M2-Internet 1 DNS: Domain Name System People: many identifiers: SSN, name, passport # Internet hosts, routers: IP address (32 bit) - used for addressing.
Polytechnic University Attacks 1 Attacks & Hacker Tools r Reconnaissance r Network mapping r Port scanning r Sniffing Before talking about defenses, need.
2: Application Layer1 Domain Name System (DNS) Computer Networking: A Top Down Approach, 4 th edition. Jim Kurose, Keith Ross Addison-Wesley, July 2007.
1 DNS,SMTP,MIME. 2 DNS: Domain Name System People: many identifiers: m SSN, name, Passport # Internet hosts, routers: m IP address (32 bit) - used for.
1 Lecture05: Application layer r Principles of network applications r DNS r P2P and DHT.
