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authorrebortg <github@ghlr.de>2020-11-29 21:32:45 +0100
committerrebortg <github@ghlr.de>2020-11-29 21:32:45 +0100
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-.. include:: ../_include/need_improvement.txt
-
-.. _routing-pbr:
-
-###
-PBR
-###
-
-:abbr:`PBR (Policy-Based Routing)` allowing traffic to be assigned to
-different routing tables. Traffic can be matched using standard 5-tuple
-matching (source address, destination address, protocol, source port,
-destination port).
-
-Transparent Proxy
-=================
-
-The following example will show how VyOS can be used to redirect web
-traffic to an external transparent proxy:
-
-.. code-block:: none
-
- set policy route FILTER-WEB rule 1000 destination port 80
- set policy route FILTER-WEB rule 1000 protocol tcp
- set policy route FILTER-WEB rule 1000 set table 100
-
-This creates a route policy called FILTER-WEB with one rule to set the
-routing table for matching traffic (TCP port 80) to table ID 100
-instead of the default routing table.
-
-To create routing table 100 and add a new default gateway to be used by
-traffic matching our route policy:
-
-.. code-block:: none
-
- set protocols static table 100 route 0.0.0.0/0 next-hop 10.255.0.2
-
-This can be confirmed using the ``show ip route table 100`` operational
-command.
-
-Finally, to apply the policy route to ingress traffic on our LAN
-interface, we use:
-
-.. code-block:: none
-
- set interfaces ethernet eth1 policy route FILTER-WEB
-
-
-Multiple Uplinks
-================
-
-VyOS Policy-Based Routing (PBR) works by matching source IP address
-ranges and forwarding the traffic using different routing tables.
-
-Routing tables that will be used in this example are:
-
-* ``table 10`` Routing table used for VLAN 10 (192.168.188.0/24)
-* ``table 11`` Routing table used for VLAN 11 (192.168.189.0/24)
-* ``main`` Routing table used by VyOS and other interfaces not
- participating in PBR
-
-.. figure:: ../_static/images/pbr_example_1.png
- :scale: 80 %
- :alt: PBR multiple uplinks
-
- Policy-Based Routing with multiple ISP uplinks
- (source ./draw.io/pbr_example_1.drawio)
-
-Add default routes for routing ``table 10`` and ``table 11``
-
-.. code-block:: none
-
- set protocols static table 10 route 0.0.0.0/0 next-hop 192.0.1.1
- set protocols static table 11 route 0.0.0.0/0 next-hop 192.0.2.2
-
-Add policy route matching VLAN source addresses
-
-.. code-block:: none
-
- set policy route PBR rule 20 set table '10'
- set policy route PBR rule 20 description 'Route VLAN10 traffic to table 10'
- set policy route PBR rule 20 source address '192.168.188.0/24'
-
- set policy route PBR rule 30 set table '11'
- set policy route PBR rule 30 description 'Route VLAN11 traffic to table 11'
- set policy route PBR rule 30 source address '192.168.189.0/24'
-
-Apply routing policy to **inbound** direction of out VLAN interfaces
-
-.. code-block:: none
-
- set interfaces ethernet eth0 vif 10 policy route 'PBR'
- set interfaces ethernet eth0 vif 11 policy route 'PBR'
-
-
-**OPTIONAL:** Exclude Inter-VLAN traffic (between VLAN10 and VLAN11)
-from PBR
-
-.. code-block:: none
-
- set policy route PBR rule 10 description 'VLAN10 <-> VLAN11 shortcut'
- set policy route PBR rule 10 destination address '192.168.188.0/24'
- set policy route PBR rule 10 destination address '192.168.189.0/24'
- set policy route PBR rule 10 set table 'main'
-
-These commands allow the VLAN10 and VLAN20 hosts to communicate with
-each other using the main routing table.
-
-Local route
-===========
-
-The following example allows VyOS to use :abbr:`PBR (Policy-Based Routing)` for traffic, which originated from the router itself.
-That solution for multiple ISP's and VyOS router will respond from the same interface that the packet was received.
-Also, it used, if we want that one VPN tunnel to be through one provider, and the second through another.
-
-* ``192.168.1.254`` IP addreess on VyOS eth1 from ISP1
-* ``192.168.2.254`` IP addreess on VyOS eth2 from ISP2
-* ``table 10`` Routing table used for ISP1
-* ``table 11`` Routing table used for ISP2
-
-
-.. code-block:: none
-
- set policy local-route rule 101 set table '10'
- set policy local-route rule 101 source '192.0.1.254'
- set policy local-route rule 102 set table '11'
- set policy local-route rule 102 source '192.0.2.254'
- set protocols static table 10 route '0.0.0.0/0' next-hop '192.0.1.1'
- set protocols static table 11 route '0.0.0.0/0' next-hop '192.0.2.2'
-
-Add multiple source IP in one rule with same priority
-
-.. code-block:: none
-
- set policy local-route rule 101 set table '10'
- set policy local-route rule 101 source '192.0.1.254'
- set policy local-route rule 101 source '192.0.1.253'
- set policy local-route rule 101 source '203.0.113.0/24'