Uppdatera DNS

DNS bytyder Domain Name System or Domain Name Server och är ett system som sparar information relaterat till domännamn på nätverk, t ex internet.

Det sägs att det lättaste sättet att "ta ner" hela internet vore att förstöra de 8-10 master DNS servrar som finns i världen. DNS fungerar så att data bara är giltig i en viss tid och måste uppdateras konstant för att fungerar. Men denna artikeln ska inte handla om cyberterrorism utan några korta tips om vad du kan göra för att se till att du har ett färskt DNS-register på din egen dator.

Ändra host fil
Detta kan vara en bra lösning om du har problem med att hitta en speciell sida som du vet fungerar. Man mappar på så sätt ip mot domännamn direkt på sin egen dator.

Denna fil hittas här:
c:\WINDOWS\system32\drivers\etc\hosts

Lägg till namn och ip enligt följande:
www.dindoman.com 123.133.123.132

Obs IP-numret är påhittat i exemplet.

Rensa minnet
En annan grej att testa är att i CMD promten skriva "ipconfig /flushdns"

Se vad som finns i DNS-minnet
För att kontrollera vad som finns i minnet kör man "ipconfig /displaydns"

Comments

[…] Man använde sig av ett stort så kallat zombie-nät (övertagna datorer) och riktade överbelastningstrafik mot de viktiga DNS-servrarna. Vi nämnde förresten för ett år sen att detta är det smartaste sättet att försöka ta ner hela internet. […]

Nice post. Thanks for sharing.

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