{"id":4251,"date":"2020-10-30T19:57:46","date_gmt":"2020-10-30T18:57:46","guid":{"rendered":"https:\/\/webhosting.de\/softwarefirewall-oder-hardwarefirewall\/"},"modified":"2020-10-30T19:57:46","modified_gmt":"2020-10-30T18:57:46","slug":"programvara-brandvaegg-eller-hardvarubrandvaegg","status":"publish","type":"post","link":"https:\/\/webhosting.de\/sv\/softwarefirewall-oder-hardwarefirewall\/","title":{"rendered":"programvarubrandv\u00e4gg eller h\u00e5rdvarubrandv\u00e4gg"},"content":{"rendered":"

Brandv\u00e4ggar av mjukvara eller h\u00e5rdvara - skillnader och till\u00e4mpningsomr\u00e5den<\/p>\n

B\u00e5da alternativen ger skydd f\u00f6r din egen dator och det tillh\u00f6rande n\u00e4tverket. I praktiken anv\u00e4nds vanligtvis b\u00e5da alternativen tillsammans, \u00e4ven i privata till\u00e4mpningar. B\u00e5da l\u00f6sningarna, b\u00e5de via h\u00e5rdvara och via den programvara som ska installeras, har alltid en f\u00f6rseglande effekt. Anslutningar b\u00f6r d\u00e4rf\u00f6r kontrolleras och vid behov blockeras f\u00f6r att f\u00f6rhindra obeh\u00f6rigt intr\u00e5ng i n\u00e4tverket.<\/p>\n

Vad exakt \u00e4r en Brandv\u00e4gg<\/a>?<\/p>\n

Brandv\u00e4ggen \u00e4r ett extra s\u00e4kerhetssystem som inte ska f\u00f6rv\u00e4xlas med antivirusprogram p\u00e5 datorn. Medan den senare ska identifiera och isolera skadliga program \u00f6vervakar brandv\u00e4ggen anslutningar samt utg\u00e5ende och inkommande data. Uppgifter<\/a> inom n\u00e4tverket. Den integreras som ett extra system mellan datorn och Internet\/n\u00e4tverket. En brandv\u00e4gg kan bland annat f\u00f6rhindra att obeh\u00f6riga personer tar sig in i n\u00e4tverket och p\u00e5 s\u00e5 s\u00e4tt f\u00e5r tillg\u00e5ng till datorn och dess data. <\/p>\n

Dessutom f\u00f6rhindras \u00f6verf\u00f6ring av obeh\u00f6riga datapaket, t.ex. skadliga \"maskar\". I praktiken \u00e4r en brandv\u00e4gg till och med anv\u00e4ndbar n\u00e4r det g\u00e4ller utg\u00e5ende data. H\u00e4r f\u00f6rhindrar den till exempel att en dator som identifierats med skadlig kod skickar data till andra datorer i n\u00e4tverket. Detta sker vanligtvis utan att anv\u00e4ndaren vet om det, eftersom skadlig kod initierar dessa data\u00f6verf\u00f6ringar p\u00e5 egen hand. En brandv\u00e4gg kan d\u00e4rf\u00f6r f\u00f6rhindra spridning av maskar och liknande.<\/p>\n

Skillnader mellan en mjukvarubrandv\u00e4gg och en h\u00e5rdvarubrandv\u00e4gg<\/p>\n

F\u00f6r att belysa skillnaderna m\u00e5ste man f\u00f6rst reda ut skillnaderna mellan begreppen \"programvara\" och \"h\u00e5rdvara\". H\u00e5rdvara definieras som elektroniska och\/eller mekaniska produkter och komponenter som anv\u00e4nds tillsammans med annan teknik f\u00f6r att s\u00e4kerst\u00e4lla deras funktionalitet. H\u00e5rdvara existerar allts\u00e5 \"faktiskt\" i den meningen att den kan ber\u00f6ras, skruvas loss och unders\u00f6kas. Programvara, \u00e5 andra sidan, \u00e4r program som installeras p\u00e5 datorn och som best\u00e5r av data och otaliga rader av kod. De kan inte r\u00f6ras, men de l\u00e5ser upp funktioner i datorn vars grund \u00e4r h\u00e5rdvaran. En h\u00e5rdvarubaserad brandv\u00e4gg \u00e4r d\u00e4rf\u00f6r en mekanisk eller elektronisk enhet, medan brandv\u00e4ggen installeras som programvara p\u00e5 datorn. I praktiken kan b\u00e5da varianterna kombineras.<\/p>\n

Vad g\u00f6r mjukvaru- och h\u00e5rdvarubrandv\u00e4ggen?<\/p>\n

Programbrandv\u00e4ggen kontrollerar datatrafiken mellan n\u00e4tverket och datorn. Den kan ocks\u00e5 anv\u00e4ndas f\u00f6r att st\u00e4lla in olika undantag f\u00f6r program, frig\u00f6ra portar eller bekv\u00e4mt \u00f6vervaka data p\u00e5 datorn i realtid. P\u00e5 s\u00e4tt och vis \u00f6vervakar en mjukvarubrandv\u00e4gg ett n\u00e4tverk, n\u00e4mligen det som datorn anv\u00e4nder f\u00f6r att komma \u00e5t n\u00e4tverket. Internet<\/a> f\u00f6r att kunna ansluta. H\u00e5rdvarubrandv\u00e4ggen d\u00e4remot installeras p\u00e5 en extern enhet\/ett externt system och \u00f6vervakar i praktiken tv\u00e5 n\u00e4tverk samtidigt. Den \u00f6vervakar datatrafiken mellan det privata n\u00e4tverket och brandv\u00e4ggen och samtidigt trafiken mellan brandv\u00e4ggen och det \u00f6verordnade n\u00e4tverket. En n\u00e4rmare titt p\u00e5 begreppet visar att en h\u00e5rdvarubrandv\u00e4gg snarare \u00e4r en programvara som inte \u00e4r installerad p\u00e5 sj\u00e4lva datorn utan p\u00e5 en extern enhet.<\/p>\n

I praktiken finns den f\u00f6renklade h\u00e5rdvarubrandv\u00e4ggen i hemmet vanligtvis i den klassiska routern. Moderna routrar har en fungerande brandv\u00e4gg som fungerar enligt ovan n\u00e4mnda praxis. Samtidigt b\u00f6r dock en brandv\u00e4gg installeras p\u00e5 datorn. \u00c4ldre modeller av DSL-modem m\u00e5ste fortfarande klara sig utan denna integrerade h\u00e5rdvarubrandv\u00e4gg. Industriella och kommersiella kunder som har s\u00e4rskilt k\u00e4nsliga data i sina n\u00e4tverk v\u00e4ljer ibland en extra l\u00f6sning i form av h\u00e5rdvara eller ytterligare serverskydd. Kombinationen av en integrerad brandv\u00e4gg i routern och en extra installerad programvara p\u00e5 datorn \u00e4r d\u00e4remot helt tillr\u00e4cklig f\u00f6r privata anv\u00e4ndare. F\u00f6retagsn\u00e4tverk b\u00f6r under vissa omst\u00e4ndigheter s\u00f6ka ytterligare skydd och en h\u00e5rdvarubrandv\u00e4gg som \u00e4r skr\u00e4ddarsydd f\u00f6r deras behov, och r\u00e5dfr\u00e5ga en expert.<\/p>","protected":false},"excerpt":{"rendered":"

Software- oder Hardwarefirewall – Unterschiede und Einsatzgebiete Eine Absicherung f\u00fcr den eigenen PC und das damit verbundene Netzwerk bieten beide M\u00f6glichkeiten. In der Praxis werden, auch im privaten Anwendungsbereich, normalerweise beide Optionen erg\u00e4nzend zueinander eingesetzt. Immer haben beide L\u00f6sungen, sowohl via Hardware als auch \u00fcber die zu installierende Software, einen abschottenden Effekt. Verbindungen sollen also 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