OpenWRT - Secure your DDNS!
If you happen to use OpenWRT on your router and also use a dynamic DNS provider to connect to your network from outside, just a quick heads-up.
OpenWRT does NOT use a secure connection to update your IP by default. I happened to stumble on this, as DDNS was disabled after an upgrade, and I ended up using the command line to reconfigure it instead of luci - as I usually would.
For some reason Luci does not even provide the option to secure the connection between your router and your DDNS provider - which is why I never noticed.
The instructions are here: http://wiki.openwrt.org/doc/howto/ddns.client
Note: You will almost certainly have to enable SSL3 - or you should change your DDNS-Provider.