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dfl-200 vpn and netbios

I have a connection between two networks over vpn. In the Main office there is a sonicwall tz-170 connected to the remote office over vpn with a d-link dfl-200 firewall. It works fine over tcp/ip protocols like ping - no problem. So far so good, but I need netbios for mounting a network drive in the main office. I tried other connections between sonicwalls and it works fine. I tried to configure on the dfl-200 some rules with ports 135-139 and 445 open for incoming and outgoing traffic but it  didnt work. I have poor experience with configuring a d-link firewall so my questions are now, is it possible to work over dfl-200 firewalls with netbios and when, are there specific parameters to set. I could not found any parameter to explicit enable netbios like in the sonicwall firewalls.
Thank you for your help
Heinz Weilaender
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hweilaender
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hweilaender
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Rob WilliamsCommented:
NetBIOS on a LAN relies primarily on NetBIOS broadcasts. Broadcast packets are not routable, and therefore cannot be forwarded over a VPN, using normal routing. Having said that, some VPN routers do have a feature that will forward the NetBIOS traffic, but the D-Link probably does not have that feature or it is not compatible with the Sonicwall.
If the primary site has a WINS server you can have the local DHCP server (D-Link or actual server) assign clients the remote WINS server which will allow for name NetBIOS resolution. The best option is a WINS server at each site that replicate between servers.
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ChiefITCommented:
I agree with Robwill, but have a little additional information to cheat from having a WINS server. There is an LMhost record that you can configure between the two domain master browsers of each site. If you go to the NICs of each domain master browser and enable LMHOST lookup. Then, you can configure the LMHOST record to carry your netbios broadcasts over a VPN connection if port 137 is not completely blocked.

You an edit this record using notepad. It is found at:
C:\windows\system32\dirvers\etc\LMHost.sam
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ChiefITCommented:
I was agreeing with what Robwill had to say. Do you mind if I reopen this and have points reassigned to what Rob mentioned?
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Rob WilliamsCommented:
CheifIT I have no problem with awarding of points that is an excellent tip, I would personally be happy to pay 500 points for that piece of knowledge :-)
--Rob
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