Linux Red Hat 5 DNS Server multiple labs detailed setupRequired Packages: ? bind-9.3.3-7.el5.i386.rpm ? Provide main procedures and related documents ? bind-utils-9.3.3-7.el5.i386.rpm ? Provides test tools for DNS servers (such as nslookup, dig, etc.) ? bind-chroot-9.3.3-7.el5.i386.rpm ? Provides a spoofed root directory to enhance its security (var/named/chroot/
DNS stands for Domain Name System, which is the domain name resolution system. It helps you find a path on the Internet. Its function on the Internet is to convert a domain name into an IP address that can be recognized by the network. At present, domestic telecom operators use DNS hijacking and DNS pollution to interfere with normal internet access and prevent u
3288 named 514u IPv4 17547 0t0 UDP dns.hngd.com:domainNamed 3288 named 515u IPv6 17549 0t0 UDP localhost:domain[[Email protected] Master ~]# netstat-anptlu |grep named//This command can also get the same effect9. Using Nslookup to detect DNS[[Email protected] Master ~]# nslookup>www.hngd.comserver:192.168.100.20address:192.168.100.20#53Name:www.hngd.comaddress:192.168.100.11> 192.168.100.20server:192.168.1
Google's free DNS server is 8.8.8.8.8, and the secondary server is 8.8.4.4.
The primary DNS server of opendns is 208.67.222.222, and the secondary server is 208.67.220.220.
allowed to write in the data/directory: directory "/var/named"; "Working" directory //listen-on Port : {any;}; listen-on port 127.0.0.1;}; LISTEN-ON-V6 Port: (any ;}; LISTEN-ON-V6 Port : {: 1;};};This is our named.conf minimized configuration, specifying the named working directory, specifying IPV4, IPV6 port, and IP addressIv. Configuring the domain primary
method that has been reproduced before. The root cause of this method is to modify/etc/dhcp3/dhclient. conf to add the DNS server. Now I have configured eth0 as a static address, so I cannot use it. This problem is found because usepeerdns in/etc/ppp/peers/dsl-provide needs to be commented out in this method, but I don't have this file at all! After testing and restarting n times, I finally found a solutio
is installed. The releasegz is bind-9.4.2.tar.gz.For ease of use in other operating systems, we still install it in the source code package. First from the ISC home page (http://www.isc.org/index.pl? /Sw/bind/index. php) software package.Decompress:
# Pwd/Opt/wacos/encle# Gunzip bind-9.4.2.tar.gz# Tar-xvf bind-9.4.2.tar
Configure compilation and installation. BIND is normally installed in the/usr/local directory, but you can adjust the -- prefix parameter settings. In this example,
.(4) record the cache and return the path to the user.Note: In the system, we can track the path through the dig command.Workflow:2. Build a DNS serverToday, we are going to build a DNS server by ourselves. Such requirements are still available within the company.First, find the packages that install dns:Install the dns
Immediately following the previous article, this chapter explains the configuration from the server. from the server configuration process:1. Install DNS-related packages[[emailprotected]~]#yum-yinstallbind #安装bind包/etc/ logrotate.d/named/etc/named.conf #主配置文件/etc/named.iscdlv.key# Bind key File/etc/named.rfc1912.zones #区域配置文件 (included with the include directiv
I have already studied bind's cache dns server. Today I have studied dnsmasq's dns Cache and found that the configuration of dnsmasq is much simpler. It is better for new users to get started with complex configurations than those of bind, after all, it is difficult to maintain the service after it is used locally. Check the operation.System: CentOS 5.4Ip: 192.16
configuration1. Installation1) package Name: Bind2) service Name: named3) port number: TCP 534) Main configuration file:/etc/named.conf5) Zone Profile:/etc/named.rfc1912.zone6) Data configuration file:Forward parsing configuration file:/var/named/named.localhostReverse parsing configuration file:/var/named/named.empty2. DNS server configuration (test domain: test.com; Test network segment: 192.168.136.0)1)
Final preparations for Lync Server===dns Record Preparation1) Turn off the IPV6 of all servers first650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M00/84/8E/wKiom1eUf1miflHuAABAZDcZSGk894.png "style=" float: none; "title=" 2016-07-24_102936.png "alt=" Wkiom1euf1miflhuaabazdczsgk894.png "/>2). Pool.jacksi.win (If you have two servers in the pool, you need
up the domain Name System (DNS). To be able to use single label names, many networks have deployed Windows Internet Name Service (WINS) technology and WINS servers in their environments. As a name Resolution Protocol, WINS is an alternate option for DNS. It is an old service that uses NetBIOS (NetBT) on TCP/IP. WINS and NetBT do not support the Internet Protocol version 6 (
stored (must be created manually );
Listen-on-v6 {any ;}; support ipv6 requests;
Forwarders {
Your. upper. DNS. address;
}; Specifies the forward DNS. If the domain name cannot be resolved on the local machine, it will be forwarded to the forward DNS for resolution.
Dump-file "/etc/named_dump.db"; specifies the locati
controlNote: Turn off the firewall of each machine first (the virtual machine network is simply set to the bridge mode to the common network with the host)Domain Control terminal1, configure the domain control IP,ipv6 removed, because the DNS server is installed on the domain control, so the preferred DNS
host domain name.
Iii. Enabling and Testing
Start the service:
#/Etc/init. d/named startd
Test tool:
Linux: host dig ping
Win: ping nslookup
Customer Service Configuration:Linux: Modify/etc/resolv. confWin: Double-click Local Connection ==open TCP/IP properties ==select the custom DNS server addressIv. SummaryThe DNS Service looks simple, but it is actual
configure the // isc bind named (8) DNS server as a caching only nameserver // (as a localhost DNS resolver only ). /// see/usr/share/doc/Bind */sample/For example named configurationfiles. /// do not edit this file-use system-config-bind or an editor // to create named. conf-edits to this file will be lost on // caching-nameserver package upgrade. // options {L
. rfc1912.zones> named. conf
Rm named. caching-nameserver.conf named. rfc1912.zones> named. conf
[Root @ maluyao ~] Ln-s/var/named/chroot/etc/named. conf/etc/named. conf
The above step is to merge named. caching-nameserver.conf named. rfc1912.zones into a file (/var/named/chrrot/etc/named. conf) and then delete it. In actual operation, it is best not to delete the files, but to move the two files to another location for backup. For convenience, a symbolic link is made under/etc.
Modify the nam
accessing the Internet services and Web sites can be in a number of different links dynamic allocation and load balancing, which is also known as outbound traffic load balance.
External users of the Internet can also dynamically balance the distribution on multiple links while accessing internal Web sites and application systems externally. And can automatically switch to another link to the server and application system when a link is interrupted,
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