Vulnerabilities at the Internet Layer

The Internet Layer (TCP/IP stack) and the Network Layer (OSI model) are where the Internet Protocol (IP) resides. The Internet Layer and the Network Layer are responsible for IPv4 and IPv6 addressing, and routing IP packets; various routing protocols such as Routing Information Protocol (RIP), Open Shortest Path First (OSPF), Intermediate System-Intermediate System (IS-IS), Enhanced Interior Gateway Routing Protocol (EIGRP), and Border Gateway Protocol (BGP) operates here. There are many weaknesses/flaws which an attacker can leverage by simply exploiting the design of the Internet Protocol (IP). In this section, we will take a look at a few notable ones.

Route spoofing

Route spoofing...