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Category: OPNsense

About OPNsense

Building a Secure OpenVPN Server on OPNsense — Step-by-Step Practical Guide

Posted on 2025-11-062025-11-11 by Rico

Author: Rico WuEnvironment: OPNsense 25.xUse case: Remote work, branch office connectivity, employee VPN 1️⃣ Why OPNsense + OpenVPN? OpenVPN is an open-source, SSL-based VPN protocol that’s secure, cross-platform, and reliable.OPNsense provides a built-in GUI for managing OpenVPN — allowing administrators to quickly deploy: This makes OPNsense a strong, cost-free VPN gateway for modern hybrid work….

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在 OPNsense 上建立與設定 OpenVPN:完整實務指南

Posted on 2025-11-062025-11-20 by Rico

作者: Rico Wu環境: OPNsense 25.x應用場景: 遠端辦公、跨地分公司連線、行動員工 VPN 一、為什麼選擇 OPNsense + OpenVPN? OpenVPN 是一款開源、安全且穩定的 VPN 解決方案,而 OPNsense 內建完整的 OpenVPN 管理介面,可快速建立: 與傳統 VPN 相比,OpenVPN 使用 TLS/SSL 驗證機制,可確保連線安全並支援跨平台(Windows / macOS / Linux / iOS / Android)。 二、建立 OpenVPN 伺服器(Server) 🔹 步驟 1:建立憑證授權中心(CA) 1️⃣ 前往 System → Trust → Authorities → +Add2️⃣ 設定如下: → 儲存 ✅ 🔹 步驟 2:建立伺服器憑證…

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Deep Packet Power: Enabling Layer-7 Traffic Control on OPNsense

Posted on 2025-11-062025-11-06 by Rico

Author: Rico WuEnvironment: OPNsense 25.x + Zenarmor + SuricataUse case: Enterprise internet access control & application-layer filtering 🧱 1. What Is Layer-7 Control? Traditional firewalls operate mainly at Layer-3 and Layer-4 — controlling traffic based on IP addresses, ports, and protocols.While effective for basic routing and NAT, they can’t tell what the traffic actually is….

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深度封包的力量:在 OPNsense 啟用 Layer 7(L7)應用層流量控制

Posted on 2025-11-062025-11-06 by Rico

作者: Rico Wu環境: OPNsense 25.x + Zenarmor + Suricata應用場景: 企業上網行為管理與應用層封包管控 🧱 一、什麼是 L7 流量控制? 一般防火牆主要運作在 L3(網路層)與 L4(傳輸層),也就是依據 IP、Port、通訊協定 來允許或阻擋流量。這樣能處理連線方向與基本安全,但無法辨識「應用內容」。 L7(Layer 7,應用層)防火牆 能深入檢視封包內容(DPI, Deep Packet Inspection),可根據實際應用類型進行控制,例如: 在企業網路環境中,L7 控制能大幅提升 安全性、效率與使用行為可視化。 ⚙️ 二、OPNsense 如何支援 L7? OPNsense 是基於 FreeBSD + pf 架構的防火牆,其中 pf 防火牆本身僅支援 L3/L4 控制。 但 OPNsense 可透過 插件與整合模組 實現 L7(應用層)控制,常用的三種方式如下: 模組 功能用途 L7 支援程度 備註 Zenarmor (原名…

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Complete Guide: Installing and Configuring OPNsense Firewall on Proxmox VE

Posted on 2025-11-062025-11-06 by Rico

Audience: IT administrators, network engineers, and virtualization enthusiastsEnvironment: Proxmox VE + OPNsense (FreeBSD-based firewall) 📘 1. Why Choose OPNsense? OPNsense is a FreeBSD-based open-source firewall maintained by Deciso.It offers enterprise-grade features — IDS/IPS, traffic shaping, VPN, proxy, and QoS — in a modern web interface with active updates. When running Proxmox VE, OPNsense is one…

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在 Proxmox VE 上安裝與設定 OPNsense 防火牆完整指南

Posted on 2025-11-062025-11-06 by Rico

適用對象:網管人員、IT 維運、虛擬化環境使用者實作環境:Proxmox VE + OPNsense(FreeBSD-based firewall) 📘 一、為什麼選擇 OPNsense? OPNsense 是一款基於 FreeBSD 的開源防火牆系統,由 Deciso 公司維護,擁有企業級功能(如 IDS/IPS、流量監控、VPN、QoS、Proxy 等)。與 pfSense 相比,它的介面更現代化、套件更穩定,且更新頻率高。 如果你的公司正在使用 Proxmox VE(PVE) 進行虛擬化,OPNsense 是最理想的虛擬防火牆解決方案之一。 ⚙️ 二、在 Proxmox 上安裝 OPNsense 1️⃣ 系統需求建議 項目 最低需求 建議配置 CPU 2 Core 2~4 Core(支援 VT-x / AMD-V) RAM 2GB 4~8GB(視流量與 IDS 功能而定) Disk 10GB 20GB 以上 NIC 2 張 一張…

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