Nope...you can't really specify what IP address you want a program
to bind to, unless the program allows that functionality. The function
bind() associates a program with a port number, one of tha paramters you
pass to bind() is a SOCKADDR structure . One member of the function is
s_data, which contains the protocol-specific address information.
        So it's really the programmers decision, unless the programmer
decides to provide an interface from within the program. I'm not sure how NT
works under the hood, so I don't know what it would take to write a generic
utility to accomplish this: I would imagine it would involve some kernel
trickery..or a rewrite of the networking code.
        If anybody knows of such a utility, I would be intrested in seeing
the source.

 --c0ncept

-----Original Message-----
From: Focus on Microsoft Mailing List [mailto:FOCUS-MSSECURITYFOCUS.COM]On
Behalf Of Sean Eby
Sent: Thursday, April 05, 2001 1:49 PM
To: FOCUS-MSSECURITYFOCUS.COM
Subject: Re: binding services to specific IP numbers.

Interesting, I have not heard of a generic utility that will allow NT to do
that. As stated, Symantec may have that ability, but as far as other
applications, you may be out of luck unless each specific application allows
you to specify which interfaces and/or which IP's your machine is used to
listen on. Also, you MAY be able to configure one interface or another with
IP filtering. In other words, filter the port Pc Anywhere uses to listen on
on the interface you don't want people to be able to access it with... ???
Not sure.

Sean
----- Original Message -----
From: "Matt Cole" <mcoleSIGPC.COM>
To: <FOCUS-MSSECURITYFOCUS.COM>
Sent: Wednesday, April 04, 2001 7:10 PM
Subject: Re: binding services to specific IP numbers.

I'm not sure about any other services, but it can be done with PC
Anywhere in versions 8+. There is a tech document on the Symantec web
page that describes the registry edit. If you can't find it, let me know
any I'll dig it up.

-R. Matthew Cole
MCSE, MCP+I, NT-CIP
Field Services Manager
EPOS Corporation

-----Original Message-----
From: Reuven Twito [mailto:reuvenSPIDERSERVICES.COM]
Sent: Wednesday, April 04, 2001 2:12 PM
To: FOCUS-MSSECURITYFOCUS.COM
Subject: binding services to specific IP numbers.

Hi there All,

I am looking for a way to bind services to only
specific IP numbers on a multihomed NT machines (NT4 and 2000).

the idea is to have two interfaces on the NT box one for administration
purposes and one for production.

what I would like to do is to use some services ( say PC-anywhere )
that will only bind to the IP number of the administration card.

any one knows if I can do that ??

TIA...

 Reuven Twito

 Chief technologies officer
 Spider Solution LTD.
 Tel: +972-3-576-6980
 mobile: +972-50-641549
 Fax: +972-3-751-3626
 06 Ha'chilazon Street
 Ramat Gan 52522, Israel
 E-mail: reuvenspiderservices.com

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