Content Review

Why Doesn’t a 301 Redirect Work When a Domain Is Blocked?

Introduction #

In internet operations, domain blocking is a frequent and vexing issue, with numerous websites restricted due to policy or content violations. When a website or domain is blocked by government authorities for breaching regulations or policies, it often involves deeper technical and administrative layers. Network censorship measures go beyond simply preventing access to a specific IP address—they also encompass control over domain resolution and other tactics.

Website administrators often attempt to use a 301 redirect (permanent redirect) to reroute traffic to an unblocked new domain in hopes of restoring access. However, many find that even after setting up a 301 redirect, users still cannot access the site, and the new domain may quickly get blocked as well. Why does this happen? The primary reason is that a 301 redirect is essentially an HTTP response code sent by the web server to the browser, instructing it to visit a specified new URL. However, this does not alter the underlying network censorship measures that block the domain.

...

What is the GFW?

Introduction #

In today’s fast-paced era of informatization, the network has become a critical infrastructure for societal operations, with cybersecurity serving as the core element to ensure the stable operation of this infrastructure. As a firewall product occupying a significant position in the field of cybersecurity, “Great Wall Firewall” leverages its robust technical capabilities and innovative solutions to implement internet regulation as an essential tool for safeguarding national information security. This article will delve into the functional design, core technology, and security strategies of the Great Wall Firewall from a technical perspective, showcasing the professionalism and reliability of this cybersecurity product.

...

What are the symptoms or manifestations when a domain is blocked?

Introduction #

Due to political, legal, and ideological reasons, some countries or regions implement blocking measures for specific websites, leading to certain domains being “blocked” (i.e., inaccessible). For website administrators, businesses, or individuals, identifying whether a domain is blocked and how to address the issue becomes particularly important. This article will analyze in detail the symptoms or manifestations of a domain being blocked and provide corresponding solutions to help readers better identify and respond to such problems.

...