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42.51.13.244 has a threat confidence score of 86%. This IP address from China (AS56005, Zhengzhou Fastidc Technology Co.,Ltd.) has been observed in 136 honeypot sessions targeting RDP protocols. First observed on March 19, 2026, most recently active March 22, 2026.
Identifies RDP clients attempting authentication using Network Level Authentication (NLA) with the NTLM challenge-response protocol. This occurs during the CredSSP negotiation phase before a remote desktop session is established and indicates an active credential authentication attempt against the RDP service