Some months ago we replaced an ancient Internet Satellite service for a 3G Modem, all this at a remote location.
It has been a great success, 8 times more bandwidth for a 1/6 of the old price.
Our 3G internet provider gave us a Huawei E 968 router. That’s the better router they “endorse”
We want now to setup a L2TP VPN between this location an our central office.
The problem is the E 968 router, it is almost no configurable at all. We can not configure it as a bridge, there are space for 10 or 12 rules for port forwarding, DMZ configuration is possible.
Can we configure a MikroTik (we have RouterBoard 750G with version 4.11) so the E 968 provides Internet to the MT and then use the MT as a router for the rest of the network, thus allowing us to setup the L2TP VPN we want.
Sounds like they are forcing NAT on you, which doesn’t help… but try setting the remote office as the L2TP server, and your MT behind the 968 as the L2TP client and connect to the remote office that way. If it connects, then you are good. Just setup your routing and firewall however you need it to work for your scenario. If it doesn’t work, you can try the other VPN protocols in Miktorik like SSTP or IPSEC, EOIP, etc.