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authorrebortg <github@ghlr.de>2020-11-30 20:53:36 +0100
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-.. _pppoe-server:
-
-############
-PPPoE Server
-############
-
-VyOS utilizes `accel-ppp`_ to provide PPPoE server functionality. It can
-be used with local authentication or a connected RADIUS server.
-
-.. note:: Please be aware, due to an upstream bug, config
- changes/commits will restart the ppp daemon and will reset existing
- PPPoE connections from connected users, in order to become effective.
-
-Configuration
-=============
-
-
-First steps
------------
-
-
-.. cfgcmd:: set service pppoe-server access-concentrator <name>
-
- Use this command to set a name for this PPPoE-server access
- concentrator.
-
-.. cfgcmd:: set service pppoe-server authentication mode <local | radius>
-
- Use this command to define whether your PPPoE clients will locally
- authenticate in your VyOS system or in RADIUS server.
-
-.. cfgcmd:: set service pppoe-server authentication local-users username <name> password <password>
-
- Use this command to configure the username and the password of a
- locally configured user.
-
-.. cfgcmd:: set service pppoe-server interface <interface>
-
- Use this command to define the interface the PPPoE server will use to
- listen for PPPoE clients.
-
-.. cfgcmd:: set service pppoe-server local-ip <address>
-
- Use this command to configure the local gateway IP address.
-
-.. cfgcmd:: set service pppoe-server name-server <address>
-
- Use this command to set the IPv4 or IPv6 address of every Doman Name
- Server you want to configure. They will be propagated to PPPoE
- clients.
-
-
-Client Address Pools
---------------------
-
-To automatically assign the client an IP address as tunnel endpoint, a
-client IP pool is needed. The source can be either RADIUS or a local
-subnet or IP range definition.
-
-Once the local tunnel endpoint ``set service pppoe-server local-ip
-'10.1.1.2'`` has been defined, the client IP pool can be either defined
-as a range or as subnet using CIDR notation. If the CIDR notation is
-used, multiple subnets can be setup which are used sequentially.
-
-
-**Client IP address via IP range definition**
-
-.. cfgcmd:: set service pppoe-server client-ip-pool start <address>
-
- Use this command to define the first IP address of a pool of
- addresses to be given to PPPoE clients. It must be within a /24
- subnet.
-
-.. cfgcmd:: set service pppoe-server client-ip-pool stop <address>
-
- Use this command to define the last IP address of a pool of
- addresses to be given to PPPoE clients. It must be within a /24
- subnet.
-
-.. code-block:: none
-
- set service pppoe-server client-ip-pool start '10.1.1.100'
- set service pppoe-server client-ip-pool stop '10.1.1.111'
-
-
-**Client IP subnets via CIDR notation**
-
-.. cfgcmd:: set service pppoe-server client-ip-pool subnet <address>
-
- Use this command for every pool of client IP addresses you want to
- define. The addresses of this pool will be given to PPPoE clients.
- You must use CIDR notation and it must be within a /24 subnet.
-
-.. code-block:: none
-
- set service pppoe-server client-ip-pool subnet '10.1.1.0/24'
- set service pppoe-server client-ip-pool subnet '10.1.2.0/24'
- set service pppoe-server client-ip-pool subnet '10.1.3.0/24'
-
-
-**RADIUS based IP pools (Framed-IP-Address)**
-
-To use a radius server, you need to switch to authentication mode RADIUS
-and then configure it.
-
-.. cfgcmd:: set service pppoe-server authentication radius server <address> key <secret>
-
- Use this command to configure the IP address and the shared secret
- key of your RADIUS server. You can have multiple RADIUS servers
- configured if you wish to achieve redundancy.
-
-
-.. code-block:: none
-
- set service pppoe-server access-concentrator 'ACN'
- set service pppoe-server authentication mode 'radius'
- set service pppoe-server authentication radius server 10.1.100.1 key 'secret'
- set service pppoe-server interface 'eth1'
- set service pppoe-server local-ip '10.1.1.2'
-
-RADIUS provides the IP addresses in the example above via
-Framed-IP-Address.
-
-**RADIUS sessions management DM/CoA**
-
-.. cfgcmd:: set service pppoe-server authentication radius dynamic-author <key | port | server>
-
- Use this command to configure Dynamic Authorization Extensions to
- RADIUS so that you can remotely disconnect sessions and change some
- authentication parameters.
-
-.. code-block:: none
-
- set service pppoe-server authentication radius dynamic-author key 'secret123'
- set service pppoe-server authentication radius dynamic-author port '3799'
- set service pppoe-server authentication radius dynamic-author server '10.1.1.2'
-
-
-Example, from radius-server send command for disconnect client with
-username test
-
-.. code-block:: none
-
- root@radius-server:~# echo "User-Name=test" | radclient -x 10.1.1.2:3799 disconnect secret123
-
-You can also use another attributes for identify client for disconnect,
-like Framed-IP-Address, Acct-Session-Id, etc. Result commands appears in
-log.
-
-.. code-block:: none
-
- show log | match Disconnect*
-
-Example for changing rate-limit via RADIUS CoA.
-
-.. code-block:: none
-
- echo "User-Name=test,Filter-Id=5000/4000" | radclient 10.1.1.2:3799 coa secret123
-
-Filter-Id=5000/4000 (means 5000Kbit down-stream rate and 4000Kbit
-up-stream rate) If attribute Filter-Id redefined, replace it in RADIUS
-CoA request.
-
-Automatic VLAN Creation
------------------------
-
-.. cfgcmd:: set service pppoe-server interface <interface> <vlan-id | vlan range> <text>
-
- VLAN's can be created by accel-ppp on the fly via the use of a Kernel
- module named `vlan_mon`, which is monitoring incoming vlans and
- creates the necessary VLAN if required and allowed. VyOS supports the
- use of either VLAN ID's or entire ranges, both values can be defined
- at the same time for an interface. When configured, the PPPoE will
- create the necessary VLANs when required. Once the user session has
- been cancelled and the VLAN is not needed anymore, VyOS will remove
- it again.
-
-.. code-block:: none
-
- set service pppoe-server interface eth3 vlan-id 100
- set service pppoe-server interface eth3 vlan-id 200
- set service pppoe-server interface eth3 vlan-range 500-1000
- set service pppoe-server interface eth3 vlan-range 2000-3000
-
-
-
-Bandwidth Shaping
------------------
-
-Bandwidth rate limits can be set for local users or RADIUS based
-attributes.
-
-For Local Users
-^^^^^^^^^^^^^^^
-
-.. cfgcmd:: set service pppoe-server authentication local-users username <name> rate-limit <download | upload>
-
- Use this command to configure a data-rate limit to PPPOoE clients for
- traffic download or upload. The rate-limit is set in kbit/sec.
-
-.. code-block:: none
-
- set service pppoe-server access-concentrator 'ACN'
- set service pppoe-server authentication local-users username foo password 'bar'
- set service pppoe-server authentication local-users username foo rate-limit download '20480'
- set service pppoe-server authentication local-users username foo rate-limit upload '10240'
- set service pppoe-server authentication mode 'local'
- set service pppoe-server client-ip-pool start '10.1.1.100'
- set service pppoe-server client-ip-pool stop '10.1.1.111'
- set service pppoe-server name-server '10.100.100.1'
- set service pppoe-server name-server '10.100.200.1'
- set service pppoe-server interface 'eth1'
- set service pppoe-server local-ip '10.1.1.2'
-
-
-Once the user is connected, the user session is using the set limits and
-can be displayed via 'show pppoe-server sessions'.
-
-.. code-block:: none
-
- show pppoe-server sessions
- ifname | username | ip | calling-sid | rate-limit | state | uptime | rx-bytes | tx-bytes
- -------+----------+------------+-------------------+-------------+--------+----------+----------+----------
- ppp0 | foo | 10.1.1.100 | 00:53:00:ba:db:15 | 20480/10240 | active | 00:00:11 | 214 B | 76 B
-
-
-For RADIUS users
-^^^^^^^^^^^^^^^^
-
-The current attribute 'Filter-Id' is being used as default and can be
-setup within RADIUS:
-
-Filter-Id=2000/3000 (means 2000Kbit down-stream rate and 3000Kbit
-up-stream rate)
-
-The command below enables it, assuming the RADIUS connection has been
-setup and is working.
-
-.. cfgcmd:: set service pppoe-server authentication radius rate-limit enable
-
- Use this command to enable bandwidth shaping via RADIUS.
-
-Other attributes can be used, but they have to be in one of the
-dictionaries in */usr/share/accel-ppp/radius*.
-
-
-Load Balancing
---------------
-
-
-.. cfgcmd:: set service pppoe-server pado-delay <number-of-ms> sessions <number-of-sessions>
-
- Use this command to enable the delay of PADO (PPPoE Active Discovery
- Offer) packets, which can be used as a session balancing mechanism
- with other PPPoE servers.
-
-.. code-block:: none
-
- set service pppoe-server pado-delay 50 sessions '500'
- set service pppoe-server pado-delay 100 sessions '1000'
- set service pppoe-server pado-delay 300 sessions '3000'
-
-In the example above, the first 499 sessions connect without delay. PADO
-packets will be delayed 50 ms for connection from 500 to 999, this trick
-allows other PPPoE servers send PADO faster and clients will connect to
-other servers. Last command says that this PPPoE server can serve only
-3000 clients.
-
-
-IPv6
-----
-
-IPv6 client's prefix assignment
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-.. cfgcmd:: set service pppoe-server client-ipv6-pool prefix <address> mask <number-of-bits>
-
- Use this comand to set the IPv6 address pool from which a PPPoE
- client will get an IPv6 prefix of your defined length (mask) to
- terminate the PPPoE endpoint at their side. The mask length can be
- set from 48 to 128 bit long, the default value is 64.
-
-
-IPv6 Prefix Delegation
-^^^^^^^^^^^^^^^^^^^^^^
-
-.. cfgcmd:: set service pppoe-server client-ipv6-pool delegate <address> delegation-prefix <number-of-bits>
-
- Use this command to configure DHCPv6 Prefix Delegation (RFC3633). You
- will have to set your IPv6 pool and the length of the delegation
- prefix. From the defined IPv6 pool you will be handing out networks
- of the defined length (delegation-prefix). The length of the
- delegation prefix can be set from 32 to 64 bit long.
-
-
-Maintenance mode
-================
-
-.. opcmd:: set pppoe-server maintenance-mode <enable | disable>
-
- For network maintenance, it's a good idea to direct users to a backup
- server so that the primary server can be safely taken out of service.
- It's possible to switch your PPPoE server to maintenance mode where
- it maintains already established connections, but refuses new
- connection attempts.
-
-
-Checking connections
-====================
-
-.. opcmd:: show pppoe-server sessions
-
- Use this command to locally check the active sessions in the PPPoE
- server.
-
-
-.. code-block:: none
-
- show pppoe-server sessions
- ifname | username | ip | calling-sid | rate-limit | state | uptime | rx-bytes | tx-bytes
- -------+----------+------------+-------------------+-------------+--------+----------+----------+----------
- ppp0 | foo | 10.1.1.100 | 00:53:00:ba:db:15 | 20480/10240 | active | 00:00:11 | 214 B | 76 B
-
-
-Per default the user session is being replaced if a second
-authentication request succeeds. Such session requests can be either
-denied or allowed entirely, which would allow multiple sessions for a
-user in the latter case. If it is denied, the second session is being
-rejected even if the authentication succeeds, the user has to terminate
-its first session and can then authentication again.
-
-.. code-block:: none
-
- vyos@# set service pppoe-server session-control
- Possible completions:
- disable Disables session control
- deny Deny second session authorization
-
-
-
-
-
-
-Examples
-========
-
-IPv4
-----
-
-The example below uses ACN as access-concentrator name, assigns an
-address from the pool 10.1.1.100-111, terminates at the local endpoint
-10.1.1.1 and serves requests only on eth1.
-
-.. code-block:: none
-
- set service pppoe-server access-concentrator 'ACN'
- set service pppoe-server authentication local-users username foo password 'bar'
- set service pppoe-server authentication mode 'local'
- set service pppoe-server client-ip-pool start '10.1.1.100'
- set service pppoe-server client-ip-pool stop '10.1.1.111'
- set service pppoe-server interface eth1
- set service pppoe-server local-ip '10.1.1.2'
- set service pppoe-server name-server '10.100.100.1'
- set service pppoe-server name-server '10.100.200.1'
-
-
-
-Dual-Stack IPv4/IPv6 provisioning with Prefix Delegation
---------------------------------------------------------
-
-The example below covers a dual-stack configuration via pppoe-server.
-
-.. code-block:: none
-
- set service pppoe-server authentication local-users username test password 'test'
- set service pppoe-server authentication mode 'local'
- set service pppoe-server client-ip-pool start '192.168.0.1'
- set service pppoe-server client-ip-pool stop '192.168.0.10'
- set service pppoe-server client-ipv6-pool delegate '2001:db8:8003::/48' delegation-prefix '56'
- set service pppoe-server client-ipv6-pool prefix '2001:db8:8002::/48' mask '64'
- set service pppoe-server name-server '8.8.8.8'
- set service pppoe-server name-server '2001:4860:4860::8888'
- set service pppoe-server interface 'eth2'
- set service pppoe-server local-ip '10.100.100.1'
-
-The client, once successfully authenticated, will receive an IPv4 and an
-IPv6 /64 address to terminate the pppoe endpoint on the client side and
-a /56 subnet for the clients internal use.
-
-.. code-block:: none
-
- vyos@pppoe-server:~$ sh pppoe-server sessions
- ifname | username | ip | ip6 | ip6-dp | calling-sid | rate-limit | state | uptime | rx-bytes | tx-bytes
- --------+----------+-------------+--------------------------+---------------------+-------------------+------------+--------+----------+----------+----------
- ppp0 | test | 192.168.0.1 | 2001:db8:8002:0:200::/64 | 2001:db8:8003::1/56 | 00:53:00:12:42:eb | | active | 00:00:49 | 875 B | 2.1 KiB
-
-.. include:: /common-references.rst