Linux networking is a vast domain. The last decades have seen countless volumes and references written about Linux network administration internals. Sometimes, the mere assimilation of essential concepts could be overwhelming for both novice and advanced users. This chapter provides a relatively concise overview of Linux networking, focusing on network communication layers, sockets and ports, networking services and protocols, virtual private networks (VPNs), and network security.
We hope that the content presented in this chapter is both a comfortable introduction to basic Linux networking principles for a novice user and a good refresher for an advanced Linux administrator.
In this chapter, we cover the following topics:
- Exploring basic networking—focusing on computer networks, networking models, protocols, network addresses, and ports. We also cover some practical aspects of configuring Linux network settings using the command...