Why is my system using port 4?

Posted by Kathleen on Super User See other posts from Super User or by Kathleen
Published on 2012-09-02T12:22:57Z Indexed on 2012/10/06 21:41 UTC
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windows-7

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internet

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port

I have Windows 7 and have noticed that my system is using port 4 to connect to a lot of different IP addresses. When it connects to them it is not for very long before it moves to another IP address.

One night I sat and wrote down as many as I could and started checking whois to see where they were and they were from all over the world. I don't understand this.

When I did a search on the net with this question. The only info I could come up with was, that port 4 is used by the US Army and a list of port assignments listed it as "unassigned". If anyone has any clues to what is going on... I would greatly appreciate any info I could get.

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