If I understand your use case I guess you'd need
(1) a TSR prog running on each PC behind the router/firewall
(2) have the TSR remotely interrogable
(3) have the TSR send the magic packet to whichever local machine the
interrogation commanded
Presumably this is something Teamview does; in my infrequent
interactions with it I seem to recall it loads a TSR if not told otherwise.
I recollect that Mike thought there was a use case for Guacamole to do
something similar to Teamviewer. This would be excellent in my view
(Guacamole being open, and amongst other things the Teamviewer license
model/cost is 'difficult' for very low and/or intermittent commercial
use), but I expect it would require a similar small TSR of some sort to
operate. While there are other things it would need to do I guess this
magic packet functionality could be included...
Obviously this would require some work and while I like to help sadly
I'm no programmer - therefore it would need to wait till whenever
someone with the necessary skills is able to do this.
In the interim, if it were me, I'd guess I'd consider assigning one
machine in each remote as a 'server', which doesn't have WOL enabled,
and run a small permanent [Linux] VM effectively as a TSR that would
allow you to interrogate and command a magic packet to whichever [other]
machine you want to turn on.
In effect this is what I do in one office with Guacamole running as a
permanent VM on a M$ box that is also used as a standard client machine.
This VM allows remote access to the host and other PC's in that office.
Should the host machine be turned off Vbox just runs on start, and loads
the Guacamole VM in the background - in your case you'd not require
Guacamole, just a very minimal Linux install. It's a little clunky but
it could work?
On 12/12/2019 12:30 a.m., WhiteTiger wrote:
Thanks for the reply.
I am also used to installing services behind the firewall of remote offices.
But I often find myself in the need to connect offices with a few PCs, from
2 to 5, and it is not always possible to mount a dedicated PC or even a
Raspberry.
This is why I imagined a central server that would allow connections in this
way:
PC 1-1 = IP1: Port 6901
PC 1-2 = IP1: Port 6902
PC 2-1 = IP2: Port 6901
...
PC N-1 = IP "N": Port 6901
Obviously the local firewall addressed the traffic coming from the IP of the
Guacamole Server to the various PCs using the ports as a reference.
About your answer on WOL, I find it useless if the Guacamole server is
behind the firewall because I could very well take control of the server and
from there send the Magic Packet using one of the many Linux utilities.
The situation would be different if the server is centralized, but there
would always be the problem of how to send the Magic Packet to the various
networks via the Internet.
Team Viewer uses the other PCs in the network.
First I identify in the configuration the various PCs and when I want to
turn on the PC number 5, for example, TeamViewer goes to see if there is
another PC active and sends the Magic Packet from this to the number 5.
I don't know how to do it, I never investigated it.
However, this is convenient because if I have to connect to a PC that is
turned off, I don't have to make another remote connection just to turn it
on.
Maybe there's another utility in Linux
ivanmarcus wrote
(1) A separate instance per site would be the best, and what everyone
would recommend. I suppose you could use a central instance and provide
sufficient routes to each individual PC but I expect it would be much
slower from a user perspective, and less secure - altogether a bad idea.
...
(6) A while ago I wrote a small Python script that runs with Guacamole
and sends out the necessary magic packet. In the site I have this
running on it has worked well. Once again the detail on that is in the
archives here:
http://mail-archives.apache.org/mod_mbox/guacamole-user/201802.mbox/%
3C1519671051084-0.post@.nabble
%3E
Having said that I believe Nick was working on a 'proper' WOL extension
for Guacamole at one stage. This may integrate with the GUI, allowing
one to set the MAC address in the connection page, although that's
purely my speculation! Nick may update us on this?
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