NSE4 · Question #213
Which part of an email message exchange is NOT inspected by the POP3 and IMAP proxies?
The correct answer is A. TCP connection. The POP3 and IMAP proxies on a FortiGate inspect the content of email messages, including attachments, headers, and body, but do not directly inspect the underlying TCP connection itself.
Question
Which part of an email message exchange is NOT inspected by the POP3 and IMAP proxies?
Options
- ATCP connection
- BFile attachments
- CMessage headers
- DMessage body
How the community answered
(38 responses)- A87% (33)
- B3% (1)
- C8% (3)
- D3% (1)
Why each option
The POP3 and IMAP proxies on a FortiGate inspect the content of email messages, including attachments, headers, and body, but do not directly inspect the underlying TCP connection itself.
POP3 and IMAP proxies operate at the application layer (Layer 7), focusing on the content and commands within the email protocol, inspecting data exchanged over the established TCP connection rather than the low-level TCP connection parameters or establishment process.
File attachments are a primary target for inspection by POP3 and IMAP proxies, especially for antivirus and data loss prevention.
Message headers contain crucial information like sender, recipient, and subject, which are inspected by proxies for spam, phishing, and policy enforcement.
The message body contains the main content of the email and is thoroughly inspected for malware, spam, and sensitive information by the proxies.
Concept tested: POP3/IMAP proxy inspection scope
Source: https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/523930/proxy-inspection
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