Chisel
Chisel is a free TCP/UDP tunnel over HTTP used to reach internal networks through firewalls for pentesters and red teams on authorized targets.
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- Pricing
- Free
- Platforms
- LinuxWindowsmacOS
- License
- Open source
- Reviewed
- Last reviewed 25 October 2026
- Links
- GitHub
What it is
A fast Go tunnel that wraps TCP and UDP traffic inside HTTP, including HTTP/2 and SSH-authenticated modes. Operators run a server on an allowed host and clients on hosts that need a path out or in.
What it helps with
- Tunneling into segmented networks during an authorized test
- Wrapping traffic as HTTP to pass restrictive egress filters
- Exposing selected local ports through a reverse tunnel
- Carrying UDP as well as TCP through the same tunnel
Who it's for
Pentesters and red teams tunneling through networks they own or are authorized to assess.
Worth knowing
Binaries cover Linux, Windows, and macOS. Tunneling through production networks without permission is unlawful; keep use inside an approved scope.
Is it a full C2 framework?
No, it is a tunnel; frameworks such as Sliver, Metasploit, or Mythic sit at a higher layer.
Does it only do reverse shells?
No, it forwards arbitrary TCP and UDP ports in either direction once the tunnel is up.
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