1、刪除虛擬網卡virbr0
1.Down:
ifconfig virbr0 down
2.Delete:
brctl delbr virbr0
3.virbr0是由libvirtd服務創建,libvirtd在guest裏沒啥卵用,所以幹掉它,不然下次啓動又創建了:
systemctl disable libvirtd
2、關閉開啓防火牆
查看防火牆狀態
查看防火牆狀態 systemctl status firewalld
開啓防火牆 systemctl start firewalld
關閉防火牆 systemctl stop firewalld
開啓防火牆 service firewalld start
若遇到無法開啓
先用:systemctl unmask firewalld.service
然後:systemctl start firewalld.service
3、關閉開啓端口
添加指定需要開放的端口:
firewall-cmd --add-port=123/tcp --permanent
重載入添加的端口:
firewall-cmd --reload
查詢指定端口是否開啓成功:
firewall-cmd --query-port=123/tcp
移除指定端口:
firewall-cmd --permanent --remove-port=123/tcp