Using inadyn With DynDNS Services
Introduction
inadyn is a C based client used to update DNS entries. This client works with all of our services as well as services provided by some of our competitors. inadyn was written by inarcis. More information can be found at inadyn.ina-tech.net
Download: The most recent version of inadyn we have vetted can be downloaded here.
IP Detection
inadyn supports detecting the public IP address via our CheckIP service.
System Compatibility
inadyn officially runs on Linux, Windows, Mac OS, and OpenBSD.
Configuration File
Inadyn can be configured by command line options or by a configuration file. A default configuration file is /etc/inadyn.conf under Unix systems. The location of the config file can be given to inadyn via --input_file option.
Example 1
inadyn can be run from the command line, through cron, or a similar utility.
inadyn --username test --password test --update_period_sec 600 --alias test.homeip.net inadyn -u test -p test --update_period_sec 600 --dyndns_system custom@dyndns.org --alias your.domain.tld
Example 2
Here is a basic template which provides the various options available.
update_period_sec 600 # Check for a new IP every 600 seconds # Enter your DynDNS username and password here username your-login # your DynDNS username password your-password # your DynDNS password # What kind of host is being updated? Choices are dyndns@dyndns.org, statdns@dyndns.org, custom@dyndns.org dyndns_system dyndns@dyndns.org alias your-dynamic-host.dyndns.org alias another-dynamic-host.homeip.net
Example 3
Here is a minimal inadyn.conf file designed to update a single Dynamic DNS host.
# Basic configuration file for inadyn # # /etc/inadyn.conf update_period_sec 600 # Check for a new IP every 600 seconds username test password test dyndns_system dyndns@dyndns.org alias test.homeip.net
Issues To Be Aware Of
- The DynDNS update protocol supports MX, BACKMX, WILDCARD and OFFLINE options, but inadyn does not support these. Entering these options in the inadyn.conf file will result in inadyn failing.
- inadyn currently only supports updates via http. Updates over https are not supported at this time.
- inadyn only supports updating hosts for one system type at a time. dyndns, statdns, and custom cannot be mixed within the same configuration file.
- Running inadyn from the command line is a security risk because your password will show up in the process table. Be careful if you run it on a machine with multiple users.