Analyzing Network Traffic - Malware Infection

I am working on the Lab 2: Analyzing Network Traffic - Malware Infection but i am unable to download the 2017-03-25-traffic-analysis-exercise to Security Onion. Can i have help?

Check your Internet connectivity.

sudo ifconfig

If you don’t have an IP address for enp0s3, use the following command to acquisition the DHCP server.

sudo dhclient enp0s3