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| -rw-r--r-- | modules/rebinding/README.rst | 25 |
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diff --git a/modules/rebinding/README.rst b/modules/rebinding/README.rst new file mode 100644 index 0000000..26432e6 --- /dev/null +++ b/modules/rebinding/README.rst @@ -0,0 +1,25 @@ +.. _mod-rebinding: + +Rebinding protection +-------------------- + +This module provides protection from `DNS Rebinding attack`_ by blocking +answers which cointain IPv4_ or IPv6_ addresses for private use +(or some other special-use addresses). + +To enable this module insert following line into your configuration file: + +.. code-block:: lua + + modules.load('rebinding < iterate') + +Please note that this module does not offer stable configuration interface +yet. For this reason it is suitable mainly for public resolver operators +who do not need to whitelist certain subnets. + +.. warning:: Some like to "misuse" such addresses, e.g. `127.*.*.*` + in blacklists served over DNS, and this module will block such uses. + +.. _`DNS Rebinding attack`: https://en.wikipedia.org/wiki/DNS_rebinding +.. _IPv4: https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml +.. _IPv6: https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml |