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Update 03_run_qemu.sh

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superconvert 2022-08-03 12:52:40 +08:00 committed by GitHub
parent a18b5073ee
commit 88cec831cc
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1 changed files with 7 additions and 2 deletions
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03_run_qemu.sh
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@ -19,6 +19,10 @@ stop_nat() {
ip tuntap del mode tap tap0
# 删除网桥
brctl delbr br0
# 删除规则链
iptables -D FORWARD -s 192.168.100.0/24 -j ACCEPT
iptables -D FORWARD -d 192.168.100.0/24 -j ACCEPT
iptables -t nat -D POSTROUTING -s 192.168.100.0/24 ! -d 192.168.100.0/24 -j MASQUERADE
}
#---------------------
@ -37,13 +41,14 @@ start_nat() {
# 启动桥设备和虚拟网卡设备
ip link set br0 up
ip link set tap0 up
# 开启物理网卡的转发功能:
sysctl -w net.ipv4.ip_forward=1
# 配置iptables forward转发规则
# 在基本环境搭建这一节中，设置了一个本地网络，虚机只能访问host，无法访问外网，如果需要访问外网需要设置SNAT
iptables -t nat -A POSTROUTING -s 192.168.100.0/24 ! -d 192.168.100.0/24 -j MASQUERADE
# 开启物理网卡的转发功能:
sysctl -w net.ipv4.ip_forward=1
# 如果有防火墙的，特别是centos系统中，记得放开防火墙
iptables -A FORWARD -s 192.168.100.0/24 -j ACCEPT
iptables -A FORWARD -d 192.168.100.0/24 -j ACCEPT
}
#----------------------