Dear NANOGers, two birds in one email. 1. A reminder about our short, quick survey about uRPF/SAV; we received only 11 responses (many thanks!!), and only one from an edge AS... we would really appreciate more responses, so we'll be able to include this aspect in our research - simulations of all proposals mostly done, I'll probably post the draft paper here soon. So, please... fill it in: https://forms.gle/3rRtCTa2xk217tyd6 We really appreciate your help. 2. I've uploaded in my site a new, much extended version of my Internet inter-domain routing (BGP) security lecture, which I'll cover in my network security course in School of Computing University of Connecticut <https://www.linkedin.com/company/uconn-computer-science-and-engineering/>. It's a long presentation introducing inter-domain routing (BGP), its security concerns, different misrouting attacks and defenses (RPKI, ASPA, BGPsec, ...), as well as data-layer (IP) attacks, mainly IP spoofing, and defenses (uRPF and other Source Address Validation (SAV) techniques, including the BAR-SAV draft). See at https://sites.google.com/site/amirherzberg/presentations_1. It's under Creative Commons Attribution 4.0 international license, which basically allows use and modification, so hopefully will be of use to some of you. Comments, of course, are welcome. Thanks, Amir -- Amir Herzberg Comcast professor of Security Innovations, Computer Science and Engineering, University of Connecticut Homepage: https://sites.google.com/site/amirherzberg/home `Applied Introduction to Cryptography and Cybersecurity' textbook: https://sites.google.com/site/amirherzberg/crypto-cyber-book