Decrypt SSL connection when having a complete dump

Question

how can i debug/decrypt the data of a ssl connection (not https) when having a tcpdump file from the first time connecting until the end? is this possible?

Thanks, Thomas

Answer 1

Wireshark can do this if you have the server's private key and if the cipher suite allows it (Ephemeral Diffie-Hellman suites won't work, for example).