The only problem is that my ISP gives me a dynamic IP address- which changes now and then, and when it does, content filtering stops.
Somebody suggested a Linux IP updater.
The updater uses ddclient, so the first thing to do is to install that from the Debian repository. The installer offers a lot of configuration options, but just click through those because you're going to add a custom configuration file from the link above, replacing the one that is written to the etc/ddclient.conf file.
These are the configuration settings I used:
##DNS-O-Matic is an OpenDNS service that detects your IP address- which is then fed to the OpenDNS server and updated if it has changed. (You change the checking interval by editing /etc/default/ddclient).
## OpenDNS.com account-configuration
(In Debian at least the default setting seems to be for ddclient to run as a daemon, and there doesn't appear to be a need to add anything to start it.)
Login=the email address that serves as your OpenDNS login: firstname.lastname@example.org.
Password=your OpenDNS password, inside single quotes:'password$' (Apparently ddclient is written in Perl and special characters must be in quotes in Perl, and OpenDNS insists on at least one special character in password.) *see warning below.
opendns_network_label is the name you have given to your network on the OpenDNS settings page: for me it was Home. (NB If you have spaces in your network label, they must be replaced by underscores.)
So the final three lines were:
email@example.comYou can test if the updater is working by running
# ddclient -verbose -file /etc/ddclient.confFor me the updater didn't work at first- my IP address changed but OpenDNS wasn't updated.The above command gave the following error message:
updating: authorization failed Unauthorized FAILEDAfter an hour or two of Googling, I eventually stumbled upon a solution at DynDNS Community Forum: *apparently ddclient doesn't handle special characters well (even in quotes), and I had several in mine.
I changed my password for something with only one special character (a boring old $- they seem to be acceptable), and my IP address was updated in the OpenDNS settings, so everything seems to be working OK now.