Slide 1 Announcement Grading adjusted –10% participation and two exams 20% each Newsgroup up Assignment upload webpage up Homework 1 will be released over the weekend Slide…

Slide 1 Review What is security: history and definition Security policy, mechanisms and services Security models Slide 2 Outline Overview of Cryptography Classical Symmetric…

Slide 1 Security and Routing Source routing and tunnels Routing security –Protocol –Content IGP routing BGP routing Nothing new here: –Going on for years on the telephone…

Slide 1 WEEK 5-6 Cryptography & Public Key Infrastructure Slide 2 Cryptography Overview Is – A tremendous tool – The basis for many security mechanisms Is not –…

Slide 1 Slide 2 Announcement T-lab accounts should have been set up Assignment upload webpage up Homework 1 released, due in two weeks Slide 3 Review What is security: history…