Your TCP/IP fingerprint is captured passively from the SYN packet of your connection. It reveals your operating system without any client-side JavaScript.
| Field | Description |
|---|---|
| tcp_options | TCP options string from the SYN packet |
| ip_total_length | Total length of the IP packet (bytes) |
| tcp_window_size | TCP initial window size |
| tcp_window_scaling | TCP window scale factor |
| tcp_mss | TCP Maximum Segment Size |
| tcp_off | TCP data offset (header length / 4) |
| tcp_flags | TCP flags as integer (SYN = 2) |
| tcp_timestamp | TCP timestamp value from options |
| ip_ttl | IP Time To Live |
| ip_tos | IP Type of Service / DSCP |
| ip_id | IP Identification field |