[ZanGetsu]

ZMap is a fast single packet network scanner designed for Internet-wide network surveys. On a typical desktop computer with a gigabit Ethernet connection, ZMap is capable scanning the entire public IPv4 address space in under 45 minutes. With a 10gigE connection and PF_RING, ZMap can scan the IPv4 address space in under 5 minutes.

ZMap operates on GNU/Linux, macOS, and BSD. ZMap currently has full implemented probe modules for TCP SYN scans, ICMP, DNS queries, UPnP, BACNET, and can send a large number of UDP probes. If you are looking to do more involved scans, e.g., banner grab or TLS handshake, take a look at ZGrab, ZMap's sister project that performs application-layer handshakes.

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Just to let you guys know, sometimes your internet (whole house/network) will die while using it (ISP gets angry?)...

[mothered]

Just to let you guys know, sometimes your internet (whole house/network) will die while using it (ISP gets angry?)...

Agree.

When I used It a while back, I did experience connectivity Issues.