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  • If it's like some other firewalls I recall, the RX/TX should drop to 0 indicating no traffic is coming in or out of it. I see in sonicwall its referred to as bcastrRx and bcastTx in the Log Event Message Index. 

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  • spicerenegade wrote:

    Hello all. Im pretty grey with SonicWalls and wondered what the log would look like when the internet goes down. Anyone know?

    Grey or not - unplug the Internet cable and find out for your own, how it looks like.

    When managing a firewall, you must also be prepare to do some experimenting on your own, else you will stay 'grey' forever.

    A lot of the experimenting can be done without hurting everyday work, the rest stays for after-hours.

    Just don't forget to make backups before you start playing. AND.....learn how to do a full reset and restore from the backup

    It's good to have a backup, but it's even better to know how to use it ;)

    Usually a complete reset and restore (e.g. when you manage to lock yourself out of the device) can be done in minutes (at least on my WatchGuard firewall - so I guess, SonicWall is not that much different).

    Spice (1) flagReport
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  • There are many causes to 'internet loss" and thy may each look different in logs - if they show at all.

    if the interface goes down the firewall will know about this and log it. IF using ppoe it may know when down.

    But if it connects to another router/ont etc it may not know when the internet is down. To detect internet loss in these scenarios (and useful anyway) configure a network probe that checks an internet host is reachable. This will log when down.

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  • We have 2 ISP, and have our SonicWall set to fail over when the primary goes down.

    I set this up on my SonicWall It sends me an email when it fails over.

    SonicWall Alert if WAN link goes down.

    Not sure if that would help you or not.

    .

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  • m@ttshaw wrote:

    There are many causes to 'internet loss" and thy may each look different in logs - if they show at all.

    if the interface goes down the firewall will know about this and log it. IF using ppoe it may know when down.

    But if it connects to another router/ont etc it may not know when the internet is down. To detect internet loss in these scenarios (and useful anyway) configure a network probe that checks an internet host is reachable. This will log when down.

    SD-WAN options will also act like a probe. At least on my WatchGuard, it measures loss, latency and jitter:

    I'd suppose, that SonicWall also has something similar...?

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