L2TP-General settings

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NOTE: Please note the suggestions on the Gibraltar Homepage.

 

The configuration of L2TP is very similar to the configuration of PPTP.

 

ATTENTION: By using a L2TP connection, the traffic is handled over an IPSec tunnel. Therefore a few additional filter rules are necessary, to enable this traffic to pass the firewall unhindered. The L2TP connection establishment arrives at the IPSec interface of Gibraltar. So you have to allow the traffic from ipsec0 to LOCAL (Source and destination port on UDP/1701). The data itself goes over a PPP interface. Thus you also have to allow the traffic from ppp+ to the according net (e.g. from ppp+ to int). You should only open the ports you will really use.