Re: Trying to get around TCP UDP port security in XP

From: The Atomic Ass (the_atomic_ass@SPAM.KILLER.runbox.com)
Date: 08/15/02 

From: The Atomic Ass <the_atomic_ass@SPAM.KILLER.runbox.com>
Date: Thu, 15 Aug 2002 06:10:32 GMT

TheRayBan elegantly belched in
news:pTY59.4503$GK7.178801727@newssvr21.news.prodigy.com:

> Trying to get a java program that sends small messages (believe they are
> called "datagrams"??) to my computer. The program I am trying to use
> must be started in a DOS Prompt/Command Prompt and it uses TCP and UDP
> ports to send and receive messages/datagrams.
>
> The problem: We can not get it to work on our machine running Win ME or
> the machine running Win XP, but it will run on the machine running
> Win98SE. All machines are connected to the same Linksys router.
>
> Question: What is it in Win ME or Win XP that could be blocking these
> messages from coming in? We are using TCP port 1500 and UDP port 1500,
> but this program can use any port number over 1000. Is there something
> in these two versions of Windows protecting these ports and keeping
> these messages from coming in?
>
> It appears we are able to connect to the remote Hub/Server, but we
> cannot receive the messages from the remote hub/server, so we can get
> out, but nothing will come in.
>
> Any ideas on what to turn off or on that might open these ports up or
> etc to block this possible security issue with the ports? DSLreports
> PORT SCAN results said "ALL UDP Ports Closed" and I cannot figure out
> how to open them??
>
> BTW... we are NOT using WinXP's Firewall (it is off) or any other
> firewall and not using XP's ICS. Also, we have the proper ports
> forwarded with our Linksys router.
>
> Thank you! The RayBan
>
> PS. I installed the java 2 runtime environment on all three machine (XP,
> Me and Win98SE machine) and the XP and ME machine still would not allow
> messages in, but the Win98SE will. Just don't get it??? Thanks again!
>
>

Did you check the "Virtual Server" or "Port Forwarding" settings in your
router? This is probably at fault. 

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