CompTIA
CAS-003 · Question #242
CAS-003 Question #242: Real Exam Question with Answer & Explanation
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Question
Customers are receiving emails containing a link to malicious software. These emails are subverting spam filters. The email reads as follows: Delivered-To: [email protected] Received: by 10.14.120.205 Mon, 1 Nov 2010 11:15:24 -0700 (PDT) Received: by 10.231.31.193 Mon, 01 Nov 2010 11:15:23 -0700 (PDT) Return-Path: [email protected] Received: from 127.0.0.1 for [email protected]; Mon, 1 Nov 2010 13:15:14 -0500 (envelope-from [email protected]) Received: by smtpex.example.com (SMTP READY) with ESMTP (AIO); Mon, 01 Nov 2010 13:15:14 -0500 Received: from 172.18.45.122 by 192.168.2.55; Mon, 1 Nov 2010 13:15:14 -0500 From: Company [email protected] To: "[email protected]" [email protected] Date: Mon, 1 Nov 2010 13:15:11 -0500 Subject: New Insurance Application Thread-Topic: New Insurance Application Please download and install software from the site below to maintain full access to your account. ________________________________ Additional information: The authorized mail servers IPs are 192.168.2.10 and 192.168.2.11. The network's subnet is 192.168.2.0/25. Which of the following are the MOST appropriate courses of action a security administrator could take to eliminate this risk? (Select TWO).
Options
- AIdentify the origination point for malicious activity on the unauthorized mail server.
- BBlock port 25 on the firewall for all unauthorized mail servers.
- CDisable open relay functionality.
- DShut down the SMTP service on the unauthorized mail server.
- EEnable STARTTLS on the spam filter.
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