Out of band alerting

Hello,

I would like to know how to alert the admins if the internet circuit goes down. A client has a single internet feed. It has a SIEM to send email alerts to the admins on servers, network and security incidents. They have rules on their outlook to forward certain critical events to their personal email accounts, which pop up on their phones. The question arose as to how they would be alerted if the circuit itself went down.

I'm looking for a working example with the right tools in an economical fashion. Really dating myself, but I have worked with an AS5300 with a SIM bank in the past, but I'm really looking for a scaled down solution. Back then, someone I know had a phone connected via a serial interface into his monitoring server. His piece of code would use the phone to text alerts out.

Thank you.
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netcmhAsked:
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nociSoftware EngineerCommented:
nowadays there are USB sticks with 3G or 4G modems (routers) on board. You can use those to alert out of band, at the cost of a sim subscription.
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netcmhAuthor Commented:
Any specific solution suggestions?
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nociSoftware EngineerCommented:
no the type & model depend on what your router may support and what you telco can provide you with including the service.
Mostly those USB sticks are Hayes command compatible modems so any modem application will work with them, only the dial string may need adjustment. Some can send SMS directly through hayes command sets. depending on Telco ..
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Shaun VermaakTechnical Specialist/DeveloperCommented:
Remotely monitor the connection and raise an alert from there. This can be as simple as exposing an port and just checking if it is alive
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netcmhAuthor Commented:
They would prefer that we monitor this from within the organization.
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masnrockCommented:
The question arose as to how they would be alerted if the circuit itself went down.
Without a second internet connection of some sort, they wouldn't. Does their router or firewall support multiple WAN connections? The suggestion from noci would work, or you could even look at a second circuit from a different provider.
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Mal OsborneAlpha GeekCommented:
You could have a machine outside of the site sending periodic pings, and sending an email when several consecutive ones failed.

Pingplotter can do this.
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netcmhAuthor Commented:
Thank you both, but they would prefer that we monitor this from within the organization. And, they have ruled out the purchase of a secondary connection.
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netcmhAuthor Commented:
I am awaiting any helpful solutions. Thank you.
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Mal OsborneAlpha GeekCommented:
Lets see I have this right.

You customer has ONE internet connection. The want an internal system to detect when it disconnects to the outside world, and send you an alert.

Logic would dictate that some sort of other "secondary connection" is required here.
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netcmhAuthor Commented:
Yes. Or, they have an independent smart device with a sim card that can send out sms texts.
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netcmhAuthor Commented:
Ok, with no luck here, I decided to go looking further. I found two solutions that might work as they have most of what I am looking for:
https://opengear.com/solutions/smart-out-band-management
https://uplogix.com/out-of-band-management/

Does anyone have any experience with these particular products or similar technologies?
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netcmhAuthor Commented:
Going with opengear as it meets our needs. Thanks to all who commented.
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