Client sends RTSP OPTIONS requests to check supported methods and confirm that an RTSP service is exposed, then disconnects without attempting authentication or stream setup. This pattern is typically associated with automated reconnaissance or internet-wide scanning rather than active stream access.

Identifies an automated Redis service probing sequence consisting of PING, INFO (uppercase invocation), execution of a deliberately nonexistent command to assess error handling behavior, and QUIT. This tightly grouped pattern reflects reconnaissance and fingerprinting activity used by scanners and exploitation frameworks to determine Redis version, configuration details, and command availability prior to follow-on exploitation attempts. The inclusion of a nonexistent command indicates capability probing rather than normal client interaction.

Identifies Redis service discovery and basic environment enumeration where an actor probes with invalid commands, validates availability using PING, retrieves server metadata via INFO (case variations), and gracefully exits with QUIT. This pattern is commonly used to fingerprint exposed Redis instances before exploitation.

Client connects to a MongoDB instance and issues isMaster followed by buildinfo, indicating an attempt to identify server role, capabilities, and software version. This pattern is commonly associated with automated discovery or fingerprinting of exposed MongoDB services rather than normal application activity.