L2TP tunnel. Internet using remote gateway.

RouterOS General
1

Hello,

i have L2TP tunnel like this(Router-to-Router):
http://www.mikrotik.com/testdocs/ros/3.0/vpn/l2tp_content.php#.6.1

and i want that all hosts on remote office go to internet through home office gateway(using ISP1). How to do such routing?

2

simply add default gateway to tunnel interface on your remote router, so all remote office’s traffic will go to the local router

3

I do not fully understand where should i do this.

4

it’s in IP/Routes =)

5

I don’t know how this rule should look. I have tried something but still can’t get it working.

6

any suggestions?

7

The simplest /ip route to route all traffic to office gateway,
/ip route add gateway=PPTP_remote_address dst-address=0.0.0.0/0

But you need to ensure that PPTP is up and running, there should be separate route for the internet connection to establish PPTP.

8

Thank you for all your reply’s. It is working. Now i have another question. Host on remote network after some time (~15 min) loses connectivity to internet and speed is very slow, but l2tp tunnel works fine. After changing default route to their own, everything works fine.

9

So my problem is solved with pptp tunnel.

Now i have another question. How to bypass this route to one or more users(ip address or Ethernet port). I want all users go to internet using remote gateway and one user go to internet using default ISP gateway.

any suggestions?

10

?

11

Policy-routing could be used to sent specific subnet over specific gateway.

/ip firewall mangle add action=routing-mark src/dst-addres
/ip route add gateway=x.x.x.x routing-mark=