SonicWALL Email Security User guide

SonicWall™EmailSecurity9.1

UserGuide

SonicWall<ProductName><Version><GuideType>

Contents

ThisGuide............................................... ..........................3

AboutthisGuide........................

................................ .............. 3

GuideConventions..

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JunkBoxManagement...............................

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LoggingIntoYourJunkBox.............

............... ................................. 4

JunkBox

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SimpleSearchQueries .....................

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AdvancedSearchFilters......

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Sorting............................................

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CustomizingtheDataTableFormat..............

............... ...................... 6

ManagingJunkBoxMessages.........

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JunkBoxSummary

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FrequencySettings...............................

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OtherSettings..............

................................ ...................... 8

Anti‐Spam....................................... .....

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SpamManagement ... ..................

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Anti‐SpamAggressiveness.

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GeneralSettings . ............... .................. .....

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CategorySettings ............... ......

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Languages.....

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AddressBooks............................

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UsingtheSearchField...

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AddingtotheAddressBook........................... ...........

..................14

DeletingfromtheAddressBook...........................

.......................... 15

Settings.......................

...................................................16

AddingaDelegate............................ ...................

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DeletingaDelegate ..........................

............... .................. ........ 17

Policy........

....................................................................18

AddaNewFilter..............................

................................ .......18

DeleteaFilter........

................................ .................. ............. 21

Reports&Monitoring ............. . ................ ....

.............................22

Dashboard.....................

.....................................................22

CustomizingandManagingDashboardCharts ...........................................

..23

Downloads ..... . . ................ ................ ........

.............. . . .........25

SonicWallSupport ........................

.............. . . . ................ .........26

AboutThisDocument......

........................................................... 27

Contents

SonicWallEmailSecurity9.1UserGuide

ThisGuide



ThisGuide

AboutthisGuide

WelcometotheSonicWall™EmailSecurityUserGuide.Thisdocumentprovidesinstructionsforbasic

configurationforusersoftheSonicWallEmailSecurityproduct,includingEmailSecurityappliances,theEmail

SecurityVirtualAppliance,andEmailSecuritySoftware.

Thedocumentcontentsinclude:

• Thischapter,ThisGuide ,providesageneraldocumentoverviewand

describestheconventionsused

withinthisguide.

• Chapter2,JunkBoxManagement,describeshowtoreviewandprocessemailmessagesthathavebeen

flaggedasspam,virus‐infected,organizationpolicyviolations,orphishing.

• Chapter3,Anti‐Spam,providesanoverviewandconfigurationinformationspecifictotheAnti‐Spam

feature.

• Chapter

4,Settings,allowsyoutoadddelegatestoyourJunkBox.

• Chapter5,Policy,describeshowtocreatefiltersinwhichyouspecifytheactionyouwantEmailSecurity

totakeonmessagesthatmeettheconditionsyoudefine.

• Chapter6,Reports&Monitoring,providesinformationonhowtoview

systemstatusandanotherother

EmailSecuritydatathroughtheReports&Monitoringoptionontheuserinterface.

• Chapter7,Downloads,reviewsthetoolsavailableforyoutodownloadtoenhanceyourspam‐blocking

capabilities.

• Chapter8,SonicWallSupport,descri beshowtorequestsupportfromSonicWallandwhatoptions

are

available.

Gotohttps://support.sonicwall.com/technical‐docu mentsforthelatestversionofthisguideaswellasother

SonicWallproductsandservicesdocumentation.

GuideConventions

Theconventionsusedinthisguideareasfollows:

GuideConventions

Convention Us e

Bold Highlightsdialogbox,window,andscreennames.Alsohighlights

buttons.Alsousedforfilenamesandtextorvaluesyouarebeing

instructedtotypeintotheinterface.

Italic Indicatesthenameofatechnicalmanual.Alsoindicatesemphasison

certain

wordsinasentence.Sometimesindicatesthefirstinstanceofa

significanttermorconcept.

SonicWallEmailSecurity9.1UserGuide

JunkBoxManagement



JunkBoxManagement

TheJunkBoxallowsyoutoreviewandprocessemailmessagesthathavebeenquarantinedintheJunkBox.

Throughanalysis,theseemai lshavebeenflaggedasspam,virus‐infected,policyviolations,orphishing

attempts.Afterreview,youcanunjunkafalselyidentifiedmessage.Whenyouunjunkanincomingm essage,

SecurityaddsthesenderofthemessagetoyourAllowedlistanddeliverstheemailtoyou.

Thischapterprovidesinformationaboutthefollowingtopics:

• LoggingIntoYourJunkBox

• JunkBox

• JunkBoxSummary

LoggingIntoYourJunkBox

WhenEmailSecuritydeterminesamessageisjunk,themessageisstoredinaJunkBoxontheEmailSecurity

serverandalertsyoubyemail.YoucanlogintoyourJunkBoxtoviewmessagesthatwerejunkedbyEmail

Security.

TologintoyourJunkBox,click

theVisitJunkBoxlinkintheJunkBoxSummaryemail.

SonicWallEmailSecurity9.1UserGuide

JunkBoxManagement



JunkBox

AfterclickingtheVisitJunkBoxlinkintheJunkBoxSummaryemail,youareautomaticallydirectedtotheJunk

BoxManagement>JunkBoxpage.Storedmessagescanbequicklysearched,sorted,andfiltered.Underthe

simplesearchfields,thesystemshowshowlongjunkedemailisretainedbeforeit

isdeleted.

SimpleSearch Queries

Toperformasimplesearch:

1EnterthetextyouwanttosearchforintheSimplesearchfield.

Surroundsentencefragmentswithquotes(forexample:“lookforme”).BooleanoperatorsAND,OR,and

NOTaresupported.

2 Selectthefieldtosearchonfromthedrop‐downmenu.

ChoosefromSubject,To,From,orUniqueMessage

ID.

NOTE:ManyofSonicWallEmailSecuritywindowsarepop‐upwindows;configureyourwebbrowserto

allowpop‐upsfromtheSonicWallEmailSecurityserver.

SonicWallEmailSecurity9.1UserGuide

JunkBoxManagement

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3 ClickonSearch.

Theresultsaredisplayedinthedatatable.

AdvancedSearchFilters

Advancedsearchfiltersareperformeddirectlyonthedatathat'sdisplayed.Selectthedownarrownexttothe

columntitletofilterthedata.Somecolumnsaresearchablebytypinginastringoftexttosearchon.Likewhen

usingthesimplequery,youcansearchonfragmentsbyusing

quotemarksandtheBooleanoperatorsAND,OR

andNOT.Othercolumnsallowyoutochooseoneormorefiltersfromalistofpre‐populatedoptions.Youcan

alsofiltermorethanonecolumnatatime.Theresultsofanyfilteringareimmediatelyshowninthedatatable.

Sorting

Thecolumnsinthedatatablecanbesortedinascendingordescendingorder.

Tosortacolumn:

1 Clickinthecolumnyouwanttosort.Asmallarrowheadappearsinthecolumn.Thearrowheadpointsup

toindicateascendingorderanddowntoindicatedescendingorder.

2 Clickinthecolumnagaintochangethedirectionofthearrowhead.Thedatarefreshesimmediatelyto

reflectthechoiceyoumade.

CustomizingtheDataTableFormat

Customizethetableformatbyusingthebuttonsatthetopofthetable.

Buttonname Definition

AddColumns SelectAddColumnstogetthedropdownmenu.Checktheboxforthe

datayouwanttoappearinthetable.Unchecktheboxtoremovethe

columnfromthetable.

ClearFilers Clearsany

filtersyousetduringanadvancedfilteringsearch.

SaveView Savestheviewyoucreatedafteraddingorremovingcolumns.

ResettoDefaultView Resetsthedatatablebacktothedefaultview.

Settings TakesyoutoAnti‐Spam>SpamManagementtocustomizethesettings

formanagingspaminyourJunkBox.SeeSpam

Managementformore

information.

SonicWallEmailSecurity9.1UserGuide

JunkBoxManagement

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ManagingJunkBoxMessages

DependingonhowyourEmailSecuri tyimplementationisconfigured,youmaybeablemanageyourownJunk

Box.Seethetablebelowforadescriptionofthebuttonsatthetopleftofthedatatable.

JunkBoxSummary

TheJunkBoxManagement>JunkBoxSummarypagecontainstheFrequencySettingsandOtherSettings

sectionsthatyouusetosetupmessagemanagementfortheJunkBox.IfAdheretosystemdefaultsischecked,

systemdefaultsarefollowed,andtheselectablesettingsaregrayedoutanddisabled.Toconfigure

yourown

settings,deselectthischeckbox.

FrequencySettings

Ifadheringtosystemdefaultsisdisabled,youcanchoosehowoftenyoureceivesummaryemailsaboutyour

junkbox.

Buttonname Definition

Delete Ifconfiguredtoallowusercontrol,thisdeletestheselectedmessages.

Selectonemessagebyclickingonit.Selectaseriesofmessagesby

clickingonthefirst

messageandthenshift‐clickingonthelastone.

Selectdisconnectedmessagesbycontrol‐clickingoneachoneyouwant.

ThenclickonDelete.

Unjunk Ifconfiguredtoallowusercontrol,thisallowsyoutoremoveavalid

emailmessagefromtheJunkBox.Selectonemessagebyclickingonit.



Selectaseriesofmessagesbyclickingonthefirstmessageandthen

shift‐clickingonthelastone.Selectdisconnectedmessagesbycontrol‐

clickingoneachoneyouwant.Thenclick ontheUnjunkbutton.

Refresh Refreshesthedatainthetable.

SonicWallEmailSecurity9.1UserGuide

JunkBoxManagement

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TodefineFrequencySettings:

1 ChoosetheFrequencyofsummariesfromthedropdownlist.Optionsrangefrom1or4hours;1,3,7or

14days;orNever.

2 SelecttheTimeofdaytosendsummary.YoucanselectAnytimeofdayorspecifyanhourtosendby

selectingWithin

anhourofandchoosingthehourfromthedropdownmenu.

3 SelecttheDayofweektosendsummary.YoucanselectAnydayoftheweekorselectSendsummary

onandspecifyaday.

4SpecifytheTimeZoneforthesystem.

5Scrolltothebottomofthepageand

selectApplyChangesifdone.

OtherSettings

Ifadheringtosystemdefaultsisdisabled,youcanconfiguretheparametersoftheJunkBoxSummaryemail.

TodefinetheOtherSettingsfortheJunkBoxSummary:

1 SelecttheLanguageofsummaryemailfromthedropdownlist.

2ChecktheboxtoenablePlainsummaryifyouwanttosendjunkboxsummarieswithoutgr aphics.

RefertoLogg ingIntoYourJunkBoxtoseeagraphicexampleoftheJunkBoxSummary.Thefollowing

imageshowsa

plainsummary:

3 SelectthetypeofinformationforyourSummariestoinclude.SelectAlljunkmessagesorOnlylikely

junk(hidedefinitejunk).

SonicWallEmailSecurity9.1UserGuide

JunkBoxManagement



4IfyouwanttoSendJunk BoxSummarytodelegates,checktheboxandtheyouwillnotreceiveit.

5 SelectApplyChanges.

SonicWallEmailSecurity9.1UserGuide

Anti‐Spam

EmailSecurityusesmultiplemethodsofdetectingspamandotherunwantedemail.Thischapterreviewsthe

configurationinformationforAnti‐Spam:

• SpamManagement

• Anti‐SpamAggressiveness

• Languages

• Anti‐SpamAggressiveness

SpamManagement

Bydefault,theAdheretoSystemDefaultscheckboxisselected.Toconfigureyourownsettings,deselectthis

checkbox.

Tomanagemessagesmarkedasdefinitespamorlikelyspam:

1NavigatetotheAnti‐Spam>SpamManagementpage.

SonicWallEmailSecurity9.1UserGuide

Anti‐Spam

2 ChoosetheactionformessagesmarkedasDefiniteSpam:

3ChosetheactionformessagesmarkedasLikelySpam.Usethesamedefinitionsasaboveandtagwith

uniquetextsuchas[LIKELY].

4 SelecttheAcceptAutomatedAllowedListcheckboxtoallowautomatedliststhatarecreate dbyUser

Profilesto

preventspam.Withthisfeatureenabled,UserProfilesanalyzetherecipientsofemailsfrom

membersofyourorganizationandautomaticallyaddedthemtoAllowedLists.

5 ClickApplyChangestosaveandapplychangestothisscreen.

Anti‐SpamAggressiveness

TheAnti‐Spam>Anti‐SpamAggressivenesspageallowsyoutotailorhowaggressivelytheEmailSecurity

productblocksspamtoyourmailbox.YoucanchecktheboxatthetopofthepagetoAdheretoSystemdefaults.

Response Effect

NoAction Noactionistakenformessages.

StoreinJunkBox

anddeleteafter

(defaultsetting)

TheemailmessageisstoredintheJunkBoxanddeletedafteran

adminspecifiedperiodoftime.Themessagecanbeunjunkedby

usersandadministratorswithappropriatepermissions.This

optionistherecommendedsetting.

TagWith Theemailistaggedwithaterminthesubject

line,forexample

[SPAM].Selectingthisoptionallowstheusertohavecontrolof

theemai landcanjunkitifitisunwanted.

NOTE:Configuringthispageis optional.

SonicWallEmailSecurity9.1UserGuide

Anti‐Spam

Genera l Settings

Usethefollowingsettingstospecify howstringentlyEmailSecurityevaluatesmessages:

TocustomizethespamblockingaggressivenessforGeneralSettings:

1SetGridNetworkAggressiveness.

TheGRIDNetworkAggressivenesstechniquedeterminesthedegreetowhichyouwanttousethe

collaborativedatabase.SelectingastrongersettingmakesEmailSecuritymoreresponsive

tootherusers

whomarkamessageasspam.

2SetAdversarialBayesianAggressiveness.

TheAdversarialBayesiantechniqueref erstoSonicWallEmailSecurity’sstatisticalenginethatanalyzes

messagesformanyspamcharacteristics.Thisisthehigh‐levelsettingfortheRulesportionofspam

blockinganditletsyouchoosewhereyou

wanttobeinthecontinuumofchoiceandvolumeofemail.

Thissettingdeterminesthethresholdforhowlikelyanemailmessageistobeidentifiedasjunkemail.

3 SelectApplyChanges.

CategorySettings

TheCategorySettingsallowyoutoselectthelevelofaggressivenessforspecificcategoriesofspam.Usethe

followingsettingstospecifythelevelofaggressivenes s:

Setting Description

Mi ldest Youreceivealargeamountofquestionableemailinyourmailbox.Thisisthelightest

levelofaggressiveness.

Mild Youarelikelytoreceivemore

questionableemailinyourmailboxandreceiveless

emailintheJunkBox.Thiscancauseyoutospendmoretimeweedingthrough

unwantedemailfromyourpersonalmailbox.

Medium YouacceptEmai l Security’sspam‐blockingevaluation.

Strong EmailSecurityrulesoutgreateramountsofspamforyou.Thiscancreateaslightly



higherprobabilityofgoodemailmessagesinyourJunkBox.

Strongest EmailSecurityheavilyfiltersoutspam.Thiscreatesanevenhigherprobabilityof

goodemailmessagesinyourJunkBox.

Setting Description

Mi ldest Thissettingallowsyoutoviewmostoftheemailmessagesthatcontaintermsthat

relatetothecategory.

Mild Thissettingallowsyoutobeabletoviewemailmessagesthatcontaintermsthat

relatetothecategory.

Medium ThissettingforcesEmailSecuritytotagemailmessageswiththiscontentasLikely

Junk.

Strong ThissettingmorelikelytagsemailmessageswiththiscontentasDefiniteJunk.

Strongest Thissettingtags

allemailmessageswiththiscontentasDefiniteJunk.

NOTE:YoucanselecttheStrongsettingformessagescontainingaspecificcategory,suchassexual

content,andaMildsettingforacategoryyoumaybelessconcernedabout,likebulkemails.

SonicWallEmailSecurity9.1UserGuide

Anti‐Spam

TocustomizethespamblockingaggressivenessforCategorySettings:

1 Selectthefollowingsettingsforeachofthesecategories:

• SetSexualContent.

• SetOffensiveLanguage.

• SetGetRichQuick.

• SetGambling.

• SetBulkEmails.

• SetImages.

2 SelectApplyChangestosavethesettings.

Languages

TheAnti‐Spam>LanguagespagegivesyoutheoptiontoAllowAll,BlockAll,orhaveNoOpiniononemail

messagesinvariouslanguages.Bydefault,theAdheretoSystemDefaultscheckboxisselectedandtheoptions

forcustomizingisgrayedout.Toconfigureyourownsettings,deselect

thischeckbox.

Tocustomizethelanguagesettings:

1Choseoneofthefollowingoptionsforeachlanguagelisted:

• AllowAll—Allowsallemai l messagesinalanguagewithoutanyscreening.

•BlockAll—Blocksallemailmessagesinalanguage.

•NoOpinion—AllowsemailmessagesinalanguagetobescreenedbyallfiltersinstalledinEmail

Security.

2 SelectApplyChangestosave

thesettings.

AddressBooks

UseAnti‐Spam>AddressBookstoalloworblockpeople,companies,oremaillistsfromsendingyouemail.This

pageshowsacompilationofallowedandblockedsendersfromyourorganization’slists,aswellaslistsprovided

bydefault.

UsingtheSearchField

Tosearchforanaddress:

1 SelecttheAllowedorBlockedtab.

2EnterallorpartoftheemailaddressintheSearchfield.

3Customizeyoursearchbyselectingorde‐selectingthePeople,Companies,Lists,Corporate,orPersonal

checkboxes.

NOTE:Someoftheentrieswereaddedbyyourorganization,andappearoneveryuser ’slist.Theseentries

areindicatedwithadimmedcheckbox.Youdonothaveaccessdeletethemfromyourlist.

SonicWallEmailSecurity9.1UserGuide

Anti‐Spam

4 ClickGotoperformthesearch.

AddingtotheAddressBook

ToaddPeople,Companies,orListstotheAddressBook:

1ToadditemstoyourAllowedlist,clicktheAllowedtab.ToadditemstoyourBlockedlist,clickthe

Blockedtab.

SonicWallEmailSecurity9.1UserGuide

Anti‐Spam

2 ClicktheAddbutton.TheAddItemswindowdisplays.

3Fromthedropdownmenu,selectthetypeofitemyouareadding.Theoptions arePeople,Companies,

orLists.

4IfyouselectedPeople,typetheemailaddressinthespaceprovided.Separatemultipleentriesbya

comma.

Ifyouselected

Companies,specifythedomainstoaddinthespaceprovided.

IfyouselectedLists,specifythemailingliststoaddinthespaceprovided.

5 ClickAddtofinishaddingtoyourlist.

DeletingfromtheAddressBook

TodeletePeople,Companies,orListstotheAddressBook:

1TodeleteitemsfromyourAllowedlist,clicktheAllowedtab.TodeleteitemsfromyourBlockedlist,click

theBlockedtab.

2 Clickthecheckboxnexttotheitemsyouwanttodelete.

3 ClicktheDeletebutton.

4Todeleteallitemsfromyourlist,clicktheDeleteAllbutton.You

willhavetoselectthetypeofitemyou

wanttodelete(People,Companies,Lists).Then,clickDeleteAll.

SonicWallEmailSecurity9.1UserGuide

Settings

TheSettingspageallowsyoutoadddelegatestoyourJunkBox.Delegatesarepeoplewhohavefullaccessto

yourpersonalJunkBox.Delegateshavetheavailabi litytochangeyourJunkBoxsettings,aswellasmanagethe

messagesinyourJunkBox.

Themostcommonuseofdelegatesmay

beforanadministrativeassistantthatactsasadelegatetotheCEOof

acompany.TheassistantmayneedtofrequentlyaccesstheCEO’semailmessages,thushavingaccesstothe

CEO’sJunkBoxandJunkBoxSettings.

Thischapterincludesthefollowingtopics:

• AddingaDelegate

• Deletinga

Delegate

AddingaDelegate

Toadda delegatetohaveaccesstoyourJunkBox:

1NavigatetotheSettings>Delegatespage.

2 ClicktheAddbutton.TheAddDelegatespagedisplays.

3Checktheboxbythenameofthedelegateinthelist,orsearchforaspecificemailaddressesbyentering

apartialaddressinthesearchfield.

SonicWallEmailSecurity9.1UserGuide

Settings

4 ClicktheAddDelegatebutton.TheselectedusersareaddedtoyourlistofDelegates.

DeletingaDelegate

ToremoveusersthatareconsidereddelegatesforyourJunkBox:

1NavigatetotheSettings>Delegatespage.

2Checktheboxnexttothedelegateyouwishtoremove.

3 ClicktheRemovebutton.Theselecteduser(s)areremovedfromyourlistofDelegates.

SonicWallEmailSecurity9.1UserGuide

Policy

PolicyManagementplaysakeyroleinevaluatingthreatsbyfilteringemailbasedonmessagecontentsand

attachments.YoucancreatepolicyfiltersinwhichyouspecifyanactionoractionsyouwantEmailSecurityto

takeonmessagesthatmeettheconditionsyoudefine.Forexample,youcanspecifywords

tosearchfor—a

productterm,forexample—incontent,senders,orotherpartsoftheemail.Afterfilteringforspecified

characteristics,youcanchoosefromalistofactionstoapplytothemessageanditsattachments.

Userscanonlydefineinboundfilters.Outboundfi ltersaremanagedbysystemadministrators.

Thischapter

includesthefollowingtopics:

• AddaNewFilter

• DeleteaFilter

AddaNewFilter

Toadda newfilter:

1NavigatetoPolicy>Filters.

NOTE:AnyofthepoliciesconfiguredinthePolicysectiontak eprecedenceoveranyentriesmadeinthe

AllowedList.

NOTE:Outboundfiltersaredisabledforusers.

SonicWallEmailSecurity9.1UserGuide

Policy

2 SelectAddNewFilter.



3TheEnablethisFiltercheckboxischeckedbydefault.Deselectthecheckboxtocreaterulesthatdonot

gointoeffectimmediately.

4 ChoosewhetherthefiltermatchesAlloftheconditionsorAnyoftheconditions.

• All—Causesemailtobefilteredonlywhenallofthe filterconditionsapply

(logicalAND)

• Any—Causesemailtobefilteredwhenanyoftheconditionsapply(logicalOR)

5 ChoosethepartsofthemessagetofilterintheSelectfield.Seethefollowingtableformoreinformation:

NOTE:Thefieldsinthewindowchangebasedontheactionyouchoose.

Select Definition

From Filterbythesender’sname

To/ Cc/Bcc&&RCPT FilterbythenamesintheTo,Cc,orBccfields

Subject Filterbywordsinthesubject

Body Filterbasedoninformationinthebodyoftheemail

SubjectorBody Filterbasedoninformation

inthesubjectandbodyoftheemail

MessageHeaders Filterbasedonheinformationinthemessageheader

SizeofMessage Filtermessagesbasedonthesizeofthemessage

CountryCode Filterbasedonsender’scountrycode

SonicWallEmailSecurity9.1UserGuide

Policy

6 ChoosethematchingoperationintheMatchingfield.Thechoicesformatchingoperationvarywiththe

messagepartbeingmatchedagainst.Thefollowingtabledescribesthematchingoperationsavailable.

7EnterthewordsorphrasethatyouwanttofilterintheSearchValuetextbox.

IfsearchingonaCountryCode,

thetextfieldisdisabledandthecountrycodedropdownmenuis

enabled.

Type Explanation Example

withspecificword Equivalentto“Findthewhole

wordonly”

Searchfortheword“Mail”fromthe

subjectline“ThisisMail”willmatch.

Searchfortheword“Mail”fromthe

subjectline“ThisisMailFrontier”will

not

match.

withoutspecificword Notequivalentto“Findthe

wholewordonly”

withspecificphrase Equivalentto“Findcomplete

phrase”

Searchforthewords“isMail”fromthe

subjectline“ThisisMail”willmatch.

Searchforthewords“isMail”fromthe

subjectline“ThisisMailFrontier”willnot

match.

withoutspecificphrase Not

equivalentto“Find

completephrase”

startswith Themessagepartbeing

searched forshouldstart

withthesearchvalue

Searchfor“This”fromthesubjectline

“ThisisMail”wi llmatch.

endswith Themessagepartbeing

searched forshouldendwith

thesearchvalue

Searchfor“isMail”fromthesubjectline

“This

isMail”willmatch.

is Onlythesearchcriteria

shouldexist(exactmatch)

Searchfortheword“Mail”fromthe

subjectline“ThisisMail”willnotmatch.

Searchfor“isMailfromthesubjectline“is

Mail”willmatch.

isnot Onlythesearchcriteria

shouldnotexist

Searchforthephrase“is

Mail”fromthe

subjectline“ThisisMailFrontier”will

match.

contains Substringsearch Searchfor“isMail”fromthesubjectline

“ThisisMail”wi llmatch.

doesnotcontain Substringsearchdoesnot

match

isgreaterthan testsforavaluegreaterthan

whatisspecified.

islessthan testsforavaluelessthan

whatisspecified.

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