OpenBSD - NTopNG
NTOPNG with Self Signed Cert
ntopng is a network traffic probe that provides 360° Network visibility, with its ability to gather traffic information from traffic mirrors, Netflow exporters, SNMP devices, Firewall logs, Intrusion Detection systems.
package
as root
pkg_add ntopng
Cert
To use HTTPS on the built-in web server, create /etc/ssl/ntopng-cert.pem containing both the private key and certificate in the same file and make this readable by the _ntopng user. Use the -W flag to listen on HTTPS.