Sökning: "dns security"

Hittade 2 uppsatser innehållade orden dns security.

1. 1. Information Hiding in Networks : Covert Channels

   Kandidat-uppsats, Högskolan i Skövde/Institutionen för datavetenskap

   Författare :Rubén Ríos del Pozo; [2007]
   Nyckelord :Network Security; Covert Channels; Bandwidth; Detection; Covert TCP; ICMP Ping Tunnel; HTTP Firepass; Ozyman DNS Tunnel;

   Sammanfattning : Covert Channels have existed for more than twenty years now. Although they did not receive a special attention in their early years, they are being more and more studied nowadays. LÄS MER

3. 2. Denial of Service on SIP VoIP infrastructures using DNS flooding

   Magister-uppsats, Blekinge Tekniska Högskola/Sektionen för Teknik (TEK)

   Författare :Ge Zhang; [2007]
   Nyckelord :datavetenskap; computer science - electronic security; computer science - networks and communications; computer science - distributed computing; sip; voip; denial of service;

   Sammanfattning : A simple yet effective Denial of Service (DoS) attack on SIP servers is to flood the server with requests addressed at irresolvable domain names. In this paper we evaluate different possibilities to mitigate these effects and show that over-provisioning is not sufficient to handle such attacks. LÄS MER