Stephen:
Heya. One of the original replies to this thread suggested
you try EchoVNC, and maybe that's a better solution for you. Using
EchoVNC, you can establish a persistent TCP connection to an
echoServer of your choice (ideally, one you control). We run one
a demo one at "demo.echovnc.com:443", password "demo2006" if you'd
like to try it out.
Don't get me wrong: Hamachi is a good solution for establishing
firewall-friendly connections across the Internet, for most users.
AFIAK, though, it uses a UDP punch-thru technique described here:
http://www.brynosaurus.com/pub/net/p2pnat/
As that paper describes, the UDP technique will not work
well in environments that (1) restrict outbound data to TCP, (2)
utilize a web-proxy, or (3) utilize a NAT'ing router that doesn't
work correctly with the Hamachi UDP synchronization.
hope that helps,
Scott
Here is the reply from Forum..
Hello,
Is it possible to connect two machines or two networks which are behind
the firewall of ISP and are from different countries?
Actually, We can surf the webpage only.. The ISP blocks the most of
ports and the most of protocols.....
If all you have is Web (port 80) access, then you cannot use Hamachi
as it requires fairly liberal Internet access policies. In particular
it requires outbound UDP access, which you lack.
So, How can we have Remote Desktop connection or VPN between those
machines?
I found echoServer VNC tool.. but I got some erros when I tried to
connect.
Is there other ways i can try?
Again, if you can only connect out on port 80, then you need to
have something on a target machine listening on port 80. It is
also likely to need to understand HTTP as you are probably behind
Web proxy. I would suggest to ask in vnc-list for what would work
the best in this case.
<snip>
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