nextnet
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Pivot point discovery tool that probes networks for multi-homed hosts via NetBIOS and other protocols.
Summary
nextnet is an open-source command-line tool, written in Go, that probes networks for multi-homed hosts to help identify potential pivot points, and it costs nothing to use. You run it directly against a CIDRCIDRA notation for a block of IP addresses, such as 10.0.0.0/24. The number after the slash says how many leading address bits identify the network. range or list of IP addresses, sending NetBIOS and other discovery probes and getting back JSON records naming each host, its interfaces, and other identifying network addresses. It is aimed at penetration testers and red teamers doing internal or external reconnaissance, where finding a dual-homed machine can reveal a route into a segmented network. It sits in the network-discovery and scanning space alongside other host-discovery utilities, rather than replacing a full port scanner. Its history is thin: a single contributor, first committed in 2018, with no commits in the past year, so it should be treated as a small, largely dormant utility rather than an actively maintained project.
Pivot point discovery tool that probes networks for multi-homed hosts via NetBIOS and other protocols.
How nextnet helps
Which hosts on this network are bridged into another segment I don't know about?
sends NetBIOS and other discovery probes across the given CIDR range and reports every additional network address a host advertises, surfacing dual-homed machines by name and interface list
Which machine is my route from this subnet into a segmented network I can't otherwise reach?
matches each responding host's advertised interfaces against the target range and flags the ones straddling two networks, giving the interface addresses needed to pivot
What is the real hostname and domain behind an internal IP that only answers on NetBIOS?
reads the NetBIOS response for name, workgroup/domain, and hardware address and returns them alongside the IP that was probed
How many multi-homed hosts can I find across a large external range before the scan takes all day?
lets the probe rate be pushed up so a whole /16 can be swept quickly, trading completeness of replies for speed
Which hosts replied but turned out not to be worth following up?
prints one JSON record per response, so filtering for entries with more than one network address separates real pivot candidates from single-homed noise
Languages
Command line
| option | found in | since | description |
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Values are placeholders taken from each option’s declared default. Nothing is executed here — the output shown is a recording of a run that already happened.
Release-note detail over time
See how much detail nextnet puts in its release notes, quarter by quarter, and compare it with tracked tools in the same category. This history uses up to ten retained, reviewed notes per tool; sparse or blank older quarters may reflect that limit.
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Releases
Nothing shipped since we started watching. Releases and docs updates land here as they happen.
Project health
Issue, contributor and maintainer activity in hdm/nextnet, 2023-10 – 2026-09, as of 2026-09-25. Twelve-month figures first; the trend lines run the whole window.
- Contributors 0 −1 vs prior 12 months
- Maintainers 0 +0 joined · −0 left, last 12 months
- Bus factor 0 committers behind half the commits
- Community-filed not measured of issues opened, last 12 months
- Median time to close not measured issues closed, last 12 months
- Open backlog 11 of 11 issues ever filed
- Issues opened / month 0 · 0 communitymaintainers
- Open backlog 11
- Contributors / month 0
- Commits / month 0
- Stars 452
Counts from the project's public repository and git history; no individuals are identified. Maintainers are the committers covering 80% of the last year's commits. how we measure this
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