RE: FN-FORUM: TCP/IP Properties

date posted 5th February 2007 21:20

> > Presumably the Web server is hosted in a data centre and you connect
> > remotely using remote desktop, terminal services, VNC, etc. I suspect
> > they're using NAT or UPnP equipment. The theory goes that, given a
> > subnet mask of 255.255.255.255, the Web server should not be able to
> > connect to other computers. Can you actually ping, traceroute, or browse
> > the Internet from the machine? I can understand 1&1 attempting to
> > prevent access to computers on a similar network, if only for security
> > reasons.
> >
> > I agree, logically the gateway is on a completely inaccessible network.
> > Perhaps 1&1 can shed a little more light on this puzzling setup.

Here is the reply from 1&1 about the strange setup:

"The subnet defines which part of the IP is the network part and which is
the host part.
(http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing)
In our network, each IP is treated as it's own network; this does not mean
that it cannot talk to servers outside of that network. In fact, using a
subnet of 255.255.255.0 on a dedicated server will work for the most part,
but you may not be able to connect to some other machines within the
network."