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DNSSHIM

Introduction

DNSSHIM is an open-source software that implements the Domain Name Name System (DNS) protocol for the Internet. Its main feature is to work as a Hidden Master nameserver, that is, provide information only to authoritative slave servers. Furthermore he has the ability to manage, store and automatically resign zones using the security extension DNSSEC.

Documentation

For further information, please check at http://www.registro.br/dnsshim

More detailed instructions about how to install and use DNSSHIM can be found in the manual_en.pdf. In the document protocol_en.pdf there is detailed documentation on the protocol used for communication between DNSSHIM and its clients.

Furthermore, quick instructions on how to get started with DNSSHIM are in the next session.

Getting Started

In order to get DNSSHIM running and serving zones quickly, follow these small steps:

  • Set the environment variable DNSSHIM_HOME to the base directory where configuration files should be placed.

  • Start the Signer by running:

    $ java -jar dnsshim-signer.jar

  • Start the XFRD Server by running:

    $ java -jar dnsshim-xfrd.jar

  • Download the pydnsshim client from the DNSSHIM website

  • Unpack the pydnsshim client and install it by issuing:

    $ python setup.py install

  • Run the client:

    $ dnssh.py -s <server_IP>

  • Before starting creating zones, an user account must be created:

    dnssh> add-user -u

  • Then, do the login:

    dnssh> login -u

  • Now, we can begin sending commands to DNSSHIM. To create a new zone, simply do:

    dnssh> new-zone -z zone.com.br

  • Add the NS records to the zone:

    dnssh> add-rr -z zone.com.br -o "" -t NS -r "ns1.zone.com.br" dnssh> add-rr -z zone.com.br -o "" -t NS -r "ns1.zone.com.br"

  • One can also add some other records to the zone:

    dnssh> add-rr -z zone.com.br -o "www" -t A -r "192.168.0.1" dnssh> add-rr -z zone.com.br -o "" -t MX -r "mx.zone.com.br" dnssh> add-rr -z zone.com.br -o "www2" -t CNAME -r "www.zone.com.br"

  • Every zone should have some slaves server assigned, so we need to create a slavegroup with some slaves and assign it to the zone:

    dnssh> new-slavegroup -g <slavegroup_name> dnssh> add-slave -g <slavegroup_name> -s <slave1_IP> dnssh> add-slave -g <slavegroup_name> -s <slave2_IP> dnssh> assign-slavegroup -g <slavegroup_name> -z zone.com.br

  • Create a TSIG key for each of the slave server:

    dnssh> new-tsig-key -k -s <slave1_IP> dnssh> new-tsig-key -k -s <slave2_IP>

  • Finally, we need to publish the zone:

    dnssh> pub-zone -z zone.com.br