Internet Control Message Protocol (ICMP)
Rami Rosen · Apress eBooks · 2013
Chapter 2 discusses the netlink sockets implementation and how netlink sockets are used as a communication channel between the kernel and userspace. This chapter deals with the ICMP protocol, which is a Layer 4 protocol. Userspace applications can use the ICMP protocol (to send and receive ICMP packets) by using the sockets API (the best-known example is probably the ping utility). This chapter discusses how these ICMP packets are handled in the kernel and gives some examples. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.