From: "Rich Gauszka" 

actually that limit started with XP sp2. There was no apparent registry
setting for it but a few patcher programs surfaced for the Windows TCP
library. Unfortunately none of those appear to work with Vista.

There's been a discussion of it both on the emule and msfn forums

http://www.msfn.org/board/index.php?act=ST&f=67&t=89394


"Geo."  wrote in message
news:4597139a$1{at}w3.nls.net...
> So I'm running emule and noticed it's not working as well as normal.
> Checking the event log I find this:
>
> TCP/IP has reached the security limit imposed on the number of concurrent
> TCP connect attempts.
>
> so now I have to deal with an artificial limit on the file sharing? Anyone
> know if there is a registry entry to up this stupid and arbitrary limit
> that is supposed to curb the effects of virus?
>
> Geo.

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