A small tool that aims to help debugging NAT on a firewall.
This tool listens on the specified interfaces and prints all packets, that match the given filter and target.
- Golang (>=1.19)
- libpcap
- Make
- go vet (✅ tests/linting)
- staticcheck (✅ tests/linting)
- gosec (✅ tests/linting)
or
- nix
First build the binary according to the build instructions.
Then you should be able to run the binary and configure it according to the help instructions (./bin/natter --help).
Here's an example, that displays all icmp packets on interface en0 and lo0.
sudo bin/natter -i en0,lo0 -f "icmp"In order to build the binary, just run make build. The binary will be placed in the ./bin directory.
Hint Since libpcap is used, the tool should be compiled at least on a machine the target OS.
If you are missing features or find some annoying bugs please feel free to submit an issue or a bugfix within a pull request :)
© 2023 Daniel Jankowski
This project is licensed under the MIT license.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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