XP Firewall and Opening a UDP Port

[Guest]

I am developing a FileMaker application which is required to "listen" to a specified UDP port in order to receive messages from a server. I have everything working perfectly, except that I cannot for the life of me comprehend how to "open" the UDP port. I have gone into the Network Connection Properties/Advanced/Settings and created a new service for FileMaker, entering the local IP address of the machine and the port number I want opened

I know the server is sending the proper messages, because I can look in the firewall log and see them has having been dropped. Thus, I know the message is being sent to and received at the proper place, but FileMaker cannot "hear" the message, as the effort to open the port as described obviously did nothing

This procedure is the only thing I can find about UDP in Windows Help, so I have no other ideas

Should I be doing something else?

 

[Carey Frisch [MVP]]

Please visit the Firewall experts in the Firewall newsgroup:
news://msnews.microsoft.com/microsoft.public.windows.networking.firewall

--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User

Be Smart! Protect your PC!
http://www.microsoft.com/security/protect/

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| I am developing a FileMaker application which is required to "listen" to a specified UDP port in order to
receive messages from a server. I have everything working perfectly, except that I cannot for the life of me
comprehend how to "open" the UDP port. I have gone into the Network Connection Properties/Advanced/Settings
and created a new service for FileMaker, entering the local IP address of the machine and the port number I
want opened.
|
| I know the server is sending the proper messages, because I can look in the firewall log and see them has
having been dropped. Thus, I know the message is being sent to and received at the proper place, but FileMaker
cannot "hear" the message, as the effort to open the port as described obviously did nothing.
|
| This procedure is the only thing I can find about UDP in Windows Help, so I have no other ideas.
|
| Should I be doing something else?

 

[Bruce Chambers]

Greetings --

WinXP's built-in firewall is _not_ designed to be used on internal
LAN connections. The only connection on which you should have ICF
enabled is the connection to the Internet.

Description of the Windows XP Internet Connection Firewall
http://support.microsoft.com/default.aspx?scid=kb;en-us;320855

Internet Firewalls Can Prevent Browsing and File Sharing
http://support.microsoft.com/default.aspx?scid=kb;EN-US;298804


Bruce Chambers

--
Help us help you:



You can have peace. Or you can have freedom. Don't ever count on
having both at once. -- RAH

I am developing a FileMaker application which is required to

"listen" to a specified UDP port in order to receive messages from a
server. I have everything working perfectly, except that I cannot for
the life of me comprehend how to "open" the UDP port. I have gone into
the Network Connection Properties/Advanced/Settings and created a new
service for FileMaker, entering the local IP address of the machine
and the port number I want opened.

I know the server is sending the proper messages, because I can look

in the firewall log and see them has having been dropped. Thus, I know
the message is being sent to and received at the proper place, but
FileMaker cannot "hear" the message, as the effort to open the port as
described obviously did nothing.

This procedure is the only thing I can find about UDP in Windows

Help, so I have no other ideas.