Radius

freeradius

apt install freeradius -y

vi /etc/freeradius/3.0/users
radadmin Cleartext-Password := "pass1"
		Cisco-AVPair = "Shell:priv-lvl=15"

vi /etc/freeradius/3.0/clients.conf
client RTK {
	ipaddr = *
    secret = cisco #100
}

systemctl restart freeradius