Comment on How to Setup a Secure Ubuntu Home Server: A Complete Guide

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emhl@feddit.org ⁨1⁩ ⁨day⁩ ago

Privileged ports can be used by processes that are running without root permissions. So if the sshd process would crash or stop for some other reason, any malicious user process could pretend to be the real ssh server without privilege escalation. To be fair this isn’t really a concern for single user systems. But setting up fail2ban or only making ssh accessible from a local network or VPN would probably be a more helpful hardenening step

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