Tools And Technology

Question 1

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Answer 1

Secure Shell (SSH) encrypts traffic over TCP port 22. Transport layer security (TLS) is a replacement for SSL and is used to encrypt many different protocols. Secure FTP (SFTP) uses SSH to encrypt traffic. FTP Secure (FTPS) uses TLS to encrypt traffic.

Question 2

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Answer 2

SAMP sends email on TCP port 25, POP3 receives email on port 110, and IMAP4 uses port 143. STARTTLS allows an encrypted version of the protocol to use the same port as the encrypted version. HTTP and HTTPS use ports 80 and 443 and transmit data over the internet in unencrypted and encrypted formats respectively.

Question 3

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Answer 3

Administrators connect to servers remotely using protocols such as secure shell (SSH) and the remote desktop protocol (RDP). In some cases, administrators use virtual private networks VPN to connect to remote systems.

Question 4

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Answer 4

Private networks should only have private IP addresses. these are formally defined in RFC 1918.