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This is a somewhat longer question, as this is unfamiliar ground for me, so please bear with me I'll try to be specific and explain my reasoning, so that it is useful to more users. I've put the most pressing questions in bold-face.
I have a 2-bay nas (Ts251B; 'Local Nas') and a 1-bay nas (Ts112P, 'Remote Nas') and I'm trying to set them up so that my data is most secure. The Ts251B is going to be my main (on-site) nas, the Ts112P will be located off-site and won't usually be accessed by users directly.
Now, my initial thoughts are:
- Use drives 1 of the Local Nas as the main/master drive for my data.
- Sync this drive to the Remote Nas. Sync-Option 1: one-way sync with RTRR (1x/day) (I guess one-way syncing isn't really 'syncing' in the strict sence of the word, but I'll roll with it). Sync-Option 2: two-way sync with Syncthing (~instantaneously). Operationally there's no big difference between one- and two-way syncing, as I'll not usually make changes directly to the Remote Nas. I have a slight preference for Option 2, in case the Local Nas might be unavailable at times.
- Use drive 2 of the Local Nas for daily, weekly, monthly etc. snapshots of its first drive.
However, I'm now thinking about ransomware attacks, and how well-protected this setup would be against those.
What I'm trying to figure out is, what would happen if a malicious third party gains access to one of the devices, and is able to encrypt its drives.
- Let's first consider the Local Nas is compromised.
- If they encrypt drive 1, is one of my two proposed Sync-Options more robust/secure against these changes being propagated to the Remote Nas? If the whole drive is garbled, I would expect both Sync-Options to stop syncing, as the folders it is configured to sync are no longer available. However, if individual files are garbled, while keeping the folder structure intact, these changes would get propagated. Is that correct? Is there a way to protect against this?
- If the answer to (1a) is no, as I expect: would they be able to 'see' and encrypt BOTH drives of the Local Nas? If only drive 1 is accessible to them, and they encrypt it, its data is still recoverable from drive 2, even if a snapshot has been made. If however, both drives are accessible and encrypted, the situation is more serious. My question: is it possible to 'disconnect' or make unaccessible the snapshot drive of the Local Nas during normal operation? Is this common practice? Is there another solution to isolate the threat against each of the drives?
- If the answer to (1b) is also no, would there be more protection in using an externally (usb) connected hard drive, instead of internal drive 2, for the snapshots?
- Now let's consider the Remote Nas is compromised. (It's older but should receive security updates for another 3 years, so I'm assuming this isn't any more likely than the scenario above.)
- In this case, I assume it's very preferable to be using Sync-Option 1, as the changes are never propagated to the Local Nas. If the whole drive is garbled, I assume RTRR would throw me an error; if it's individual files, I assume the encryption is simply overwritten during the next replication. Is that correct? Would I even find out about the attack in that case? This is important because the Remote Nas is no longer reliable in that case and needs attention.
- Either way, even when using Sync-Option 2, and even when the encrypted files get synced back to drive 1 of the Local Nas, I would still always have the snapshots on drive 2. Is that correct?
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Edit: changed randsome to ransom
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Gunnerman Books was established in 1978 as a mail order business specializing in vintage out of print sporting books by Larry and Carol Barnes. Mythgard mac os. Gunnerman Books was named after one the Derrydale Press titles 'Gunnerman' by Horatio Bigelow. Deadcolors mac os. The business continues today under the direction of Carol Barnes.
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Gunnerman Press was founded in 1985 as a reprint business of classic sporting titles. Some of the books reprinted were four of the Havilah Babcock title: I Don't Want to Shoot an Elephant, Jaybirds Go to Hell on Friday, The Education of Pretty Boy, and the Best of Babcock as well as Gough Thomas's (G. https://nashville-deposit-ctz-mania-sloto-777.peatix.com. T. Garwood), Gun Book, Francotte Gun Catalog, John Alden Knight's Ruffed Grouse and Woodcock Books, S. T. Hammond, My Friend the Partridge, T. S. Van Dyke, The Still Hunter as well as other titles.
