Hi all,

I am trying to use an application that listens for incoming traffic on UDP port 15003, 
and it keeps complaining that the port is blocked. 

I thought it might be the router, so I tried to run the program on a friend's computer 
(I live in a university dorm), and everything worked perfectly. Therefore, I concluded 
it must be my machine that gives me trouble.

From there, I shut down my ZA firewall (I never used the WinXP one, it's been off 
forever). There is no other application that I can think of that could be blocking 
ports (of course, I don't have more than one firewall installed). 

I checked the PID of the program I want to run, then looked up the connections on 
netstat, and I can see it appear in the list:

UDP    0.0.0.0:15003          *:*                                    592
[dtella.exe]

So it must have been able to open the port and bind to it, but apparently it receives 
no traffic on it... What could be the problem? Honestly, at this point, I am lost 
and I don't know what else I could try. 

Thanks in advance for any suggestions you might have.

Tip: Run a free scan for common Windows errors ad

re: Traffic blocked on UDP port 15003 Sunday, November 15, 2009 at 6:39 am Posted by Norm (1501 messages posted) Well I would say that if it worked on another system Zone Alarm may still be the problem. You may have to completely remove ZA from your system. If you are behind a router anyway Windows firewall should good enough. See this or do a Google on complete ZA removal. Good luck!! http://forums.zonelabs.com/showthread.php?t=70341 [Reply or follow-up to this message] re: Traffic blocked on UDP port 15003 Sunday, November 15, 2009 at 11:36 am Posted by Ari (1378 messages posted) Are you absolutely 100% positive that your friend's computer is behind the same router that your computer is behind? I don't understand how his could possibly work if he's behind a router, unless he has set the router to forward that port to his PC. And if the router is maintained by the university, that seems unlikely. On Sunday, November 15, 2009 at 3:28 am, gazeto wrote: >Hi all, > >I am trying to use an application that listens for incoming traffic on UDP port 15003, >and it keeps complaining that the port is blocked. > >I thought it might be the router, so I tried to run the program on a friend's computer >(I live in a university dorm), and everything worked perfectly. Therefore, I concluded >it must be my machine that gives me trouble. > >From there, I shut down my ZA firewall (I never used the WinXP one, it's been off >forever). There is no other application that I can think of that could be blocking >ports (of course, I don't have more than one firewall installed). > >I checked the PID of the program I want to run, then looked up the connections on >netstat, and I can see it appear in the list: > >UDP 0.0.0.0:15003 *:* 592 >[dtella.exe] > >So it must have been able to open the port and bind to it, but apparently it receives >no traffic on it... What could be the problem? Honestly, at this point, I am lost >and I don't know what else I could try. > >Thanks in advance for any suggestions you might have. [Reply or follow-up to this message] re: Traffic blocked on UDP port 15003 Sunday, November 15, 2009 at 2:17 pm Posted by Adam Bradley (8786 messages posted) From my quick googling it looks like dtella is a P2P program of some kind. it is very common for universities to block them to keep their bandwidth from being swamped. On Sunday, November 15, 2009 at 3:28 am, gazeto wrote: >Hi all, > >I am trying to use an application that listens for incoming traffic on UDP port 15003, >and it keeps complaining that the port is blocked. > >I thought it might be the router, so I tried to run the program on a friend's computer >(I live in a university dorm), and everything worked perfectly. Therefore, I concluded >it must be my machine that gives me trouble. > >From there, I shut down my ZA firewall (I never used the WinXP one, it's been off >forever). There is no other application that I can think of that could be blocking >ports (of course, I don't have more than one firewall installed). > >I checked the PID of the program I want to run, then looked up the connections on >netstat, and I can see it appear in the list: > >UDP 0.0.0.0:15003 *:* 592 >[dtella.exe] > >So it must have been able to open the port and bind to it, but apparently it receives >no traffic on it... What could be the problem? Honestly, at this point, I am lost >and I don't know what else I could try. > >Thanks in advance for any suggestions you might have. [Reply or follow-up to this message] Tip: Use one of the [Reply or follow-up to this message] links above to add a message to this thread Search this forum Start a new thread on a different subject Report abuse of the forum Return to the Windows XP Discussion Forum