mirror of
https://github.com/vyos/vyos-documentation.git
synced 2025-10-26 08:41:46 +01:00
215 lines
6.7 KiB
ReStructuredText
215 lines
6.7 KiB
ReStructuredText
.. _quick-start:
|
|
|
|
###########
|
|
Quick Start
|
|
###########
|
|
|
|
Below is a very basic configuration example that will provide a NAT gateway
|
|
for a device with two interfaces.
|
|
|
|
Enter configuration mode:
|
|
|
|
.. code-block:: sh
|
|
|
|
vyos@vyos$ configure
|
|
vyos@vyos#
|
|
|
|
Configure network interfaces:
|
|
|
|
.. code-block:: sh
|
|
|
|
set interfaces ethernet eth0 address dhcp
|
|
set interfaces ethernet eth0 description 'OUTSIDE'
|
|
set interfaces ethernet eth1 address '192.168.0.1/24'
|
|
set interfaces ethernet eth1 description 'INSIDE'
|
|
|
|
Enable SSH for remote management:
|
|
|
|
.. code-block:: sh
|
|
|
|
set service ssh port '22'
|
|
|
|
Configure DHCP Server and DNS
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
.. code-block:: sh
|
|
|
|
set service dhcp-server shared-network-name LAN subnet 192.168.0.0/24 default-router '192.168.0.1'
|
|
set service dhcp-server shared-network-name LAN subnet 192.168.0.0/24 dns-server '192.168.0.1'
|
|
set service dhcp-server shared-network-name LAN subnet 192.168.0.0/24 domain-name 'internal-network'
|
|
set service dhcp-server shared-network-name LAN subnet 192.168.0.0/24 lease '86400'
|
|
set service dhcp-server shared-network-name LAN subnet 192.168.0.0/24 range 0 start 192.168.0.9
|
|
set service dhcp-server shared-network-name LAN subnet 192.168.0.0/24 range 0 stop '192.168.0.254'
|
|
|
|
And a DNS forwarder:
|
|
|
|
.. code-block:: sh
|
|
|
|
set service dns forwarding cache-size '0'
|
|
set service dns forwarding listen-address '192.168.0.1'
|
|
set service dns forwarding name-server '8.8.8.8'
|
|
set service dns forwarding name-server '8.8.4.4'
|
|
|
|
NAT and Firewall
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
Configure Source NAT for our "Inside" network.
|
|
|
|
.. code-block:: sh
|
|
|
|
set nat source rule 100 outbound-interface 'eth0'
|
|
set nat source rule 100 source address '192.168.0.0/24'
|
|
set nat source rule 100 translation address masquerade
|
|
|
|
Add a set of firewall policies for our "Outside" interface.
|
|
|
|
This configuration creates a proper stateful firewall that blocks all traffic:
|
|
|
|
.. code-block:: sh
|
|
|
|
set firewall name OUTSIDE-IN default-action 'drop'
|
|
set firewall name OUTSIDE-IN rule 10 action 'accept'
|
|
set firewall name OUTSIDE-IN rule 10 state established 'enable'
|
|
set firewall name OUTSIDE-IN rule 10 state related 'enable'
|
|
set firewall name OUTSIDE-LOCAL default-action 'drop'
|
|
set firewall name OUTSIDE-LOCAL rule 10 action 'accept'
|
|
set firewall name OUTSIDE-LOCAL rule 10 state established 'enable'
|
|
set firewall name OUTSIDE-LOCAL rule 10 state related 'enable'
|
|
set firewall name OUTSIDE-LOCAL rule 20 action 'accept'
|
|
set firewall name OUTSIDE-LOCAL rule 20 icmp type-name 'echo-request'
|
|
set firewall name OUTSIDE-LOCAL rule 20 protocol 'icmp'
|
|
set firewall name OUTSIDE-LOCAL rule 20 state new 'enable'
|
|
|
|
If you wanted to enable SSH access to your firewall from the Internet, you
|
|
could create some additional rules to allow the traffic.
|
|
|
|
These rules allow SSH traffic and rate limit it to 4 requests per minute. This
|
|
blocks brute-forcing attempts:
|
|
|
|
.. code-block:: sh
|
|
|
|
set firewall name OUTSIDE-LOCAL rule 30 action 'drop'
|
|
set firewall name OUTSIDE-LOCAL rule 30 destination port '22'
|
|
set firewall name OUTSIDE-LOCAL rule 30 protocol 'tcp'
|
|
set firewall name OUTSIDE-LOCAL rule 30 recent count '4'
|
|
set firewall name OUTSIDE-LOCAL rule 30 recent time '60'
|
|
set firewall name OUTSIDE-LOCAL rule 30 state new 'enable'
|
|
set firewall name OUTSIDE-LOCAL rule 31 action 'accept'
|
|
set firewall name OUTSIDE-LOCAL rule 31 destination port '22'
|
|
set firewall name OUTSIDE-LOCAL rule 31 protocol 'tcp'
|
|
set firewall name OUTSIDE-LOCAL rule 31 state new 'enable'
|
|
|
|
Apply the firewall policies:
|
|
|
|
.. code-block:: sh
|
|
|
|
set interfaces ethernet eth0 firewall in name 'OUTSIDE-IN'
|
|
set interfaces ethernet eth0 firewall local name 'OUTSIDE-LOCAL'
|
|
|
|
Commit changes, save the configuration, and exit configuration mode:
|
|
|
|
.. code-block:: sh
|
|
|
|
vyos@vyos# commit
|
|
vyos@vyos# save
|
|
Saving configuration to '/config/config.boot'...
|
|
Done
|
|
vyos@vyos# exit
|
|
vyos@vyos$
|
|
|
|
Basic QoS
|
|
^^^^^^^^^
|
|
|
|
The traffic policy subsystem provides an interface to Linux traffic control
|
|
(tc_).
|
|
|
|
One common use of traffic policy is to limit bandwidth for an interface. In
|
|
the example below we limit bandwidth for our LAN connection to 200 Mbit
|
|
download and out WAN connection to 50 Mbit upload:
|
|
|
|
.. code-block:: sh
|
|
|
|
set traffic-policy shaper WAN-OUT bandwidth '50Mbit'
|
|
set traffic-policy shaper WAN-OUT default bandwidth '50%'
|
|
set traffic-policy shaper WAN-OUT default ceiling '100%'
|
|
set traffic-policy shaper WAN-OUT default queue-type 'fair-queue'
|
|
set traffic-policy shaper LAN-OUT bandwidth '200Mbit'
|
|
set traffic-policy shaper LAN-OUT default bandwidth '50%'
|
|
set traffic-policy shaper LAN-OUT default ceiling '100%'
|
|
set traffic-policy shaper LAN-OUT default queue-type 'fair-queue'
|
|
|
|
Resulting in the following configuration:
|
|
|
|
.. code-block:: sh
|
|
|
|
traffic-policy {
|
|
shaper WAN-OUT {
|
|
bandwidth 50Mbit
|
|
default {
|
|
bandwidth 50%
|
|
ceiling 100%
|
|
queue-type fair-queue
|
|
}
|
|
}
|
|
shaper LAN-OUT {
|
|
bandwidth 200Mbit
|
|
default {
|
|
bandwidth 50%
|
|
ceiling 100%
|
|
queue-type fair-queue
|
|
}
|
|
}
|
|
}
|
|
|
|
Once defined, a traffic policy can be applied to each interface using the
|
|
interface-level traffic-policy directive:
|
|
|
|
.. code-block:: sh
|
|
|
|
set interfaces ethernet eth0 traffic-policy out 'WAN-OUT'
|
|
set interfaces ethernet eth1 traffic-policy out 'LAN-OUT'
|
|
|
|
.. note:: A traffic policy can also be defined to match specific traffic
|
|
flows using class statements.
|
|
|
|
VyOS 1.2 (Crux) also supports HFSC (:code:`set traffic-policy shaper-hfsc`)
|
|
|
|
See further information in the :ref:`qos` chapter.
|
|
|
|
Security Hardening
|
|
^^^^^^^^^^^^^^^^^^
|
|
|
|
Especially if you are allowing SSH access from the Internet, there are a few
|
|
additional configuration steps that should be taken.
|
|
|
|
Create a user to replace the default `vyos` user:
|
|
|
|
.. code-block:: sh
|
|
|
|
set system login user myvyosuser level admin
|
|
set system login user myvyosuser authentication plaintext-password mysecurepassword
|
|
|
|
Set up SSH key based authentication. For example, on Linux you'd want to run
|
|
``ssh-keygen -t rsa``. Then the contents of ``id_rsa.pub`` would be used below:
|
|
|
|
.. code-block:: sh
|
|
|
|
set system login user myvyosuser authentication public-keys myusername@mydesktop type ssh-rsa
|
|
set system login user myvyosuser authentication public-keys myusername@mydesktop key contents_of_id_rsa.pub
|
|
|
|
Or you can use the ``loadkey`` command. Commit and save.
|
|
|
|
Finally, try and SSH into the VyOS install as your new user. Once you have
|
|
confirmed that your new user can access your server, without a password, delete
|
|
the original ``vyos`` user and probably disable password authentication for
|
|
SSH:
|
|
|
|
.. code-block:: sh
|
|
|
|
delete system login user vyos
|
|
set service ssh disable-password-authentication
|
|
|
|
Commit and save.
|
|
|
|
.. _tc: http://en.wikipedia.org/wiki/Tc_(Linux)
|