Remote login remains the most prevalent method for server maintenance, yet it inadvertently creates an additional attack surface for cyber adversaries. Hackers can exploit this access channel through brute-force attacks, password dictionary attacks, and other exploits to compromise server integrity.

When clients operate with dynamic IP addresses (as nearly all standard users do), enhancing security via IP-based restrictions becomes impractical.

This security challenge has been comprehensively addressed since deploying the Defense System.

Through the Defense System's Remote Protection module, administrators can enforce granular access controls including:

Time-bound login restrictions

Terminal device identification (by computer name)

Terminal IP/geographic location filtering

This creates a zero-trust security perimeter where even users possessing valid admin credentials cannot establish remote connections outside predefined authorization parameters.

As demonstrated in the figure below, the system currently permits remote login exclusively from Hong Kong SAR (the statistical probability of attackers sharing your precise geographic location is negligible).