Trying to connect to Network Share fails - tap works/tun fails

[Gio]

Hi guys

I am new to OpenVPN and pfSense, I am trying to use OpenVPN to access my home file server where I store important documents on a RAID array. Trying to accomplish this via OpenVPN. I am able to successfully connect to VPN using either TUN or TAP and I am able to ping my pfSense LAN interface (192.168.1.50)

My home network is 192.168.1.0/24 - Router 192.168.1.1
Workstation IP is 192.168.1.127
Server IP is 192.168.1.135

While connected as TUN - I can ping 192.168.1.50 but I cannot ping workstation (192.168.1.127). I changed settings to TAP and ping and remote browse works. My Windows workstation is set to map //gserver (dns name for the file server) – however my PC seems to be using the ISP's DNS server as 1st preference instead of using OpenVPN DNS settings.

Any help?

1. How can I get my VPN tunnel to resolve DNS using my remote router at home? (where ARP should record NETBIOS names also)
2. What am I doing wrong that I cannot browse my "Windows Network" and see my neighbors? can I do this with TUN or only with TAP?
3. Why can't I ping my workstation 192.168.1.127 using TUN?

Thanks!!