Course Intermediate  3510

Course Introduction：A firewall is a system used to control access to a computer network. Firewalls can isolate risk areas from safe access areas and prevent unpredictable or unauthorized external access from invading the internal network. Learning firewalls under Linux is not only for these reasons. The most important thing is that during the learning stage, through the use of firewalls, you can better master the principles of network communication, become familiar with the operation of Linux, and master network services and network protocols. It is also important for learning Linux operation and maintenance or Cybersecurity is helpful. There are many firewalls under Linux, including iptables, firewalld, selinux, tcp_warppers, etc. This course summarizes these firewall-related technologies.

Course Intermediate  11333

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17638

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Introduction：The firewall firewall firewalld service has two working modes: CLI and GUI. Compared with iptables, firewall supports dynamic updates and introduces the concept of zone. In short, a zone refers to a set of firewall policies predefined by the firewall, which allows these policies to be quickly switched between firewalls, thereby significantly improving the switching efficiency and application speed of the firewall. The zone default policy rule trusted allows all packets home to deny incoming traffic, but the ssh, mdns, ipp-client, and dhcpv6-client services are allowed to pass through the internal equivalent of the home zone work and deny incoming traffic, but

2024-02-19 comment 0  1180

Course Introduction：iphone call firewall: iphone call firewall PHP ASP firewall: <? $ASPservername: This variable must have an IP in the /etc/hosts file. $ASPport: ASP file server port number. $ASPpath: ASP file path on the server side. $ ASPfile: ASP file name $ASPurlr

2016-07-29 comment 0  1206

Course Introduction：Below, the centos system tutorial column will introduce the CentOS firewalld (firewall) command to everyone. I hope it will be helpful to friends in need! 1. Check the firewalld status and check the firewalld service status command: systemctl status firewalld..

2020-07-03 comment 0  2769

Course Introduction：How to check the firewall status in Linux: 1. iptables firewall, check the firewall status, the code is [service iptables status]; 2. firewall firewall, the code is [firewall-cmd --state].

2020-12-30 comment 0  164985

Course Introduction：What is comodo firewall 3.0_xp_vista_x32.exe doing on my computer? comodo firewall 3.0_xp_vista_x32.exe is a process belonging to COMODO Firewall Installer from Comodo. Non-system processes like comodo firewall 3.0_xp_vista_x32.exe originate fr

2024-10-04 comment 0  1139