This challenge gave a pcap file along with the clue "Something, something, data, something, something, big". While this may have been some huge hint, the challenge was simple enough that it was possible to just sort by protocol and find the TELNET data. From there you could just look through the data in each of the packets, and from this it was possible to find the login request, a log-in from Julian (the challenge creator) and a password of: flag{bigdataisaproblemnotasolution}.
--bobson
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