CRON and DNS updates
 

Greetings,

The Question: What is the best way to install and run an update client that will notify a site of any change to my dynamic ip address on my DSL connection?

I've got a new server running Red Hat Linux 7.3 (Valhalla)

It's a closed system I can only access via telnet.

I have run a ps -aux to see that there is no process CRON running.

I want (or think I want) CRON to help do the job of regularly checking my IP address and reporting it to a dynamic updating service: dtdns.com

dtdns.com has several Linux/Unix update clients on their site and I admit I haven't a clue which one is likely the best.

My other systems are all Windows. I used to run DOS, of course, and ran OS/2 for years and years so I'm not exactly a computer novice. But I'm unfamiliar with Linux to the point I'm thinking of putting it on a partition on my hard drive just to learn the thing!

Thank you for any advice you can offer!

There are daemons out on the net that you can install to do that, but if you want to use cron, I suggest that you learn how to use Netcat 'nc' and write your own script using that. Oh, and btw, if you are going to remotely admin. your box I suggest using SSH, and turning off telnet. Telnet is wide open for anyone to read your traffic.