Blocked for possible web abuse

Blocked for possible web abuse

The IP address you are coming from has requested an inordinately large number of pages in a short amount of time and has been temporarily blocked to conserve our resources. This often happens when people try to use web spidering programs to download large portions of the site. The block will be removed 24 hours after the latest period of high traffic. If you feel this IP ban was made in error, you can email [email protected].

Common Platform Enumeration (CPE)

Common Platform Enumeration (CPE) is a standardized way to name software applications, operating systems, and hardware platforms. Nmap includes CPE output for service and OS detection.

Structure of a CPE Name

A CPE name is a URL that encodes seven ordered fields:

cpe:/<part>:<vendor>:<product>:<version>:<update>:<edition>:<language>

Some of the fields may be left blank, and empty fields may be left off the end of the URL. The main division of CPE names is in the <part> field; this can take on only three values:

a for applications,
h for hardware platforms, or
o for operating systems.

By looking at the beginning of the URL you can easily see that cpe:/a:microsoft:sql_server:6.5 names an application, cpe:/h:asus:rt-n16 names a kind of hardware, and cpe:/o:freebsd:freebsd:3.5.1 names an operating system.

Nmap can output all three kinds of CPE names: OS detection can print h and o; and service detection can potentially output all three. The CPE names are mixed in with normal OS and service output, for example:

Example 13.13. Normal output with CPE highlighted
Running: Linux 2.6.X
OS CPE: cpe:/o:linux:linux_kernel:2.6.39
OS details: Linux 2.6.39
Network Distance: 10 hops
Service Info: OS: Linux; CPE: cpe:/o:linux:kernel

CPE names for applications (with part a) are not shown in normal output, but they are present in XML. CPE is represented as a cpe element that can be a child of service or osclass.