Regarding your remote-access question: you can't do it
(with VNC) without the support of your company's IT staff. Sorry.
You have to admit it'd question the integrity of your company's
IT policy if "ordinary" users could arbitrarily install VNC and
access their PC's externally. :) Also, please know that while
SSH can secure VNC traffic and improve the authentication of the
connection, it doesn't help at all with "breeching" the firewall
defenses of your company.

SSH most certainly can help with this!!


I have an ADSL router at home with no 'holes' in it (i.e. I have no port forwards through it to computers inside my NAT), yet I regularly connect to my two laptops from outside (using VNC onto port 5900, and straight-forward SSH onto port 22, of any machine I choose).

The key is to use a *remote* port forward, initiated beforehand using SSH (client) from the machine(s) within the NAT/firewall, onto an external machine which is running an SSH server (-you don't even need an SSH server on your own machine). Then, later on when outside the NAT/firewall, you point the viewer to the appropriate port on the external machine instead of trying to contact your own machine. The remote port forward which is set up on that external machine then sends all data back to your machine residing behind the apparently impenetrable NAT/firewall.

This requires *no* support from 'company IT staff', and no configuration of ports on your/their router/NAT/firewall.

If anyone needs more details, let me know...

Bye!

Adrian
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