Simple DNS server that allows to serve realtime blacklists
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rbldnsd is a simple DNS server that allows to serve realtime blacklists (or whitelists) via DNS. All you need is a DNS zone file as described in the rbldnsd documentation.
Then run the container with the zonename:type:fname,fname,fname... as the command and let the NS entry of your DNS zone point to the docker host.
docker run -it --rm \
-v /path_to_your_zone_directory/:/var/lib/rbldnsd/:ro \
-p 53:53/udp \
kurthuwig/rbldnsd:latest \
my-blacklist.example.com:ip4set:my-blacklist
This is an example fig file to launch rbldnsd. You only have to change the command and maybe the source directory for the volume containing the zone files.
rbldnsd:
image: kurthuwig/rbldnsd:latest
volumes:
- /path_to_your_zone_directory/:/var/lib/rbldnsd/:ro
ports:
- "53:53/udp"
command: "my-blacklist.example.com:ip4set:my-blacklist"
Normal DNS blacklists list an entry for 127.0.0.2 for testing purposes. If you did this as well, you can test your setup on a unix system with the host command:
$ host 2.0.0.127.my-blacklist.example.com. localhost
Using domain server:
Name: localhost
Address: 127.0.0.1#53
Aliases:
2.0.0.127.my-blacklist.example.com has address 127.0.0.2
and the negative test with
$ host 1.0.0.127.my-blacklist.example.com. localhost
Using domain server:
Name: localhost
Address: 127.0.0.1#53
Aliases:
Host 1.0.0.127.my-blacklist.example.com. not found: 3(NXDOMAIN)
Content type
Image
Digest
sha256:d4df61c2d…
Size
43.2 MB
Last updated
over 8 years ago
docker pull kurthuwig/rbldnsd