By default, OpenWRT does not allow IPv6 outbound traffic. This article will guide you through configuring the firewall to permit IPv6 outbound traffic. Testing First, ensure that your ISP is not blocking your IPv6 traffic. The testing method is quite simple; generally, OpenWRT does not block ICMP traffic. You can obtain your local IPv6 address … Read more
Some friends have commented on how to distribute and network community switches?This topic has also been discussed in our weak current VIP technical group.In this issue, let’s understand about how to network community networks? Distribution of switches? Analysis of the community switch networking structure 1. The access layer switches use a hundred megabit to the … Read more
Abstract: This article explains how to log incoming and outgoing dropped firewall packets. When your IPTables rules are not working as expected, you may need to log the dropped packets for troubleshooting. This article describes how to log incoming and outgoing dropped firewall packets. Logging All Dropped Incoming Packets First, we need to understand how … Read more
In the battlefield of network security, firewalls act as vigilant sentinels, weaving rules with code to protect the borders of the digital world. When you hold a Linux system in your hands, this operating system, inherently equipped with “security genes,” has already prepared various firewall tools for you. Let us break down the core value … Read more
Editor Recommended This issue’s topic – What was your initial motivation for learning programming? Computer Networking – Juniper Firewall Basic Introduction Course and PDF Click here“Read the original text” to exchange for the download link
This article is an excellent piece from the KX Forum Author ID on KX Forum: xiaoduoduo himqtt is the first complete source high-performance MQTT IoT firewall – MQTT Application FireWall, written in C language, using epoll mode to support hundreds of thousands of high concurrent connections for IoT, and is compatible with some ModSecurity rules. … Read more
Linux | Red Hat Certification | IT Technology | Operations Engineer 👇 1000-person technical exchange QQ group Note [Public Account] for faster access 1. Firewall Service Management View current active services firewall-cmd –list-service[root@localhost ~]# firewall-cmd –set-default-zone=publicsuccess[root@localhost ~]# firewall-cmd –list-servicessh dhcpv6-client[root@localhost ~]# firewall-cmd –set-default-zone=homesuccess[root@localhost ~]# firewall-cmd –list-servicessh mdns samba-client dhcpv6-client# This allows for a more intuitive … Read more
1. Introduction As Industrial Control Systems (ICS) face potential threats from remote maintenance, unauthorized operations, malware intrusions, illegal access, and internet connectivity, there are certain vulnerabilities in network boundaries, access control, communication protection, malicious operation control, and malware protection. Therefore, a single protective measure is no longer effective. ICS, as the core of industrial infrastructure, … Read more
Firewall filtering rules in OpenWrt include: 1. Input Filtering Rules: Determine which packets can enter the home network through the router’s network interface, and which packets need to be blocked or discarded. 2. Output Filtering Rules: Determine which packets can leave the home network through the router’s network interface, and which packets need to be … Read more
1. Add a New AP Access Point Go to Network –> Wireless page and click the add button for your wireless interface. Create a new network interface in the network section (other settings can be customized). 2. Edit the New LAN Interface After saving and applying, a new interface will appear in Network –> Interfaces, … Read more