ENEE457 Computer Systems Security: Fall 2021 Lecture Summaries

• Lecture 1 (8/30).
• Lecture 2 (9/1).
• Lecture 3 (9/8).
• We will cover the Hearbleed attack on OpenSSL and do a Class Exercise that will help you on Project 1 (9/13).
• Lecture 4 (9/15). See also Class Exercise which we will do together during the Discussion Session. See also Class Exercise Solutions.
• Lecture 5 (9/20).
• Lecture 6 (9/22).
• Lecture 7 (9/27). See also Class Exercise. See also Class Exercise Solutions.
• Lecture 8 (9/29).
• Lecture 9 (10/4). See also Class Exercise which we will do together during class. See also Class Exercise Solutions.
• Lecture 10 (10/6). See also Class Exercise which we will do together during class. See also Class Exercise Solutions.
• (10/11): We completed Lecture 10 and did the following class exercise Class Exercise. See also Class Exercise Solutions.
• Lecture 11 (10/13). See also Class Exercise which we will do together during class. See also Class Exercise Solutions.
• Lecture 12 (10/18). See also Class Exercise which we will do together during the Discussion Session. See also Class Exercise Solutions.
• Lecture 13 (11/1).
• Lecture 14 (11/3). See also Class Exercise which we will do together during the Discussion Session. See also Class Exercise Solutions.
• Lecture 15 (11/8). See also Class Exercise which we will do together during the Discussion Session. See also Class Exercise Solutions.
• Lecture 16 (11/10).
• In Class Lab 1 (11/15). Please download lab setup files from here. You will also need Sniffer, Spoofer, Sniff and Spoof.
• In Class Lab 2 (11/17). Please download lab setup files from here. You will also need Synflood, Reset, Reverse Shell.
• In Class Lab 3 (11/22). Please download lab setup files from here. You will also need DNS Cache Poisoning. The following commands will also be useful:
  rndc dumpdb -cache
  rndc flush
  cat /var/cache/bind/dump.db
  tc qdisc add dev eth0 root netem delay 100ms
  tc qdisc del dev eth0 root netem
  tc qdisc show dev eth0
  
• In Class Lab 4 (11/29). Please download lab setup files from here. The following commands will also be useful:
  iptables -t filter -L -n --line-numbers
  iptables -A INPUT -p icmp --icmp-type echo-request -j ACCEPT
  iptables -A FORWARD -p icmp --icmp-type echo-request -j DROP
  iptables -A FORWARD -i eth0 -p tcp --sport 5000 -j ACCEPT
  iptables -A FORWARD -p tcp -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
  iptables -A FORWARD -p tcp -i eth0 --dport 8080 --syn -m conntrack --ctstate NEW -j ACCEPT
  
• Lecture 17 (12/1).
• Lecture 18 (12/6). See also Class Exercise which we will do together during the Discussion Session. See also Class Exercise Solutions.
• Lecture 19 (12/8).