nmap / nmap/npcap

Npcap: Suspending Windows interrupts network

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bug
Dominant language
C
Stars
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Forks
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Description

Reported here: https://seclists.org/nmap-dev/2019/q1/89

On a Windows 10 laptop with VMware Workstation Pro 14.1.6, Npcap is running on the host OS but not on the Windows 10 VM. User suspends the VM, then hibernates the laptop. On wakeup, the VM has no network access until Npcap is uninstalled. Host OS is not affected.

Reported as affecting 0.99-r8 through 0.992.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked Nmap developer report and reproduce the Windows 10 sequence: suspend the VMware VM, hibernate the laptop, then wake it. Trace Npcap's behavior after wakeup and determine why the VM loses network access while the host is unaffected. Done means the VM regains network access without uninstalling Npcap.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
networking, operating-systems
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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