nProbe IPS: How To setup an Inline Layer-7 Traffic Policer in 5 Minutes
Introduction Recently, we have added Intrusion Prevention System (IPS) capabilities to our nProbe. Those capabilities are available starting from the latest 9.5 version, both for Linux and FreeBSD – including OPNsense and pfSense, and are available with all nProbe versions and licenses (see the product page for additional details). On Linux, nProbe leverages the netfilter framework. In essence, the kernel send packets to nProbe via NF_QUEUE which, in turn, gives each packet a pass/drop verdict so that it can be dropped or let it continue its journey through the network. …