It Internet security is the corners

It Internet security is the cornerstone of e-commerce payment security and the electronic payment process is inseparable from the network. Electronic payment security cannot exist, if there is not secure network environment. Firewall has created a relatively safe trading environment for the Internet. Firewall is a combination of software or hardware device located between internal network and external network. Firewall is a separator, a limiter, and also an analyzer. It controls the communication between the two networks and prevents the external unsafe factors to invade the Internet network by means of putting the security policy into effect compulsively. It is effective to prevent the illegal access for important information resource in order to protect the security of the system. The firewall can control the information flow accessing the network according to the organization's security policy. The firewall itself has strong ability against the attack, so it is provided with a certain security. Therefore, the firewall is the infrastructure which can provide security services of network and achieve security electronic payment.