Common configuration files in Linux

/Etc/sysconfig/network includes the basic network information of the host for system startup.

/Etc/sysconfig/network-script/the directory contains the information about the most initialized network started by the system.

/Etc/sysconfig/network-script/ifcfg-eth0 network configuration information

/Etc/xinetd. conf defines the network service started by the super process xinetd.

/Etc/protocols sets the protocol used by the host and the protocol numbers of each Protocol

/Etc/services: network services with different ports on the host

// Network Configuration Tool

# RedHat-config-network

/* Use the ifconfig command to configure and view network interfaces */

// Configure the IP address of eth0 and activate the device

# Ifconfig eth0 192.168.168.119 netmask 255.255.255.0 up

// Configure the IP address of the eth0 alias device eth0: 1 and add the route

# Ifconfig eth0: 1 192.168.168.110

# Route add-host 192.168.168.110 Dev eth0: 1

// Activate (disable) the device

# Ifconfig eth0: 1 up (down)

// View all (specified) network interface configurations

# Ifconfig (eth0)

/* Use the route command to configure the route table */

// Add to host route

# Route add-host 192.168.168.110 Dev eth0: 1

# Route add-host 192.168.168.119 GW 192.168.168.1

// Route added to the network

# Route add-net IP netmask mask eth0

# Route add-net IP netmask mask GW IP

# Route add-net IP/24 eth1

// Add a default gateway

# Route add default GW IP

// Delete a route

# Route del-host 192.168.168.110 Dev eth0: 1

/* Common commands */

# Traceroute www.pconline.com.cn

# Ping www.pconline.com.cn

// Display the network interface status

# Netstat-I

// Display the sockets of all monitored servers andProgramInformation

# Netstat-LPE

// Display kernel route table information

# Netstat-R

# Netstat-NR

// Display the connection status of TCP/UDP transmission protocol

# Netstat-T

# Netstat-u

// Change the Host Name

# Hostname myhost

// View ARP cache

# ARP

// Add

# ARP-s IP Mac

// Delete

# ARP-D IP

/* Running level and Network Service */

// View the current running level

# Runlevel

// Switch the running level

# Init

# Telinit