Abstract
The LAN is often equipped with web servers. At this time, the LAN domain name resolution should be able to access the internal website and be easy to conFig without relying on the LAN export equipment. Based on the DNS protocol, the conventional method is to use dual-domain names, or use a dedicated DNS server, or use bidirectional NAT. These methods are insufficient. Domain name hijacking is a kind of hacker technology, but it can be used to apply domain name resolution in LAN properly. Hijacking can be realized through the DNAT function of net-work devices such as a firewall. The internal website’s domain name can be resolved to the IP address of the local area network by the dedicated DNS server, and other domain name resolution requests can be forwarded to the external DNS server. The method has the advantages of convenience, reducing a load of network exit equipment and no increase in cost.
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