This portal talks about security software. Technical words can be used but should be explained.
openswan - IPsec utilities for Openswan
openvpn - Virtual private network daemon
strongswan - IPSec utilities for strongSwan
vpnc - Cisco-compatible VPN client
ca-certificates - Common CA certificates
openssl - Secure Socket Layer (SSL) binary and related cryptographic tools
pyca - Certification Authority written in Python