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Expand CIDR documentation to cover IPv6 as well.

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dmiller 2017-08-07 15:51:28 +00:00
parent 93cb0fd4b5
commit 9778fd0021
1 changed files with 4 additions and 3 deletions
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7
docs/refguide.xml
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@ -177,7 +177,7 @@ simplest case is to specify a target IP address or hostname for scanning.</para>
<para>Sometimes you wish to scan a whole network of adjacent hosts. For
this, Nmap supports CIDR-style<indexterm><primary>CIDR (Classless
Inter-Domain Routing)</primary></indexterm> addressing. You can append
<literal>/<replaceable>numbits</replaceable></literal> to an IPv4
<literal>/<replaceable>numbits</replaceable></literal> to an IP
address or hostname and Nmap will scan every IP address for which the
first <replaceable>numbits</replaceable> are the same as for the
reference IP or hostname given. For example,
@ -194,8 +194,9 @@ is at the IP address 64.13.134.52, the specification
<literal>scanme.nmap.org/16</literal> would scan the 65,536 IP addresses
between 64.13.0.0 and 64.13.255.255. The smallest allowed value is
<literal>/0</literal>, which targets the whole Internet. The largest
value is <literal>/32</literal>, which scans just the named host or IP
address because all address bits are fixed.</para>
value for IPv4 is <literal>/32</literal>, which scans just the named host or IP
address because all address bits are fixed. The largest value for IPv6 is
<literal>/128</literal>, which does the same thing.</para>
<indexterm><primary>address ranges</primary></indexterm>
<para>CIDR notation is short but not always flexible enough. For example, you