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This question already has an answer here:

First, some background: I have a web server (Linux) which I run from my house. I have a relatively small website, and have just set up SSH. While modifying the firewall, I had the choice to pick either A) Allow access from anywhere or, B) Restrict to 192.168.0.0/16. I went with option B.

I spend a lot of time outside of home, however, and this restriction is getting annoying. I know that it likely adds some extra security, so I don;t know what to do.

My question is: How (in)secure is allowing anybody to try to connect to SSH? Does the risk outweigh the benefits of being able to work away from home?

marked as duplicate by Community Dec 14 '18 at 0:38

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  • Please research a little before asking such question. There are tons of documents and web results that can answer your question. – tech_enthusiast Dec 14 '18 at 0:17
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The second you open up a SSH port to the public web it will have multiple brute force / default credentials attempts against it. Just automated tools trying to get access - its up to you to weigh the risks, but if you go ahead insure good security hygiene. Turn off passwords based auth - limited retries etc.

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