Repetition of some well known facts and a standard procedure:
- local computers are not reachable from the outside world as this is the definition of "local"
- all our "normal" LANs uses subnets in several sub-ranges of
172.16.0.0/12. E.g. Telematic uses
- the Sensor Lab's net is behind a local router
172.22.255.253) and uses a private network
- standard protocol to access local machines from outside is SSH
- to reach (for example)
tmgsim1.sl.tmg.locyou need to login to a public server first and then connect to the final destination
This does work only if your destination address:port is reachable from the single intermediate hop.
Accessing a virtual Windows Desktop from a local Windows machine
tmgsim4.tmg.locis running Windows 7
Please note that this machine is not located in the Sensor Lab Network because of limitations of the available license for Qualnet.
~$ host tmgsim4.tmg.loc tmgsim4.tmg.loc has address 172.22.98.204
Use the login server (
login.stud.informatik.uni-goettingen.de) and establish Port Forwarding of an arbitray /unused local port (e.g. 12345) to port 3389 on that target machine using PuTTY.
For reference: the unix command line looks like this:
ssh -L 12345:tmgsim4.tmg.loc:3389 firstname.lastname@example.org
In PuTTY you need to go to Connections --> SSH --> Tunnels and fill Source Port with 12345 and Destination with
tmgsim4.tmg.loc:3389. After pressing "Add" the result is one line in the "Forwarded Ports" list reading:
Now you can connect with
rdesktop (Linux) or "
Remote Desktop Connection" (Windows) to
You will get a windows login screen. Log in with your credentials in the usual form, e.g.
Please note the number of licenses is small, so you might not be able to use Qualnet.
Successfully verified: Eduroam/WLAN --> login.stud --> rdesktop --> Qualnet. Udo, 05.10.2011
Please read, adapt and document here :-)