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L2 LAN bridging over internet using L2TPv2+EoIP: Difference between revisions

L2 LAN bridging over internet using L2TPv2+EoIP (view source)

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==Topology==
==Topology==


Placeholder
[[File:Networking rutxxx configuration examples l2tp+ eoip rut configuration topology v2.png|border|class=tlt-border|1100px]]


==Prerequisites==
==Prerequisites==
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Now we will add a new Firewall rule GRE Accept, for that you will need to execute these commands each one at a time(keep in mind that each command has to be executed in the order that has been provided below):
Now we will add a new Firewall rule GRE Accept, for that you will need to execute these commands each one at a time(keep in mind that each command has to be executed in the order that has been provided below):


uci add firewall rule
''uci add firewall rule''
uci set firewall.@rule[-1].name=GRE
 
uci set firewall.@rule[-1].target=ACCEPT
''uci set firewall.@rule[-1].name=GRE''
uci set firewall.@rule[-1].priority=14
 
uci set firewall.@rule[-1].src=l2tp
''uci set firewall.@rule[-1].target=ACCEPT''
uci set firewall.@rule[-1].enabled=1
 
uci set firewall.@rule[-1].proto=47
''uci set firewall.@rule[-1].priority=14''
uci set firewall.@rule[-1].utc_time=0
 
uci commit firewall && service firewall restart
''uci set firewall.@rule[-1].src=l2tp''
 
''uci set firewall.@rule[-1].enabled=1''
 
''uci set firewall.@rule[-1].proto=47''
 
''uci set firewall.@rule[-1].utc_time=0''
 
''uci commit firewall && service firewall restart''
 
 
Each command executed on the device should look like this:
 
[[File:Networking rutxxx configuration examples l2tp rut firewall gre v1.png|border|class=tlt-border]]
 
You can confirm if the new rule was added with the command '''cat/etc/config/firewall''' the output should look like this:
 
[[File:Networking rutxxx configuration examples l2tp rut gre confirmation v1.png|border|class=tlt-border]]
 
----
===EoIP configuration===
 
On the same CLI page we will execute additional UCI commands to configure, execute these commands each one at a time(keep in mind that each command has to be executed in the order that has been provided below):
 
''uci add eoip eoip''
 
''uci set eoip.@eoip[-1].enabled=1''
 
''uci set eoip.@eoip[-1].name=0''
 
''uci set eoip.@eoip[-1].idtun=123''
 
''uci set eoip.@eoip[-1].dst=10.0.0.1''
 
''uci set eoip.@eoip[-1].dynamic=1''
 
''uci commit eoip''
 
 
After that execute the command to start the EoIP service and check the status of it to confirm it is running with these commands:
 
/etc/init.d/eoip start
 
/etc/init.d/eoip status
 
The results of all of those commands should look similar to:
 
[[File:Networking rutxxx configuration examples eoip v1.png|border|class=tlt-border]]
 
----
 
===Bridging the EoIP to LAN===
 
Last step for Teltonika device is to bridge LAN interface with EoIP interface and changing the LAN interface to the DHCP Client, so the LAN would receive the IP from MikroTik device.
Once again we will need to open the WebUI of the Teltonika device and navigate to the '''Network → Interfaces → General''' Edit your '''LAN''' interface and change '''Protocol''' to '''DHCP'''.
 
[[File:Networking rutxxx configuration examples l2tp rut configuration v2.png|border|class=tlt-border|1100px]]
 
[[File:Networking rutxxx configuration examples LAN config v2.png|border|class=tlt-border|1100px]]
 
Now navigate to '''Physical Settings''' and in the Interface, section add 'zeoip0', you might require to type it manually if that doesn't show up from the drop-down menu. After that '''Save''' the configuration.
 
[[File:Networking rutxxx configuration examples LAN config v3.png|border|class=tlt-border|1100px]]
 
==Configuration of the MikroTik Device==
 
===L2TP configuration===
 
Now we will configure the L2TP Server on the MikroTik device. Open your device's WebUI and navigate to '''PPP → Interface → L2TP Server'''.
 
[[File:Networking rutxxx configuration examples L2TP Mikro v2.png|border|class=tlt-border]]
 
# Enable the L2TP Server
# Select profile '''default-encryption'''
# Save the configuration
 
Now we will configure L2TP client's username and password, addressing & profile information at '''PPP → Secrets''':
 
[[File:Networking rutxxx configuration examples L2TP Client Mikro v3.png|border|class=tlt-border]]
 
# Enable the client
# Create a name for the L2TP client
# Create a password for the L2TP client
# Create a Local Address for the L2TP Server (for this example we use 10.0.0.1)
# Create a Remote Address for the L2TP Client (for this example we use 10.0.0.2)
# Save the Configuration
 
----
 
===EoIP configuration===
 
Next we will configure EoIP on the MikroTik side, for that navigate to '''Interfaces → EoIP tunnel''' Add New interface and configure accordingly:
 
[[File:Networking rutxxx configuration examples EoIP MikroTik v2.png|border|class=tlt-border]]
 
# Enable the interface
# Create a name for the interface
# Input local address of the L2TP (in this example 10.0.0.1)
# Input remote address of the L2TP (in this example 10.0.0.2)
# Create a tunnel ID (it has to mach the ID configurated on the Teltonika device)
# Save the configuration
 
----
 
Now we will add EoIP to the Bridge, for that navigate to '''Bridge → Ports''' press the Add New button and configure the device accordingly:
 
[[File:Networking rutxxx configuration examples MikroTik bridge v1.png|border|class=tlt-border]]
 
# Enable the Bridge
# Select the EoIP Interface
# Save the configuration
 
----
 
===Firewall configuration===
 
Lastly we will need to configure Firewall correctly for EoIP and L2TP, firs navigate to '''IP → Firewall''' and edit rule called: '''drop all not coming through LAN''', make an exception for '''Src. Address: 10.0.0.2''' and '''Dst Address 10.0.0.1''' and Save the configuration. The configuration should look like this:
 
[[File:Networking rutxxx configuration examples MikroTik Firewall 1 v1.png|border|class=tlt-border]]
 
----
 
Now we will create a rule for '''1701 UDP''' port for L2TP tunnel, on the same page press the '''Add New''' button and configure new Firewall rule accordingly:
 
[[File:Networking rutxxx configuration examples MikroTik Firewall 2 v1.png|border|class=tlt-border]]
 
# Enable the rule
# Select the '''input'''
# '''Protocol:''' 17(udp)
# '''Dst. Port:''' 1701(L2TP port)
# Save the configuration
 
After that new Firewall rule will appear, move it to the top of the page by dragging it with the mouse cursor so it will have the highest priority.
 
==Testing the configuration==
 
If everything was configurated correctly Teltonnika and MikroTik devices will be connected via L2TP+EoIP and the Teltonika device should receive the LAN IP address of the MikroTik.
To confirm this on the Teltonika router's WebUI navigate to '''Network → Interfaces → General''' on the LAN interface you should see MikroTik IP(in this example 192.168.88.x):
 
[[File:Networking rutxxx configuration examples DHCP LAN v2.png|border|class=tlt-border|1100px]]
 
Additionally, we can check if we can reach MikroTik router through L2TP IP(10.0.0.1) or a device behind the MikroTik. Once again open your device's CLI/SSH and execute the command ping 10.0.0.1 you should be able to reach the MikroTik virtual IP:
 
[[File:Networking rutxxx configuration examples virtual ip ping.png|border|class=tlt-border]]
 
==See also==
 
[[L2TP configuration examples RutOS]]
 
==External links==
 
[https://wiki.mikrotik.com/wiki/Manual:Interface/EoIP MikroTik EoIP]
[[Category:VPN]]
Retrieved from "https://wiki.teltonika-networks.com/view/Special:MobileDiff/106819...109659"