Shulou(Shulou.com)06/02 Report--

one。 Network basic Settings 1.ifconfig View the details of the network card

Ifconfig: viewing ip address information

Mtu 1500 packet bytes

Inet 192.168.17.134: ip address

Netmask 255.255.255.0: subnet mask

Broadcast 192.168.17.255: broadcast address

Inet6 fe80::e3c7:14af:6e4d: ipv6 address

Ether 00:0c:29:c9:dd:05: mac address

Lo: flags return visit network card

2.hostname View Hostname

Hostnamectl set-hostname http01

Modify hostname

Su refresh

> > the second way to modify the host name

Vim / etc/sysconfig/network/

HOSTNAME=HTTPD

NETWO rk followed by an I is capitalized NG=yes.

Restart will not take effect.

3. View routing table entry route

4.netstat-ntap to view all tcp protocols

5.netstat-nuap view all your udp protocols

6.netstat-r View routing table entries

7. Test parsing nslookup

Port 53 is for DNS.

Udp protocol specializes in address resolution.

Tcp protocol is designed to connect to dns servers.

8. Temporary and permanent configuration of ip addr

9. Add a virtual network card

9.1 you can also connect with the host to Ping.

Ifconfig ens33:0 down disable address

Ifconfig ens33:0 up is enabled

The virtual network card needs to be rebuilt.

9.2 Open and close URL

10. Add and delete records in routing table entries

11. Add and delete default gateway record

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