Nikkei NETWORK December 2025, November 2025 Feature 1 How to Build a "Giant LAN" Network in High-Rise Apartments Feature 2 Attacks Increasing in Japan Exposing the Tactics of Ransomware Attacks Special Report US Fortinet to End Technical Support in May 2026 Is SSL-VPN at its Limit? Thorough Analysis of Malware Learning from Data Leaked by LockBit Beginner's Question: What is a Default Route? Escaping from Trouble Communication on Monitoring Servers is Disrupted Fundamentals of Network Technology Learned in the Network Specialist Exam IPv6 NEWS close-up Asahi Group Holdings Suffers Ransomware Attack "Qilin" Claims Responsibility NTT-ME to Build Container Data Center Up to 14 Units in Ishikari City, Hokkaido Phishing Becomes Sophisticated with Generative AI Click-Through Rate Exceeds 50%