B&B Electronics GW-7472 - Manual - Manual (Page 59)

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Appendix C: FAQ
1. Why does the GW-7472 series module fail on a (public) Internet
connection?
The default IP address of the GW-7472 is 192.168.255.1, which can be only used on a private
Internet connection. A private network packet will not be routed via a (public) Internet
connection, which is the reason why the GW-7472 failed on the Internet.
The IANA has reserved three address spaces for private internets (RFC1918).
10.0.0.0 - 10.255.255.255 (10/8 prefix)
172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
The GW-7472 can be operated on the Internet by using a legal public IP address. This address
can be obtained from your ISP or network administrator.