上QQ阅读APP看书,第一时间看更新
Using Nmap to find open ports
Nmap or Network Mapper is a security scanner that was written by Gordon Lyon in September 1997. It is used to find hosts and services in a network. Nmap has various features and scripts that are designed to perform various tests, such as finding the OS, service version, and brute-force default logins.
The following are some of the most common types of scan:
- TCP connect() scan
- SYN stealth scan
- UDP scan
- Ping scan
- Idle scan