Anti-Spam New Idea: Switch defense Solution

Source: http://www.coolersky.com

Spam has a significant impact on information security, work efficiency, capital costs, and end-user services, and has become one of the greatest challenges facing enterprises today. To combat spam, you must be able to expand the innovative methods to block Spam with high cost effectiveness as spam grows. Application Switch anti-spam is to identify and block spam on the network based on making full use of the network and application exchange intelligence.
Currently, spam has become a threat to the Internet and is becoming increasingly popular. Research shows that the current spam accounts for about 70% of the total email information. The traditional host-and content-based spam processing system is used to combat spam by checking, filtering, and verifying. Although these solutions are necessary, their scalability is far from keeping up with the dramatic increase in the number of spam mails. To effectively combat spam and expand as it increases, enterprises and service providers need a new network-based smart, cost-effective, and scalable solution to supplement traditional spam processing systems.
Compared with server hosts, the network is more efficient, more secure, more scalable, and more cost-effective. Therefore, the best way to control spam is to make full use of the basic advantages of the Internet and enhance its intelligence on spam.
Although the network-based solution cannot completely eliminate spam, it can significantly reduce the number of spam mails entering the mail system and minimize the risk of direct exposure of traditional spam systems. The number of spams to be processed by the spam system is also significantly reduced, which is extended at a relatively low cost.
Assume a new role
In the end of 1990s, application switches Integrated Application Intelligence and security functions in the network helped solve the availability, scalability and security problems of key business applications. For many years, application switches have been used as load balancing and security devices to protect key applications and server groups.
Now, application switches have become an important role in highly scalable and network-based spam defense solutions. At the network layer, it can directly reject connections based on whether the email sending server is in the "Blacklist" of spam emails. While Blocking spam, they also perform load balancing on the email server, spam system, and virus detection devices to improve the scalability and security of the email system. These switches can also prevent email systems from DoS attacks and prevent these attacks at the network layer before vulnerable and expensive host resources are wasted.
The Spam defense solution of the Application Switch can enhance the email system in the following three aspects:
1. Block emails from harmful sources at the network layer to reduce the pressure on the email server or the spam system;
2. emails from suspicious sources are transparently redirected to devices dedicated to spam and virus processing to optimize resource usage, and more precisely help expand Content-based solutions;
3. Provides Server Load balancer, content exchange, and security functions to expand the email server and email virus gateway devices and ensure their security.
In terms of Network-layer anti-spam, application switches have irreplaceable functions of other network products, including:
Policy execution and Access Control
L3 switches and routers use hardware-based access control lists (ACLs) to provide line rate access control. However, there are two main problems with using the traditional ACL to block spam: first, the number of ACL entries is still small compared with the number of spam source, because the spam list can reach millions; second, managing the access control list is not a real-time operation process. It may take several hours to download and apply a new access policy, this allows spam to take a long time to access the email server.
Application switches provide high-performance access control and policy execution capabilities. Currently, Application Switch IP address prefixes of some manufacturers can be expanded to 5 million. The Application Switch also provides the Real-Time Policy List Management function. Therefore, when the policy list is adjusted, the interruption time of the spam blocking operation is close to zero, this ensures that no time is left for spam to enter the mail infrastructure.
Source classification and transparent redirection
Ideally, all external email sources can be easily identified as legitimate email sources and spam sources. The general access control method can fully meet the requirements for Blocking spam. However, not all emails can be identified by simply looking at the source host. The Application Switch can transparently intercept mail Information and redirect some source emails to anti-spam and virus servers.
Server Load balancer, application switching, and security
The Application Switch can send user requests to the best server in the server group. During server selection, the availability, load, response time, and other performance indicators of the server are comprehensively considered, to provide the best response time and availability. In addition to Server Load balancer, Server Load balancer for content-based spam and virus detection devices can also expand the performance of these devices.
High returns
The Application Switch can minimize the utilization of email servers, eliminate service interruptions caused by spam flooding or DoS attacks, and expand the mail system as needed, to provide quick ROI. Application switches can also simplify application and server group management to improve work efficiency and help save valuable capital and operating budget to address other IT needs.
Server group security
In addition to spam, high-speed DoS and other attacks pose security threats to enterprises. In this case, the Application Switch stands out as an optional device, providing security for applications and server groups for demanding customers, and further improving anti-spam solutions. This application switch, designed specifically to provide high-performance applications, can guard against and defeat attacks of several Gigabit rates.
Anti-Virus scalability
The scalability of applications and server groups is the foundation for sustainable business development. The Spam defense solution of application switches can meet this requirement in a cost-effective and transparent manner. The Application Switch can balance the load of multiple servers to provide unlimited and scalable email applications.
By frustrating spam at the network layer and redirecting suspicious information to dedicated resources for further checks, the application switch can maximize the overall utilization, and increase the available capacity for processing valid application traffic.
Comments from reporters:
The Application Switch anti-spam effectively supplements Content-based anti-spam and anti-virus solutions, and helps service providers and enterprises create secure, scalable, and high-performance email infrastructure. In addition to anti-spam, the Application Switch also provides comprehensive application infrastructure security features by defeating Denial-of-Service and other attacks at a rate of several gigabytes.