Advantage to running as a service?

grindy · Post by **grindy** » 2006-04-06 04:07

Is there any advantage to running UltraVNC as a service?
thx

rmoller · Post by **rmoller** » 2006-04-06 08:56

Yes.

You can send Alt-Ctrl_del to the server, and it will be correctly processed. You can also log off and on, and you can connect to a server, even when there is no user logged on yet.

Just to mention a few.

grindy · Post by **grindy** » 2006-04-07 01:38

rmoller wrote:Yes.

You can send Alt-Ctrl_del to the server, and it will be correctly processed. You can also log off and on, and you can connect to a server, even when there is no user logged on yet.

Just to mention a few.

Ok, thank you for that.
Are there any disadvantages?

rmoller · Post by **rmoller** » 2006-04-18 08:37

Disadvantages are mainly slightly higher resource utilization when not active.

In some (company) scenarios, security policies may interfere.

Mainly, it is an open, listening TCP port.

Or, someone could connect to a server, while nobody is logged on, and just wait until a new user logs on directly to the server. The new user might not be aware that his session is being monitored (or possibly manipulated).

You can get the advantages of the service without the security implications by not accepting socket connections, but using reverse connection only, like SingleClick.

grindy · Post by **grindy** » 2006-04-19 02:26

rmoller wrote:Disadvantages are mainly slightly higher resource utilization when not active.

In some (company) scenarios, security policies may interfere.

Mainly, it is an open, listening TCP port.

Or, someone could connect to a server, while nobody is logged on, and just wait until a new user logs on directly to the server. The new user might not be aware that his session is being monitored (or possibly manipulated).

You can get the advantages of the service without the security implications by not accepting socket connections, but using reverse connection only, like SingleClick.

Are you listing these as disadvantages to RD or UltraVNC ?

rmoller · Post by **rmoller** » 2006-04-19 11:42

grindy wrote:
rmoller wrote:Disadvantages are mainly slightly higher resource utilization when not active.

In some (company) scenarios, security policies may interfere.

Mainly, it is an open, listening TCP port.

Or, someone could connect to a server, while nobody is logged on, and just wait until a new user logs on directly to the server. The new user might not be aware that his session is being monitored (or possibly manipulated).

You can get the advantages of the service without the security implications by not accepting socket connections, but using reverse connection only, like SingleClick.
Are you listing these as disadvantages to RD or UltraVNC ?

No, as disadvantages running UltraVNC in service mode as opposed to user (non-service) mode.

You may want to read this topic: [topic=269]XP Remote Desktop vs. UltraVNC.[/topic]

Post by **Rudi De Vos** » 2006-04-19 13:34

The biggest disadvantage is that the service can only interact with session0.

Until win 2000, the console always was session0. But all later version
can have a console session other the 0.
XP: fast user switching
win2003: After a RDP connection
Vista: the console is never session0

As the service can only interact with session0. In XP and win2003 you need to force the console to session0. This can only be done by disconnecting the current console user and restart a new console .
Not a proper way....but the only possible.

Vista is still a big challenge, as service will not work at all.

Natural, security....
A service run as system, while vnc as app takes the user permission.

grindy · Post by **grindy** » 2006-04-19 15:20

Now I finally understand...
Thank you both for your patience and explainations...