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From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Patrick Dung <patrick_dkt@yahoo.com.hk>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Maximum number established TCP connection
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> Is it true that FreeBSD could handle 'unlimited' established TCP
> connections as long as it has enough CPU power and memory?
>
unlimited is too much said but 5000 doesn't seem a lot.

you may need to sysctl a bit but with up to 5000 connections probably not 
at all.