1 / 6

Introduction to

I. Introduction to. ASA Security Appliances and Basic Configuration Tasks. 1. 1. ASA Product Family. 3. 4. Cisco ASA Configuration HIS CHAPTER INTRODUCES THE FEATURES AND HARDWARE OF CISCO’S ADAPTIVE SECURITY APPLIANCE (ASA) PRODUCT LINE. THE TOPICS INCLUDE

pearly
Download Presentation

Introduction to

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. I Introductionto ASASecurity AppliancesandBasic ConfigurationTasks 1

  2. 1 ASAProductFamily 3

  3. 4 CiscoASAConfiguration HISCHAPTERINTRODUCESTHEFEATURESANDHARDWAREOFCISCO’SADAPTIVESECURITY APPLIANCE(ASA)PRODUCTLINE.THETOPICSINCLUDE ▼FEATURESOFTHEASA,INCLUDINGTHEOPERATINGSYSTEM,SECURITYALGORITHM, REDUNDANCY,ANDOTHERS T THEHARDWAREOFTHEASAPRODUCTLINE,INCLUDINGTHEMODELS,SUPPORTED HARDWAREMODULES(CARDS),ANDLICENSING ▲ ASAFEATURES CISCO’SASAISASETOFSTATEFULSECURITYAPPLIANCESRANGINGFROMTHEMODEL5505,WHICH ISDESIGNEDFORSMALLOFFICE,HOMEOFFICE(SOHO)ENVIRONMENTS,TOTHE5580,WHICHIS DESIGNEDFORLARGEENTERPRISENETWORKSANDISPSITES.ALLOFTHESEPRODUCTSUSETHESAME OPERATINGSYSTEMANDMANAGEMENTTOOLS,EASINGYOURIMPLEMENTATIONANDMONITORING TASKS.BECAUSEALLTHESECURITYAPPLIANCESUSETHESAMEOPERATINGSYSTEM,THEMAJORDIF- FERENCESBETWEENTHEMODELSPRIMARILYCONCERNSCALABILITYANDPERFORMANCE. THEASAFAMILYOFPRODUCTS(ANDTHEIROLDERSIBLINGS,THEPIXPRODUCTS)CANBESTBE DESCRIBEDASHYBRIDFIREWALLS.CISCO,HOWEVER,DOESNOTLIKETOUSETHETERM“FIREWALL”TO DESCRIBETHEASAANDPIXPRODUCTFAMILY.INSTEAD,CISCOPREFERSUSINGTHETERM“SECURITY APPLIANCE,”MAINLYBECAUSETHEASAPRODUCTSANDTHEPRODUCTSTHEYREPLACED,THEPIX PRODUCTS,ARENOTJUSTSTATEFULFIREWALLS;THEYALSOSUPPORTMANYOTHERSECURITYFEATURES, INCLUDING SECURE,REAL-TIME,PROPRIETARYOPERATINGSYSTEM STATEFULFIREWALLUSINGTHECISCOSECURITYALGORITHM(SA) SEQUENCENUMBERRANDOMIZATION(SNR)TOSECURETCPCONNECTIONS CUT-THROUGHPROXY(CTP)FORAUTHENTICATINGTELNET,HTTP,ANDFTPCONNECTIONS DEFAULTSECURITYPOLICIESTOENSUREMAXIMUMPROTECTION,ASWELLASTHEABILITY TOCUSTOMIZETHESEPOLICIESANDBUILDYOUROWNPOLICIES VIRTUALPRIVATENETWORK(VPN)ABILITIES:IPSEC,SSL,ANDL2TP INTRUSIONDETECTIONANDPREVENTIONSYSTEMS(IDSANDIPS) ADDRESSTRANSLATIONUSINGDYNAMICANDSTATICNETWORKANDPORTADDRESS TRANSLATION STATEFULREDUNDANCYOFCONNECTIONSANDVPNSBETWEENTWOSECURITYAPPLIANCES VIRTUALIZATIONOFPOLICIESUSINGCONTEXTS ▼ ■ ■ ■ ■ ■ ■ ■ ■ ▲ THISISJUSTASMALLLISTOFSOMEMAJORFEATURESOFTHESECURITYAPPLIANCES.THEFOL- LOWINGSECTIONSPROVIDEANOVERVIEWOFSOMEOFTHESEFEATURES.THEFEATURESTHATIDON’T BRIEFLYCOVERINTHISCHAPTERARECOVEREDINSUBSEQUENTCHAPTERS.

  4. 5 Chapter1: ASAProductFamily NOTETHROUGHOUTTHEBOOK,WHENEVERTHETERMS“SECURITYAPPLIANCE”OR“APPLIANCE”AREUSED,THEY REFERTOBOTHTHEASAANDPIXPRODUCTSUNLESSOTHERWISENOTED. OPERATINGSYSTEM THEOPERATINGSYSTEM(VERSION7ANDLATER)YOUCURRENTLYSEEONTHEASAAPPLIANCESAND ONTHEPIX515ANDHIGHERAPPLIANCESISBASEDONTHEPIXFINESSEOPERATINGSYSTEM (FOS).THEFOSISAPROPRIETARY,STAND-ALONEOPERATINGSYSTEM.ITIMPLEMENTSTHEAC- TUALSECURITYFUNCTIONSTHATTHESECURITYAPPLIANCEHARDWAREPERFORMS.INTHISSENSE,IT ISSOMEWHATSIMILARTOTHEINTERNETWORKOPERATINGSYSTEM(IOS)OFCISCOROUTERSAND SWITCHES,ORWHATTHEMICROSOFTWINDOWSXPORLINUXOPERATINGSYSTEMSARETOPCS. CISCONOLONGERUSESTHETERMFOSTODESCRIBETHEOPERATINGSYSTEM,THOUGH.STARTING INVERSION7ANDLATER,CISCOREFERSTOTHESECURITYAPPLIANCEOPERATINGSYSTEMASJUSTTHE “OPERATINGSYSTEM.” NOTEEVENTHOUGHCISCO’SPIXAPPLIANCESARENOLONGERFORSALE,WHICHCISCODENOTESASEND- OF-SALE(EOS),THEPIX515SANDHIGHERSUPPORTTHESAMEOPERATINGSYSTEMASTHEASAS.THEMAIN DIFFERENCEBETWEENTHEPIXSANDASASISTHATTHELOWER-ENDPIX501AND506EDONOTSUPPORTVERSION 7ANDLATEROFTHEOS,ANDNONEOFTHEPIXSSUPPORTSSSLVPNS.THISBOOKFOCUSESONTHEUSEOFTHE ASAS;HOWEVER,THETOPICSDISCUSSEDCANBEEQUALLYAPPLIEDTOTHEPIXSINMOSTSITUATIONS. FIREWALLAPPLICATIONS SOMEFIREWALLPRODUCTSRUNONTOPOFANOPERATINGSYSTEM;THESESOLUTIONSARECOMMONLY CALLEDFIREWALLAPPLICATIONS.ONEDISADVANTAGETHATFIREWALLAPPLICATIONSHAVECOMPARED WITHAPROPRIETARYOPERATINGSYSTEMISTHATTHEFIREWALLVENDORMUSTDEALWITHTWOSOFT- WAREPRODUCTSINCREATINGAFIREWALL:THEOPERATINGSYSTEMANDTHEFIREWALLAPPLICATION. THISPROCESSCANOFTENLEADTOALESSSECURESYSTEM.THISISESPECIALLYTRUEWHENYOUCON- SIDERALLTHESECURITYTHREATSTHATHAVEBEENDIRECTEDSPECIFICALLYATUNIXANDMICROSOFT OPERATINGSYSTEMS. ANEXAMPLEOFAFIREWALLPRODUCTTHATUSESFIREWALLAPPLICATIONSISCHECKPOINT.THISIS NOTTOSAYTHATCHECKPOINT’SFIREWALLISAWORSESOLUTIONTHANAFIREWALLPRODUCTTHATUSES APROPRIETARYOPERATINGSYSTEM.HOWEVER,AFIREWALLVENDORLIKECHECKPOINTWILLHAVETO DOMANYMORETHINGSTOENSURETHATTHEFIREWALLAPPLICATIONANDOPERATINGSYSTEMPROVIDE ASECURESOLUTION.(NOTETHATCHECKPOINT’SNEXT-GENERATIONPRODUCT,SECUREPLATFORM1,IS MOVINGAWAYFROMTHISAPPROACHANDMOVINGTOWARDANINTEGRATEDSOLUTION.) THEMAINPROBLEMWITHAFIREWALLAPPLICATIONSOLUTIONISTHATTHEVENDORNOTONLYHAS TOPROVIDEASECUREFIREWALLAPPLICATION,BUTMUSTALSOSECURETHEOPERATINGSYSTEMITRUNS ON.HOWEVER,FIREWALLAPPLICATIONSDOPROVIDETWOADVANTAGES: THEYTENDTOBEEASYTOINSTALLANDMAINTAIN. THEYRUNONAWIDEVARIETYOFPC/SERVERPLATFORMS. ▼ ▲

  5. 6 CiscoASAConfiguration PROPRIETARYOPERATINGSYSTEM PROPRIETARYOPERATINGSYSTEMSPROVIDEASECURITYADVANTAGEOVERFIREWALLAPPLICATIONS—A PROPRIETARYOPERATINGSYSTEMVENDORHASTOBECONCERNEDABOUTONLYONESYSTEM,INSTEAD OFTWO,INPROVIDINGASECUREFIREWALLSOLUTION.ANOTHERHUGEADVANTAGEOFPROPRIETARY OPERATINGSYSTEMSISSCALABILITY.BECAUSEAPROPRIETARYOPERATINGSYSTEMCANBECUSTOM- IZEDTOASPECIFICHARDWAREPLATFORM,THISFIREWALLSYSTEMCANPROVIDEEXTREMELYFASTPACK- ETFILTERINGABILITIESANDSECURITYCAPABILITIES. OFF-THE-SHELFOPERATINGSYSTEMSLIKEUNIXANDMICROSOFTWINDOWSAREGENERAL- PURPOSEOPERATINGSYSTEMSTHATWEREDEVELOPEDTOPERFORMMANYTASKS,NOTALLOFWHICH AREPERFORMEDATANOPTIMALLEVEL.USINGAGENERALOPERATINGSYSTEMDECREASESTHEPER- FORMANCEOFTHEPACKETFILTERINGANDFIREWALLFUNCTIONSOFTHEFIREWALLAPPLICATION.TO PROVIDEFORSCALABILITY,YOUMUSTLOADYOURFIREWALLAPPLICATIONONVERYEXPENSIVESERVER PLATFORMS. USINGAPROPRIETARYOPERATINGSYSTEMINAFIREWALLSOLUTIONALSOMAKESITMUCHMORE DIFFICULTFORHACKERSTOPENETRATETHEFIREWALL.ATTACKERSAREFAMILIARWITHTHEFUNCTIONSOF COMMONOPERATINGSYSTEMSLIKEUNIXANDMICROSOFTPRODUCTS,WHICHMAKESITALITTLEBIT EASIERFORTHEMTOATTACKTHEFIREWALLAPPLICATION.HOWEVER,WHENVENDORSUSEAPROPRI- ETARYOPERATINGSYSTEMTOIMPLEMENTTHEIRFIREWALLSOLUTION,ANATTACKERWILLHAVELITTLE ORNOKNOWLEDGEABOUTTHEFUNCTIONSANDPROCESSESOFTHEOPERATINGSYSTEM,MAKINGIT VERYDIFFICULTFORTHEATTACKERTOCOMPROMISETHEFIREWALLSOLUTION. USINGAPROPRIETARYOPERATINGSYSTEMHASSOMEDISADVANTAGES.FIRST,BECAUSETHEOP- ERATINGSYSTEMISPROPRIETARY,YOURSECURITYPERSONNELWILLHAVETOLEARNTHENEWSYSTEM. MANYOFYOURPERSONNELWILLALREADYHAVEEXPERIENCEWITHUNIXORMICROSOFTWINDOWS, ANDTHUSTHEIRLEARNINGCURVEINIMPLEMENTINGTHESOLUTIONWILLBESHORTENED. NOTEWHENYOUAREUSINGANUNDERLYINGPROPRIETARYOPERATINGSYSTEMSUCHASCISCO’SSECURITY APPLIANCES,THEADMINISTRATORISUNABLETOINTERACTWITHTHEUNDERLYINGOS. ALSO,BECAUSEFIREWALLAPPLICATIONSAREDEVELOPEDFORASPECIFICOPERATINGSYSTEM PLATFORMLIKEUNIXORMICROSOFTWINDOWS,YOURSECURITYPERSONNELWILLALREADYBEFA- MILIARWITHTHEINTERFACETHATISEMPLOYEDBYTHEFIREWALL.AGOODEXAMPLEOFTHISIS CHECKPOINT’SFIREWALLSOLUTION—ITHASAVERYGOOD,INTUITIVEGUIINTERFACE,WHICHMAKES CONFIGURATIONEASYANDALSOREDUCESTHELIKELIHOODOFMAKINGMISTAKESANDOPENINGUP UNINTENDEDHOLESINYOURFIREWALLSYSTEM. HEREARESOMEOFTHEMAINADVANTAGESOFUSINGPROPRIETARYOSSFORFIREWALLS: THEYTENDTOBEMORESECURETHANFIREWALLAPPLICATIONS. THEYPROVIDEFORBETTERSCALABILITYANDPACKETFILTERINGSPEEDSBECAUSETHE OPERATINGSYSTEMISCUSTOMIZEDDIRECTLYTOWORKWITHSPECIFICHARDWARE. ▼ ▲ ASAMANAGEMENT BECAUSETHESECURITYAPPLIANCESUSETHESAMEOPERATINGSYSTEM,THECONFIGURATIONOF CISCO’SASASANDPIXSISSIMPLIFIED.YOUHAVEACHOICEOFTHREEMETHODSTOCONFIGURE YOURSECURITYAPPLIANCE:

  6. Thank you for evaluating Wondershare PDF Editor. You can only convert 5 pages with the trial version. To get all the pages converted, you need to purchase the software from: http://cbs.wondershare.com/go.php?pid=1140&m=db

More Related