SIP Support in Windows Messenger

  • Thread starter Thread starter Guest
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G

Guest

Hi,

I have done a test and see that after the video/voice conversation has been
accepted. The invitee will send a SIP packet using a source port of 11655 to
a destination port of 7524.

I am trying to get a SIP aware firewall to allow the traffic, and need to
know if the ports used for the SIP packets are the same each time or do they
vary?
 
They vary dynamically.

You might be able to get this to work if UPnP is turned on, both on the
router and as a service on the PC.

Better suggestion though... Use Skype.
 
Hello Ian,

Is there a range from which the ports are allocated? I also want to make
sure that we are talking about the same ports. I am specifically looking for
the ports used by the SIP negotiations, and not the ports used for the actual
voice and video. The firewall that I have can look into the SIP packets and
look for the ports that will be used for the voice and video communications.
I just need to tell it what ports the SIP proctocol is using.
 
Hello, Roy!

You wrote in conference microsoft.public.windowsxp.messenger on Mon, 6 Mar 2006 06:13:26 -0800:

RL> Is there a range from which the ports are allocated? I also want to
make sure that we are talking about the same ports. I am specifically
looking for the ports used by the SIP negotiations, and not the ports
used for the actual voice and video. The firewall that I have can look
into the SIP packets and look for the ports that will be used for the
voice and video communications. I just need to tell it what ports the
SIP proctocol is using.


Inside your own domain you can use an administrative template for Windows Messenger, this one:
http://www.microsoft.com/downloads/...FC-B456-47F4-BE8C-9F16C96B3BDE&displaylang=en

Under "RTC Client API Policies" ("Computer" section) there is a setting "Specify Dynamic Port Ranges". I think this is what you need.
 
Alexey,

Thanks very much this is the sort of thing I need. Can I use the registry
settings manually?

If so what is the format of the objects in the key
Software\Policies\Microsoft\Windows\RTC\PortRange

Regards,
Roy.
 
Hello, Roy!

You wrote on Fri, 10 Mar 2006 08:55:29 -0800:

RL> Thanks very much this is the sort of thing I need. Can I use the
RL> registry settings manually?
RL> If so what is the format of the objects in the key
RL> Software\Policies\Microsoft\Windows\RTC\PortRange

Sorry for the late answer, i'm not quite used to nntp.

[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\RTC\PortRange]

"Enabled"=dword:00000001
"MinSipDynamicPort"=dword:00001bbc
"MaxSipDynamicPort"=dword:00001bbf
"MinMediaPort"=dword:000014e6
"MaxMediaPort"=dword:000014e9

These are the default settings.
 
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