sed -i s/mirror.centos.org/vault.centos.org/g /etc/yum.repos.d/CentOS-*.repo
sed -i s/^#.*baseurl=http/baseurl=http/g /etc/yum.repos.d/CentOS-*.repo
sed -i s/^mirrorlist=http/#mirrorlist=http/g /etc/yum.repos.d/CentOS-*.repo
yum install
yum install yum-utils epel-release
sed -e 's/^DEFAULTKERNEL=kernel-core$/DEFAULTKERNEL=kernel-plus-core/' -i /etc/sysconfig/kernel
yum install elrepo-release epel-release
yum install kmod-wireguard wireguard-tools
sudo yum install 'dnf-command(config-manager)'
yum copr enable jdoss/wireguard
yum install wireguard-dkms wireguard-tools
reboot
yum install iptables-services -y
sudo systemctl start iptables
sudo systemctl start ip6tables
sudo systemctl enalbe ip6tables
sudo systemctl enable iptables
iptables -nvL
iptables -D FORWARD 1
iptables -D INPUT 5
sysctl -w net.ipv4.ip_forward=1
sudo iptables -A FORWARD -p tcp -j TCPMSS --clamp-mss-to-pmtu