Network attacks are often encountered and unavoidable for websites, so each webmaster will use installing firewalls for the server to reduce, defense website is attacked.

　　Server firewalls are usually divided into two types -hardware firewalls and software firewalls. First understand what is hardware firewall and what is software firewall.

　　The hardware firewall is to make the firewall program in the chip. These functions are performed by the hardware. Its essence is to embed the software firewall into the configuration of the hardware. There are generally core requirements for the hardware firewall. The hardware and software of the hardware firewall must be designed separately. It has its dedicated network chip to process the data packet. At the same time, the hardware firewall needs to use a special operating system platform because it needs it Avoid security vulnerabilities caused by general operating systems. Under the special requirements of hardware and software, the hardware firewall has the advantages of high throughput, safety, and faster speed.

　　The software firewall is parasitic on the operating platform. It is a protective barrier between the internal network and the external network through software. Popularly, software firewalls are software products installed on the server. Software firewalls can support a variety of operating systems, such as "Unix, Linux, Sco-Unix, Windows" and so on.

　　The difference between hardware firewall and software firewall

　　It is clear that the understanding of the software and hardware firewall is clearly seen that the hardware firewall is better than the software server in terms of performance and defense. Because the hardware firewall is the advantages of hardware and software, it can reduce the burden on the server CPU and make the route more stable. However, the technology of hardware firewall is higher and the cost of investment is greater. Therefore, the price is naturally more expensive than the software firewall.