/ tags/ hardening

# MikroTik RouterOS under attack: the exploited SSH flaws and what to do nowEN

2026-09-07Alessandro Corbelli~8 min

Two RouterOS flaws, exploited in the wild since 2 September 2026, let anyone take over a MikroTik router with SSH exposed, no credentials needed. Who is at risk, how to check, how to update.

security hardening networking ssh mikrotik routeros

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# What a Bastion Host Is and Why It Makes SSH Access SaferEN

2025-07-08Alessandro Corbelli~8 min

What a bastion host (or jump host) is: the single controlled entry point into a private network, why it shrinks the attack surface, and where it fits in an SSH architecture.

security hardening ssh bastion-host proxyjump

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# Brute Force Attacks: What They Are and How to Defend Against ThemEN

2025-04-10Alessandro Corbelli~7 min

What a brute force attack is, why every exposed service gets them, and the basic defenses: strong passwords and keys, multi-factor authentication, rate limiting, and tools like fail2ban.

security authentication brute-force mfa fail2ban hardening

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