CloudFlare Dynamic DNS using STUN
There are a few command line dynamic DNS clients that support CloudFlares' API, but most of these use services like
jsonip <http://jsonip.com>_ to look up the external IP of a system. These services are great, but it would be better to use a standard protocol to do this. Fortunately, the STUN protocol exists for exactly this purpose.
CF_AUTH_EMAIL="firstname.lastname@example.org" CF_AUTH_KEY="abcde1234" cloudflare_stun --zone example.com --record-name extrn
Will create or update an A record for
extrn.example.com with the public IP address of the machine running the tool.
cloudflare_stun [-h] --zone ZONE [--record-name RECORD_NAME]
[--stun-server STUN_SERVER] [--stun-port STUN_PORT]
[--ttl TTL] [--force-update] [--debug | --quiet]
-h, --help show this help message and exit
--zone ZONE The name of the zone to update --record-name RECORD_NAME The name of the record to update, eg if --zone is example.com and --record-name is extrn, extrn.example.com will be updated. If omitted, the root of the zone will be updated --cf-auth-key CF_AUTH_KEY Cloudflare auth key. This is required if the CF_AUTH_KEY environment variable isn't set --cf-auth-email CF_AUTH_EMAIL Cloudflare auth email. This is required if the CF_AUTH_EMAIL environment variable isn't set --stun-server STUN_SERVER STUN server to query --stun-port STUN_PORT Port of the STUN server --ttl TTL TTL of the new DNS record. This is only used if the record doesn't already exist --force-update By default, the tool won't attempt to update the record if it is already correct. Use this to override this behavior --debug Output lots of information to help with debugging --quiet Don't output anything
- This tool only support Python 2.7, because the underlying STUN library doesn't support Python 3.x - See
the upstream repo <https://github.com/jtriley/pystun>_ for details.