Notifications - Any way to get the IP Address of the WAN when I get an alert?

[sedace]

I've got alerts setup so that I get notified when a wan interface has high latency or goes down.  I was curious if there's a way to get the IP Address of the WAN included when it comes back up?  99% of the time it's the same IP but it'd be nice to know if the ISP changes it.

I know I can use Dynamic DNS, I'm not sure I want to expose that I have services running on my network by using that option. 

Not a big deal, but I figured someone may know more about scripting than I do that could point me in the right direction if it's even possible.

[faunsen]

Just an idea.
You could use the Monit Plugin.
Create a test that executes a script on failure. And that script sends the ifconfig output to you.

Unfortunately Monit cannot send script output.
Therefore we send emails from command line via the os-postfix plugin.
Install and enable it.

Then configure Monit:
E.g.
Test
Name: TestWANLink
Condition: failed link
Action: Execute
Path: /usr/local/bin/IfaceAlert.sh "you@domain.tld" vtnet0

In this example "you@domain.tld" is the recipient and vtnet0 is the WAN interface (see Interfaces->Assignments)

Service
Name: WANLink
Type: Network
Interface: WAN
Tests: TestWANLink

The script /usr/local/bin/IfaceAlert.sh could look like this:

Code: [Select]

#!/bin/csh

( printf "To: $1\nSubject: Interface Link Down\n\n" ; ifconfig $2 ) | sendmail $1