Daum

Daum Portal: Censorship in China and North Korea

What Daum is

Daum is a major web portal and search engine headquartered in South Korea, launched in 1995. It operates as a subsidiary of Kakao Corporation (formerly Daum Kakao), one of South Korea's largest internet companies. The platform serves primarily Korean-language users and combines search, email, web directories, and community services. Daum maintains a significant domestic user base in South Korea but has limited international presence, with most traffic originating from Korean speakers.

Why it's censored

Daum faces systematic blocking in China and North Korea, driven by distinct regulatory frameworks in each country.

In China, the Great Firewall blocks Daum as part of broader restrictions on foreign portals deemed incompatible with content governance policies. The Chinese government, through the Cyberspace Administration of China (CAC), restricts access to foreign-registered websites that host user-generated content, news aggregation, or services it cannot directly regulate. Daum's news aggregation features and community forums fall under this classification. Additionally, South Korean media presence on the platform—including news outlets critical of Beijing's policies toward Korean minorities—creates political friction. Blocking reinforces China's preference for domestically-controlled alternatives like Baidu and Sina.

In North Korea, restrictions operate under a different logic. The regime maintains one of the world's most closed information environments, with general internet access limited to government officials and select institutions. North Korea's public-facing network, Kwangmyong, operates on intranet-only infrastructure. Daum is blocked not through technical filtering of external traffic—most citizens have no internet access—but through institutional policy: the regime prohibits foreign portal access entirely. This reflects broader information control doctrine rather than specific content objections. North Korean citizens who do access international networks through smuggled devices or cross-border connections would encounter Daum blocks as part of comprehensive external website blacklists.

Technical blocking methods

Blocking mechanisms differ by country infrastructure and sophistication.

China employs multi-layered filtering at the network backbone level. Primary methods include DNS poisoning, where queries for daum.net return null or spoofed IP addresses; IP-level blocking at major ISP gateways; and Deep Packet Inspection (DPI) to identify and terminate encrypted connections to known Daum servers. SNI (Server Name Indication) filtering also occurs, blocking TLS handshakes containing daum.net in the ClientHello packet. These methods are applied inconsistently—some users report partial access during periods of light blocking enforcement.

North Korea's blocking is less technically documented, given limited external visibility. However, access control appears institutional rather than technical: internet gateways are centrally managed, and external websites exist on blacklists enforced at firewall chokepoints. Citizens without legitimate access credentials cannot reach external networks at all.

User workarounds

Users in China typically employ encrypted tunnel protocols that obscure destination servers, preventing DPI detection. This requires tools that support obfuscated traffic to evade both DNS and SNI filtering. Protocol rotation—switching between different encryption standards—helps users maintain access as authorities update filter lists.

For North Korea, workarounds are limited by structural barriers. Citizens without institutional access lack basic internet connectivity; those with access (diplomats, researchers) can use standard encryption protocols that bypass institutional filtering.

Alternatives

Naver, another major South Korean portal, faces identical blocking in China and North Korea. Google (partially blocked in China since 2010, fully inaccessible in North Korea) offers similar search and news aggregation. Baidu serves Chinese users as the primary domestic alternative, though it operates under CAC content guidelines.

Outlook

Restrictions in China show no signs of easing; regulatory tightening under CAC enforcement suggests blocking will persist and potentially expand to encrypted access methods. North Korea's restrictions are structural and unlikely to change absent regime policy shifts. Both countries treat foreign portals as tools for information control rather than content moderation, indicating censorship will remain comprehensive.