Client > NAT/Firewall (HTTP only) > NAT/Firewall > Server

[landeshauptstadt]

Hi,

Situtation: We're sitting in a LAN behind a strong Firewall. Every request goes throw a Proxy and just over Port 80.
We want to connect to other machines outside, in the www and don't know the machine-names of our clients yet.
And mostly of them will also sit behind a Firewall that just supports Requests on Port 80!

Question I:
So is it possible to create a UltraVNC SC File, that just can be opened by a user (server mode) and connect to us throw these proxies?

Question II:
Which information has to be given to establish a connection?

Thanks in advance,

landeshauptstadt