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Wireshark filter by hostname4/27/2023 ![]() If impact is a concern, minimize the number of bytes per packet and filter to particular ports. The main determinants of the impacts are how many bytes per packet are captured and whether any filtering is done (for example, by port). These impacts must be carefully reviewed before enabling network traces in a production environment. Gathering network traces has an impact on response times, throughput, and disk usage. For example, if you are investigating front-end WebSphere Application Server network behavior, gather network traces both on the target node and on the client nodes such as web servers or proxies. It is important to capture both sides of a network conversation. Even with a TLS private key, if the cipher uses Diffie-Hellman Ephemeral (DHE) key exchange, then pre-master secret keys must be separately logged to a file to enable decryption. If you are capturing encrypted traffic (for example, HTTP with TLS), depending on the negotiated cipher, it might not be possible to decrypt the traffic without more advanced diagnostics. ![]() If you are capturing non-encrypted traffic (for example, HTTP without TLS), it can include sensitive data and the capture files should be treated sensitively. ![]()
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