Nmap vs Smap
GitHub Stats
About Nmap
Nmap (Network Mapper) is a free and open-source utility for network discovery and security auditing. It uses raw IP packets to determine available hosts, services, operating systems, packet filters/firewalls, and dozens of other characteristics. It was designed to rapidly scan large networks but works fine against single hosts. Nmap's scripting engine (NSE) allows users to write and share scripts to automate networking tasks, from vulnerability detection to backdoor discovery. It's used by security professionals, system administrators, and researchers worldwide.
About Smap
Smap is a passive port scanner that replicates Nmap's interface and output format while using Shodan's internet-wide scan data instead of actively probing targets. It accepts the same command-line arguments as Nmap, making it a drop-in replacement for reconnaissance scenarios where stealth is critical. Since Smap queries Shodan's existing database rather than sending packets to targets, it leaves zero network footprint on the target infrastructure. Results include open ports, service banners, and version information that Shodan has previously collected.
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Nmap only
Smap only