Which SSH configuration is a widely recommended hardening step on Linux servers?

Problem Statement

Explanation

Disabling direct root login reduces brute-force risk and audit ambiguity. Key-based authentication is stronger than passwords and enables MFA add-ons. Combine with allowlists, modern ciphers, and fail2ban or equivalent.

Code Solution

SolutionRead Only

In /etc/ssh/sshd_config:
PermitRootLogin no
PasswordAuthentication no
PubkeyAuthentication yes

Practice Sets

This question appears in the following practice sets:

Hardening & Defense

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Which SSH configuration is a widely recommended hardening step on Linux servers?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Which SSH configuration is a widely recommended hardening step on Linux servers?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

What does the CIA triad stand for in information security?

What is the primary purpose of a firewall in network security?

Which device or service filters HTTP(S) traffic specifically to protect web applications?

What best describes an SQL injection attack?

What principle underpins the Zero Trust security model?

More from System Security

Master Interviews
Anywhere, Anytime