Setting the Time column to ‘Seconds Since Previous Captured Packet’ directly shows the delta between consecutive packets. This makes it immediately obvious when there is a large gap, like the delay before a SYN-ACK, without needing to calculate or view a separate graph, allowing for quick identification of latency issues in the sequence of events.

Wireshark uses heuristic analysis to identify protocols. For TLS, it typically looks for a valid TLS handshake (Client Hello, Server Hello, etc.) within the TCP stream. If the capture started mid-session (after the handshake) or is missing those initial packets, Wireshark sees only encrypted data over TCP and cannot confidently label it as TLS, defaulting to the transport layer protocol (TCP) instead.

RTP headers contain a sequence number that increments by one for each packet sent. By analyzing the sequence numbers (e.g., using ‘Statistics > Flow Graph’ for RTP streams), you can identify missing numbers, which indicate packet loss. This is a direct and protocol-specific method to confirm loss, which is a primary cause of garbled VoIP audio.

While RDP can be configured to use TCP, it primarily uses UDP on port 3389 for data transfer to improve performance, especially for graphical data. The filter `tcp.port == 3389` will not match UDP traffic. A correct filter would be `ip.addr == 10.10.1.5 and (tcp.port == 22 or tcp.port == 443 or udp.port == 3389)`.

The ‘Statistics > Conversations’ window provides a tabular overview of all traffic conversations, listing total bytes transferred between each pair of addresses. Sorting the TCP tab by the ‘Bytes’ column in descending order will immediately highlight the largest data transfers, allowing you to identify sessions moving multi-megabyte files without needing to know the specific protocol or craft a precise filter first.

When a display filter is applied, Wireshark still evaluates every packet in the file against that filter when performing any action. Exporting the filtered packets to a new, smaller capture file removes the unfiltered packets from active processing. This significantly improves performance for scrolling, searching, and further analysis on the relevant data subset.

In a valid ARP packet, the Ethernet source address and the ARP sender MAC address must match, as they identify the same device. A discrepancy is a hallmark of ARP poisoning, where an attacker sends forged ARP messages to associate their MAC address with the IP address of a legitimate device on the network, enabling man-in-the-middle attacks.

‘TCP segment of a reassembled PDU’ indicates Wireshark is reassembling a TCP stream that carries application data, but it cannot interpret the data within it. For traffic on a non-standard HTTPS port (8080), this almost always means it is TLS-encrypted. To debug the actual HTTP messages, the developer would need to configure the client or server to provide TLS session keys for Wireshark to decrypt the stream.

In the 802.11 frame control field, a type/subtype value of 0x08 (8 decimal) corresponds to a Beacon frame. Beacon frames are management frames transmitted periodically by a wireless access point to announce its presence, broadcast capabilities (like supported data rates), and maintain synchronization with connected clients.

Setting the Time column to ‘Seconds Since Previous Captured Packet’ directly shows the delta between consecutive packets. This makes it immediately obvious when there is a large gap, like the delay before a SYN-ACK, without needing to calculate or view a separate graph, allowing for quick identification of latency issues in the sequence of events.0