Hey there π
Rick Cao
Network Engineer
I'm a network engineer with a passion for networking, automation and other things I interest in. This site hosts a bit about me, selected projects, and technical notes.
My latest projects </>
Network Endpoint Tracernetwork tools
A tool for quickly finding the physical switch port to which a specific device (identified by its IP or MAC address) is connected.
Latest from blog
Finding an SMTP STARTTLS Failure with TCP Sequence AnalysisNetwork
How dual-segment packet captures, SACK blocks, and cross-path comparison exposed a TLS handshake gap caused by likely MTU/PMTUD issues.