best ipv6 dns servers

The premise for the commercial use of IPv6 is that IPv4 addresses are exhausted. For this reason, we urgently need the IPv6 protocol to improve this situation. So how does IPv6 distribute DNS servers? Next we will analyze the principles in depth. Hope to help you. What is th

to some applications Program When an HTTP request is sent, the IPv6 DNS lookup always times out before IPv4 intervention (usually reported to take about 30 seconds), which is also a common cause of slow DNS lookup process. 3) Some people reported: "One day, the O M Department declared that the company's network had all enable

Many websites, such as Google, are both IPv4 and IPv6 Dual-line access. www.google.com resolution corresponds to many IP addresses, both IPv4 and IPv6. By default, the DNS server returns multiple IP addresses, while the local machine automatically selects the host based on the response speed of each address. Generally, people will modify the hosts file in the

One, the role of domain from DNS serverAs we mentioned in our previous essay, there are generally three types of DNS servers, one is primary DNS server (primary DNS server), one is secondary DNS server (from

"Linux.net" in {Type slave; Set to secondary typeFile "Slaves/linux.net"; Specifies the file name and location of the replicated zone database (the reason is "slaves/linux.net" becauseMasters {192.168.10.10;}; When the secondary DNS server is configured, the secondary server automatically replicates the forward zone database files from the primary server and}; Reverse zone database file to secondary server/var/named/chroot/var/named/slaves)Zone "10.1

security reasons, the primary server does not allow any DNS servers to replicate data from its own zone, and by default only DNS servers in this zone are allowed to be secondary DNS servers. As the following illustration shows, s

There is a situation is that my QQ can continue to log in and can upload information, but my web page is not open, this is due to the use of QQ IP to the transmission of information between IP, the use of the UDP protocol, instead of similar to the login network address, the use of the domain name is converted to an IP address, DNS resolution is required to transfer addresses for IP addresses, so DNS cannot

=" Sohu.net.zone.png "style=" Float:none "src=" http://s3.51cto.com/wyfs02/M00/6B/E3/ Wkiom1u44ydcr9hwaadeowr3wgi440.jpg "alt=" Wkiom1u44ydcr9hwaadeowr3wgi440.jpg "/>DNS domain resolution file:/var/named/chroot/var/named/5.6.7.arpa650) this.width=650; "title=" 5.6.7.arpa.png "style=" Float:none "src=" http://s3.51cto.com/wyfs02/M00/6B/DF/ Wkiol1u45h6rjjigaacrgsdgqcw215.jpg "alt=" Wkiol1u45h6rjjigaacrgsdgqcw215.jpg "/>Above configuration complete must

DNS knowledge: 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/2015443221-0.jpg "style =" float: none; "title =" aa.jpg "alt =" 215806990.jpg"/> 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/2015445355-1.jpg "style =" float: none; "title =" bb.jpg "alt =" 215808235.jpg"/> 650) this. width = 650; "src =" http://www.bkjia.com/uploads/allimg/131227/201544JF-2.jpg "style =" float: none; "title =" cc.

I was strange, in the Win32 project to import the # include Inet_ntop (): Converts an IPV4 or IPV6 Internet network address to a string in Internet standard format.const char *inet_ntop (int af, const void *SRC, char *dst, socklen_t cnt) { if (af = = af_inet) { struct sockaddr _in in; memset (in, 0, sizeof (in)); in.sin_family = af_inet; memcpy (in.sin_addr, SRC, sizeof (struct in_addr)); Getnameinfo (struct so

I. Planning INSTRUCTIONS: Host A: Dual NIC 192.168.1.7--> mydomain.org Primary Domain name server 192.168.10.7--> myzone.org The primary domain name server, which has two subdomains, for market.myzone.org and develog.myzone.org Host B: Dual NIC 192.168.1.6--> mydomain.org Auxiliary domain name server 192.168.10.6--> market.myzone.org Sub-domain name server Both servers have DNS-independent logs for logging

DNS server found on log APR 18:39:54 Landnsbak named[30011]: Formerr resolving ' ns-cnc2.qq.com/aaaa/in ': 125.39.57.100#53APR 18:39:54 Landnsbak named[30011]: Formerr resolving ' ns-cnc2.qq.com/aaaa/in ': 111.161.107.195#53APR 18:39:54 Landnsbak named[30011]: Formerr resolving ' ns-cnc1.qq.com/aaaa/in ': 111.161.107.195#53APR 18:39:54 Landnsbak named[30011]: Formerr resolving ' ns-cnc1.qq.com/aaaa/in ': 125.39.57.100#53APR 18:39:54 Landnsbak named[30

???? ? ? ? ? In NS ?? Lenovo-m8400-01.example.com.???? F. F ??? In PTR? Lenovo-m8400-01.example.com. ???? # Chgrp named forward. Zone ???? # Chgrp named reverse. Zone ???? # Service named start Verify Configuration ???? [[Email protected] named] # Dig lenovo-m8400-01.example.com AAAA ???? ; ??? ; Global Options: + cmd??? ; Got answer:??? ;-> Header ??? ; Flags: qr aa rd ra; query: 1, answer: 1, authority: 1, Additional: 0 ??? ; Question Section:??? ; Lenovo-m8400-01.example.com. In AAAA ??? ;

I. Planning INSTRUCTIONS: Host A: Dual NIC 192.168.1.7--> mydomain.org Primary Domain name server 192.168.10.7--> myzone.org The primary domain name server, which has two subdomains, for market.myzone.org and develog.myzone.org Host B: Dual NIC 192.168.1.6--> mydomain.org Auxiliary domain name server 192.168.10.6--> market.myzone.org Sub-domain name server Both servers have DNS-independent logs for l

1. Using DNS Forwarders DNS forwarders are for other DNS servers The DNS server that completes the DNS query. The primary purpose of using DNS forwarders is to mitigate the pressure o

DNS ServerIt is a domain name system or Domain Name Service. The domain name system assigns domain name addresses and IP addresses to hosts on the Internet. DNS software is a target that hackers are keen on and may cause security problems. This article provides 10 most effective methods to protect DNS servers. 1. Use a

1. Nslookup (name server lookup): a tool used to query Internet domain name information or diagnose DNS server problems. Nslookup can specify the query type. You can check the DNS record survival time and specify the DNS server to be used for explanation. Nslookup is a command line tool that monitors whether the DNS se

Welcome to the Windows community forum, and interact with 3 million technical staff to access the DNS software, which is a target of cyberattacks and may cause security problems. This article provides 10 most effective methods to protect DNS servers. 1. Using a DNS forwarder is a D