156-915.71 · Question #150
Antivirus protection on a VPN-1 Gateway is available for all of the following protocols, EXCEPT
The correct answer is B. TELNET. Check Point 156-915.71 Exam
Question
Antivirus protection on a VPN-1 Gateway is available for all of the following protocols, EXCEPT
Options
- APOP3
- BTELNET
- CHTTP
- DFTP
How the community answered
(25 responses)- A8% (2)
- B72% (18)
- C16% (4)
- D4% (1)
Explanation
Check Point 156-915.71 Exam
Topics
Community Discussion
5TELNET is the correct answer because it is a plain terminal protocol that just carries text commands and has no file or content transfer mechanism that an antivirus engine can inspect, so Check Point VPN-1 AV has never supported it. The protocols that do get AV scanning are the ones that move files or content, like HTTP, FTP, SMTP, and POP3.
The stem is asking you to think about what an antivirus engine actually needs to do its job, which is inspect content moving through a protocol, so the first elimination move is to ask yourself which option does not carry file or data content in a scannable way. POP3, HTTP, and FTP all transfer files or web objects that an AV engine can intercept and inspect at the application layer. TELNET is a character-by-character terminal session protocol, there is no payload in the file-transfer sense, so an AV engine has nothing meaningful to hook into. Here is my question for the group: do you understand WHY that protocol cannot carry inspectable content, or are you just memorizing that it is the exception, because if it is the latter you will miss a reworded version of this same concept on a different question?
TELNET is the odd one out and it comes down to what the AV engine is actually doing at the application layer. Check Point's content inspection on VPN-1 works by reassembling and scanning payloads in protocols that carry files or transferable content, so HTTP, FTP, POP3, and SMTP all fit that model because the engine has something to inspect. TELNET is just a character-stream terminal protocol, no file payload to reassemble, nothing for the AV engine to hand off to a scanner, so it was never in scope for that feature. When I sat this exam I almost second-guessed myself on FTP because active vs. passive FTP handling was fresh in my mind from a troubleshooting case the week before, but I reminded myself the question was about AV coverage, not NAT traversal, and TELNET has no inspectable content by design. Marked B, moved on, and it came back correct.
POP3 has no scannable payload at the gateway level, pick A.
Hey Eitan, actually the senior on my team made that same point last week, but she explained it the other way around. POP3 is a client retrieval protocol, so by the time mail hits POP3 it has already passed through the gateway. SMTP is what carries messages between servers at the gateway level, which is exactly where the scanner sits and why B is the right pick.