What is a Firewall?
https://www.youtube.com/watch?v=kDEX1HXybrU
定义/definition
A firewall is a system that is designed to prevent unauthorized access from entering a private network by filtering the information that comes in from the internet.
目的/purpose
A firewall's purpose is to create a safety barrier between a private network and the public internet because out on the internet there is always going to be hackers and malicious traffic that may try to penetrate into a private network to cause harm. A firewall is the main component on a network to prevent this.
对大企业的特殊作用
Why is a firewall especially important to large organizations?
现实生活中建筑物中的防火墙起到什么作用
How does a firewall in a building help safeguard the security in the event of an actual fire?
动画视频中通行规则限制了哪个IP数据？
In the example raised by the animation video concerning the access permission/control rules, which IP address is denied access into the organization?
防火墙是基于哪些元素进行设定的？
Firewall rules can be based on ?
IP addr, domain names, protocols, programs & keywords
视频中提到哪几种防火墙类型？
How many types of firewalls are mentioned in the video, and what are they?
- Host-based firewall, the software that is installed on a single computer.
- Network-based firewall, software and hardware combined that can protect the entire network, and large organizations always use stand-alone firewall, and smaller organizations use routers coming with built-in firewalls, and in some cases organizations may deploy cloud firewall in the larger-scale cloud infrastructure.
如何将企业的网络安保提升到最大效果？
How to ensure maximum network protection for an organization?