PPT-CSCI-1680 Network Layer:

Interdomain Routing Based partly on lecture notes by Rob Sherwood David Mazières Phil Levis Rodrigo Fonseca John Jannotti Today Last time IntraDomain Routing IGP RIP distance vector. Network Layer:. Inter-domain Routing. Based partly on lecture notes by Rob Sherwood, David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Today. Last time: Intra-Domain Routing (IGP). RIP distance vector. Link Layer Reliability. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Administrivia. Snowcast. due on Friday. Homework I out on Thursday. GitHub. Rodrigo Fonseca (. rfonseca. ). http://www.cs.brown.edu/courses/cs168. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. , Peterson & Davie. Cast. Instructor: Rodrigo Fonseca (. John . Jannotti. (. jj. ). http://www.cs.brown.edu/courses/cs168. Based partly on lecture notes by . Rodrigo Fonseca, David . Mazières. , Phil . Levis, . Peterson & Davie. Cast. Instructor: . John . The UNIX System. Unit V. Permissions. Permissions. all access to directories and files is controlled. UNIX uses discretionary access control (DAC) model . each directory/file has owner. owner has discretion over access control details. Transport Layer II. Data over TCP. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Last Class. Introduction to TCP. Header format. Connection state diagram. Shenker. and Mike Freedman. Rodrigo Fonseca. Today’. s Lecture. Classes of attacks. Basic security requirements. Simple cryptographic methods. Cryptographic toolkit (Hash, Digital Signature, …). Shenker. and Mike Freedman. Rodrigo Fonseca. Today’. s Lecture. Classes of attacks. Basic security requirements. Simple cryptographic methods. Cryptographic toolkit (Hash, Digital Signature, …). 4. 1 Introduction. 4.2 Virtual circuit and datagram networks. 4.3 What’s inside a router. 4.4 IP: Internet Protocol. Datagram format. IPv4 addressing. ICMP. IPv6. 4.5 Routing algorithms. Link state. Intra-domain Routing. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Today. Intra-Domain Routing . Next class: Inter-Domain Routing. Routing. Routing is the process of updating forwarding tables. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Last time. Physical layer: encoding, modulation. Link layer framing. Today. Getting frames across: reliability, performance. Inter-. domain Routing. Based partly on lecture notes by. Rob Sherwood, David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Administrivia. Midterm moved up from 3/17 to 3/15. IP due on Friday. Link Layer I. Based partly on lecture notes by David . Mazières. , Phil Levis, John . Jannotti. Rodrigo Fonseca. Administrivia. Snowcast. milestone today. “Last commit before midnight”. Schedule your milestone meeting. Ion . Stoica. , Scott . Shenker. , Joe . Hellerstein. Rodrigo Fonseca. Today. Overlay networks and Peer-to-Peer. Motivation. Suppose you want to write a routing protocol to replace IP. But your network administrator prevents you from writing arbitrary data on your network.