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2021
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FreeBSD: SSH Server Security Audit&Hardening (maximum score at SSHAudit online test)
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FreeBSD&PHP: How to activate php mail() and send emails from PHP/WordPress (Any CMSs)
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FreeBSD: Setup SoftEther and configure Offshore 100% Logless VPN server (Windows 10 as clients)
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OpenBSD: Setup ssh chat (an SSHd-based chat server)
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2020
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OpenBSD: rcctl-stat – a tiny script to show the state of all services in one-go
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OpenBSD: Secure WireGuard VPN server setup (Windows 10 clients)
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OpenBSD: Block spammers/abusive IP addresses with Pf-badhost. A ‘must have’ security tool!
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OpenBSD: Monster IPs – Let’s jail them!
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IRIX 6.5.22 Emulation: An interesting guide that will help you setup an emulated SGI