I am currently on a IPv4 network. The IPv4 network is accessed by a router, which gives my machines IPv4 addresses via NAT.
On one of the machines, a Windows 2008 64-bit machine, I have set up a IPv6 tunnel. This allows me to access IPv6 sites by using IPv6 to IPv4 tunnelling to a IPv4 server, which de-encapsulate the packets and routes them to the IPv6 sites.
After setting up the IPv6 tunnel, I noticed a security issue. All ports exposed by the Windows machine is accessible by anyone who knows my IPv6 address.
My question is, does anyone know how I can block traffic at the IPv6 tunnel?
I have Googled around, but so far, I have been unable to find any solutions.