Security vulnerabilities At every laver in the protocol stack! ° Network-layer attacks IP-level vulnerabilities ◆ Routing attacks Transport-layer attacks ◆ TCP vulnerabilities Application-layer attacks 15-411: F08 securitySecurity Vulnerabilities • At every layer in the protocol stack! • Network-layer attacks  IP-level vulnerabilities  Routing attacks • Transport-layer attacks  TCP vulnerabilities • Application-layer attacks 15-411: F08 security 4