Best Network Discovery Tools for Linux

ManageEngine OpManager is an effective network discovery solution that automatically identifies and maps all devices within a network. It provides comprehensive visibility into the network infrastructure, including routers, switches, servers, and other components, enabling IT teams to understand their network topology. With features like automatic device classification, real-time updates, and detailed reporting, OpManager simplifies the management of complex networks. This powerful tool helps organizations maintain accurate inventories, optimize resource allocation, and enhance overall network performance by providing valuable insights into device relationships and connectivity.

Scapy is a powerful interactive packet manipulation program. It is able to forge or decode packets of a wide number of protocols, send them on the wire, capture them, match requests and replies, and much more. It can easily handle most classical tasks like scanning, tracerouting, probing, unit tests, attacks, or network discovery (it can replace hping, 85% of nmap, arpspoof, arp-sk, arping, tcpdump, tshark, p0f, etc.). It also performs very well at a lot of other specific tasks that most other tools can’t handle, like sending invalid frames, injecting your own 802.11 frames, combining technics (VLAN hopping+ARP cache poisoning, VOIP decoding on WEP encrypted channel), etc. Scapy runs natively on Linux, Windows, OSX, and on most Unixes with libpcap. The same code base now runs natively on both Python 2 and Python 3. Scapy development uses the Git version control system. Scapy reference repository is hosted on GitHub.