mad_note

yum install epel-release

yum install autoconf.noarch automake file gcc libtool patch quilt git make rpm-build zlib-devel pam-devel openssl-devel lzo-devel

yum install autoconf.noarch automake file gcc libtool patch quilt git make rpm-build zlib-devel pam-devel openssl-devel lzo-devel gcc-c++ libgcrypt-devel net-tools lzo lz4

if problem 
  yum update nss --disablerepo=epel
  
sftp wget install.tgz

tar zxvf install.tgz

cd install
rpmbuild -ta openvpn-2.4.2.tar.gz

cd /root/rpmbuild/RPMS
yum install openvpn*rpm

cd rad*

make

copy2

generate cert

configure firewall