Linux network infrastructure systems

1. Network Configuration View
1) to view all card information using ifconfig

2) view of a card information

2. See change the name of the computer name computer
1) to view, modify temporary, permanent changes the name of the computer

3. All the routing table

4. Check network netstat connections
1) netstat common options
-a display all host and port connection information
-n displayed digitally
-p port number associated with the service displays and processes information
-r displays the routing table
-t display protocol TCP
-u display UDP protocol
-l display monitor progress and status of the service

5. the network connectivity test

6. network parameters type
1) temporarily modify
not permanent, failure to restart the computer
2) permanent effect
can continue to use the computer to restart, need to modify the configuration file achieve
3) set the IP address



4) Add Remove route



5) Configuring a permanent IP address
1) edit the network card configuration file
vim / etc / sysconfig / network- scripts / ifcfg-ens32



next chapter simply write about how to set up a DHCP server and Linux centOS7 simple configuration