Talking about spam firewall products

E-Mail is one of the most essential tools for daily communication, such as quick and easy, but we receive spam email every day far more than normal mail, which brings us a lot of trouble. When a netizen opens ane-mail, it is likely that 8 of the 10 emails he received are spam. An anti-Spam alliance expert elaborated on this phenomenon in detail: in a region of southern Zhejiang Province, there is a small factory producing plastic chopsticks, because there is not much money to advertise, so spend hundreds of of dollars to find a server address to send a message, as long as 1% of people interested in the words, The effect will be similar to doing TV commercials, but spending money is not even 1% of the cost of television advertising.

Network spam has caused us a great deal of harm, waste a lot of network resources, also waste our precious time. Network viruses and spam messages are always the two main aspects of network security. At present, there are a variety of spam solutions, but there are four main types: Client software solutions, remote e-mail filtering services, enterprise software solutions, hardware devices.

The client's software solution is to install the software, now the anti-spam software is fragmented, especially in the country, whether the personal version or server version of the anti-spam software is more from the hands of some personal developers, which the definition of spam is inaccurate, many people to the definition of spam virus. Spam is mainly divided into ad mail, anonymous harassment mail and false mail 3 kinds, the current software is mainly based on the sender address, mail subject or the size of the message to filter. But on the one hand because of the randomness of spam, it is difficult to grasp the exact characteristics of spam, on the other hand, because most of the anti-spam tools themselves design errors, resulting in the difficult to completely prevent the status of junk mail. At the same time, for a large enterprise, a anti-spam software is difficult to live in thousands of days, a wide range of spam messages.

At present, for enterprise users, most of the use of advanced hardware firewall, individual users use software firewall. What are the advantages of a hardware firewall versus a software firewall? The hardware firewall uses the specialized hardware equipment, then integrates the manufacturer's specialized firewall software. From a functional perspective, the hardware firewall built-in security software, the use of exclusive or enhanced operating system, easy management, easy replacement, hardware and software with a more fixed. The high efficiency of the hardware firewall solves the contradiction between the firewall efficiency and the performance, and can achieve linearity.

Software firewall is generally based on an operating system platform development, directly on the computer software installation and configuration. Due to the diversity of customer platforms, software firewalls need to support multiple operating systems, such as Unix, Linux, Sco-unix, windows, etc., large code, high installation cost, high cost of after-sale support and low efficiency.

1, performance advantages. The performance of the firewall is critical to the firewall. It determines the amount of data traffic that passes through the firewall every second. The unit is BPS, ranging from dozens of m to hundreds of M, and gigabit firewalls even reach several G firewalls. Software firewalls are unlikely to achieve this high rate.