Programme sending out multicast packets
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Hi All, I have an interesting problem. When I start a programme or open a file from windows explorer the programme takes a really long time to open. This also happens when I right click on a file. Using Ethereal I noticed that some process is sending out a number of multicast packets. Other PC's seem to answer, but it takes some time. I have tried Spybot SD and it found nothing. I have tried Sysinternals port monitor and it shows no new processes start. Any idea's on how to fix this (other than disconnecting my network cable every time I open a file)? thanks, Rich
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far the Universe is winning." -- Rich Cook
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Hi All, I have an interesting problem. When I start a programme or open a file from windows explorer the programme takes a really long time to open. This also happens when I right click on a file. Using Ethereal I noticed that some process is sending out a number of multicast packets. Other PC's seem to answer, but it takes some time. I have tried Spybot SD and it found nothing. I have tried Sysinternals port monitor and it shows no new processes start. Any idea's on how to fix this (other than disconnecting my network cable every time I open a file)? thanks, Rich
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far the Universe is winning." -- Rich Cook
The reason for the multicast is probably that the program wants to check for duplicates of its registration number. You wouldn't use illegit duplicates would you ? :) You can prevent this with some firewall software. ZoneAlarm for example monitors/filters outgoing stuff.
_____________________________________ Action without thought is not action Action without emotion is not life
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The reason for the multicast is probably that the program wants to check for duplicates of its registration number. You wouldn't use illegit duplicates would you ? :) You can prevent this with some firewall software. ZoneAlarm for example monitors/filters outgoing stuff.
_____________________________________ Action without thought is not action Action without emotion is not life
Thanks. I am using a genuine copy of windows. I will have a look into the firewall. thanks :)
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far the Universe is winning." -- Rich Cook
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Hi All, I have an interesting problem. When I start a programme or open a file from windows explorer the programme takes a really long time to open. This also happens when I right click on a file. Using Ethereal I noticed that some process is sending out a number of multicast packets. Other PC's seem to answer, but it takes some time. I have tried Spybot SD and it found nothing. I have tried Sysinternals port monitor and it shows no new processes start. Any idea's on how to fix this (other than disconnecting my network cable every time I open a file)? thanks, Rich
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far the Universe is winning." -- Rich Cook
What port number (both your side and the port that the packets are sent to)? What's the multicast address? Ethereal/Wireshark can normally tell what protocol is involved if it's a standard port. You can discover the responsible process using netstat -b (Windows XP SP2 and later). You might need to also pass the -a switch to show non-connected ports and the -n switch to get numeric results. If the socket was opened by a process that's hosting multiple services, you also get a DLL trace of the call stack when the socket was opened.
Stability. What an interesting concept. -- Chris Maunder