Manual:Interface/PPTP: Difference between revisions
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{{Versions|v3, v4, v5}} | {{Versions|v3, v4, v5+}} | ||
<div class=manual> | <div class=manual> | ||
==Summary== | |||
<p><b>Standards:</b> <code>RFC 2637</code></p> | <p id="shbox"><b>Standards:</b> <code>RFC 2637</code></p> | ||
<br /> | <br /> | ||
<p> | <p> | ||
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</p> | </p> | ||
<p> | <p> | ||
Multilink PPP (MP) is supported in order to provide MRRU (the ability to transmit full-sized 1500 and larger packets) and bridging over PPP links (using Bridge Control Protocol (BCP) that allows | Multilink PPP (MP) is supported in order to provide MRRU (the ability to transmit full-sized 1500 and larger packets) and bridging over PPP links (using Bridge Control Protocol (BCP) that allows the sending of raw Ethernet frames over PPP links). This way it is possible to setup bridging without EoIP. The bridge should either have an administratively set MAC address or an Ethernet-like interface in it, as PPP links do not have MAC addresses. | ||
</p> | </p> | ||
<p> | <p> | ||
Line 17: | Line 17: | ||
</p> | </p> | ||
<p> | <p> | ||
MPPE 128bit RC4 encryption is supported. | |||
</p> | </p> | ||
<p> | <p> | ||
Line 26: | Line 26: | ||
</p> | </p> | ||
==PPTP Client== | |||
<p><b>Sub-menu:</b> <code>/interface pptp-client</code></p> | <p id="shbox"><b>Sub-menu:</b> <code>/interface pptp-client</code></p> | ||
===Properties=== | |||
{{Mr-arg-table-h | {{Mr-arg-table-h | ||
Line 56: | Line 56: | ||
|default= | |default= | ||
|desc=Remote address of PPTP server | |desc=Remote address of PPTP server | ||
}} | |||
{{Mr-arg-table | |||
|arg=default-route-distance | |||
|type=byte [0..255] | |||
|default=1 | |||
|desc=sets distance value applied to auto created default route, if <var>add-default-route</var> is also selected | |||
}} | }} | ||
Line 62: | Line 69: | ||
|type=<nowiki>yes | no</nowiki> | |type=<nowiki>yes | no</nowiki> | ||
|default=no | |default=no | ||
|desc= | |desc=connects to PPTP server only when outbound traffic is generated. If selected, then route with gateway address from 10.112.112.0/24 network will be added while connection is not established. | ||
}} | }} | ||
Line 70: | Line 77: | ||
|default=yes | |default=yes | ||
|desc=Whether interface is disabled or not. By default it is disabled | |desc=Whether interface is disabled or not. By default it is disabled | ||
}} | |||
{{Mr-arg-table | |||
|arg=keepalive-timeout | |||
|type=integer | |||
|default=60 | |||
|desc=Sets keepalive timeout in seconds. | |||
}} | }} | ||
Line 123: | Line 137: | ||
===Quick example=== | |||
<p> | <p> | ||
This example demonstrates how to set up PPTP client with username "pptp-hm", password "123" and server 10.1.101.100 | This example demonstrates how to set up PPTP client with username "pptp-hm", password "123" and server 10.1.101.100 | ||
Line 129: | Line 143: | ||
<pre> | <pre> | ||
/interface pptp-client add name=pptp-hm user=pptp-hm password=123 connect-to=10.1.101.100 disabled=no | |||
</pre> | |||
<pre> | |||
/interface pptp-client print detail | |||
Flags: X - disabled, R - running | Flags: X - disabled, R - running | ||
0 name="pptp-hm" max-mtu=1460 max-mru=1460 mrru=disabled | 0 name="pptp-hm" max-mtu=1460 max-mru=1460 mrru=disabled | ||
Line 137: | Line 152: | ||
profile=default-encryption add-default-route=no dial-on-demand=no | profile=default-encryption add-default-route=no dial-on-demand=no | ||
allow=pap,chap,mschap1,mschap2 | allow=pap,chap,mschap1,mschap2 | ||
</pre> | |||
==PPTP Server== | |||
<p><b>Sub-menu:</b> <code>/interface pptp-server</code></p> | <p id="shbox"><b>Sub-menu:</b> <code>/interface pptp-server</code></p> | ||
<p> | <p> | ||
Line 152: | Line 167: | ||
<li>Dynamic interfaces are added to this list automatically whenever a user is connected and its username does not match any existing static entry (or in case the entry is active already, as there can not be two separate tunnel interfaces referenced by the same name). | <li>Dynamic interfaces are added to this list automatically whenever a user is connected and its username does not match any existing static entry (or in case the entry is active already, as there can not be two separate tunnel interfaces referenced by the same name). | ||
</ul> | </ul> | ||
Dynamic interfaces appear when a user connects and disappear once the user disconnects, so it is impossible to reference the tunnel created for that use in router configuration (for example, in firewall), so if you need | Dynamic interfaces appear when a user connects and disappear once the user disconnects, so it is impossible to reference the tunnel created for that use in router configuration (for example, in firewall), so if you need persistent rules for that user, create a static entry for him/her. Otherwise it is safe to use dynamic configuration. | ||
</p> | </p> | ||
{{Note | in both cases PPP users must be configured properly - static entries do not replace PPP configuration.}} | {{Note | in both cases PPP users must be configured properly - static entries do not replace PPP configuration.}} | ||
===Server configuration=== | |||
<p><b>Sub-menu:</b> <code>/interface pptp-server server</code></p> | <p id="shbox"><b>Sub-menu:</b> <code>/interface pptp-server server</code></p> | ||
Properties | |||
''Properties'' | |||
{{Mr-arg-table-h | {{Mr-arg-table-h | ||
Line 178: | Line 194: | ||
|type=name | |type=name | ||
|default=default-encryption | |default=default-encryption | ||
|desc= | |desc=Default [[PPP_AAA#User_Profiles | PPP Profile]] to use | ||
}} | }} | ||
Line 192: | Line 208: | ||
|type=time | |type=time | ||
|default=30 | |default=30 | ||
|desc= | |desc= If server during keepalive period does not receive any packet, it will send keepalive packets every second five times. If the server does not receives response from the client, then disconnect after 5 seconds. | ||
Logs will show 5x "LCP missed echo reply" messages and then disconnect. | |||
}} | }} | ||
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To enable PPTP server: | To enable PPTP server: | ||
<pre> | <pre> | ||
/interface pptp-server server set enabled=yes | |||
</pre> | |||
<pre> | |||
/interface pptp-server server print | |||
enabled: yes | enabled: yes | ||
max-mtu: 1460 | max-mtu: 1460 | ||
Line 228: | Line 247: | ||
keepalive-timeout: 30 | keepalive-timeout: 30 | ||
default-profile: default | default-profile: default | ||
</pre> | </pre> | ||
==Monitoring== | |||
Monitor command can be used to monitor status of the tunnel on both client and server. | Monitor command can be used to monitor status of the tunnel on both client and server. | ||
<pre> | <pre> | ||
/interface pptp-client monitor 0 | |||
status: "connected" | status: "connected" | ||
uptime: 7h24m18s | uptime: 7h24m18s | ||
Line 242: | Line 259: | ||
mtu: 1460 | mtu: 1460 | ||
mru: 1460 | mru: 1460 | ||
</pre> | </pre> | ||
Line 254: | Line 270: | ||
|arg=status | |arg=status | ||
|type= | |type= | ||
|desc=Current PPTP status. Value other than "connected" indicates that there are some problems | |desc=Current PPTP status. Value other than "connected" indicates that there are some problems establishing tunnel. | ||
}} | }} | ||
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</table> | </table> | ||
==Application Examples== | |||
===Connecting Remote Client=== | |||
<p>The following example shows how to connect a computer to a remote office network over PPTP encrypted tunnel giving that computer an IP address from the same network | <p>The following example shows how to connect a computer to a remote office network over a PPTP encrypted tunnel giving that computer an IP address from the same network that the remote office has (without any need of bridging over EoIP tunnels). | ||
</p> | </p> | ||
<p> | <p> | ||
Consider following setup | Consider following setup: | ||
</p> | </p> | ||
[[File:pptp-rem-offoce.png]] | [[File:pptp-rem-offoce.png]] | ||
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First step is to create a user | First step is to create a user | ||
<pre> | <pre> | ||
/ppp secret add name=Laptop service=pptp password=123 local-address=10.1.101.1 \ | |||
local-address=10.1.101.1 remote-address=10.1.101.100 | remote-address=10.1.101.100 | ||
</pre> | |||
<pre> | |||
/ppp secret print detail | |||
Flags: X - disabled | Flags: X - disabled | ||
0 name="Laptop" service=pptp caller-id="" password="123" profile=default | 0 name="Laptop" service=pptp caller-id="" password="123" profile=default | ||
local-address=10.1.101.1 remote-address=10.1.101.100 routes=="" | local-address=10.1.101.1 remote-address=10.1.101.100 routes=="" | ||
</pre> | </pre> | ||
<p> | <p> | ||
Notice that | Notice that the PPTP local address is the same as the router's address on the local interface and the remote address is from the same range as the local network (10.1.101.0/24). | ||
</p> | </p> | ||
<p>Next step is to enable | <p>Next step is to enable the PPTP server and the PPTP client on the laptop.</p> | ||
<pre> | <pre> | ||
/interface pptp-server server set enabled=yes | |||
</pre> | |||
<pre> | |||
/interface pptp-server server print | |||
enabled: yes | enabled: yes | ||
max-mtu: 1460 | max-mtu: 1460 | ||
Line 329: | Line 347: | ||
keepalive-timeout: 30 | keepalive-timeout: 30 | ||
default-profile: default | default-profile: default | ||
</pre> | </pre> | ||
<p> | <p> | ||
PPTP client from the laptop should connect to routers public IP which in our example is 192.168.80.1. <br /> | PPTP client from the laptop should connect to routers public IP which in our example is 192.168.80.1. <br /> | ||
(Consult the respective manual on how to set up a PPTP client with the operating system software you are using). | |||
</p> | </p> | ||
<p> | <p> | ||
At this point (when | At this point (when PPTP client is successfully connected) if you try to ping any workstation form the laptop, the ping will time out because the Laptop is unable to get ARPs from workstations. The solution is to set up <var>proxy-arp</var> on the local interface. | ||
</p> | </p> | ||
<pre> | <pre> | ||
/interface ethernet set Office arp=proxy-arp | |||
</pre> | |||
<pre> | |||
/interface ethernet print | |||
Flags: X - disabled, R - running | Flags: X - disabled, R - running | ||
# NAME MTU MAC-ADDRESS ARP | # NAME MTU MAC-ADDRESS ARP | ||
0 R ether1 1500 00:30:4F:0B:7B:C1 enabled | 0 R ether1 1500 00:30:4F:0B:7B:C1 enabled | ||
1 R ether2 1500 00:30:4F:06:62:12 proxy-arp | 1 R ether2 1500 00:30:4F:06:62:12 proxy-arp | ||
</pre> | </pre> | ||
<p> | <p> | ||
After <var>proxy-arp</var> is enabled client can successfully reach all workstations in local network behind the router. | After <var>proxy-arp</var> is enabled, the remote client can successfully reach all workstations in the local network behind the router. | ||
</p> | </p> | ||
===Site-to-Site PPTP=== | |||
<p>The following is an example of connecting two Intranets using PPTP tunnel over the Internet.</p> | <p>The following is an example of connecting two Intranets using PPTP tunnel over the Internet.</p> | ||
<p> | <p> | ||
Consider following setup | Consider following setup: | ||
</p> | </p> | ||
[[File:site-to-site-pptp-example.png]] | [[File:site-to-site-pptp-example.png]] | ||
<p> | <p> | ||
Office and Home routers are connected to internet through <b>ether1</b>, workstations and laptops are connected to <b>ether2</b>. | Office and Home routers are connected to the internet through <b>ether1</b>, workstations and laptops are connected to <b>ether2</b>. | ||
Both local networks are routed through | Both local networks are routed through a PPTP client, thus they are not in the same broadcast domain. If both networks should be in the same broadcast domain then you need to use [[#Read More | BCP]] and bridge the PPTP tunnel with the local interface. | ||
</p> | </p> | ||
First step is to create a user | First step is to create a user | ||
<pre> | <pre> | ||
/ppp secret add name=Home service=pptp password=123 local-address=172.16.1.1 \ | |||
local-address=172.16.1.1 remote-address=172.16.1.2 routes="10.1. | remote-address=172.16.1.2 routes="10.1.202.0/24 172.16.1.2 1" | ||
</pre> | |||
<pre> | |||
/ppp secret print detail | |||
Flags: X - disabled | Flags: X - disabled | ||
0 name="Home" service=pptp caller-id="" password="123" profile=default | 0 name="Home" service=pptp caller-id="" password="123" profile=default | ||
local-address=172.16.1.1 remote-address=172.16.1.2 routes=="10.1. | local-address=172.16.1.1 remote-address=172.16.1.2 routes=="10.1.202.0/24 172.16.1.2 1" | ||
</pre> | </pre> | ||
<p> | <p> | ||
Notice that we set up | Notice that we set up PPTP server's PPP secret where a route is added automatically whenever the client connects. If this option is not set, then you will need to add static routing on the server to route traffic between the two sites through the PPTP tunnel. (See [[Manual:PPP_AAA#User_Database | PPP User Database]] for more info on <var>routes</var> variable). | ||
</p> | </p> | ||
Next step is to enable the PPTP server on the office router and configure the PPTP client on the Home router. | |||
<pre> | <pre> | ||
/interface pptp-server server set enabled=yes | |||
</pre> | </pre> | ||
<pre> | <pre> | ||
/interface pptp-server server> print | |||
enabled: yes | enabled: yes | ||
max-mtu: 1460 | max-mtu: 1460 | ||
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keepalive-timeout: 30 | keepalive-timeout: 30 | ||
default-profile: default | default-profile: default | ||
</pre> | </pre> | ||
<pre> | <pre> | ||
/interface pptp-client add user=Home password=123 connect-to=192.168.80.1 disabled=no | |||
</pre> | |||
<pre> | |||
/interface pptp-client print | |||
Flags: X - disabled, R - running | Flags: X - disabled, R - running | ||
0 name="pptp-out1" max-mtu=1460 max-mru=1460 mrru=disabled connect-to=192.168.80.1 user="Home" | 0 name="pptp-out1" max-mtu=1460 max-mru=1460 mrru=disabled connect-to=192.168.80.1 user="Home" | ||
password="123" profile=default-encryption add-default-route=no dial-on-demand=no | password="123" profile=default-encryption add-default-route=no dial-on-demand=no | ||
allow=pap,chap,mschap1,mschap2 | allow=pap,chap,mschap1,mschap2 | ||
</pre> | </pre> | ||
Now after tunnel is established you should be able to ping remote network | Now we need to add the route to reach the local network behind the Home router | ||
<pre> | |||
/ip route add dst-address=10.1.101.0/24 gateway=pptp-out1 | |||
</pre> | |||
Now after the tunnel is established and routes are set, you should be able to ping remote network. | |||
==Read More== | |||
<ul class="bullets"> | <ul class="bullets"> | ||
<li>[[Manual:BCP_bridging_(PPP_tunnel_bridging) | BCP (Bridge Control Protocol)]] | <li>[[Manual:BCP_bridging_(PPP_tunnel_bridging) | BCP (Bridge Control Protocol)]] | ||
<li>http:// | <li>http://technet.microsoft.com/en-us/library/cc768084.aspx | ||
<li>http://www.ietf.org/rfc/rfc2637.txt?number=2637 | <li>http://www.ietf.org/rfc/rfc2637.txt?number=2637 | ||
<li>http://www.ietf.org/rfc/rfc3078.txt?number=3078 | <li>http://www.ietf.org/rfc/rfc3078.txt?number=3078 | ||
Line 420: | Line 439: | ||
</ul> | </ul> | ||
[[Category:Manual]] | |||
[[Category:VPN]] | {{Cont}} | ||
[[Category:Interface]] | |||
[[Category:Manual|P]] | |||
[[Category:VPN|P]] | |||
[[Category:Interface|P]] |
Latest revision as of 14:46, 4 January 2017
Summary
Standards: RFC 2637
PPTP is a secure tunnel for transporting IP traffic using PPP. PPTP encapsulates PPP in virtual lines that run over IP. PPTP incorporates PPP and MPPE (Microsoft Point to Point Encryption) to make encrypted links. The purpose of this protocol is to make well-managed secure connections between routers as well as between routers and PPTP clients (clients are available for and/or included in almost all OSs including Windows).
Multilink PPP (MP) is supported in order to provide MRRU (the ability to transmit full-sized 1500 and larger packets) and bridging over PPP links (using Bridge Control Protocol (BCP) that allows the sending of raw Ethernet frames over PPP links). This way it is possible to setup bridging without EoIP. The bridge should either have an administratively set MAC address or an Ethernet-like interface in it, as PPP links do not have MAC addresses.
PPTP includes PPP authentication and accounting for each PPTP connection. Full authentication and accounting of each connection may be done through a RADIUS client or locally.
MPPE 128bit RC4 encryption is supported.
PPTP traffic uses TCP port 1723 and IP protocol GRE (Generic Routing Encapsulation, IP protocol ID 47), as assigned by the Internet Assigned Numbers Authority (IANA). PPTP can be used with most firewalls and routers by enabling traffic destined for TCP port 1723 and protocol 47 traffic to be routed through the firewall or router.
PPTP connections may be limited or impossible to setup though a masqueraded/NAT IP connection. Please see the Microsoft and RFC links listed below for more information.
PPTP Client
Sub-menu: /interface pptp-client
Properties
Property | Description |
---|---|
add-default-route (yes | no; Default: no) | Whether to add PPTP remote address as a default route. |
allow (mschap2 | mschap1 | chap | pap; Default: mschap2, mschap1, chap, pap) | Allowed authentication methods. |
connect-to (IP; Default: ) | Remote address of PPTP server |
default-route-distance (byte [0..255]; Default: 1) | sets distance value applied to auto created default route, if add-default-route is also selected |
dial-on-demand (yes | no; Default: no) | connects to PPTP server only when outbound traffic is generated. If selected, then route with gateway address from 10.112.112.0/24 network will be added while connection is not established. |
disabled (yes | no; Default: yes) | Whether interface is disabled or not. By default it is disabled |
keepalive-timeout (integer; Default: 60) | Sets keepalive timeout in seconds. |
max-mru (integer; Default: 1460) | Maximum Receive Unit. Max packet size that PPTP interface will be able to receive without packet fragmentation. |
max-mtu (integer; Default: 1460) | Maximum Transmission Unit. Max packet size that PPTP interface will be able to send without packet fragmentation. |
mrru (disabled | integer; Default: disabled) | Maximum packet size that can be received on the link. If a packet is bigger than tunnel MTU, it will be split into multiple packets, allowing full size IP or Ethernet packets to be sent over the tunnel. Read more >> |
name (string; Default: ) | Descriptive name of the interface. |
password (string; Default: "") | Password used for authentication. |
profile (name; Default: default-encryption) | Used PPP profile. |
user (string; Default: ) | User name used for authentication. |
Quick example
This example demonstrates how to set up PPTP client with username "pptp-hm", password "123" and server 10.1.101.100
/interface pptp-client add name=pptp-hm user=pptp-hm password=123 connect-to=10.1.101.100 disabled=no
/interface pptp-client print detail Flags: X - disabled, R - running 0 name="pptp-hm" max-mtu=1460 max-mru=1460 mrru=disabled connect-to=10.1.101.100 user="pptp-hm" password="123" profile=default-encryption add-default-route=no dial-on-demand=no allow=pap,chap,mschap1,mschap2
PPTP Server
Sub-menu: /interface pptp-server
This sub-menu shows interfaces for each connected PPTP clients.
An interface is created for each tunnel established to the given server. There are two types of interfaces in PPTP server's configuration
- Static interfaces are added administratively if there is a need to reference the particular interface name (in firewall rules or elsewhere) created for the particular user.
- Dynamic interfaces are added to this list automatically whenever a user is connected and its username does not match any existing static entry (or in case the entry is active already, as there can not be two separate tunnel interfaces referenced by the same name).
Dynamic interfaces appear when a user connects and disappear once the user disconnects, so it is impossible to reference the tunnel created for that use in router configuration (for example, in firewall), so if you need persistent rules for that user, create a static entry for him/her. Otherwise it is safe to use dynamic configuration.
Note: in both cases PPP users must be configured properly - static entries do not replace PPP configuration.
Server configuration
Sub-menu: /interface pptp-server server
Properties
Property | Description |
---|---|
authentication (pap | chap | mschap1 | mschap2; Default: mschap1,mschap2) | Authentication methods that server will accept. |
default-profile (name; Default: default-encryption) | Default PPP Profile to use |
enabled (yes | no; Default: no) | Defines whether PPTP server is enabled or not. |
keepalive-timeout (time; Default: 30) | If server during keepalive period does not receive any packet, it will send keepalive packets every second five times. If the server does not receives response from the client, then disconnect after 5 seconds. Logs will show 5x "LCP missed echo reply" messages and then disconnect. |
max-mru (integer; Default: 1460) | Maximum Receive Unit. Max packet size that PPTP interface will be able to receive without packet fragmentation. |
max-mtu (integer; Default: 1460) | Maximum Transmission Unit. Max packet size that PPTP interface will be able to send without packet fragmentation. |
mrru (disabled | integer; Default: disabled) | Maximum packet size that can be received on the link. If a packet is bigger than tunnel MTU, it will be split into multiple packets, allowing full size IP or Ethernet packets to be sent over the tunnel. Read more >> |
To enable PPTP server:
/interface pptp-server server set enabled=yes
/interface pptp-server server print enabled: yes max-mtu: 1460 max-mru: 1460 mrru: disabled authentication: mschap2,mschap1 keepalive-timeout: 30 default-profile: default
Monitoring
Monitor command can be used to monitor status of the tunnel on both client and server.
/interface pptp-client monitor 0 status: "connected" uptime: 7h24m18s idle-time: 6h21m4s encoding: "MPPE128 stateless" mtu: 1460 mru: 1460
Read-only properties
Property | Description |
---|---|
status () | Current PPTP status. Value other than "connected" indicates that there are some problems establishing tunnel. |
uptime (time) | Elapsed time since tunnel was established. |
idle-time (time) | Elapsed time since last activity on the tunnel. |
encoding () | Used encryption method |
mtu (integer) | Negotiated and used MTU |
mru (integer) | Negotiated and used MRU |
Application Examples
Connecting Remote Client
The following example shows how to connect a computer to a remote office network over a PPTP encrypted tunnel giving that computer an IP address from the same network that the remote office has (without any need of bridging over EoIP tunnels).
Consider following setup:
Office router is connected to internet through ether1. Workstations are connected to ether2. Laptop is connected to the internet and can reach Office router's public IP (in our example it is 192.168.80.1).
First step is to create a user
/ppp secret add name=Laptop service=pptp password=123 local-address=10.1.101.1 \ remote-address=10.1.101.100
/ppp secret print detail Flags: X - disabled 0 name="Laptop" service=pptp caller-id="" password="123" profile=default local-address=10.1.101.1 remote-address=10.1.101.100 routes==""
Notice that the PPTP local address is the same as the router's address on the local interface and the remote address is from the same range as the local network (10.1.101.0/24).
Next step is to enable the PPTP server and the PPTP client on the laptop.
/interface pptp-server server set enabled=yes
/interface pptp-server server print enabled: yes max-mtu: 1460 max-mru: 1460 mrru: disabled authentication: mschap2 keepalive-timeout: 30 default-profile: default
PPTP client from the laptop should connect to routers public IP which in our example is 192.168.80.1.
(Consult the respective manual on how to set up a PPTP client with the operating system software you are using).
At this point (when PPTP client is successfully connected) if you try to ping any workstation form the laptop, the ping will time out because the Laptop is unable to get ARPs from workstations. The solution is to set up proxy-arp on the local interface.
/interface ethernet set Office arp=proxy-arp
/interface ethernet print Flags: X - disabled, R - running # NAME MTU MAC-ADDRESS ARP 0 R ether1 1500 00:30:4F:0B:7B:C1 enabled 1 R ether2 1500 00:30:4F:06:62:12 proxy-arp
After proxy-arp is enabled, the remote client can successfully reach all workstations in the local network behind the router.
Site-to-Site PPTP
The following is an example of connecting two Intranets using PPTP tunnel over the Internet.
Consider following setup:
Office and Home routers are connected to the internet through ether1, workstations and laptops are connected to ether2. Both local networks are routed through a PPTP client, thus they are not in the same broadcast domain. If both networks should be in the same broadcast domain then you need to use BCP and bridge the PPTP tunnel with the local interface.
First step is to create a user
/ppp secret add name=Home service=pptp password=123 local-address=172.16.1.1 \ remote-address=172.16.1.2 routes="10.1.202.0/24 172.16.1.2 1"
/ppp secret print detail Flags: X - disabled 0 name="Home" service=pptp caller-id="" password="123" profile=default local-address=172.16.1.1 remote-address=172.16.1.2 routes=="10.1.202.0/24 172.16.1.2 1"
Notice that we set up PPTP server's PPP secret where a route is added automatically whenever the client connects. If this option is not set, then you will need to add static routing on the server to route traffic between the two sites through the PPTP tunnel. (See PPP User Database for more info on routes variable).
Next step is to enable the PPTP server on the office router and configure the PPTP client on the Home router.
/interface pptp-server server set enabled=yes
/interface pptp-server server> print enabled: yes max-mtu: 1460 max-mru: 1460 mrru: disabled authentication: mschap2 keepalive-timeout: 30 default-profile: default
/interface pptp-client add user=Home password=123 connect-to=192.168.80.1 disabled=no
/interface pptp-client print Flags: X - disabled, R - running 0 name="pptp-out1" max-mtu=1460 max-mru=1460 mrru=disabled connect-to=192.168.80.1 user="Home" password="123" profile=default-encryption add-default-route=no dial-on-demand=no allow=pap,chap,mschap1,mschap2
Now we need to add the route to reach the local network behind the Home router
/ip route add dst-address=10.1.101.0/24 gateway=pptp-out1
Now after the tunnel is established and routes are set, you should be able to ping remote network.
Read More
- BCP (Bridge Control Protocol)
- http://technet.microsoft.com/en-us/library/cc768084.aspx
- http://www.ietf.org/rfc/rfc2637.txt?number=2637
- http://www.ietf.org/rfc/rfc3078.txt?number=3078
- http://www.ietf.org/rfc/rfc3079.txt?number=3079
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