Cherry-pick #7647 to 6.x: Add DHCPv4 protocol to Packetbeat (#8149)

* Add github.com/insomniacslk/dhcp to vendor

Added a build tag client.go to fix windows.

(cherry picked from commit 6565915)

* Add DHCPv4 protocol to Packetbeat

Packetbeat will capture and index individual DHCP packets for IPv4.

This adds a dashboards too.

Parsing is provided by github.com/insomniacslk/dhcp.

Co-authored-by: Brian Waskiewicz <brian_waskiewicz@hotmail.com>
Co-authored-by: Andrew Kroh <andrew.kroh@elastic.co>
(cherry picked from commit 6eb21a4)

CHANGELOG.asciidoc

@@ -110,6 +110,8 @@ https://github.com/elastic/beats/compare/v6.4.0...6.x[Check the HEAD diff]
 
 *Packetbeat*
 
+- Added DHCP protocol support. {pull}7647[7647]
+
 *Winlogbeat*
 
 

NOTICE.txt

@@ -1326,6 +1326,42 @@ License type (autodetected): Apache-2.0
 Apache License 2.0
 
 
+--------------------------------------------------------------------
+Dependency: github.com/insomniacslk/dhcp
+Revision: 633285ba52b2a67b98a3026eb87ee1a76ab60f3c
+License type (autodetected): BSD-3-Clause
+./vendor/github.com/insomniacslk/dhcp/LICENSE:
+--------------------------------------------------------------------
+BSD 3-Clause License
+
+Copyright (c) 2018, Andrea Barberio
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 --------------------------------------------------------------------
 Dependency: github.com/joeshaw/multierror
 Revision: 69b34d4ec901851247ae7e77d33909caf9df99ed

packetbeat/_meta/beat.reference.yml

@@ -124,6 +124,10 @@ packetbeat.protocols:
   # This option indicates which Operator/Operators will be ignored.
   #ignored_ops: ["SUPPORTED","OPTIONS"]
 
+- type: dhcpv4
+  # Configure the DHCP for IPv4 ports.
+  ports: [67, 68]
+
 - type: dns
   # Enable DNS monitoring. Default: true
   #enabled: true

packetbeat/_meta/beat.yml

@@ -40,6 +40,10 @@ packetbeat.protocols:
   #Cassandra port for traffic monitoring.
   ports: [9042]
 
+- type: dhcpv4
+  # Configure the DHCP for IPv4 ports.
+  ports: [67, 68]
+
 - type: dns
   # Configure the ports where to listen for DNS traffic. You can disable
   # the DNS protocol by commenting out the list of ports.