Packet sniffing is a technique used to intercept and monitor network traffic. It can be used for a variety of purposes, from troubleshooting to malicious activity. There are a number of ways to avoid packet sniffing, including using encryption, firewalls, and intrusion detection systems.
Encryption is one of the most effective ways to avoid packet sniffing. When data is encrypted, it is scrambled in such a way that it is very difficult to decrypt without the correct key. This makes it much more difficult for packet sniffers to intercept and read the data.