Cannot access NAS over VPN

Hi all.
We have a Buffalo NAS connected to our network but it cannot be accessed via Windows VPN. I can ping the device by IP but cannot browse to it by IP or hostname, I cannot get to its http login screen either so that eliminates any permission errors. I have ran a tracert and it as no problem seeing the device. The gateway address is correct on the NAS and the VPN connection. The only thing that seems to be a bit different is that DHCP is set up on their mail server and Routing & Remote Access is set up on their DC, I don't know why this is it was already like that before I took over. I don't see why that would be causing an issue though as both servers are on the same local network and are visible over the VPN.
Cheers.
Martin AllenAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

ncomperCommented:
This is potentially a firewall issue. can you confirm that the Scope of IP addresses assigned in RRAS are permitted access to internal resources. It maybe that the firewall is locking down access to only selected resources but allowing ICMP through for ping testing.
Martin AllenAuthor Commented:
Thanks for the reply but Windows Firewall is turned off on both servers
ncomperCommented:
What router are you using? this could be blocking connectivity
Simplify Active Directory Administration

Administration of Active Directory does not have to be hard.  Too often what should be a simple task is made more difficult than it needs to be.The solution?  Hyena from SystemTools Software.  With ease-of-use as well as powerful importing and bulk updating capabilities.

lruiz52Commented:
Try Disabling the Routing and Remote Access Service, then Re-enable it.
Martin AllenAuthor Commented:
ncomper we have a Mikrotik that has no web interface and is configured with Telnet (another think I didn't know this place), I'll check out your link shortly.
Iruiz52 unfortunately that made no difference.
lruiz52Commented:
In the Routing and Remote Access General Tab,

is  the "Router" Check box checked and the "Local Area Network (LAN) routing only" selected?
Martin AllenAuthor Commented:
NAS was replaced

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Martin AllenAuthor Commented:
Issue resolved
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
VPN

From novice to tech pro — start learning today.