J1mbo wrote: Try this:

Code:

#!/bin/bash # Checks the current public IP, and sends a mail if it has changed. # Environment Variables LOG=/var/log/check-ip.log RESTTIMER=3600 EMAILSERVER=mail.server.fqdn MAILFROM=yourserviceaccount@yourdomain MAILTO=youremailaddress@yourdomain COMMANDLINE="curl -s ipecho.net/plain" send_email () { # Log the change of status echo `date +'%Y%m%d %T'` $1 >> $LOG # Send a mail # Build the email EMAILSUBJECT="Public IP address change!" EMAILBODY="$1\n" # echo $EMAILBODY echo -e "$EMAILBODY" | mail -s "$EMAILSUBJECT" $MAILTO } # Script starts here... echo `date +'%Y%m%d %T'` check-ip.sh started >> $LOG # Check current public IP Old_IP=`$COMMANDLINE` while true; do # Now rest for RESTTIME seconds. We don't need to poll too often. sleep $RESTTIMER New_IP=`$COMMANDLINE` if ([ "$New_IP" != "$Old_IP" ]); then # IP address has changed! - send notification and update variable send_email "Public IP Address has changed. Was $Old_IP, now $New_IP." else # Just log that we checked echo `date +'%Y%m%d %T'` Public IP is $New_IP >> $LOG fi Old_IP=$New_IP done

Also mobile operators have opt-in (chargable) email to SMS services generally, like mmail.co.uk for O2. RESTTIMER is in seconds, so choose something sensible if you are going to use a chargeable SMS service in case something goes wrong!

You could also use SYSLOG and a log watcher to trigger the test only if the router produced some syslog message like a reboot or line drop etc.

Hope that helps.

J1mbo wrote: Hi again, the script is a bash script so needs to be run on a Linux machine - anything from a Raspberry Pi up will do, with sendmail configured. As far as I know, it's not possible to run scripts on the Draytek routers themselves, except if the firmware has been replaced with OpenWRT or similar.

I'd be very interested to help you with this though, unfortunately there is no PM system here... presumably you are a Windows environment? Do you have a server?