Setting up VPN for remote worker

Hi guys,

Not sure if this is the right place for this but here goes. P. S. On mobile so sorry for the formatting.

So I'm trying to get a VPN setup for some of our workers in order to work from home. We were originally using PPTP tunneling for this with a local user on the router. This works ok for the most part but wasn't really ideal as it didn't really give us access to company resources on our network properly.

So I decided to setup an L2TP/IPSec connection which uses an ipsec psk and LDAP for L2TP authentication. Now the connection is established ok but we're still having issues accessing resources and pinging known good host names doesn't yield a response. I'm guessing DNS issues?

Is there anything I can check as this also seems to affect GPO updates to the remote pc.

Has anyone had any experience setting up this kind of VPN?

Router we have is Draytek 3900 if that helps any?

Any advice would be appreciated.

Thanks