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IP Traffic Spy v1.0.1

Stable Released Oct 19, 2026 MIT License

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IPSpy32.exe
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Release notes

Full Changelog: https://github.com/NTDLS/IP-Traffic-Spy/commits/1.0.1

New šŸŽ‰

  • IPv6 capture alongside IPv4, including extension headers.
  • Filters: CIDR blocks, port ranges, and Advanced Rules that combine address, port, protocol, TCP flags, host and payload text.
  • Filter options: an optional ā€œmatch all groupsā€ mode, one-click presets, and saving and loading filters as .ipsf files. Filters are also restored automatically when the program starts.
  • Right-click filters for conversations, remote IP, port, host and protocol, plus ā€œRemove Filters Matching This Packetā€.
  • Filters menu: Apply Filters To Grid, Clear All Filters, and Hide This Program’s Own DNS Lookups.
  • Grid columns: Direction, Flags, TTL, IP, Frag, Matched By.
  • Readable summaries in the Text column for DNS, HTTP and TLS server names.
  • Packet Details: a decoded pane (IP, TCP, UDP, ICMP, DNS, HTTP, TLS), a proper hex dump, and Prev/Next buttons.
  • Actions menu: Auto-Scroll and DNS Lookups toggles.
  • Status bar: filter count and hidden-packet count.

Changed šŸ˜Ž

  • Packets up to 64 KB are captured instead of dropped, and packet memory is capped at about 512 MB.
  • Host names are looked up for every address seen, even for packets your filters hide.
  • host example.com rules now match the site’s real IP addresses, not only reverse DNS.
  • The grid trims old rows in batches rather than one at a time.
  • Save Data to .csv is now truly comma-separated, and its header row includes Protocol.

Fixed šŸ›

  • Crashes and hangs from threading problems (host-name cache, Clear Grid).
  • Pause stalling on busy networks, and filter dialogs reopening after being closed.
  • Hotkeys firing twice.
  • Host names no longer fill in once the grid is full.
  • The grid flashing when it trimmed old rows.
  • The program’s own DNS lookups no longer cause a snowballing loop of extra traffic.
  • The first row now works with every right-click command.
  • Port filters now validate their input.
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