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aardbol
Asked: 2017-11-11 14:17:03 +0800 CST

NAS without internet connection, but still get notifications

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I don't want our back-up Synology NAS to have a connection to the internet, but I still want to receive some kind of notification when there's something wrong with the hardware (the notification it can provide built-in).

Say that I connect the back-up NAS directly to the server, how could I still get notifications in some way when it has support for email messages or can report to a syslog server.

I was thinking of instead of directly attaching the back-up NAS to the server, to attach it to the switch in a separate VLAN for the back-up traffic, and give it at the same time access to the mail server or syslog server (that would still need to be created), if that would be possible.

Would that be a possible setup? Are there any possible issues to bear in mind?

backup

1 Answers

  1. There are various basic approaches:

    1. Switch it - connect it to the LAN switch and filter traffic by ACLs (which the switch would need to support)
    2. Route it - put it in a VLAN of its own and configure the router to filter the traffic you want or don't want (router needs to be fast)
    3. Secure it - using local user configuration or the local NAS firewall/network settings, restrict access as far as possible
    4. Patch it - using either routing, TCP forwarding, or an SMTP relay on the server, enable the NAS to make the connections you need while everything else is kept separate

    Best practice would be a combination of 1. and 2. - a layer 3 switch - plus 3.

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