inetd_conf

Use the inetd_conf InSpec audit resource to test if a service is listed in the inetd.conf file on Linux and Unix platforms. inetd—the Internet service daemon—listens on dedicated ports, and then loads the appropriate program based on a request. The inetd.conf file is typically located at /etc/inetd.conf and contains a list of Internet services associated to the ports on which that service will listen. Only enabled services may handle a request; only services that are required by the system should be enabled.`


Syntax

An inetd_conf resource block declares the list of services that are enabled in the inetd.conf file:

describe inetd_conf('path') do
  its('service_name') { should eq 'value' }
end

where

  • 'service_name' is a service listed in the inetd.conf file
  • ('path') is the non-default path to the inetd.conf file
  • should eq 'value' is the value that is expected


Properties

This resource supports any of the properties listed as services in the inetd.conf file. You may want to ensure that specific services do not listen via inetd.conf.


Examples

The following examples show how to use this InSpec audit resource.

Basic tests for inetd_conf services:

its('shell') { should eq nil }

or:

its('netstat') { should eq nil }

or:

its('systat') { should eq nil }

For example:

describe inetd_conf do
  its('shell') { should eq nil }
  its('login') { should eq nil }
  its('exec') { should eq nil }
end

Verify that FTP is disabled

The contents if the inetd.conf file contain the following:

#ftp      stream   tcp   nowait   root   /usr/sbin/tcpd   in.ftpd -l -a
#telnet   stream   tcp   nowait   root   /usr/sbin/tcpd   in.telnetd

and the following test is defined:

describe inetd_conf do
  its('ftp') { should eq nil }
  its('telnet') { should eq nil }
end

Because both the ftp and telnet Internet services are commented out (#), both services are disabled. Consequently, both tests will return true. However, if the inetd.conf file is set as follows:

ftp       stream   tcp   nowait   root   /usr/sbin/tcpd   in.ftpd -l -a
#telnet   stream   tcp   nowait   root   /usr/sbin/tcpd   in.telnetd

then the same test will return false for ftp and the entire test will fail.

Test if telnet is installed

describe package('telnetd') do
  it { should_not be_installed }
end

describe inetd_conf do
  its('telnet') { should eq nil }
end


Matchers

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