McAfee ENDPOINT ENCRYPTION ENTERPRISE - BEST PRACTICES GUIDE Specifiche Scaricare il pdf (Pagina 15)

15



TCP/IPKeepAliveTimeReduction

ReducethissettingonallEEPCserversfromtwohours(thedefault)tofiveminutes.Theserverwillrequirea

restart.Oncethisisdone,ifanendpointclientlosestheconnectionwiththeserver,theserverwillreleasethe

lockafterapproximately5minutes.Thiswillalsopreventbrokenremotesbadmclcon

nectionsfromlocking

thescriptinguseraccountfor2hours.



Procedure

1. OpenRegedit

2. Goto:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters

3. OpenorcreatetheDwordKeepAliveTime

4. Changethevalueto300000indecimals(Timeinmilliseconds)



Extrainfo

TheKeepAliveTimesettingcontrolshowoftenkeep‐alivepacketsaresentinmilliseconds(30

0,000is

recommended).ItcontrolshowoftenTCPsendsakeep‐alivepackettoverifythatanidleconnectionisstill

intact.Iftheremotecomputerisstillreachable,itacknowledgesthekeep‐alivepacket.

MSKBarticle:http://support.microsoft.com

/default.aspx?scid=kb;en‐us;324270#EQACAAA



Key:Tcpip\Parameters

ValueType:REG_DWORD(Timeinmilliseconds)

ValidRange:1‐0xFFFFFFFF

Default:7,200,000(twohours)



NOTE:AsimilarsettingKeepAliveIntervalhasadefault1000(=1second),thissettingiscorrectsodonot

changethis.

LastAccessTimeStamp(NtfsDisableLastAccessUpdate)

Withlargedatabases,itispossiblethatsomegroupsmaybecomeoverpopulated.Whenalargegroupis

opened(forexampleonewithover5000users),itcantakesometimetoopen.Toreduceharddiskreadand

writetime,aregistrysettingcanbesettopreventtheLastAccesstimest

ampfrombeingupdatedoneveryfile

access.Theperformanceboostwillbeabout50%!Arestartisneededafterthechange.



Procedure

1. Openregedit.

2. GotoHKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem.

3. CreateanewDWORDvalue,ormodifytheexistingvalue,named"NtfsDisableLastAccessUpdate"and

setitto"1".

Microsoftarticle:http://technet2.microsoft.com/Wind

owsServer/en/library/80dc5066‐7f13‐4ac3‐8da8‐

48ebd60b44471033.mspx?mfr=true

WindowsServerasaFileServer

TuneMicrosoftWindows2003servertobeafileserver.

SeetheMicrosoftarticlehttp://support.microsoft.com/kb/174619

aboutthis.

Theory

IncreaseNTFSMFT(MasterFileTable,usedtobeFAT)to50%ofthediskspace.Theresultisthatsmallfiles

arebeingstoredintheMFTandnotasseparatefilesintheNTFS.Thishelpsalotbecausewehavethousands

ofsmallfiles.

Procedure

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 25 26

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