1. ifconfig & service
ifconfig 显示网络接口
ifconfig eth0 down 禁用网络接口
ifconfig eth0 up 启用网络接口
内存法
ifconfig eth0 1.2.3.4 netmask 255.0.0.0 up 设置网络接口
文件法
cat /etc/sysconfig/network-scripts/ifcfg-eth0
gedit /etc/sysconfig/network-scripts/ifcfg-eth0
service NetworkManager start
service NetworkManager stop
service NetworkManager restart
2. ping
ping 192.168.1.1
3. iptables 防火墙
service iptables start 开启防火墙
service iptables stop 关闭防火墙
iptables -F 清空防火墙规则
4. route 网关
route -n
route add default gw IP 添加默认网关
5. arp
arp -s IP MAC
arp -d IP
6. dns
cat /etc/resolv.conf
gedit /etc/resolv.conf
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