Plex Media SSDP (PMSSDP) Reflection/Amplification DDoS Attack Mitigation Recommendations
Amplified PMSSDP DDoS attack traffic consists of SSDP HTTP/U responses sourced from ports UDP port 32414 and/or UDP port 32410 on abusable Plex Media Server instances and directed towards attack target(s); each amplified response packet ranges from 52 bytes – 281 bytes in size, for an average amplification factor of ~4.68:1
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