Update README.md

img/README.md

@@ -1 +1,37 @@
 ### Issues 图片专用
+
+###  IPTABLES 设置防火墙规则 脚本 By 蘭雅sRGB 特别感谢 TaterLi 指导
+
+```
+# 下载使用命令 或者 原bash wgmtu 选6 升级脚本后使用
+wget -qO safe_iptables.sh  git.io/fhJrU && bash safe_iptables.sh
+
+# Debian 和 Centos 关闭防火墙命令分别是
+iptables -F  && iptables-save > /etc/iptables/rules.v4
+iptables -F  && service iptables save
+
+```
+![](https://raw.githubusercontent.com/hongwenjun/vps_setup/master/img/iptables_wg.png)
+
+### 测试新的路由防火墙规则
+```
+# 修改 /etc/wireguard/wg0.conf 的 iptables规则语句
+PostUp   = iptables -I FORWARD -i wg0 -j ACCEPT; iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
+PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
+```
+
+### cat /etc/wireguard/wg0.conf  服务端配置示例
+```
+[Interface]
+PrivateKey = $PrivateKey
+Address = 10.0.0.1/24
+PostUp   = iptables -I FORWARD -i wg0 -j ACCEPT; iptables -I FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
+PostDown = iptables -D FORWARD -i wg0 -j ACCEPT; iptables -D FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
+ListenPort = $ListenPort
+DNS = 8.8.8.8
+MTU = 1500
+
+[Peer]
+PublicKey = $PublicKey
+AllowedIPs = 10.0.0.8/32
+```