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yum install -y epel-release 

yum install -y openssl lzo pam openssl-devel lzo-devel pam-devel


yum install -y easy-rsa

yum install -y openvpn


配置证书密钥

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cp -rf /usr/share/easy-rsa/3.0.8 /etc/openvpn/server/easy-rsa
cd /etc/openvpn/server/easy-rsa


./easyrsa init-pki
./easyrsa build-ca nopass
./easyrsa build-server-full server nopass
./easyrsa build-client-full client1 nopass
./easyrsa build-client-full client2 nopass
./easyrsa gen-dh
openvpn --genkey --secret ta.key


编写身份验证脚本
vim /etc/openvpn/server/user/checkpsw.sh