Find the best Network Security Software for your business. Compare product reviews and features to build your list. Click the Apps and Traffic options to break down network activity by applications and traffic types. Multi-function network firewall with anti-virus, VPN, web content filtering, bandwidth control and more.
Show More Macs may be a far less tempting target for malware and viruses, but they’re not immune from attack. Even if you don’t care about or being used as a, it’s still possible to fall victim to, password theft,. Accordingly, good antivirus software will protect your Mac on all of these fronts.
It’ll catch malware that’s still spreading or in circulation; block ransomware; protect older systems with out-of-date software from security vulnerabilities; prevent your Mac from acting as a carrier for malware aimed at other operating systems; and keep infected files off of any virtual machines you’re running. Antivirus for Mac cheat sheet Our quick-hit recommendations:. Best paid antivirus for Mac:. Best free antivirus for Mac: Many antivirus suites provide a decent level of protection, but a few rise above all others by providing the very best in performance. Our top contenders dominate by posting perfect (or virtually near perfect) scores from security research labs, passing our own malware detection tests with flying colors, offering well-designed interfaces, and even throwing in extra features like a firewall or password manager. This article was updated 6-26-18 to include an new review for McAfee Total Protection.
Looking for Windows antivirus recommendations? You can read about the on our sister site, PCWorld.
Latest antivirus for Mac news. More than $1.1 million was lost to cybercrime every minute in 2018. That’s the key takeaway of the latest In total, more than $600 billion will be lost to cybercrime and nearly 980 million people will be attacked in 2018. North Korea’s alleged state-sponsored hackers, the Lazarus Group, has launched its first known malware attack against Mac computers,. Kaspersky says a third-party “trojanized cryptocurrency trading application. Compromised several banks and infiltrated a number of global cryptocurrency exchanges” to steal digital currencies like Bitcoin.
Enterprise security firm Cylance is launching its first consumer-grade package:. The new software claims to use advanced, predictive AI to kill threats, all with a consumer-friendly interface and minimal penalties to device performance. Best overall antivirus software. On Sophos Sophos Home Premium has the most extensive and up-to-date approach to fighting malware at an unbeatable price.
Has it all: Effective malware protection, ransomware monitoring, protection against potentially-unwanted-apps, and additional features that often require separately licensed software. Its cloud-based configuration and generous licensing (up to 10 Macs and PCs) also make it easy to shield friends and family from threats, no matter where they live. (Full details available.) Best free antivirus software.
Though Sophos does offer a good free version of its software, edges it out as the best free antivirus software for macOS. In security lab tests, Avast detected 99.9 percent of macOS malware, and 100 percent of Windows malware.
However, if you want more advanced protection (like ransomware detection), you'll need to upgrade to paid software. What to look for in antivirus software By our reckoning, antivirus software should be able to neutralize a threat before it can begin wreaking havoc. That means preventing the download, installation, or execution of malicious software. Since you can encounter threats by visiting compromised or malicious websites, receiving virus-laden attachments, or accessing USB drives with malware, good AV software should scan on a continuous basis unless you configure it otherwise. And ideally, files identified as malicious should be quarantined into a special storage area managed by the AV software, with the option to automatically delete files known to be malware or repair normal documents that also carry devious payloads. Great AV suites also will monitor the filesystem for certain kinds of changes. Ransomware—which is malware that will rapidly encrypt user files like documents and mailboxes and then delete the originals—has become a huge moneymaker on other platforms.
As a prime opportunity for attackers, it’s the greatest danger Mac users likely face as a category. Macworld Detecting this pattern and halting it before any files are unavailable should be possible without an anti-malware system knowing the specific innards of a ransomware virus.
Sophos, our top pick, includes this feature in the Home Premium version of its 2018 update. Other vendors, like Avast and Trend Micro Antivirus, offer an alternative feature that allows you to whitelist programs allowed to manipulate files in specific directories. So if this particular type of attack becomes rapidly popular, you’ll be protected. Good antivirus software should also use minimal computational resources. That’s especially the case these days—AV monitoring hasn’t become much more complicated than when it first became available, and faster, multi-core CPUs can easily handle the demands of running AV software in the background without disturbing your active work.
Beyond these primary features, an easy-to-navigate interface and extra features are worth factoring into your decision. Some AV software are full-fledged suites that offer additional options like backup service for essential files, a password manager, parental controls, anti-tracking and privacy modes or options, a more advanced firewall, and the blocking of Potentially Unwanted Applications (PUAs).
How we test Each software package is evaluated creating a clean installation of High Sierra, cloning it for each AV product, and then booting separately into each one to install a different package. This was to ensure that previous app installations didn’t interfere with new ones—sometimes AV software treats other AV software as an infection. In addition to visiting malicious websites, downloading known malicious software, and even running said malware, we also referenced the most recent reports from two labs that regularly cover macOS malware: (July 2017) and (May 2017). These laboratories test AV software against sets of known malware as well as products that are grouped as potentially unwanted applications (like adware). The latter doesn’t damage or expose your computer or its files but may consume power and CPU cycles. Because the testing effectively looks at a combination of virus databases and behavior, they remain good gauges even after many months. When an antivirus software package lacks a rating from a known security research lab, we do more extensive testing with real malware.
Finally, while we gave props for a lot of different features and behaviors, we marked products down if they lacked any or all of the following:. A nearly perfect score on macOS malware detection. Ransomware monitoring. Native browser plug-in or system-level Web proxy. A high score on Windows malware detection Privacy concerns Using an anti-virus product, especially any that includes tools to also improve your online privacy, may lull you into believing you’re safe from personal and private information leaking out.
That’s not quite the case. While there’s no reason to panic, you should consider a few reasonable issues. First, an antivirus product may upload the complete text of files flagged to the cloud, where it can be analyzed by separate tools hosted there.
This practice is normal and sensible: Some malware can detect when a running process may examine it, and will then engage in subterfuge. Antivirus software makers also can access their massive databases to examine files with characteristics that trigger their algorithms—certain elements that match known malware. As a result, security researchers discover new viruses, worms, Trojans horses, and the like. Macworld However, helping the greater good means you’ll have to be comfortable with trusting a third-party with your file contents. Where appropriate, we noted privacy policy issues in individual reviews. Second, this software may also rely partly or entirely on cloud-based checks of URLs, malware, and the like. Accordingly, an AV package might upload every URL you visit, metadata about files, signatures of files, information about your computer’s hardware, a list of running or installed applications, and more.
Companies vary on their disclosure of such policies, and may not let you opt out of this kind of sharing. We note issues in each review as available. Third, anti-virus software makers also get a sense of what behavior is happening on your computer that’s being monitored or blocked, and may use that information for their own purposes.
In some cases, you can opt out of this information gathering. All of our antivirus for Mac reviews If you have specific requirements or just wish to see other options, below is a list of all the antivirus software we’ve reviewed. We’ll keep evaluating new and refreshed software on a regular basis, so be sure to come back to see what else we’ve put through the ringer.
Answer: A Explanation: Port Address Translation (PAT), is an extension to network address translation (NAT) that permits multiple devices on a local area network (LAN) to be mapped to a single public IP address. The goal of PAT is to conserve IP addresses. Most home networks use PAT. In such a scenario, the Internet Service Provider (ISP) assigns a single IP address to the home network's router. When Computer X logs on the Internet, the router assigns the client a port number, which is appended to the internal IP address.
This, in effect, gives Computer X a unique address. If Computer Z logs on the Internet at the same time, the router assigns it the same local IP address with a different port number. Although both computers are sharing the same public IP address and accessing the Internet at the same time, the router knows exactly which computer to send specific packets to because each computer has a unique internal address. QUESTION NO: 3 The security administrator at ABC company received the following log information from an external party: 10:45:01 EST, SRC 10.4.3.7:3056, DST 8.4.2.1:80, ALERT, Directory traversal 10:45:02 EST, SRC 10.4.3.7:3057, DST 8.4.2.1:80, ALERT, Account brute force 10:45:03 EST, SRC 10.4.3.7:3058, DST 8.4.2.1:80, ALERT, Port scan The external party is reporting attacks coming from abc-company.com.
Which of the following is the reason the ABC company's security administrator is unable to determine the origin of the attack? A NIDS was used in place of a NIPS. The log is not in UTC. The external party uses a firewall. ABC company uses PAT. Answer: B Explanation: Port Address Translation (PAT), is an extension to network address translation (NAT) that permits multiple devices on a local area network (LAN) to be mapped to a single public IP address. The goal of PAT is to conserve IP addresses.
Most home networks use PAT. In such a scenario, the Internet Service Provider (ISP) assigns a single IP address to the home network's router. When Computer X logs on the Internet, the router assigns the client a port number, which is appended to the internal IP address. This, in effect, gives Computer X a unique address.
If Computer Z logs on the Internet at the same time, the router assigns it the same local IP address with a different port number. Although both computers are sharing the same public IP address and accessing the Internet at the same time, the router knows exactly which computer to send specific packets to because each computer has a unique internal address. QUESTION NO: 16 When performing the daily review of the system vulnerability scans of the network Joe, the administrator, noticed several security related vulnerabilities with an assigned vulnerability identification number. Joe researches the assigned vulnerability identification number from the vendor website. Joe proceeds with applying the recommended solution for identified vulnerability. Which of the following is the type of vulnerability described? Network based B.
Signature based D. Answer: B Explanation: Anomaly-based detection watches the ongoing activity in the environment and looks for abnormal occurrences. An anomaly-based monitoring or detection method relies on definitions of all valid forms of activity. This database of known valid activity allows the tool to detect any and all anomalies. Anomaly-based detection is commonly used for protocols. Because all the valid and legal forms of a protocol are known and can be defined, any variations from those known valid constructions are seen as anomalies. Answer: B,C Explanation: To establish a TCP connection, the three-way (or 3-step) handshake occurs: SYN: The active open is performed by the client sending a SYN to the server.
The client sets the segment's sequence number to a random value A. SYN-ACK: In response, the server replies with a SYN-ACK. The acknowledgment number is set to one more than the received sequence number i.e. A+1, and the sequence number that the server chooses for the packet is another random number, B.
ACK: Finally, the client sends an ACK back to the server. The sequence number is set to the received acknowledgement value i.e. A+1, and the acknowledgement number is set to one more than the received sequence number i.e. Answer: B Explanation: The question asks how to prevent access to peer-to-peer file sharing websites. You access a website by browsing to a URL using a Web browser or peer-to-peer file sharing client software.
A URL filter is used to block URLs (websites) to prevent users accessing the website. Incorrect Answer: A: A spam filter is used for email. All inbound (and sometimes outbound) email is passed through the spam filter to detect spam emails. The spam emails are then discarded or tagged as potential spam according to the spam filter configuration.
Spam filters do not prevent users accessing peerto- peer file sharing websites. C: Content inspection is the process of inspecting the content of a web page as it is downloaded.
The content can then be blocked if it doesn't comply with the company's web policy. Contentcontrol software determines what content will be available or perhaps more often what content will be blocked. Content inspection does not prevent users accessing peer-to-peer file sharing websites (although it could block the content of the sites as it is downloaded). D: Malware inspection is the process of scanning a computer system for malware.
Malware inspection does not prevent users accessing peer-to-peer file sharing websites. QUESTION NO: 23 The administrator receives a call from an employee named Joe. Joe says the Internet is down and he is receiving a blank page when typing to connect to a popular sports website. The administrator asks Joe to try visiting a popular search engine site, which Joe reports as successful.
Joe then says that he can get to the sports site on this phone. Which of the following might the administrator need to configure? The access rules on the IDS B.
The pop up blocker in the employee's browser C. The sensitivity level of the spam filter D. The default block page on the URL filter. Answer: C Explanation: An all-in-one appliance, also known as Unified Threat Management (UTM) and Next Generation Firewall (NGFW), is one that provides a good foundation for security. A variety is available; those that you should be familiar with for the exam fall under the categories of providing URL filtering, content inspection, or malware inspection.
Malware inspection is the use of a malware scanner to detect unwanted software content in network traffic. If malware is detected, it can be blocked or logged and/or trigger an alert.
Answer: A Explanation: A web application firewall (WAF) is an appliance, server plugin, or filter that applies a set of rules to an HTTP conversation. Generally, these rules cover common attacks such as cross-site scripting (XSS) and SQL injection.
By customizing the rules to your application, many attacks can be identified and blocked. The effort to perform this customization can be significant and needs to be maintained as the application is modified. As the protocols used to access a web server (typically HTTP and HTTPS) run in layer 7 of the OSI model, then web application firewall (WAF) is the correct answer. QUESTION NO: 29 A security engineer is reviewing log data and sees the output below: POST: /payload.php HTTP/1.1 HOST: localhost Accept: / Referrer: HTTP/1.1 403 Forbidden Connection: close Log: Access denied with 403. Pattern matches form bypass Which of the following technologies was MOST likely being used to generate this log?
Host-based Intrusion Detection System B. Web application firewall C.
Network-based Intrusion Detection System D. Stateful Inspection Firewall E. URL Content Filter.
Answer: B Explanation: An intrusion detection system (IDS) is a device or software application that monitors network or system activities for malicious activities or policy violations and produces reports to a management station. IDS come in a variety of 'flavors' and approach the goal of detecting suspicious traffic in different ways. There are network based (NIDS) and host based (HIDS) intrusion detection systems.
Some systems may attempt to stop an intrusion attempt but this is neither required nor expected of a monitoring system. Intrusion detection and prevention systems (IDPS) are primarily focused on identifying possible incidents, logging information about them, and reporting attempts. In addition, organizations use IDPSes for other purposes, such as identifying problems with security policies, documenting existing threats and deterring individuals from violating security policies. IDPSes have become a necessary addition to the security infrastructure of nearly every organization. IDPSes typically record information related to observed events, notify security administrators of important observed events and produce reports. Many IDPSes can also respond to a detected threat by attempting to prevent it from succeeding.
They use several response techniques, which involve the IDPS stopping the attack itself, changing the security environment (e.g. Reconfiguring a firewall) or changing the attack's content.
Explanation: Firewall rules act like ACLs, and they are used to dictate what traffic can pass between the firewall and the internal network. Three possible actions can be taken based on the rule's criteria: Block the connection Allow the connection Allow the connection only if it is secured TCP is responsible for providing a reliable, one-to-one, connection-oriented session.
TCP establishes a connection and ensures that the other end receives any packets sent. Two hosts communicate packet results with each other. TCP also ensures that packets are decoded and sequenced properly. This connection is persistent during the session. When the session ends, the connection is torn down. UDP provides an unreliable connectionless communication method between hosts. UDP is considered a best-effort protocol, but it's considerably faster than TCP.
The sessions don't establish a synchronized session like the kind used in TCP, and UDP doesn't guarantee error-free communications. The primary purpose of UDP is to send small packets of information. The application is responsible for acknowledging the correct reception of the data. Port 22 is used by both SSH and SCP with UDP. Port 443 is used for secure web connections - HTTPS and is a TCP port. QUESTION NO: 33 HOTSPOT The security administrator has installed a new firewall which implements an implicit DENY policy by default.
Click on the firewall and configure it to allow ONLY the following communication. The Accounting workstation can ONLY access the web server on the public network over the default HTTPS port. The accounting workstation should not access other networks. The HR workstation should be restricted to communicate with the Financial server ONLY, over the default SCP port 3.
The Admin workstation should ONLY be able to access the servers on the secure network over the default TFTP port. Instructions: The firewall will process the rules in a top-down manner in order as a first match The port number must be typed in and only one port number can be entered per rule Type ANY for all ports. The original firewall configuration can be reset at any time by pressing the reset button. Once you have met the simulation requirements, click save and then Done to submit. Implicit deny is the default security stance that says if you aren't specifically granted access or privileges for a resource, you're denied access by default. Rule #1 allows the Accounting workstation to ONLY access the web server on the public network over the default HTTPS port, which is TCP port 443.
Rule #2 allows the HR workstation to ONLY communicate with the Financial server over the default SCP port, which is TCP Port 22 Rule #3 & Rule #4 allow the Admin workstation to ONLY access the Financial and Purchasing servers located on the secure network over the default TFTP port, which is Port 69. QUESTION NO: 36 Sara, a security technician, has received notice that a vendor coming in for a presentation will require access to a server outside of the network. Currently, users are only able to access remote sites through a VPN connection.
How could Sara BEST accommodate the vendor? Allow incoming IPSec traffic into the vendor's IP address. Set up a VPN account for the vendor, allowing access to the remote site. Turn off the firewall while the vendor is in the office, allowing access to the remote site.
Write a firewall rule to allow the vendor to have access to the remote site. Answer: D Explanation: In the OSI model, IP addressing and IP routing are performed at layer 3 (the network layer).
In this question we need to configure routing. When configuring routing, you specify which IP range (in this case, the IP subnet of the remote site) is allowed to route traffic through the router to the FTP server.
Traffic that comes into the router is compared to ACL entries based on the order that the entries occur in the router. New statements are added to the end of the list. The router continues to look until it has a match. If no matches are found when the router reaches the end of the list, the traffic is denied. For this reason, you should have the frequently hit entries at the top of the list. There is an implied deny for traffic that is not permitted. QUESTION NO: 42 A database administrator contacts a security administrator to request firewall changes for a connection to a new internal application.
The security administrator notices that the new application uses a port typically monopolized by a virus. The security administrator denies the request and suggests a new port or service be used to complete the application's task. Which of the following is the security administrator practicing in this example?
Explicit deny B. Port security C. Access control lists D. Implicit deny. QUESTION NO: 43 An administrator needs to connect a router in one building to a router in another using Ethernet. Each router is connected to a managed switch and the switches are connected to each other via a fiber line.
Which of the following should be configured to prevent unauthorized devices from connecting to the network? Configure each port on the switches to use the same VLAN other than the default one B. Enable VTP on both switches and set to the same domain C. Configure only one of the routers to run DHCP services D. Implement port security on the switches. Answer: D Explanation: Port security in IT can mean several things: The physical control of all connection points, such as RJ-45 wall jacks or device ports, so that no unauthorized users or unauthorized devices can attempt to connect into an open port. The management of TCP and User Datagram Protocol (UDP) ports.
If a service is active and assigned to a port, then that port is open. All the other 65,535 ports (of TCP or UDP) are closed if a service isn't actively using them. Port knocking is a security system in which all ports on a system appear closed. However, if the client sends packets to a specific set of ports in a certain order, a bit like a secret knock, then the desired service port becomes open and allows the client software to connect to the service.
Answer: C Explanation: Port security in IT can mean several things. It can mean the physical control of all connection points, such as RJ-45 wall jacks or device ports, so that no unauthorized users or unauthorized devices can attempt to connect into an open port.
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This can be accomplished by locking down the wiring closet and server vaults and then disconnecting the workstation run from the patch panel (or punch-down block) that leads to a room's wall jack. Any unneeded or unused wall jacks can (and should) be physically disabled in this manner. Another option is to use a smart patch panel that can monitor the MAC address of any device connected to each and every wall port across a building and detect not just when a new device is connected to an empty port, but also when a valid device is disconnected or replaced by an invalid device. QUESTION NO: 45 On Monday, all company employees report being unable to connect to the corporate wireless network, which uses 802.1x with PEAP. A technician verifies that no configuration changes were made to the wireless network and its supporting infrastructure, and that there are no outages. Which of the following is the MOST likely cause for this issue? Too many incorrect authentication attempts have caused users to be temporarily disabled.
The DNS server is overwhelmed with connections and is unable to respond to queries. The company IDS detected a wireless attack and disabled the wireless network. The Remote Authentication Dial-In User Service server certificate has expired. Answer: D Explanation: The question states that the network uses 802.1x with PEAP. The 802.1x authentication server is typically an EAP-compliant Remote Access Dial-In User Service (RADIUS). A RADIUS server will be configured with a digital certificate. When a digital certificate is created, an expiration period is configured by the Certificate Authority (CA).
The expiration period is commonly one or two years. The question states that no configuration changes have been made so it's likely that the certificate has expired.
Answer: D Explanation: 802.1x is a port-based authentication mechanism. It's based on Extensible Authentication Protocol (EAP) and is commonly used in closed-environment wireless networks. 802.1x was initially used to compensate for the weaknesses of Wired Equivalent Privacy (WEP), but today it's often used as a component in more complex authentication and connection-management systems, including Remote Authentication Dial-In User Service (RADIUS), Diameter, Cisco System's Terminal Access Controller Access-Control System Plus (TACACS+), and Network Access Control (NAC). QUESTION NO: 48 A network administrator wants to block both DNS requests and zone transfers coming from outside IP addresses.
The company uses a firewall which implements an implicit allow and is currently configured with the following ACL applied to its external interface. PERMIT TCP ANY ANY 80 PERMIT TCP ANY ANY 443 Which of the following rules would accomplish this task? (Select TWO). Change the firewall default settings so that it implements an implicit deny B. Apply the current ACL to all interfaces of the firewall C. Remove the current ACL D. Add the following ACL at the top of the current ACL DENY TCP ANY ANY 53 E.
Add the following ACL at the bottom of the current ACL DENY ICMP ANY ANY 53 F. Add the following ACL at the bottom of the current ACL DENY IP ANY ANY 53. Answer: A,F Explanation: Implicit deny is the default security stance that says if you aren't specifically granted access or privileges for a resource, you're denied access by default. Implicit deny is the default response when an explicit allow or deny isn't present. DNS operates over TCP and UDP port 53.
TCP port 53 is used for zone transfers. These are zone file exchanges between DNS servers, special manual queries, or used when a response exceeds 512 bytes. UDP port 53 is used for most typical DNS queries. QUESTION NO: 50 The Human Resources department has a parent shared folder setup on the server. There are two groups that have access, one called managers and one called staff. There are many sub folders under the parent shared folder, one is called payroll. The parent folder access control list propagates all subfolders and all subfolders inherit the parent permission.
Which of the following is the quickest way to prevent the staff group from gaining access to the payroll folder? Remove the staff group from the payroll folder B. Implicit deny on the payroll folder for the staff group C. Implicit deny on the payroll folder for the managers group D. Remove inheritance from the payroll folder.
Answer: D Explanation: 802.1x is a port-based authentication mechanism. It's based on Extensible Authentication Protocol (EAP) and is commonly used in closed-environment wireless networks. 802.1x was initially used to compensate for the weaknesses of Wired Equivalent Privacy (WEP), but today it's often used as a component in more complex authentication and connection-management systems, including Remote Authentication Dial-In User Service (RADIUS), Diameter, Cisco System's Terminal Access Controller Access-Control System Plus (TACACS+), and Network Access Control (NAC). A virtual local area network (VLAN) is a hardware-imposed network segmentation created by switches. By default, all ports on a switch are part of VLAN 1. But as the switch administrator changes the VLAN assignment on a port-by-port basis, various ports can be grouped together and be distinct from other VLAN port designations.
VLANs are used for traffic management. Communications between ports within the same VLAN occur without hindrance, but communications between VLANs require a routing function. Answer: D Explanation: A DMZ or demilitarized zone (sometimes referred to as a perimeter network) is a physical or logical subnetwork that contains and exposes an organization's external-facing services to a larger and untrusted network, usually the Internet. The purpose of a DMZ is to add an additional layer of security to an organization's local area network (LAN); an external network node only has direct access to equipment in the DMZ, rather than any other part of the network.
The name is derived from the term 'demilitarized zone', an area between nation states in which military operation is not permitted. QUESTION NO: 67 A small company can only afford to buy an all-in-one wireless router/switch. The company has 3 wireless BYOD users and 2 web servers without wireless access. Which of the following should the company configure to protect the servers from the user devices?
(Select TWO). Deny incoming connections to the outside router interface. Change the default HTTP port C. Implement EAP-TLS to establish mutual authentication D. Disable the physical switch ports E. Create a server VLAN F.
Create an ACL to access the server. Answer: E,F Explanation: We can protect the servers from the user devices by separating them into separate VLANs (virtual local area networks). The network device in the question is a router/switch. We can use the router to allow access from devices in one VLAN to the servers in the other VLAN. We can configure an ACL (Access Control List) on the router to determine who is able to access the server.
In computer networking, a single layer-2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them via one or more routers; such a domain is referred to as a virtual local area network, virtual LAN or VLAN. This is usually achieved on switch or router devices. Simpler devices only support partitioning on a port level (if at all), so sharing VLANs across devices requires running dedicated cabling for each VLAN. More sophisticated devices can mark packets through tagging, so that a single interconnect (trunk) may be used to transport data for multiple VLANs. Grouping hosts with a common set of requirements regardless of their physical location by VLAN can greatly simplify network design.
A VLAN has the same attributes as a physical local area network (LAN), but it allows for end stations to be grouped together more easily even if they are not on the same network switch. The network described in this question is a DMZ, not a VLAN. QUESTION NO: 70 An administrator connects VoIP phones to the same switch as the network PCs and printers. Which of the following would provide the BEST logical separation of these three device types while still allowing traffic between them via ACL? Create three VLANs on the switch connected to a router B. Define three subnets, configure each device to use their own dedicated IP address range, and then connect the network to a router C.
Install a firewall and connect it to the switch D. Install a firewall and connect it to a dedicated switch for each device type. QUESTION NO: 74 Review the following diagram depicting communication between PC1 and PC2 on each side of a router. Analyze the network traffic logs which show communication between the two computers as captured by the computer with IP 10.2.2.10. DIAGRAM PC1 PC2 192.168.1.30-INSIDE 192.168.1.1 router OUTSIDE 10.2.2.1-10.2.2.10 LOGS 10:30:22, SRC 10.2.2.1:3030, DST 10.2.2.10:80, SYN 10:30:23, SRC 10.2.2.10:80, DST 10.2.2.1:3030, SYN/ACK 10:30:24, SRC 10.2.2.1:3030, DST 10.2.2.10:80, ACK Given the above information, which of the following can be inferred about the above environment? 192.168.1.30 is a web server. The web server listens on a non-standard port.
The router filters port 80 traffic. The router implements NAT. Answer: D Explanation: Network address translation (NAT) allows you to share a connection to the public Internet via a single interface with a single public IP address.
NAT maps the private addresses to the public address. In a typical configuration, a local network uses one of the designated 'private' IP address subnets. A router on that network has a private address (192.168.1.1) in that address space, and is also connected to the Internet with a 'public' address (10.2.2.1) assigned by an Internet service provider.
QUESTION NO: 84 The server administrator has noted that most servers have a lot of free disk space and low memory utilization. Which of the following statements will be correct if the server administrator migrates to a virtual server environment? The administrator will need to deploy load balancing and clustering. The administrator may spend more on licensing but less on hardware and equipment. The administrator will not be able to add a test virtual environment in the data center.
Servers will encounter latency and lowered throughput issues. QUESTION NO: 89 The Chief Information Officer (CIO) has mandated web based Customer Relationship Management (CRM) business functions be moved offshore to reduce cost, reduce IT overheads, and improve availability. The Chief Risk Officer (CRO) has agreed with the CIO's direction but has mandated that key authentication systems be run within the organization's network.
Which of the following would BEST meet the CIO and CRO's requirements? Software as a Service B.
Infrastructure as a Service C. Platform as a Service D. Hosted virtualization service. Answer: A Explanation: Layer 2 Tunneling Protocol (L2TP) came about through a partnership between Cisco and Microsoft with the intention of providing a more secure VPN protocol. L2TP is considered to be a more secure option than PPTP, as the IPSec protocol which holds more secure encryption algorithms, is utilized in conjunction with it. It also requires a pre-shared certificate or key.
L2TP's strongest level of encryption makes use of 168 bit keys, 3 DES encryption algorithm and requires two levels of authentication. L2TP has a number of advantages in comparison to PPTP in terms of providing data integrity and authentication of origin verification designed to keep hackers from compromising the system. However, the increased overhead required to manage this elevated security means that it performs at a slower pace than PPTP.