Start by installing all of the required dependencies. Here’s the list, but your specific versions may vary. I’m just letting yum install all the latest packages. And I finish by running a “yum update -y” to get the whole system up to date. There are newer versions of the libnet package available, but you specifically need libnet-1.0.2a.tar.gz. You can search and find a bunch of mirrors or try the one I used below: Now download the snort source.