RockCloud-基石云安全-官方博客
RockCloud Blog
Insights on cloud security, DDoS protection, CDN acceleration and reliable infrastructure.
Do You Need High-Protection for Hong Kong Servers? Assess Attack Risk First, Then Choose Your Defense Architecture Based on Business Protocol
Most Hong Kong servers don't need high-protection models directly. This article explains the blackhole risk after an attack on a regular Hong Kong server, then provides more cost-effective and resilient defense architectures for websites/APIs, games and private protocols, and legacy systems, along with conditions to confirm before deployment.
Hong Kong CN2 Server Packet Loss During Peak Hours: Check Local First, Test Return Route, Then Fix Line or Add Acceleration
Hong Kong CN2 servers often experience packet loss and higher latency between 20:00 and 23:00. Common causes fall into five categories: server load or bandwidth saturation, return route not using CN2 GIA, cross-network detours for China Mobile and China Unicom users, upstream bandwidth overselling, and small-scale attacks. This article provides a troubleshooting sequence: first check local load and NIC, then run bidirectional MTR during peak hours, then verify line type and differences among the three major networks, and finally choose the appropriate solution.
How to Tell If It's Really a CN2 Line: Check AS4809 and 59.43, and Test Both Outbound and Return Paths
A four-step method to verify whether a CN2 line is genuine: use MTR or Traceroute to check ASNs and IP ranges, test the outbound path, then test the return path (which is easier to fake), and finally retest during peak evening hours, examining China Telecom, China Unicom, and China Mobile separately.
CN2 GIA vs CN2 GT: Routing, Peak-Hour Performance, and Selection Criteria
CN2 GT only uses CN2 for the outbound segment, while CN2 GIA uses CN2 from provincial nodes along the entire route. This article explains the differences in routing, peak-hour stability, three-network return paths, and cost, shows how to identify lines with traceroute/MTR, and gives selection advice based on business scenarios.
What Is Normal Latency for Hong Kong CN2 Servers: Regional Benchmarks, Pass/Fail Criteria, and Troubleshooting
Round-trip latency from mainland China to Hong Kong CN2 is typically 20–50 ms, with southern China lowest and the northwest highest; this article provides regional reference ranges plus packet loss, jitter, and peak-hour pass/fail criteria.
