January 2004
Intermediate to advanced
656 pages
15h 41m
English
book
Essential Check Point™ FireWall-1® NG: An Installation, Configuration, and Troubleshooting Guide
by Dameon D. Welch-Abernathy
Content preview from Essential Check Point™ FireWall-1® NG: An Installation, Configuration, and Troubleshooting Guide
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RFC1918 and Link-Local Addresses
RFC1918 (which was originally described in RFC1597) sets aside specific ranges of IP addresses that cannot be used on the Internet. Instead, these addresses are to be used internally within an organization or network. If hosts with RFC1918 addresses want to communicate with a network like the Internet, they must go through some form of NAT because no host on the Internet will know how to route RFC1918 addresses. The addresses assigned by RFC1918 are as follows:
10.0.0.0/8 (netmask 255.0.0.0)
172.16.0.0/12 (netmask 255.240.0.0, which covers 172.16.0.0–172.31.255.255)
192.168.0.0/16 (netmask 255.255.0.0)
NOTE!
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