Can ipsec be routed over l2tp

Configuration Roadmap The configuration roadmap is as follows: Configure the IP address and static route on each interface to implement communication between interfaces. Configure an IPSec proposal to define the traffic protection method.

Apply the IPSec policy group to an interface so that the interface can protect traffic. Please, consult the respective manual on how to set up a L2TP client with the software you are using. To disable IpSec, registry modifications are required.

At this point when L2TP client is successfully connected if you will try to ping any workstation from the laptop, ping will time out, because Laptop is unable to get ARPs from workstations.

Solution is to set up proxy-arp on local interface. After proxy-arp is enabled client can now successfully reach all workstations in local network behind the router. Office and Home routers are connected to internet through ether1 , workstations and laptops are connected to ether2. Both local networks are routed through L2TP 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 L2TP tunnel with local interface.

Notice that we set up L2TP to add route whenever client connects. If this option is not set, then you will need static routing configuration on the server to route traffic between sites through L2TP tunnel. On home router if you wish traffic for the remote office to go over tunnel you will need to add a specific static route as follows:.

Note: Care must be taken if static ipsec peer configuration exists. Client needs secure connection to the office with public address 1. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Ask Question. Asked 7 years, 9 months ago. Active 4 years, 11 months ago. Viewed 33k times. The only issue is We don't want client to route all traffic using this VPN, only a particular subnet, e. So, it is possible to configure for the client automatically for the subnet " Improve this question.

Danila Ladner 5, 20 20 silver badges 30 30 bronze badges. Howard Howard 1, 11 11 gold badges 45 45 silver badges 66 66 bronze badges. Have you tried disabling the 'send all traffic over VPN' or similar option on the client? Add a comment.

Active Oldest Votes. Let me clarify it once and for all : The short answer is L2TP and PPTP for that matter do not have facilities to do route pushes inside the protocol, but it can be achieved outside the protocol. This DHCP option contains a set of routes that are automatically added to the routing table of the requesting client I slavishly copy-and-pasted this line directly from Microsoft documentation : the VPN server replies to that message with appropriate set of routes Well, there is a caveat: there is RFC describing "DHCP Classless Static Routes" and there it states that the code for this option is You are advised to disable tunnel authentication.

In Properties , set Startup type to Automatic and click Apply. Then select Start in Service type. Close the Services page. Select Network and Internet. Select Network and Sharing Center.

Select Set up a new connection or network. Select Connect to a workplace. In the left pane of Network and Sharing Center , select Change adapter setting.