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In this case, you will need an NAT router to connect to the high-speed modem. Please refer to
the user manual of your NAT router to translate DVR1 (192.168.123.51 port 80) to a port of
211.23.87.163, for example, port 8001. Similarly, translate DVR2 (192.168.123.52 port 80) to
another port of 211.23.87.163, say, port 8002. You also need to set the user name and password
on this router in order to successfully connect to ISP. Follow the instructions in section 3-6-7 to
set the IP address of DVR1 as 192.168.123.51.
Users from Internet can now use
http://211.23.87.163:8001
to connect to DVR1 and use
http://211.23.87.163:8002
to connect to DVR2.
