mirror of
https://github.com/inspec/inspec
synced 2024-12-18 09:03:12 +00:00
84a59cab50
Fixes https://github.com/chef/inspec/issues/438 Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
150 lines
3.4 KiB
Text
150 lines
3.4 KiB
Text
---
|
|
title: About the port Resource
|
|
---
|
|
|
|
# port
|
|
|
|
Use the `port` InSpec audit resource to test basic port properties, such as port, process, if it's listening.
|
|
|
|
## Syntax
|
|
|
|
A `port` resource block declares a port, and then depending on what needs to be tested, a process, protocol, process identifier, and its state (is it listening?):
|
|
|
|
describe port(514) do
|
|
it { should be_listening }
|
|
its('processes') {should include 'syslog'}
|
|
end
|
|
|
|
where the `processes` returns the processes listening on port 514.
|
|
|
|
A filter may specify an attribute:
|
|
|
|
describe port.where { protocol =~ /tcp/ && port > 22 && port < 80 } do
|
|
it { should_not be_listening }
|
|
end
|
|
|
|
where
|
|
|
|
* `.where{}` specifies a block in which one (or more) attributes---`port`, `address`, `protocol`, `process`, `pid`, or `listening?`----scope the test to ports that match those attributes
|
|
|
|
For example, to test if the SSH daemon is available on a Linux machine via the default port (22):
|
|
|
|
describe port(22) do
|
|
its('processes') { should include 'sshd' }
|
|
its('protocols') { should include 'tcp' }
|
|
its('addresses') { should include '0.0.0.0' }
|
|
end
|
|
|
|
## Matchers
|
|
|
|
This InSpec audit resource has the following matchers:
|
|
|
|
### address
|
|
|
|
The `addresses` matcher tests if the specified address is associated with a port:
|
|
|
|
its('addresses') { should include '0.0.0.0' }
|
|
|
|
### be
|
|
|
|
<%= partial "/shared/matcher_be" %>
|
|
|
|
### be_listening
|
|
|
|
The `be_listening` matcher tests if the port is listening for traffic:
|
|
|
|
it { should be_listening }
|
|
|
|
### cmp
|
|
|
|
<%= partial "/shared/matcher_cmp" %>
|
|
|
|
### eq
|
|
|
|
<%= partial "/shared/matcher_eq" %>
|
|
|
|
### include
|
|
|
|
<%= partial "/shared/matcher_include" %>
|
|
|
|
### match
|
|
|
|
<%= partial "/shared/matcher_match" %>
|
|
|
|
### pids
|
|
|
|
The `pids` matcher tests the process identifiers (PIDs):
|
|
|
|
its('pids') { should cmp 27808 }
|
|
|
|
### processes
|
|
|
|
The `processes` matcher tests if the named process is running on the system:
|
|
|
|
its('processes') { should cmp 'syslog' }
|
|
|
|
### protocols
|
|
|
|
The `protocols` matcher tests the Internet protocol: ICMP (`'icmp'`), TCP (`'tcp'` or `'tcp6'`), or UDP (`'udp'` or `'udp6'`):
|
|
|
|
its('protocols') { should include 'tcp' }
|
|
|
|
or for the IPv6 protocol:
|
|
|
|
its('protocols') { should include 'tcp6' }
|
|
|
|
## Examples
|
|
|
|
The following examples show how to use this InSpec audit resource.
|
|
|
|
### Test port 80, listening with the TCP protocol
|
|
|
|
describe port(80) do
|
|
it { should be_listening }
|
|
its('protocols') { should cmp 'tcp' }
|
|
end
|
|
|
|
### Test port 80, on a specific address
|
|
|
|
A specific port address may be checked using either of the following examples:
|
|
|
|
describe port(80) do
|
|
it { should be_listening }
|
|
its('addresses') {should include '0.0.0.0'}
|
|
end
|
|
|
|
or:
|
|
|
|
describe port('0.0.0.0', 80) do
|
|
it { should be_listening }
|
|
end
|
|
|
|
### Test port 80, listening with TCP version IPv6 protocol
|
|
|
|
describe port(80) do
|
|
it { should be_listening }
|
|
its('protocols') { should cmp 'tcp6' }
|
|
end
|
|
|
|
### Test that only secure ports accept requests
|
|
|
|
describe port(80) do
|
|
it { should_not be_listening }
|
|
end
|
|
|
|
describe port(443) do
|
|
it { should be_listening }
|
|
its('protocols') { should cmp 'tcp' }
|
|
end
|
|
|
|
### Verify port 65432 is not listening
|
|
|
|
describe port(22) do
|
|
it { should be_listening }
|
|
its('protocols') { should include('tcp') }
|
|
its('protocols') { should_not include('udp') }
|
|
end
|
|
|
|
describe port(65432) do
|
|
it { should_not be_listening }
|
|
end
|