In my earlier blog post, Troubleshooting OT Security: Why IT-Site1 Can’t Ping OT_Site1R, we discovered the reason for this issue. Our “who done it” is simple. For security reasons, we are using Cisco TrustSec to keep them from communicating. Which… Read More ›
I’ve been having an absolute blast playing in a lab environment for OT Security. It is this wicked cool setup I got the great fortune to play, I mean work, in. So much more is coming and I admit I… Read More ›
For over 30 years I’ve been in the playing in the “world of IT” and wow has that world changed a great deal in those years. But through all that change, there has been a thread, for me, that has always remained… Read More ›
Ready for part 2 of our Network Detective MPLS L3VPN Ride-Along? In part 1 we were presented with the “Case of the Failed L3VPN Ping”. We started, like any ping troubleshooting, on the IP subnets themselves – do they exist in the… Read More ›
Time for a little more fun in the Network Detective series! Today’s “Network Detective Ride-Along” will bring us into the config setup of someone very new to MPLS L3VPNs. As we go along remember the Network Detective Mantra “Be Prepared,… Read More ›
“Hey Fish, how good are you at BFD? None of my BFD neighbors will come up.” Two simple sentences and I am “hooked.” I love troubleshooting! Troubleshooting is just a blast for me! It’s like being a Network Detective trying… Read More ›
In honor of Father’s Day coming up soon… I’d like to pass a gift along that my Dad gave me. The gift of the “7Ps”. The “7 Ps” The 7Ps apparently started off (according to wikipedia) as a British… Read More ›