manual Appendix G High-Speed Services, Available IP Addresses

AXIS 2420 User’s Manual High-Speed Services 69

Appendix G - High-Speed Services

The AXIS 2420 is designed with high-speed Internet services foremost in mind, and you will experience the full performance of your AXIS 2420 if you are fortunate enough to have xDSL or a cable modem connection. However, as most high-speed Internet services only provide you with one external IP address, there are some practical issues that should be considered when developing your application. This section discusses some of these issues.

Available IP Addresses

Ideally your ISP (Internet Service Provider) should supply you with several external, static IP addresses - in which case you can assign any one of these to your AXIS 2420 to make it fully accessible over the internet. If your ISP supplies you with only one IP number - which is usually the case - then this IP number is normally assigned to your PC. If your ISP is unable to provide you with an additional IP number, you still have a number of other options that you may like to consider, including:

Windows 2000 NAT-feature (Network Address Translation):

Utilize the NAT feature in Windows 2000 to allow multiple Ethernet cards in your PC. You then use one port for the Internet and the other for your internal network. Using this solution, you can let your AXIS 2420 upload image streams to your ISP’s external Web server.

Routers and Firewalls

Another ideal solution is to use one of several small routers/firewalls that are currently available on the market. These provide the necessary NAT functionality and allow complete independence for your PC, which can be switched off or rebooted without affecting the image transmission from your AXIS 2420.

WinGate Server Software:

Running on a single Windows computer, this software allows multiple users simultaneous access to the Internet through a single connection; be it modem, ISDN or high speed line, such as xDSL or cable modem connection. You can thus effectively share a single Internet connection with almost any type of client computer running TCP/IP.

For more advanced users, the WinGate 3.0 Standard and Pro versions allow the administrator to change the IP bindings so that external requests may be routed specifically to your AXIS 2420 - running behind the WinGate software.