External access control method, gateway and DNS server
A DNS server and access control technology, applied in the field of network communication, can solve the problem of not being able to effectively control the access control of different gateway domain names and IP addresses, and achieve the effect of ensuring validity
Active Publication Date: 2014-12-10
湖州帷幄知识产权运营有限公司
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Problems solved by technology
[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide an external access control method, gateway, and DNS server, which are used to solve the problem of not being able to effectively compete for different gateways to simultaneously perform network access in the prior art. The problem of access control of the domain name and IP address of the restricted object
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[0031] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0032] see Figure 1 to Figure 5. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to under...
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The invention provides an external access control method, a gateway and a DNS server. The external access control method comprises the following steps: the configuration of the network access limitation object with a URL format is received, and the type of the network access limitation object is judged; when the type is an IP address, an IP data packet filtering rule, corresponding to the IP address, is generated; when the type is a domain name, the IP data packet filtering rule, corresponding to the domain name, is generated, the IP address, corresponding to the domain name, is searched in the gateway local caching or in the DNS server, and the IP data packet filtering rule, corresponding to the IP address, is generated according to the searching results. According to the external access control method, the gateway and the DNS server, provided by the invention, the synchronous control of the domain name and the IP address of the network access limitation object can be realized through respectively directing at various gateways, and the effectiveness, comprehensiveness and flexibility of the control can be guaranteed.
Description
technical field [0001] The invention relates to the field of network communication, in particular to an external access control method, a gateway and a DNS server. Background technique [0002] URL, also known as web page address, is a standard resource address on the Internet, and is used to completely describe the address of web pages and other resources on the Internet. Every web page on the Internet has a unique URL address name identification, usually called a URL address, this address can be a local disk, or a computer on the LAN, and more often a site on the Internet . To put it simply, a URL is a web address, commonly known as a "web address". [0003] URL filtering is an important access control method of the current firewall, and URL control is basically limited to the domain name level. The problem brought about by this is that before accessing, use the IP address resolution tool to resolve the IP address and then use the IP address to access, so that the URL d...
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IPC IPC(8): H04L29/12
Inventor 凌灵
Owner 湖州帷幄知识产权运营有限公司