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https://github.com/jvns/dnspeep
spy on the DNS queries your computer is making
https://github.com/jvns/dnspeep
Last synced: 4 days ago
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spy on the DNS queries your computer is making
- Host: GitHub
- URL: https://github.com/jvns/dnspeep
- Owner: jvns
- License: mit
- Created: 2021-03-28T17:59:46.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2024-08-27T19:11:29.000Z (4 months ago)
- Last Synced: 2024-11-30T23:00:13.118Z (11 days ago)
- Language: Rust
- Homepage:
- Size: 32.2 KB
- Stars: 1,352
- Watchers: 16
- Forks: 57
- Open Issues: 12
-
Metadata Files:
- Readme: README.md
- License: License.md
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README
# dnspeep
`dnspeep` lets you spy on the DNS queries your computer is making.
Here's some example output:
```
$ sudo dnspeep
query name server IP response
A incoming.telemetry.mozilla.org 192.168.1.1 CNAME: telemetry-incoming.r53-2.services.mozilla.com, CNAME: pipeline-incoming-prod-elb-149169523.us-west-2.elb.amazonaws.com, A: 52.39.144.189, A: 54.191.136.131, A: 34.215.151.143, A: 54.149.208.57, A: 44.226.235.191, A: 52.10.174.113, A: 35.160.138.173, A: 44.238.190.78
AAAA incoming.telemetry.mozilla.org 192.168.1.1 CNAME: telemetry-incoming.r53-2.services.mozilla.com, CNAME: pipeline-incoming-prod-elb-149169523.us-west-2.elb.amazonaws.com
A www.google.com 192.168.1.1 A: 172.217.13.132
AAAA www.google.com 192.168.1.1 AAAA: 2607:f8b0:4020:807::2004
A www.neopets.com 192.168.1.1 CNAME: r9c3n8d2.stackpathcdn.com, A: 151.139.128.11
AAAA www.neopets.com 192.168.1.1 CNAME: r9c3n8d2.stackpathcdn.com
```
### experimental software warning
dnspeep is experimental and unmaintained, it definitely has bugs, I do not trust that its output is always correct
## How to install
You can install dnspeep using the different methods below.
### Installing the binary release
1. Download recent release of `dnspeep` from [the GitHub releases page](https://github.com/jvns/dnspeep/releases)
1. Unpack it
1. Put the `dnspeep` binary in your PATH (for example in `/usr/local/bin`)
### Compile and installing from source
1. Download recent source release of `dnspeep` from [the GitHub releases page](https://github.com/jvns/dnspeep/releases) or git clone this repository.
1. Unpack it
1. Run ```cargo build --release```
1. Change to the "target/release" directory there.
1. Put the `dnspeep` binary in your PATH (for example in `/usr/local/bin`)
### Installing from a Linux package manager
* If you are using Arch Linux, then you can install dnspeep from the [AUR](https://aur.archlinux.org/).
### How it works
It uses `libpcap` to capture packets on port 53, and then matches up DNS
request and response packets so that it can show the request and response
together on the same line.
It also tracks DNS queries which didn't get a response within 1 second and
prints them out with the response ``.
### Limitations
* Only supports the DNS query types supported by the `dns-message-parser` crate ([here's a list](https://docs.rs/dns-message-parser/0.6.0/dns_message_parser/rr/enum.RR.html))
* Doesn't support TCP DNS queries, only UDP
* It can't show DNS-over-HTTPS queries (because it would need to MITM the HTTPS connection)