Looks like a royal patent troll
>Anon because I have only spent 20 minutes skim reading the court pdf referenced above and one of the patents...so following might be wrong! BUT at first sight: 1. the patents seemed to define basic operation of just about any modern network switch/router, firewall or IPS system.
I spent more time. Looks like Cisco have been
royally popularly owned. The new owners apparently managed to patent things such as: 1. Correlate logs from 2 devices based on for example source/destination IP addresses and timestamps; 2. Determine that encrypted traffic from a host may be malicious if unencrypted traffic from the same host is detected to be malicious; 3. Apply the same firewall rule to more than one packet based on the same IP header fields in the forthcoming packets; 4. Apply 2 different compiled firewall rulesets to 2 different set of packets in a system with at least 2 processors in a serial fashion.
The patent infringement complaint accuses Cisco devices of having ACL logging and a management port. Seriously.
The patent examiner's networking skills seem to be rather fishy(!). One can only wonder why and how such patents are let through in this century, and these are from 2013-2015. Apparently the examiner was never Cisco certified...
It is entertaining to read El Reg stating as a matter of fact that Cisco "simply stole the functionality and incorporated it into its own products". You see, a few of years ago I happened to develop an innovative system for electronically propagated delivery and distribution of newspapers and magazines for example containing images and text by means of a computer. Let me check if my patent is expired yet...