网络安全卫士的得力助手：网络防火墙及配件介绍 在当今数字化时代，网络安全已成为我们日常生活中不可或缺的一部分。为了保护我们的数据和系统免受恶意攻击，网络防火墙成为了网络安全卫士的得力助手。本文将详细介绍网络防火墙及其相关配件。 一、网络防火墙 网络防火墙是一种安全设备，用于监控和过滤网络通信，以防止未经授权的访问和潜在的网络攻击。它通过设置一系列规则和策略，来决定哪些流量可以通过网络，哪些流量应该被阻止。 网络防火墙的主要功能包括： 1. 监控网络流量：实时监控网络中的数据传输，包括传入和传出的流量。 2. 过滤流量：根据预设的规则和策略，过滤掉不符合要求的流量。

3. 阻止恶意攻击：通过识别和拦截恶意流量，防止网络攻击。

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4. 日志记录：记录所有经过防火墙的流量信息，以便后续分析和追踪。 二、网络防火墙配件介绍 1. 安全网关：安全网关是网络防火墙的重要组成部分，用于控制和管理进出网络的流量。它具有高级加密技术，可提供更高级别的安全性。 2. 入侵检测系统（IDS）：IDS是一种安全设备，可以实时监控网络流量，检测并报告潜在的攻击行为。它可以与网络防火墙协同工作，提高整体安全性。 3. 防病毒软件：防病毒软件可以检测和清除网络中的病毒、木马等恶意程序，保护系统免受病毒攻击。 4. 虚拟专用网络（VPN）设备：VPN设备可以提供安全的远程访问通道，保护数据传输的机密性和完整性。 5. 负载均衡器：负载均衡器可以平衡网络负载，提高系统的稳定性和性能。在网络防火墙中，它可以确保流量得到均衡分配，避免单点故障。 三、英文翻译

A Powerful Assistant for Cybersecurity Guard: Introduction to Network Firewalls and Accessories

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In today's digital era, network security has become an indispensable part of our daily life. To protect our data and systems from malicious attacks, network firewalls have become a powerful assistant for cybersecurity guards. This article will introduce network firewalls and their related accessories in detail. I. Network Firewalls A network firewall is a security device that monitors and filters network traffic to prevent unauthorized access and potential network attacks. It sets a series of rules and policies to determine which traffic can pass through the network and which traffic should be blocked. The main functions of a network firewall include: 1. Monitoring network traffic: Real-time monitoring of data transmission in the network, including incoming and outgoing traffic. 2. Filtering traffic: Filtering out traffic that does not meet the requirements based on predefined rules and policies. 3. Preventing malicious attacks: Identifying and intercepting malicious traffic to prevent network attacks. 4. Logging: Recording all traffic information passing through the firewall for subsequent analysis and tracking. II. Introduction to Network Firewall Accessories 1. Security Gateway: The security gateway is an important component of the network firewall, which controls and manages the traffic entering and exiting the network. It has advanced encryption technology to provide a higher level of security. 2. Intrusion Detection System (IDS): IDS is a security device that can monitor network traffic in real time, detect and report potential attacks. It can work together with the network firewall to improve overall security. 3. Anti-virus software: Anti-virus software can detect and remove viruses, Trojans, and other malicious programs in the network to protect the system from virus attacks. 4. Virtual Private Network (VPN) devices: VPN devices provide secure remote access channels to protect the confidentiality and integrity of data transmission. 5. Load Balancer: The load balancer can balance network load, improve system stability and performance. In the network firewall, it can ensure that traffic is evenly distributed to avoid single points of failure.