AnaTraf Software – Completely Free, Forever

Deep TCP Connection Analysis

AnaTraf delivers comprehensive TCP connection analysis across multiple dimensions — connection states, performance, and anomalies — helping you quickly identify and resolve TCP-related network issues.

TCP retransmission analysis

TCP retransmission analysis — quickly locate network bottlenecks

TCP Connection State Tracking

Monitor and record the full lifecycle of every TCP connection — establishment (SYN), data transfer, and teardown (FIN/RST). The system automatically detects anomalous states such as SYN attacks, half-open connections, and abnormal disconnections, with detailed connection information.

TCP connection state

TCP connection state tracking

TCP Handshake Latency Analysis

Deep analysis of latencies during the TCP three-way handshake — from SYN sent to SYN-ACK received, and full connection establishment time. Statistical analysis surfaces abnormal handshake delays to help identify issues in network transmission and server processing capacity.

TCP handshake latency

TCP handshake latency analysis

TCP Flags Statistics

Aggregate TCP flag usage (SYN, ACK, PSH, RST, FIN, and others). Flag combinations reveal behavioral patterns in TCP connections. Focus on anomalous combinations such as large volumes of RST or FIN packets.

TCP flags statistics

TCP flags statistics

TCP Interaction Sequence Diagram

Visual TCP session sequence diagrams clearly display the connection establishment, data transfer, and teardown. Each packet is shown with direction, TCP flags, sequence/acknowledgment numbers, with retransmissions and out-of-order delivery highlighted.

TCP sequence diagram

TCP interaction sequence diagram

TCP Zero Window Analysis

Monitor and analyze zero-window conditions in TCP connections, where the receiver cannot keep up with the sender. The system records zero-window frequency, duration, and the involved source/destination addresses to help identify performance bottlenecks.

TCP zero window

TCP zero window analysis

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