recursive dns

. conf first defines an intranet ACLacl my-network {192.168.1.0/24;}; Then define the view for internal users: Aview "A" {match-clients {my-network;}; specify the Local intranet recursion yes; allow recursive query of zone "xiaocui.com" {type master; file "xiaocui.com. zone. A "};}; defines A view for all users: Bview" B "{match-clients {any ;}; all users recursion yes; allow recursive query of zone "xiaocu

import java.util.LinkedList;import java.util.Scanner;import java.util.Stack;//structure of binary treeclass BiTree {BiTree lchild;BiTree rchild;String data;}public class BiTreeTest {static Scanner scanner = new Scanner(System.in);// test case: a b c # # d e # g # # f # # #static BiTree createBiTree(BiTree root) {String data = scanner.next();if (data.equals("#")) {return null;} else {root = new BiTree();root.data = data;root.lchild = createBiTree(root.lchild);root.rchild = createBiTree(root.rchil

, the location of the root is clearly indicated. There are 13 root servers in the world. There are two search methods: recursive and iterative, and DNS search is recursive + iterative. Therefore, the local DNS server must be recursive to the local host, otherwise, the clien

We now have a lot of knowledge about DNS from the previous blog, today we use a comprehensive experiment to string up the previous content to review, this interesting experiment is the private root of DNS. A private root is a DNS root server created by the individual or enterprise itself, which belongs to the creator private and cannot serve as many netizens as t

-Internet data. Valid classes:INInternetCHAOSChaosHESIODMIT Althena Hesiod classANYWildcard (any of the above)*Wildcard (any of the above)-D open the debugging method.-N is equivalent to publishing the/usr/bin/hostnew command. The hostnew command is version 5.2 of the host Command.-R disables recursive processing.-T Type specifies the record Type to be queried. Valid type:AHost Internet addressCNAMEAlias NameHINFOHost CPU and operating system typeKEYS

Most of the network traffic is based on TCP/IP, while TCP/IP traffic is based on IP address, but in the real network access who is willing to use IP address, because the IP address we remember inconvenient. To solve this problem, DNS is available. DNS: Domain Name System users access to the Internet through the input www.luwenju.com actually entered a computer name, the user's computer to the

server responsible for the. com domain. When the server that is responsible for the. com domain receives the request, if it cannot resolve it, it will find a next-level DNS server address (qq.com) to the local DNS server that manages the. com domain. When the local DNS server receives this address, it finds the qq.com domain server, repeats the above action, and

are as follows:• The address resolver is the client, responsible for querying the name servers, interpreting the responses returned from the server, and returning the information to the requester.• The domain name server is a server party that stores and manages the domain name database of the jurisdiction, receives requests from the address resolver, and makes recursive and non-recursive queries according

Every time we enter any domain name in the browser to access a website, we use the Dns protocol to perform a "Domain Name: IP" query. As a command line user, the Nslookup command is the most widely used dns-related command. As a programmer, taking c # as an example, the ip address of a domain name is probably the same as the line "System. net. dns. getHostByName

for the DNS server, basically the query information generated every day is enough. So, we can customize a log system specifically for the purpose of storing DNS-related information.Defines the log system for DNS, which needs to be defined in the DNS configuration file.Where catagory is used to define the source of the

DNS servers. The main purpose of using a DNS forwarder is to reduce the pressure on DNS processing, forward query requests from the DNS server to the forwarder, and benefit from the DNS Forwarder's potential for greater DNS cache

request initiated by the DNS client, the DNS server checks its local cache. If a matched result is returned, the DNS server does not provide an authoritative response to the customer's resolution request, whether positive or negative. DNS resolution is complete. If the DNS

Document directory DNS structure: Header section: Question: Resource Structure: Every time we enter any domain name in the browser to access a website, we use the DNS protocol to perform a "Domain Name: IP" query. As a command line user, the NSLookup command is the most widely used DNS-related command. As a programmer, taking C # as an example, the IP add

Many people do not know how to resolve public domain names on their own DNS servers. Now let's announce the steps. 1. You must have your own domain name. Therefore, go to the domain name registrar to apply for a registered domain name. Try to find a large domain name registrar. com. CN or. CN, you can directly go to the http://www.cnnic.net.cn/to register. Other international domain names can go to http://www.net.cn. Remember, unless you are not techn