Tiny replacement for piHole DNS filter.
Idea is to produce a very simple, no-web-interface , IP DNS blocker.

LowEel b4253142f3 Startup improved 3 months ago
.vscode d9da34f7b1 added modules and vendoring 7 months ago
vendor 0a4ca528f4 Refactoring, and improved vendoring 3 months ago
.gitignore 626e20b9ac New gitignore. 3 months ago
00.database.go 2b7e79a751 Initial commit 8 months ago
00.memory.go 2b7e79a751 Initial commit 8 months ago
01.conf.go d9da34f7b1 added modules and vendoring 7 months ago
01.dnscheck.go b4253142f3 Startup improved 3 months ago
01.killfile.go 0a4ca528f4 Refactoring, and improved vendoring 3 months ago
01.stats.go 2b7e79a751 Initial commit 8 months ago
02.cache.go 2b7e79a751 Initial commit 8 months ago
Dockerfile.amd64 5d099752be Dockerfile added. 3 months ago
Dockerfile.arm32v7 5d099752be Dockerfile added. 3 months ago
Dockerfile.arm64v8 5d099752be Dockerfile added. 3 months ago
LICENSE 2b7e79a751 Initial commit 8 months ago
README.md 33e80cafa5 Updated README 3 months ago
adlist_hosts.go 0a4ca528f4 Refactoring, and improved vendoring 3 months ago
adlist_single.go 0a4ca528f4 Refactoring, and improved vendoring 3 months ago
config.json 597d373023 Refactoring of download functions 3 months ago
dns-upstream.txt 9d243a3cc7 All public DNS of Germany in round robin. YEAH. 4 months ago
dns_client.go b4253142f3 Startup improved 3 months ago
dns_handler.go 2b7e79a751 Initial commit 8 months ago
go.mod d9da34f7b1 added modules and vendoring 7 months ago
go.sum 328c9f288b Added a check for network up 3 months ago
hostfile.go 2b7e79a751 Initial commit 8 months ago
main.go d9da34f7b1 added modules and vendoring 7 months ago
urls-domains.txt 597d373023 Refactoring of download functions 3 months ago
urls-hosts.txt 597d373023 Refactoring of download functions 3 months ago
urls-local.txt 9958d4a331 Added byoblu 3 months ago

README.md

zabov

Tiny replacement for piHole DNS filter

Still Work in progress, usable.

Idea is to produce a very simple, no-web-interface , IP DNS blocker.

INSTALL

Zabov requires golang 1.13 or later.

git clone https://git.keinpfusch.net/LowEel/zabov.git
cd zabov
go get
go build -mod=vendor

Then, edit config.json: please notice config.json must be in the same folder of the executable you run.

Just a few words about "singlefilters" and "doublefilters":

Data must be downloaded from URLs of blacklist mantainers.They may come in different formats.

There are two kinds of blacklists:

One is the format zabov calls "singlefilter", where we find a single column , full of domains:

domain1.com
domain2.com
domain3.com

The second is the format zabov calls "doublefilter" (a file in "/etc/hosts" format, to be precise), where there is an IP, usually localhost or 0.0.0.0 and then the domain:

127.0.0.1 domain1.com
127.0.0.1 domain2.com
127.0.0.1 domain3.com

This is why configuration file has two separated items.

The config file should look like:

{
    "zabov": {  
        "port":"53", 
        "proto":"udp", 
        "ipaddr":"127.0.0.1",
        "upstream":"./dns-upstream.txt",
        "cachettl": "4",
        "killfilettl": "12",
        "singlefilters":"./urls-hosts.txt" ,
        "doublefilters":"./urls-domains.txt", 
        "blackholeip":"127.0.0.1",
        "hostsfile":"./urls-local.txt"
    }

}



Where:

  • port is the port number. Usually is 53, you can change for docker, if you like
  • proto is the protocol. Choices are "udp", "tcp", "tcp/udp"
  • ipaddr is the port to listen to. Maybe empty, (which will result in listening to 0.0.0.0) to avoid issues with docker.
  • upstream: file containing all DNS we want to query : each line in format IP:PORT
  • cachettl: amount of time the cache is kept (in hours)
  • killfilettl: refresh time for killfiles
  • singlefilters: name of the file for blacklists following the "singlefilter" schema.(one URL per line)
  • doublefilters: name of the file, for blacklists following the "doublefilter" schema.(one URL per line)
  • blackholeip: IP address to return when the IP is banned. This is because you may want to avoid MX issues, mail loops on localhost, or you have a web server running on localhost
  • hostsfile: path where you keep your local blacklistfile : this is in the format "singlefilter", meaning one domain per line, unlike hosts file.

DOCKER

Multistage Dockerfiles are provided for AMD64, ARMv7, ARM64V8

TODO:

  • caching
  • monitoring port