Networking Core Protocols

Prompts and answers

• Which DNS record type refers to IPv6?
  AAAA
• Which DNS record type refers to the email server?
  MX
• When was the x.com record created? Provide the answer in YYYY-MM-DD format.
  1993-04-02
• When was the twitter.com record created? Provide the answer in YYYY-MM-DD format.
  2000-01-21
• Use telnet to access the file flag.html on MACHINE_IP. What is the hidden flag?
  THM{TELNET-HTTP}
• Using the FTP client ftp on the AttackBox, access the FTP server at MACHINE_IP and retrieve flag.txt. What is the flag found?
  THM{FAST-FTP}
• Which SMTP command indicates that the client will start the contents of the email message?
  DATA
• What does the email client send to indicate that the email message has been fully entered?
  .
• Looking at the traffic exchange, what is the name of the POP3 server running on the remote server?
  Dovecot
• Use telnet to connect to MACHINE_IP’s POP3 server. What is the flag contained in the fourth message?
  THM{TELNET_RETR_EMAIL}
• What IMAP command retrieves the fourth email message?
  FETCH 4 body[]