Linux Basics (ii) network configuration, testing

Tag:existing    system administrator    

2. View, modify host name
   

             hostname View host name, temporarily change hostname, permanently change host name vi/etc/sysconfig/network  Change the hostname field to the user's desired hostname save exit, for example:

   View host name
   

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   temporarily modify host name

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   Permanently modifies host name (VI/ etc/sysconfig/network) Change hostname

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   can be changed with hostname  host name to take effect   No restart required

4. Network configuration

   1. Modify the configuration file, the permanent effect vi/etc/sysconfig/network-scripts/ifcfg-eth0

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Device=eth0 for Device name

Onboot=no for boot from

Bootproto=static how the network obtains IP

IPADDR, netmask,gateway,dns1 This is the IP address, subnet mask, gateway, domain name these are all must exist

TYPE,HWADDR, respectively, is the network type and MAC address, and then save to exit the restart service.

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2. Temporarily modify the IP address can be queried via ifconfig network, or can be temporarily modified by ifconfig IP address

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3.ifconfig network card device name down/up network card disabled and enabled, IFDOWN/IFUP network card disabled and enabled

4. Network configuration via setup, sometimes it is necessary to install setup and its components for management.

3. Network Testing

ping command simple test network connectivity

Netstat detection network configuration-a show all connections-T TCP Transport protocol connectivity status-U UDP transport Protocol connectivity status, etc.

Traceroute Route Tracking

Nslookup test Domain name resolution

Ifconfig Viewing network IP

Linux Basics (ii) network configuration, testing