# DhavalKapil/icmptunnel

Transparently tunnel your IP traffic through ICMP echo and reply packets.

Repository: https://github.com/DhavalKapil/icmptunnel
Canonical: https://ross.abutalabs.com/products/icmptunnel
Homepage: https://dhavalkapil.com/icmptunnel/
Language: C
License Family: other
Topics: icmp, tunnel, proxy
Last push: 2022-04-12T05:09:41+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4027, "days_push": 1604, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3254, forks 352 (observed 2026-08-28T04:07:52.214815+00:00)

## What it is
icmptunnel is a C command-line tool that transparently encapsulates IP traffic inside ICMP echo and reply packets, tunneling it through a proxy server. It lets client machines communicate using only ICMP, enabling traffic to pass through networks that block other protocols.

## Use cases
- bypass captive portal authentication on public wifi
- tunnel traffic through firewalls that block tcp and udp
- establish an encrypted channel between two hosts over icmp
- get internet access on networks that only allow ping
- route ip traffic through icmp echo packets via a proxy server

## When to choose
- you are behind a restrictive network or captive portal that permits ICMP but blocks other traffic
- you control both a client and an internet-connected proxy server with root access on POSIX systems

## When to avoid
- you need a maintained, production-grade VPN solution with encryption built in
- you cannot obtain root privileges on both machines
- the network actively filters or rate-limits ICMP traffic

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: proxy, networking, security, cryptography
- domain: networking, security, privacy, censorship-circumvention
- platform: cli, self-hosted
- tags: icmp-tunnel, captive-portal-bypass, firewall-bypass, c, tunneling, linux

## Member repositories
- DhavalKapil/icmptunnel (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:52.214815+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:24:23.734623+00:00, confidence not recorded.
  - readme: https://github.com/DhavalKapil/icmptunnel (fetched 2026-08-28T04:07:52.214815+00:00, sha b0ba78b098d2)
  - homepage: https://dhavalkapil.com/icmptunnel/ (fetched 2026-08-29T09:36:52.489592+00:00, sha 164cb6b0694c)
- Data as of 2026-08-30T08:39:29.467469+00:00.