FreeBSD dyndns howto

A few days ago I’ve moved to a bigger apartment and I needed to change the ISP. Got a new contract, new ISP, 50Mbps speed for less than 10 Eur/month but only one problem .. no fixed IP address and from time to time I need to ssh on my home box.

So, the only solution was to create an account on dyndns.com and configure a dyndns client on my home gateway. After configuring the subdomain on dyndns.com I’ve chosen ipcheck as a dyndns client:

cd /usr/ports/dns/ipcheck

make install clean

The first time you run ipcheck you need to add the –makedat argument after which all you need to do is create a script dyndns.sh

for example

#!/bin/sh
cd
/usr/local/bin/python /usr/local/bin/ipcheck.py -l -i tun0 <username> <password> <hostname>

where :

<username> = your username on dyndns.com

<password> = obvious

<hostname> = a hostname configured on dyndns.com

and make crontab run it every 5 minutes to update your ip address.