DNS proxy tool

Related tags

Applications dns udp dns-server dns-proxy
Overview

updns

GitHub Workflow Status Crates.io Crates.io

updns is a simple DNS proxy server developed using Rust. You can intercept any domain name and return the ip you need

Install

Download the binary from the release page

Or use cargo to install

cargo install updns

Start to use 🚀 

updns
# or
updns -c /your/hosts

You may use sudo to run this command because you will use the 53 port

Running in docker

Build docker image

docker build -t updns .

Start up

docker run -d --name updns -p 53:53/udp -v /root/updns/:/root/.updns/ --restart always updns

Command

Usage:
    updns [COMMAND] [OPTION]
            
Command:
    add        Add a DNS record
    ls         Print all configured DNS records
    config     Call 'vim' to edit the configuration file
    path       Print related directories
    help       Print help information
    version    Print version information

Option:
    -c    Specify a config file
    -i    Check the interval time of the configuration file
          format: 1ms, 1s, 1m, 1h, 1d

Config

You can use updns config command and then call vim edit, or find ~/.updns/config edit

You can specify standard domains, or utilize regular expressions for dynamic matching

Regular expression starts with ~

bind     0.0.0.0:53      # Binding address
proxy    8.8.8.8:53      # Proxy address
timeout  2s              # Proxy timeout (format: 1ms, 1s, 1m, 1h, 1d)

# Domain matching
example.com              1.1.1.1
*.example.com            2.2.2.2
~^\w+\.example\.[a-z]+$  3.3.3.3

# IPv6
test.com                ::

# Import from other file
import /other/hosts

Reference

Building a DNS server in Rust

License

MIT license

Comments
  • Updns has vulnerability in downstream dependencies

    Updns has vulnerability in downstream dependencies

    Updns depends on Logs v 0.5.0, which in turn depends on time 0.1.44

    This version of time has a vulnerability: https://rustsec.org/advisories/RUSTSEC-2020-0071

    If logs is upgraded to the latest 0.6.2, it will be upgrade time to 0.3.14+ which doesn't have this vulnerability.

    opened by vronin 2
  • wrong arguments passed to buffer::copy

    wrong arguments passed to buffer::copy

    Hello @wyhaya there's a bug in https://github.com/wyhaya/updns/blob/4fb62c6fa6863089c8443d737ad1de61031280af/lib/parse.js#L125-L126 The third argument should be a number indicating sourceStart, see https://nodejs.org/api/buffer.html#buffer_buf_copy_target_targetstart_sourcestart_sourceend

    opened by refack 1
  • global install update: bind param in hosts, watch hosts for changes, regex RFC update, support regex hosts

    global install update: bind param in hosts, watch hosts for changes, regex RFC update, support regex hosts

    I committed in small batches to make it easy(ier) for you to follow along. There are comments in the code, as well as on the larger (and less obvious) commits. I rebased it from your recent changes, so if you like what you see, it should be an easy merge.

    1. Specify bind parameters in the hosts/config file.
    2. Watches & automatically loads changes to the hosts file.
    3. Did my best to adhere to RFC spec for domain name matching, updated the regex.
    4. Allow regular expressions in the hosts file (requests are still validated to RFC spec).
    opened by ksteckert 1
  • readme updates

    readme updates

    1. updated hosts example
    2. added INI syntax highlighting to hosts code-block
    3. mentioned IP:port binding
    4. mentioned regex matching with a link to RegexPal (for testing regex on JS)
    5. Updated module example with demonstratioin IP binding, with a mention that it's optional
    opened by ksteckert 0
  • bind to address

    bind to address

    Allow binding to a specific address. Services such as dnsmasq and ssystemd-resolved often bind to port 53, this will allow a user to bind to their external address, (or any valid loopback: 127.x.x.x).

    I did this for my dev environment. I have updns bound to 127.0.0.2, and I updated my dns settings to point to 127.0.0.2, and have the script running in PM2, works like a champ. Without this change, any other process using port 53 (bound to any address) will cause NodeJS to throw an exception about the port already in use. This allows the user to bind to a specific address.

    opened by ksteckert 0
  • bind to address

    bind to address

    Allow binding to a specific address. Services such as dnsmasq often bind to 127.0.0.1:53, this will allow a user to bind to their external address, or a different loopback (127.0.0.2). I did this for my dev environment. I have the updns bound to 127.0.0.2, with a regex pattern match so I don't have to add a bunch of entries to my hosts file. I updated my dns settings to point to 127.0.0.2, and have the script running in PM2, works like a champ. I have the default set as 127.0.0.1 so it's fully backwards compatible, no breaking changes.

    opened by ksteckert 0
Owner
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