re: msmsgs.exe Port 1900
Wednesday, December 31, 2003 at 5:57 am
Windows XP Annoyances Discussion Forum
Posted by Jeruvy
(1 messages posted)
I noticed your suggestion, however I cannot find this key in my registry.
On Saturday, September 20, 2003 at 4:44 am, DDK wrote:
>is-it-true.org/nt/xp/registry/rtips18.shtml
>
>In XP, the Simple Service Discovery Protocol (SSDP) discovery service searches for
>Universal Plug and Play devices on your home network. SSDP searches for upstream
>Internet gateways using UDP port 1900 - a potential security risk many organizations
>will want to block. OK, you decide to block SSDP services but to your surprise,
your
>firewall and network sniffers continue to see the UDP port 1900 packets. You have
>disabled XP's SSDP and even Universal Plug and Play Device Host. Whats going on?
>This is Universal Plug and Play Network Address Translation (NAT) traversal discovery
>used by Messenger. If you run a sniffer trace, the following information is displayed
>in the data section of the packet:
>
>SSDP: Method = M-SEARCH
>SSDP: Uniform Resource Identifier = *
>SSDP: HTTP Protocol Version = HTTP/1.1
>SSDP: Host = 239.255.255.250:1900
>SSDP: Search Target = urn:schemas-upnp-org:device:InternetGatewayDevice:1
>SSDP: Mandatory Extension = "ssdp:discover"
>SSDP: Maximum Wait = 3
>XP's Windows Messenger is attempting to communicate to an Internet host. To block
>Windows Messenger's broadcasts:
>
>Hive: HKEY_LOCAL_MACHINE
>Key: Software\Microsoft\DirectPlayNATHelp\DPNHUPnP
>Name: UPnPMode
>Type: REG_DWORD
>Value: 2 disabled
>With UPnPMode=2, Universal Plug and Play Network Address Translation (NAT) traversal
>discovery does not occur.
>__________________
>It Works
>
>
- Written in response to:
- re: msmsgs.exe Port 1900 (DDK: Saturday, September 20, 2003 at 4:44 am)
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