{"id":4250,"date":"2020-10-30T23:28:39","date_gmt":"2020-10-30T22:28:39","guid":{"rendered":"https:\/\/webhosting.de\/?p=4250"},"modified":"2020-10-30T23:28:39","modified_gmt":"2020-10-30T22:28:39","slug":"web-application-firewalls-sonicwall-barracuda-imperva","status":"publish","type":"post","link":"https:\/\/webhosting.de\/da\/web-application-firewalls-sonicwall-barracuda-imperva\/","title":{"rendered":"Firewalls til webapplikationer (sonicwall, barracuda, imperva)"},"content":{"rendered":"

Firewalls til webapplikationer (Web Application Firewalls - WAF) yder effektiv beskyttelse mod virus og malware af enhver art ved at overv\u00e5ge, filtrere og eventuelt blokere adgangen til dine egne applikationer. For at kunne v\u00e6lge det rigtige produkt blandt de mange softwarel\u00f8sninger, der findes p\u00e5 markedet, b\u00f8r man p\u00e5 forh\u00e5nd g\u00f8re sig klart, hvilken type forsvarssystem man \u00f8nsker at k\u00f8be (procedure i tilf\u00e6lde af angreb, logning af h\u00e6ndelser), og man b\u00f8r ogs\u00e5 afklare, hvilket trusselscenarie man vil g\u00e5 ud fra. <\/p>\n

Webapplikationsfirewalls (WAF'er) kan opdeles i 3 kategorier:
\n- WAF'er til forbindelsesmuligheder
\n- Cloud\/hybrid WAF
\n- integreret WAF-l\u00f8sning<\/p>\n

Sammenligning af de bedste webbaserede programfirewalls
\nDa systemerne l\u00f8bende s\u00f8ger efter us\u00e6dvanlige m\u00f8nstre i datatrafikken, er de ogs\u00e5 i stand til at opdage tidligere ukendte trusler, og de er enten installeret integreret p\u00e5 en proxyserver eller logisk og fysisk forbundet med applikationen ved gateways til webapplikationen. Desuden er det muligt at ops\u00e6tte softwaren som en selvst\u00e6ndig cloud-applikation.<\/p>\n

Kategori 1: Forbindelse Web Application Firewalls
\nWAF'er er en teknologi, der er let at konfigurere og implementere, som giver mulighed for permanent kontrol med hele systemet og straks udsender en alarmmelding i tilf\u00e6lde af angreb. Anvendelsesomr\u00e5derne findes generelt i mellemstore og store virksomheder. <\/p>\n

Den f\u00f8rste kandidat i denne kategori - Netscaler MPX fra Citrix - scorer med en SSL-datadata-gennemstr\u00f8mningskapacitet p\u00e5 op til 75 Gbps, hvilket g\u00f8r det muligt at behandle 1500 transaktioner pr. sekund (tps). Den faste pris p\u00e5 $4.000 for MPX 550 omfatter dog ikke opgraderinger, vedligeholdelse og supportomkostninger, s\u00e5 Netscaler MPX er is\u00e6r velegnet til SMV'er, der \u00f8nsker at udvide deres onlineVirksomhed<\/a> prim\u00e6rt via cloud-applikationer.<\/p>\n

WAF'en fra sikkerhedsfirmaet Barracuda imponerer med en bred vifte af kapaciteter med hensyn til den datam\u00e6ngde, der kan behandles, afh\u00e6ngigt af den valgte hardware. Barracuda 360-modellen kan f.eks. behandle op til 2000 tps, og den faste pris p\u00e5 $6.350 inkluderer et \u00e5rs ubegr\u00e6nsede opdateringer.<\/p>\n

Den n\u00e6ste kandidat p\u00e5 listen, Impervas SecureSphere, d\u00e6kker en bred vifte af ydelsesspecifikationer med en kapacitet p\u00e5 op til 10 Gbps, hvilket muligg\u00f8r transaktionshastigheder p\u00e5 mellem 440 og 9.000 tps. Med en startpris p\u00e5 $4.200 for X2010-modellen er SecureSphere en komplet websikkerhedsl\u00f8sning med alle funktioner. Firewall<\/a> System, der giver mulighed for h\u00f8j datatransmissionshastighed.<\/p>\n

ASM's F5 10200-model er skr\u00e6ddersyet til virksomheder, der bruger internettet intensivt, da det kun er her, at firewallen giver optimale \u00f8konomiske fordele. P\u00e5 grund af de permanente opdateringer af virussignaturer, registrering af bagd\u00f8re og andre nyttige funktioner er produktfordelen ved F5 h\u00f8jere end hos konkurrenterne, hvilket ogs\u00e5 afspejles i en \u00f8get anvendelseskapacitet.<\/p>\n

Endelig er SonicWall SRA 4600 fra Dell designet til sm\u00e5 og mellemstore virksomheder med et gennemsnitligt internetforbrug. SonicWall kr\u00e6ver dog installation af SonicWall Security System, men tilbyder ogs\u00e5 gadgets som f.eks. bagd\u00f8rskontrol.<\/p>\n

Kategori 2: Cloud\/hybrid WAF'er
\nCloud og Hybrid<\/a> WAF'er deles enten mellem kundevirksomheden og WAF-tjenesteudbyderen i henhold til et delingsprincip, eller WAF'en anvendes som et eksternt sikkerhedssystem. Da der ikke er nogen hardwareomkostninger, er cloud WAF'er budgetm\u00e6ssigt attraktive, da de d\u00e6kker alle forretningsaktiviteter ligesom deres \"jordbaserede\" modstykker. <\/p>\n

WAF'en fra Incapsula, en virksomhed, der specialiserer sig i online sikkerhedsl\u00f8sninger, er en \u00e6gte cloud-l\u00f8sning, der underst\u00f8ttes af 25 globale datacentre. Systemet beskytter mod DoS-angreb (denial-of-service), og derudover er der mange v\u00e6rkt\u00f8jer til r\u00e5dighed uden ekstra omkostninger. Startprisen p\u00e5 $300 for basisversionen afh\u00e6nger af abonnementsperioden og antallet af sk\u00e6rmbilleder, der skal beskyttes.<\/p>\n

For dem, der foretr\u00e6kker en hybridvariant, er WAF'en fra Qualys det rigtige valg. Beslutningstagere, der er virtuelt integreret i det lokale IT-milj\u00f8, kan drage fordel af ledelses- og internetperspektiver i en s\u00e6rlig oversigtstilstand. For maksimalt 100 applikationer er lejeprisen $1.995 afh\u00e6ngigt af abonnementsperioden. <\/p>\n

Kategori 3: Integrerede WAF-l\u00f8sninger
\nSoftwaren \"ModSecurity\" er den eneste profill\u00f8sning i kategorien Integrerede WAF'er. Som en open source-variant, der er integreret i Trustwave WAF-programmet, tilbyder systemet individuelt justerbar beskyttelse mod cyberangreb af enhver art. Firewallen g\u00f8r det muligt at konfigurere individuelle plausibilitetsregler, men der kr\u00e6ves omfattende ekspertviden for at parametrisere systemet. En enkelt licens kan f\u00e5s fra $495 afh\u00e6ngigt af det \u00f8nskede antal licenser og abonnementets varighed.<\/p>","protected":false},"excerpt":{"rendered":"

Firewalls f\u00fcr Web-Applikationen (englisch: Web application firewalls – WAF) stellen durch das \u00dcberwachen, Filtern und eventuelle Blockieren des Zugriffs auf eigene Applikationen einen wirksamen Schutz gegen Viren und Schadware aller Art da. Um aus der Vielzahl der am Markt erh\u00e4ltlichen Software-L\u00f6sungen das richtige Produkt ausw\u00e4hlen zu k\u00f6nnen, sollte man sich bereits im Vorfeld \u00fcber die 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