Post by getsgets100Un po' complicato per le mie scarsa abilità ... Mi sembra di capire
che devo caricare il programma e poi cliccare su "EnableUPnP" e mi
sparisce il problema. il programma lo devo attivare quando mi si
presenterà il problema ancora oppure lo posso far partire subito?
What, exactly, does UnPnP do?
Under Windows XP, the Universal Plug & Play system is supported by two
service processes, the "SSDP Discovery Service" (SSDPDS) and the "Universal
Plug and Play Device Host" (UPNPDH). Although both services are started upon
demand, the SSDP service is started when Windows XP is booted. The SSDPDS
service is the Internet server component which opens and exposes Windows XP
to the global Internet. The UPNPDH service is only started when needed and
its operation is dependent upon SSDPDS.
PLEASE NOTE: There is a great deal of confusion being caused by
Microsoft's non-obvious naming of the two UPnP services. This situation is
exacerbated by the FBI's NIPC web site, which has unfortunately posted wrong
information over the holidays. People are led to believe that disabling the
service named "Universal Plug and Play Device Host" disables the UPnP
system. But it does not. That service is not even running by default. The
correct action is to STOP then DISABLE the service named "SSDP Discovery
Service".
You can demonstrate this for yourself by issuing the command
"netstat -an" at a command prompt. While the SSDP Discovery service is
running, Netstat will show that TCP port 5000 is in the listening state and
UDP port 1900 is accepting inbound datagrams. After the SSDP Discovery
Service has been stopped those Netstat lines will disappear.
To disable the Universal Plug & Play system: UnPnP first stops the UPNPDH
service if it is running, then disables its future operation. After this is
done the SSDPDS service is stopped and also disabled. This shuts down
Windows XP's external Internet server to prevent exposure to any presently
known or later discovered UPnP vulnerabilities.
To re-enable the Universal Plug & Play system: UnPnP simply reverses the
process. The SSDPDS service is set to start on demand, and it is then
started. Then, the UPNPDH service is also set to start on demand, but it is
not started. With the SSDPDS service running the Windows XP system will have
TCP port 5000 open and accepting remote connections and UDP port 1900
listening for inbound datagrams.
UnPnP's actions are completely benign and reversible. There are no known
negative side effects caused by disabling the Universal Plug & Play
components when they are not needed. They may easily be re-enabled if they
are ever needed at any time in the future.
One important note of caution: Microsoft has a nasty and very insecure habit
of "undoing" non-standard system changes that have been made to enhance the
system's security. We will update this page if we learn of anything that
secretly re-enables these services. But you may want to briefly run UnPnP
from time to time, especially after making extensive changes to your system,
to be sure everything is still securely disabled.
--
Edoardo Benussi - ***@mvps.org
Microsoft® MVP - Windows Server
http://mvp.support.microsoft.com
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