Day: April 22, 2026

Let’s start with a real case: a 200-square-meter office of an advertising agency deployed six APs. The meeting room showed full signal bars, yet browsing was painfully slow — the most typical beginner’s setup I have ever seen. The client assumed more APs meant better coverage, but the 2.4 GHz and 5 GHz channels all overlapped, and every AP was competing with its neighbors for airtime. Put simply, when deployment density and channel planning are done poorly, spending more money only makes things worse. I…

A firewall is not as simple as “adding one more rule.” Last week I visited an education software customer in Huilongguan. On site, I found their firewall policy list had more than 370 rules, of which fewer than 80 were probably actually in use. When I asked why there were so many, the ops engineer scratched his head and said, “Every time the business submits a request, we add a rule, and it just piled up.” The result? After one server on the internal network was compromised, it spread laterally across the entire subnet…