what netmask

In Linux, how can I modify the IP address information is always changed using ifconfig, and always had to be redone after restart. If you modify the configuration file, you don't have to worry about it ~ A. modify the IP address to take effect

I have written a series of articles. here I will summarize them in a single article for ease of viewing. This article targets Ubuntu1310server. Host installation I have written a series of articles. here I will summarize them in a single article for

Article title: detailed analysis of Linux system network configuration. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and

Installation system: centos_6.5Sed-i '/selinux/s/enforcing/disabled/'/etc/selinux/configSetenforce 0Chkconfig iptables offService Iptables StopRPM-UVH ' http://mirrors.ustc.edu.cn/epel/6/x86_64/epel-release-6-8.noarch.rpm 'Yum install-y Cobbler tftp

The JSOUP parse html (xml) code section is very simple, and has a powerful selector to obtain html page elements, there are also a variety of ways to read html files: such as remote reading from the server, read local html; The following are two

1. Connect a Linux host to the network and need to configure network-related settingsGenerally includes:Host NameIp/netmaskRouting: Default gatewayDNS ServerPrimary DNS ServerSecondary DNS serverSecond time DNS server2. Static

Ext.: http://blog.csdn.net/turkeyzhou/article/details/16971225Configure NIC IP aliases under Linux what is an IP alias?In the words of Windows, you configure multiple IPs for a network card.What is the occasion to add IP aliases?Web needs, multi-IP

1.ifconfig Interface Up/down/mtu/netmask/broadcast Ifconfig eth0 192.168.1.1 #不加参数, automatically add masks by standard A/B/C class Ifconfig eth0 192.168.100.100 netmask 255.255.252.0 MTU 8000 Ifconfig eth0:0 192.168.100.101 #给一张网卡添加多个ip

What is an IP alias?In the words of Windows, you configure multiple IPs for a network card.When do I add IP aliases to what occasions?Web needs, multi-IP access testing, specific software for multiple IP needs ... and so on.HowHere are a few

LVS Cluster has DR, TUN, Nat three configuration mode, can be the WWW service, FTP services, mail services, such as load balancing, the following through the construction of the WWW service load Balancer instance, describes the DR model based on the

the working mechanism and basic function of squid Large server sites are mostly Unix-type operating systems, and it's important to understand that Unix.linux inherits all the features of Unix, so it's important to know about Linux. Squid is the most

The Ip2long IP address is converted to an integer type.Long2ip integer data is converted to IP. The subnet mask is converted to a mask length mode:$slash _notation = strlen (Preg_replace ("/0/", "", Decbin (Ip2long ($subnet _mask)));$bits =strpos

I. File, directory Operation command1. ls commandFeatures: Displays information about files and directoriesLS Displays the list of current directory files by defaultLs-a Show all files including hidden filesLs-l display file attributes, including

First, the basic concept:1, agreement protocol: agreed to send and receive the data format understood by both parties.2. Layering: Decompose complex tasks into simple tasks.3, Mac:media access controls media access control.Second, the network type:1,

Note: Intranet port: 192.168.3.253 External Network port: 192.168.6.45 (The following instructions are accordingly)!!!Join VLAN in interface mode:Switchport Access VLAN 2VLAN interface Configuration IP Address:Interface Vlan1Nameif

First, the implementation of a network card configured into multiple IP addresses. Linux network device configuration files are stored in the/etc/sysconfig/network-scripts, for the first Ethernet network device, the profile name is generally

The syntax for the route command is: Route [-cfvnee] Route [-v] [-A family] add [-net|-host] target [netmask Nm] [GW GW] [metric N] [mod] [reinstate] [[Dev] If] Route [-v] [-A family] del [-net|-host] target [GW GW] [netmask Nm] [METRICN] [[Dev]

Linux Settings Gateway and IP Modify IP Address Immediate effect: # ifconfig eth0 192.168.0.20 netmask 255.255.255.0 Start in effect: Modify/etc/sysconfig/network-scripts/ifcfg-eth0 Modify the default gateway Immediate effect: # route add default

This paper introduces a method of using Linux firewall software package to construct soft routing, which provides a simple and safe way to interconnect intranet and extranet. Linux firewall built soft routes, mainly through IP address to control

(3) Installing a DHCP server 1, the source program download address is: ftp://ftp.isc.org/isc/dhcp/dhcp-3.0.tar.gz, our version is: dhcpd-3.0 2, copy to:/USR/LOCAL/SCR after decompression: Tar zxvf dhcp-3.0.tar.gz 3,