You might want to try something like this for /etc/dhclient-exit-hooks if you're using the ISC dhcp client.
if [ x$reason = xBOUND ] || [ x$reason = xRENEW ] || \ [ x$reason = xREBIND ] || [ x$reason = xREBOOT ]; then mail -s "new dhcp address = $new_ip_address" [EMAIL PROTECTED] </dev/null fi The above code hasn't been tested. You should be able to use a mail client without a mail server running. If you don't even have mail clients, you could telnet to port 25 and use <<! to inline the commands to send mail manually, use some perl code to mail (I think there are some modules for SMTP support), ftp a file (again, you might need to use <<! to generate ftp commands) containing your new address to your web page (that's what I do.) On Fri, Aug 11, 2000 at 05:30:52PM +0200, Julien Stern wrote: > Hi all, > > I have a stupid problem with my firewall. > It's very simple (no DMZ) and it has a dynamic IP. > Everything works fine. However, I would like to be > able to know what's the new IP of my firewall when I'm > away. > > Nothing runs of the firewall except ssh2 and syslogd > (oh, well there is cron, portmap, tcplogd and a few others, but > no ftp, telnet, web, rlogin, mail... no services basically). > > So, how to get the firewall new IP when it changes? > > If I can retrieve the IP from an inside box, I can simply > mail it to an outside account. But how to retrieve this > address automatically, simply and securely? > > Sincerely, > Julien > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > -- Lee Bradshaw [EMAIL PROTECTED] (preferred) Alantro Communications [EMAIL PROTECTED]
