Re: Tcp concurrent connection limit in sp2
From: Roger Abell [MVP] (mvpNoSpam_at_asu.edu)
Date: 08/29/04
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Date: Sat, 28 Aug 2004 18:07:19 -0700
Yes, but notice this DoS attack feature is not the same as the
hard limit on simultaneous connections that NT family non-server
version have always had. The DoS attack rate-limitiing feature is
distinctly different and it can be relaxed.
-- Roger Abell Microsoft MVP (Windows Server System: Security) MCDBA, MCSE W2k3+W2k+Nt4 "Fritz" <fritz@biteme.net> wrote in message news:%23YjLNHEjEHA.644@tk2msftngp13.phx.gbl... >I knew I've seen it somewhere. > > "The TCP/IP stack now limits the number of simultaneous incomplete > outbound TCP connection attempts. After the limit has been reached, > subsequent connection attempts are put in a queue and will be resolved at > a fixed rate. Under normal operation, when applications are connecting to > available hosts at valid IP addresses, no connection rate-limiting will > occur. When it does occur, a new event, with ID 4226, appears in the > system's event log." > > http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/sp2netwk.mspx#XSLTsection127121120120 > > "Carey Frisch [MVP]" <cnfrisch@nospamgmail.com> wrote in message > news:e6ieRO%23iEHA.592@TK2MSFTNGP11.phx.gbl... >> The concurrent connections for SP2 have not been changed: >> >> XP Pro: 10 and XP Home: 5 >> >> -- >> Carey Frisch >> Microsoft MVP >> Windows XP - Shell/User >> >> Be Smart! Protect Your PC! >> http://www.microsoft.com/athome/security/protect/default.aspx >> >> ------------------------------------------------------------------------- >> >> "Roman" wrote: >> >> | Does anyone know how to remove the security limit imposed >> | my xp sp2 on the number of concurrent tcp connections? >> | sp2 causes some of my programs to error with the error # >> | 10055 because of this new limitation sp2 implements. > >
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