The network administrator for an e-commerce website requires a service that prevents customers from claiming that legitimate orders are fake. 48. Only allow devices that have been approved by the corporate IT team. What is the function of the pass action on a Cisco IOS Zone-Based Policy Firewall? This technique can be used for storing malicious RR information in the cache of a resolver for an extended period of time. 16. 66. ), access-list 3 permit 192.168.10.128 0.0.0.63, access-list 1 permit 192.168.10.0 0.0.0.127, access-list 4 permit 192.168.10.0 0.0.0.255, access-list 2 permit host 192.168.10.9access-list 2 permit host 192.168.10.69, access-list 5 permit 192.168.10.0 0.0.0.63access-list 5 permit 192.168.10.64 0.0.0.63. !-- Enable id-mismatch to count DNS transaction ID !-- mismatches within a specified period of time !-- and generate a syslog when the defined threshold !-- has been reached. Explanation: Traffic that originates within a router such as pings from a command prompt, remote access from a router to another device, or routing updates are not affected by outbound access lists. They provide confidentiality, integrity, and availability. The opposite is also true. Which data loss mitigation technique could help with this situation? This means that the security of encryption lies in the secrecy of the keys, not the algorithm. Which security measure is best used to limit the success of a reconnaissance attack from within a campus area network? Refer to the exhibit. Network Security (Version 1) Network Security 1.0 Final Exam, Explanation: Malware can be classified as follows:Virus (self-replicates by attaching to another program or file)Worm (replicates independently of another program)Trojan horse (masquerades as a legitimate file or program)Rootkit (gains privileged access to a machine while concealing itself)Spyware (collects information from a target system)Adware (delivers advertisements with or without consent)Bot (waits for commands from the hacker)Ransomware (holds a computer system or data captive until payment isreceived). Explanation: Reconnaissance attacks attempt to gather information about the targets. AAA is not required to set privilege levels, but is required in order to create role-based views. Explanation: In order to explicitly permit traffic from an interface with a lower security level to an interface with a higher security level, an ACL must be configured. Unicast RPF operates in two modes: strict and loose. What is the next step? Explanation: The Nesus tool provides remote vulnerability scanning that focuses on remote access, password misconfiguration, and DoS against the TCP/IP stack. Explanation: A digital certificate might need to be revoked if its key is compromised or it is no longer needed. 132. Note:This may indicate that your DNS server is configured as a DNS open resolver. Authentication, encryption, and passwords provide no protection from loss of information from port scanning. In an AAA-enabled network, a user issues the configure terminal command from the privileged executive mode of operation. (Choose two.). .000 .414 .091 .015 .032 .024 .018 .004 .010 .001 .003 .002 .002 .005 .007 (Choose two.). TCP-X 4 0.0 1 46 0.0 0.0 60.6 Decrease the wireless antenna gain level. The level of isolation can be specifiedwith three types of PVLAN ports: Promiscuous ports that can forward traffic to all other ports Isolated ports that can only forward traffic to promiscuous ports Community ports that can forward traffic to other community ports and promiscuous ports. Password requirements: 6 to 30 characters long; ASCII characters only (characters found on a standard US keyboard); must contain at least 4 different symbols; It is commonly implemented over dialup and cable modem networks. We will update answers for you in the shortest time. What statement describes an attack vector? Each site commonly has a firewall and VPNs used by remote workers between sites. This traffic is permitted with little or no restriction. Buy an IPS. Another multifaceted technique used by attackers is to rapidly change hostname to IP address mappings for both DNS A (address) RRs and DNS NS (name server) RRs, creating a Double-Flux (DF) network. A user complains about being locked out of a device after too many unsuccessful AAA login attempts. Frames from PC1 will be dropped, and a log message will be created. Which statement is true about the effect of this Cisco IOS zone-based policy firewall configuration? 23. ), Explanation: There are many differences between a stateless and stateful firewall.Stateless firewalls (packet filtering firewalls): are susceptible to IP spoofing do not reliably filter fragmented packets use complex ACLs, which can be difficult to implement and maintain cannot dynamically filter certain services examine each packet individually rather than in the context of the state of a connection, Stateful firewalls: are often used as a primary means of defense by filtering unwanted, unnecessary, or undesirable traffic strengthen packet filtering by providing more stringent control over security improve performance over packet filters or proxy servers defend against spoofing and DoS attacks by determining whether packets belong to an existing connection or are from an unauthorized source provide more log information than a packet filtering firewall. When the Cisco NAC appliance evaluates an incoming connection from a remote device against the defined network policies, what feature is being used? Router03 time is synchronized to a stratum 2 time server. Deleting a superview does not delete the associated CLI views. The following example shows how to identify the TLD for a domain name: comis the TLD forwww.cisco.comas it is the label furthest to the right. Place extended ACLs close to the source IP address of the traffic. If recursion is disabled, operators will not be able to use DNS forwarders on that server. 109. command extracts syslog messages from the logging buffer on the firewall. The Domain Name Service (DNS) protocol defines an automated service that matches resource names, such as www.cisco.com, with the required numeric network address, such as the IPv4 or IPv6 address. 114. IOCs can be identifying features of malware files, IP addresses of servers that are used in the attack, filenames, and characteristic changes made to end system software. Refer to the exhibit. Other operating system implementations of/dev/randomare different and operators should consult the vendors operating system documentation for details on its implementation. Place extended ACLs close to the destination IP address of the traffic. 44. 99. 9. Using an out-of-band communication channel (OOB) either requires physical access to the file server or, if done through the internet, does not necessarily encrypt the communication. Note:The example configurations for BIND will use version 9.5. Additional information about filtering unused addresses is available at the. Theid-randomizationparameters submode command forpolicy-map type inspect dnscan be used to randomize the DNS transaction ID for a DNS query. for more information on how to configure Access Control Lists. Cisco IOS ACLs are processed sequentially from the top down and Cisco ASA ACLs are not processed sequentially. Authentication will help verify the identity of the individuals. DH is a public key exchange method and allows two IPsec peers to establish a shared secret key over an insecure channel. To configure application inspection, administrators may construct an inspection policy through the configuration of inspect class maps and inspect policy maps, which are applied via a global or an interface service policy. These are likely to use large DNS packets to increase their efficiency; however large packets are not a requirement. The IDS analyzes actual forwarded packets. switchport mode access Different from the router IOS, the ASA provides a help command that provides a brief command description and syntax for certain commands. This feature is not supported on the FWSM firewalls. Management plane: Responsible for managing network devices. Techniques are shared that can be used to prevent these types of activities. Network Security (Version 1.0) Practice Final Exam Answers, Network Security 1.0 Final PT Skills Assessment (PTSA) Exam, Modules 1 - 4: Securing Networks Group Exam Answers, Modules 5 - 7: Monitoring and Managing Devices Group Exam Answers, Modules 8 - 10: ACLs and Firewalls Group Exam Answers, Modules 11 - 12: Intrusion Prevention Group Exam Answers, Modules 13 - 14: Layer 2 and Endpoint Security Group Exam Answers, Modules 15 - 17: Cryptography Group Exam Answers, Network Security (Version1.0) Modules 15 17: Cryptography Group Test Online, 6.3.7 Packet Tracer Configure OSPF Authentication Answers, 15.4.5 Lab Explore Encryption Methods Answers, 21.2.10 Optional Lab Configure ASA Basic Settings Using the CLI Answers, Module 9: Quiz Firewall Technologies (Answers) Network Security, 6.6.4 Packet Tracer Configure and Verify NTP Answers, Network Security (Version1.0) Modules 18 19: VPNs Group Test Online, 15.1.5 Check Your Understanding Identify the Secure Communication Objective Answers, 18.4.6 Check Your Understanding Compare AH and ESP Answers, 8.5.12 Packet Tracer Configure Extended ACLs Scenario 1 Answers, Modules 3 4: Operating System Overview Group Exam (Answers). (Choose three.). The implementation of a firewall on the network edge may prevent reconnaissance attacks from the Internet, but attacks within the local network are not prevented. Refer to the exhibit. RFC 882, DOMAIN NAMES - CONCEPTS and FACILITIES, RFC 883, DOMAIN NAMES - IMPLEMENTATION and SPECIFICATION, RFC 973, Domain System Changes and Observations, RFC 1033, DOMAIN ADMINISTRATORS OPERATIONS GUIDE, RFC 1034, DOMAIN NAMES - CONCEPTS AND FACILITIES, RFC 1035, DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION, Domain Name System Structure and Delegation, Negative Caching of DNS Queries (DNS NCACHE), IAB Technical Comment on the Unique DNS Root, Domain Name System (DNS) IANA Considerations, RFC 3833, Threat Analysis of the Domain Name System (DNS), What's in a Name: False Assumptions about DNS Names, Use of Bit 0x20 in DNS Labels to Improve Transaction Identity, http://tools.ietf.org/html/draft-vixie-dnsext-dns0x20, Measures for making DNS more resilient against forged answers, http://tools.ietf.org/html/draft-ietf-dnsext-forgery-resilience, Domain Name System Operations Working Group, BIND 9 Administrator Reference Manual (ARM), http://www.oreilly.com/catalog/9780596100575/, https://lists.dns-oarc.net/mailman/listinfo/dns-operations. The ACL is applied inbound on the desired interface. After issuing a show run command, an analyst notices the following command: 56. It protects the switched network from receiving BPDUs on ports that should not be receiving them. Which method is used to identify interesting traffic needed to create an IKE phase 1 tunnel? There can only be one statement in the network object. 25. Filter unwanted traffic before it travels onto a low-bandwidth link. Explanation: Authentication must ensure that devices or end users are legitimate. It establishes the criteria to force the IKE Phase 1 negotiations to begin. 46. The following IPS Signatures provide rate based or anomaly detection and are useful in identifying attacks that cause a change in the rate or profile of the DNS traffic (such as amplification or cache poisoning attacks). Several configuration examples are available in the Prevent DNS Open Resolver Configurations above to prevent or restrict your server from responding to recursive DNS queries. installing the maximum amount of memory possible. Use an algorithm that requires the attacker to have both ciphertext and plaintext to conduct a successful attack. http://www.isc.org and is included with many operating systems. ), 145. A CLI view has a command hierarchy, with higher and lower views. The DNS messages sent to open resolvers set the recursion desired (RD) flag in the DNS header. With HIPS, the success or failure of an attack cannot be readily determined. Refer to the exhibit. (Choose three.). 125. Cisco IOS ACLs utilize an implicit deny all and Cisco ASA ACLs end with an implicit permit all. A web-based tool that will check DNS servers to determine if they support recursion from the Internet. Which network monitoring technology uses VLANs to monitor traffic on remote switches? Users on the 192.168.10.0/24 network are not allowed to transmit traffic to any other destination. However, connections initiated from outside hosts are not allowed. Utilizing the DNS application inspection flag filtering feature, these attacks can be minimized by dropping DNS messages with the RD flag present in the DNS header. BIND also allows operators the ability to select which addresses on the DNS server will provide answers from the DNS cache using the 'allow-query-cache-on' configuration option. Refer to the exhibit. Explanation: The IPsec framework uses various protocols and algorithms to provide data confidentiality, data integrity, authentication, and secure key exchange. 33. 110. Refer to the exhibit. Which component is addressed in the AAA network service framework? Select the modes and interfaces that can be protected with passwords. What is the purpose of mobile device management (MDM) software? Recursive DNS servers should be used only for responding to queries from DNS resolvers inside its administrative domain. What is needed to allow specific traffic that is sourced on the outside network of an ASA firewall to reach an internal network? A recently created ACL is not working as expected. (Choose two. Traffic originating from the inside network going to the DMZ network is selectively permitted. (Choose two. (Choose two.). A PC technician has been asked by a supervisor to recommend a security solution for phishing. Which rule action will cause Snort IPS to block and log a packet? R1 will open a separate connection to the TACACS+ server for each user authentication session. UDP-Frag 301039 0.0 6 569 0.4 0.0 15.6 The RR contains a 32-bit Time To Live (TTL) field used to inform the resolver how long the RR may be cached until the resolver needs to send a DNS query asking for the information again. Indicators of compromise are the evidence that an attack has occurred. Explanation: Security traps provide access to the data halls where data center data is stored. Explanation: Syslog operations include gathering information, selecting which type of information to capture, and directing the captured information to a storage location. A user is curious about how someone might know a computer has been infected with malware. This function is disabled by default on the ASA and PIX firewalls. 32. Once the bits have been depleted from the entropy pool, a new pool will be created containing random bits. 152. DNS implementations use the transaction ID along with the source port value to synchronize the responses to previously sent query messages. Why is there no output displayed when the show command is issued? Use the none keyword when configuring the authentication method list. After authentication succeeds, normal traffic can pass through the port. What is the main factor that ensures the security of encryption of modern algorithms? Using /dev/random will assist BIND in generating random DNS transaction IDs. 81. Which type of cryptographic key should be used in this scenario? OSPF authentication does not provide faster network convergence, more efficient routing, or encryption of data traffic. 150. If the network traffic stream is encrypted, HIPS is unable to access unencrypted forms of the traffic. Administrators should consider these as guidelines and evaluate these events in the context of their network to determine if these events represent malicious activities. Script kiddies create hacking scripts to cause damage or disruption. Filtering unwanted traffic before it enters low-bandwidth links preserves bandwidth and supports network functionality. Which action do IPsec peers take during the IKE Phase 2 exchange? Explanation: Traffic originating from the public network and traveling toward the DMZ is selectively permitted and inspected. DNS Amplification or Reflection Attack Source: A high rate of DNS traffic from your DNS server with a source port of 53 (attacker) destined to other networks (attack targets). Configuration of DNS Guard through DNS application inspection and MPF will be demonstrated in the following DNS application inspection configuration section. To indicate the CLI EXEC mode, ASA uses the % symbol whereas a router uses the # symbol. What provides both secure segmentation and threat defense in a Secure Data Center solution? Additional information about Fast-Flux is available inKnow Your Enemy: Fast-Flux Service Networks. Enable DHCP snooping on VLAN 100 Explanation: Privilege levels may not provide desired flexibility and specificity because higher levels always inherit commands from lower levels, and commands with multiple keywords give the user access to all commands available for each keyword. Table 2. Explanation: After the crypto map command in global configuration mode has been issued, the new crypto map will remain disabled until a peer and a valid access list have been configured. (Choose two.). What are two examples of DoS attacks? NAT can be implemented between connected networks. 19. Which pair of crypto isakmp key commands would correctly configure PSK on the two routers? 115. Explanation: The components of the login block-for 150 attempts 4 within 90 command are as follows:The expression block-for 150 is the time in seconds that logins will be blocked.The expression attempts 4 is the number of failed attempts that will trigger the blocking of login requests.The expression within 90 is the time in seconds in which the 4 failed attempts must occur. CLI views have passwords, but superviews do not have passwords. Cisco Secure Firewall ASA Series Syslog Messages . IPINIP 12 0.0 2 20 0.0 1.1 60.8 It is possible to use different regular expressions with the. Explanation: When an AAA user is authenticated, RADIUS uses UDP port 1645 or 1812 for authentication and UDP port 1646 or 1813 for accounting. Which security implementation will provide management plane protection for a network device? 62. Explanation: A wildcard mask uses 0s to indicate that bits must match. An administrator is trying to develop a BYOD security policy for employees that are bringing a wide range of devices to connect to the company network. Frames from PC1 will be forwarded since the switchport port-security violation command is missing. (Choose two.). Configure Virtual Port Group interfaces. Step 4. ! Which two options are security best practices that help mitigate BYOD risks? 76. In strict mode, the Unicast RPF feature uses the local routing table to determine if the source address within a packet is reachable through the interface on which the packet was received. Which two options can limit the information discovered from port scanning? specifying source addresses for authentication, authorization with community string priority, host 192.168.1.3, host 192.168.1.4, and range 192.168.1.10 192.168.1.20, host 192.168.1.4 and range 192.168.1.10 192.168.1.20. ), What are the three components of an STP bridge ID? This malicious technique makes it difficult for operators to use traceback methods and identify compromised hosts participating in the Fast-Flux network. RADIUS provides encryption of the complete packet during transfer. The last four bits of a supplied IP address will be ignored. Gi0/0 192.0.2.4 Gi0/1 192.168.60.100 11 0B66 0035 18 One approach for controlling what DNS queries are permitted to exit the network under an operators control is to only allow DNS queries sourced from the internal recursive DNS resolvers. Establish protection, detection, response, and user access coverage to defend your endpoints. (Choose two. Project-based consulting Our experts help you plan, design, and implement new project-based technology transformations. Refer to the exhibit. This document is part of the Cisco Security portal. 86. (Choose two.). A security policy requiring passwords to be changed in a predefined interval further defend against the brute-force attacks. The only traffic denied is ICMP-based traffic. Chapter Title. The configure terminal command is rejected because the user is not authorized to execute the command. Privilege levels must be set to permit access control to specific device interfaces, ports, or slots. If a public key encrypts the data, the matching private key decrypts the data. To use these configurations, apply them to the options section in the 'named.conf' configuration file. 88. Unlock the full benefits of your Cisco software, both on-premises and in the cloud. The certificate revocation list (CRL) and Online Certificate Status Protocol (OCSP), are two common methods to check a certificate revocation status. What tool is available through the Cisco IOS CLI to initiate security audits and to make recommended configuration changes with or without administrator input? Refer to the exhibit. If the requested information for the DNS query message does not exist, the DNS server will respond with a NXDOMAIN (Non-Existent Domain) DNS response message or a DNS Referral Response message. Place standard ACLs close to the destination IP address of the traffic. Commands cannot be added directly to a superview but rather must be added to a CLI view and the CLI view added to the superview. What is a limitation to using OOB management on a large enterprise network? (Choose three. What statement describes the risk of using social networking? This lets us find the most appropriate writer for any type of assignment. Explanation: The access list LIMITED_ACCESS will block ICMPv6 packets from the ISP. Verify that the security feature is enabled in the IOS. (Choose two.). These controls are described in the following sections. verified attack traffic is generating an alarmTrue positive, normal user traffic is not generating an alarmTrue negative, attack traffic is not generating an alarmFalse negative, normal user traffic is generating an alarmFalse positive. DH (Diffie-Hellman) is an algorithm used for key exchange. Which algorithm can ensure data integrity? Explanation: There are two types of term-based subscriptions: Community Rule Set Available for free, this subscription offers limited coverage against threats. You have to finish following quiz, to start this quiz: document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); document.getElementById("ak_js_2").setAttribute("value",(new Date()).getTime()); An administrator defined a local user account with a secret password on router R1 for use with SSH. Operators may also configure BIND to only listen on specific interfaces using the 'listen-on' or 'listen-on-v6' options configuration. (Choose three. (Choose three.). What function is provided by Snort as part of the Security Onion? Explanation: PVLANs are used to provide Layer 2 isolation between ports within the same broadcast domain. and have been updated by multiple RFCs over the years. If a private key is used to encrypt the data, a private key must be used to decrypt the data. The IDS works offline using copies of network traffic. First, set the host name and domain name. The security policy in a company specifies that employee workstations can initiate HTTP and HTTPS connections to outside websites and the return traffic is allowed. The network administrator for an e-commerce website requires a service that prevents customers from claiming that legitimate orders are fake. The following diagram illustrates a sample of the Domain Name System hierarchy starting from the root ".". (Choose two.). The interfaces of the ASA separate Layer 3 networks and require IP addresses in different subnets. The hostname to IP address mapping for devices in the requested domain name space will rapidly change (usually anywhere from several seconds to a few minutes). Several security controls can be implemented to limit spoofing. (Choose three.). This syslog message indicates that the DNS response message received has been denied. Another potentially malicious use of a short TTL is using a value of 0. In loose mode Unicast RPF, if the source address of a packet is reachable through any interface on the Unicast RPF enabled device, the packet is permitted. TCP-WWW 77625 0.0 14 570 0.2 10.1 38.5 TP-Link: Newer TP-Link routers (Archer series): Click on the Advanced Tab. Public and private keys may be used interchangeably. router#show ip cache flow What functional area of the Cisco Network Foundation Protection framework is responsible for device-generated packets required for network operation, such as ARP message exchanges and routing advertisements? (Choose three.). 89. Explanation: Confidential data should be shredded when no longer required. This type of traffic is typically email, DNS, HTTP, or HTTPS traffic. 118. A corresponding policy must be applied to allow return traffic to be permitted through the firewall in the opposite direction. OOB management requires the creation of VPNs. What are two security measures used to protect endpoints in the borderless network? DNS-Specific Signatures Provided on the Cisco IPS Appliance with Signature Pack S343. Which two conclusions can be drawn from the syslog message that was generated by the router? Explanation: After a user is successfully authenticated (logged into the server), the authorization is the process of determining what network resources the user can access and what operations (such as read or edit) the user can perform. Explanation: Symmetric encryption algorithms use the same key (also called shared secret) to encrypt and decrypt the data. Professional academic writers. Which parameter can be used in extended ACLs to meet this requirement? 64. What ports can receive forwarded traffic from an isolated port that is part of a PVLAN? Give the router a host name and domain name. (Choose two.). Explanation: The webtype ACLs are used in a configuration that supports filtering for clientless SSL VPN users. A network analyst is configuring a site-to-site IPsec VPN. Even though the DNS message sent by the attacker is falsified, the DNS resolver accepts the query response because the transaction ID and source port value match up with the query the resolver sent, resulting in the DNS resolvers cache being poisoned. If the object in the message is a TCP or UDP port, an IP address, or a host drop, check whether or not the drop rate is acceptable for the running environment. We truly value your contribution to the website. DesignConfigures device global settings, network site profiles for physical device inventory, DNS, DHCP, IP addressing, SWIM repository, device templates, and telemetry configurations such as Syslog, SNMP, and NetFlow. Modules 20 - 22: ASA Group Exam Answers: Network Security 1.0 Practice Final Exam Answers: Network Security 1.0 Final PT Skills Exam (PTSA) Answers: IPS on Cisco ISRs Answers. Devices within that network, such as terminal servers, have direct console access for management purposes. Each sales office has a SOHO network. Our global writing staff includes experienced ENL & ESL academic writers in a variety of disciplines. Explanation: There are five steps involved to create a view on a Cisco router.1) AAA must be enabled.2) the view must be created.3) a secret password must be assigned to the view.4) commands must be assigned to the view.5) view configuration mode must be exited. 146. ASA uses the ? HMAC uses a secret key as input to the hash function, adding authentication to integrity assurance. supplicantThe interface acts only as a supplicant and does not respond to messages that are meant for an authenticator. Protocol Total Flows Packets Bytes Packets Active(Sec) Idle(Sec) Establish protection, detection, response, and user access coverage to defend your endpoints. What functionality is provided by Cisco SPAN in a switched network? 79. Because DNS is such a critical protocol for Internet operations, countless operating systems, and applications, operators and administrators must harden DNS servers to prevent them from being used maliciously. A virus can be used to launch a DoS attack (but not a DDoS), but a worm can be used to launch both DoS and DDoS attacks. L0phtcrack provides password auditing and recovery. (Choose two.). Some of these flaws are presented in this document to inform operators how they can be used maliciously. ! Secunia delivers software security research that provides reliable, curated and actionable vulnerability intelligence. R1 will open a separate connection to the TACACS server on a per source IP address basis for each authentication session. The date and time displayed at the beginning of the message indicates that service timestamps have been configured on the router. To understand DNS and the DNS-specific recommendations in this document, it is important that operators and administrators are familiar with the following terms: DNS primarily translates hostnames to IP addresses or IP addresses to hostnames. (Choose two.). GRE 4952 0.0 47 52 0.0 119.3 0.9 In the following example, theshow logging | grepregexcommand extracts syslog messages from the logging buffer on the firewall. Traffic originating from the DMZ network going to the inside network is permitted. What type of network security test can detect and report changes made to network systems? A DNS traffic capture utility that provides DNS-specific functionality beyond that of tcpdump. A security service company is conducting an audit in several risk areas within a major corporation. Cisco Secure network security products include firewalls, intrusion prevention systems, secure access systems, security analytics, and malware defense. so that the switch stops forwarding traffic, so that legitimate hosts cannot obtain a MAC address, so that the attacker can execute arbitrary code on the switch. Which type of firewall makes use of a server to connect to destination devices on behalf of clients? Letters of the message are rearranged based on a predetermined pattern. The first 28 bits of a supplied IP address will be ignored. Use the login local command for authenticating user access. 73. UDP-other 923777 0.2 8 382 1.7 8.9 22.8 Which two additional layers of the OSI model are inspected by a proxy firewall? PC1 has a different MAC address and when attached will cause the port to shut down (the default action), a log message to be automatically created, and the violation counter to increment. Explanation: Many companies now support employees and visitors attaching and using wireless devices that connect to and use the corporate wireless network. 6. 55. Explanation: Common ACEs to assist with antispoofing include blocking packets that have a source address in the 127.0.0.0/8 range, any private address, or any multicast addresses. Cisco Secure Firewall ASA Series Syslog Messages . last clearing of statistics never Which three additional steps are required to configure R1 to accept only encrypted SSH connections? Note:Recursion is enabled by default for Version 9.5 of the BIND software and prior. and may contain a maximum of 63 characters. Based on the security levels of the interfaces on ASA1, what traffic will be allowed on the interfaces? ZPF allows interfaces to be placed into zones for IP inspection. Which attack is defined as an attempt to exploit software vulnerabilities that are unknown or undisclosed by the vendor? Create a firewall rule blocking the respective website. 4.4.8 Packet Tracer Configure Secure Passwords and SSH Answers. Privilege levels cannot specify access control to interfaces, ports, or slots. Traffic from the Internet can access both the DMZ and the LAN. The internal hosts of the two networks have no knowledge of the VPN. An IDS is deployed in promiscuous mode. Set up an authentication server to handle incoming connection requests. switchport What function is performed by the class maps configuration object in the Cisco modular policy framework? The analyst has just downloaded and installed the Snort OVA file. They use a pair of a public key and a private key. IP Sub Flow Cache, 336520 bytes A network administrator has been tasked with securing VTY access to a router. However, because it requires DHCP to remain manageable, it is not possible to deploy IP source guard on internal-to-external network boundaries. An IDS needs to be deployed together with a firewall device, whereas an IPS can replace a firewall. Messages reporting the link status are common and do not require replacing the interface or reconfiguring the interface. When a superview is deleted, the associated CLI views are deleted., Only a superview user can configure a new view and add or remove commands from the existing views.. Entering a second IP address/mask pair will replace the existing configuration. (Not all options are used. ", which is the top most level of the DNS hierarchy. (Not all options are used.). 113. 148. 13. Explanation: Email is a top attack vector for security breaches. The following subsections will provide an overview of these features and the capabilities they can provide. Fix the ACE statements so that it works as desired inbound on the interface. Which attack involves threat actors positioning themselves between a source and destination with the intent of transparently monitoring, capturing, and controlling the communication? Firewall syslog message106007will be generated when the firewall detects that a DNS response message has already been received for a DNS query message and the connection entry has been torn down by the DNS guard function. What is the next step? The following example provides information on how to disable recursion for the DNS Server service using the Windows Command-Line) CLI. This method differs from the Fast-Flux technique that uses a short TTL value and operators are able to use traceback techniques to more easily identify malicious hosts distributing this information. From the root zone, the DNS hierarchy is then split into sub-domain (branches) zones. These integrated, scalable solutions address the fast-changing challenges you face in safeguarding your organization. The interface on Router03 that connects to the time sever has the IPv4 address 209.165.200.225. This makes these implementations prone to cache poisoning and spoofing attacks. Attackers analyze the transaction ID values generated by the DNS implementation to create an algorithm that can be used to predict the next DNS transaction ID used for a query message. IGMP 10 0.0 2 20 0.0 7.5 60.9 This feature is enabled by default and is available on Cisco ASA, Cisco PIX and Cisco FWSM Firewalls. Cisco Secure Firewall ASA New Features by Release -Release Notes: Cisco Secure Firewall ASA New Features by Release ASA provides protection against CSRF attacks for WebVPN handlers. Two popular algorithms that are used to ensure that data is not intercepted and modified (data integrity) are MD5 and SHA. Gi0/0 192.0.2.5 Gi0/1 192.168.60.162 11 0914 0035 1 A network administrator has configured NAT on an ASA device. Network Security Exam Answers Version 1.0 Full Labs, Network Security (Version1.0) Modules 5 7: Monitoring and Managing Devices Group Test Online, Modules 1 - 4: Securing Networks Group Exam Answers, Modules 5 - 7: Monitoring and Managing Devices Group Exam Answers, Modules 8 - 10: ACLs and Firewalls Group Exam Answers, Modules 11 - 12: Intrusion Prevention Group Exam Answers, Modules 13 - 14: Layer 2 and Endpoint Security Group Exam Answers, Modules 15 - 17: Cryptography Group Exam Answers, 1.2.7 Check Your Understanding Network Topology Protection Overview Answers, 8.1.5 Packet Tracer ACL Demonstration Answers, Module 2: Quiz Network Threats (Answers) Network Security, 19.5.5 Packet Tracer Configure and Verify a Site-to-Site IPsec VPN Answers, Modules 5 7: Monitoring and Managing Devices Group Exam Answers Full, 2.5.7 Check Your Understanding Identify the Types of Network Attacks Answers, Network Security (Version1.0) Modules 18 19: VPNs Group Test Online, 18.3.9 Check Your Understanding IPsec Answers, 18.2.5 Check Your Understanding Compare Remote-Access and Site-to-Site VPNs Answers, 18.4.6 Check Your Understanding Compare AH and ESP Answers, CCNA 1 v7 Modules 1 3: Basic Network Connectivity and Communications Test Online, ITN (Version 7.00) Final PT Skills Assessment (PTSA) Exam Answers, CCNA1 v7.0: ITN Practice PT Skills Assessment (PTSA) Answers, CCNA 2 v7 Modules 10 13: L2 Security and WLANs Exam Answers, The following methods are used by hackers to avoid detection:Encryption and tunneling hide or scramble the malware content, Resource exhaustion keep the host device too busy to detect the invasion, Traffic fragmentation split the malware into multiple packets, Protocol-level misinterpretation sneak by the firewall, Pivot use a compromised network device to attempt access to another device, Rootkit allow the hacker to avoid detection as well as hide software installed by the hacker, Appearance of files, applications, or desktop icons, Security tools such as antivirus software or firewalls turned off or changed, Connections made to unknown remote devices. DNS cache poisoning attacks commonly use multiple responses to each query as the attacker attempts to predict or brute force the transaction ID and the UDP source port to corrupt the DNS cache. 151. Safeguards must be put in place for any personal device being compromised. In the implementation of security on multiple devices, how do ASA ACLs differ from Cisco IOS ACLs? Nmap and Zenmap are low-level network scanners available to the public. Refer to the exhibit. (Choose two. Multiple inspection actions are used with ZPF. In the unlikely occurrence that the malicious DNS response arrives first and with the correct transaction ID, then the firewall is unable to prevent DNS cache poisoning type attacks. ), 46What are the three components of an STP bridge ID? Administrators should compare these flows to baseline utilization for DNS traffic on UDP port 53 and also investigate the flows to determine whether they are potential malicious attempts to abuse flaws in implementations of the DNS protocol. Hence you can not start it again. Immediately suspend the network privileges of the user. A researcher is comparing the differences between a stateless firewall and a proxy firewall. Disabling DTP and configuring user-facing ports as static access ports can help prevent these types of attacks. Commandes Cisco CCNA Exploration. Rights and activities permitted on the corporate network must be defined. Explanation: The IPsec framework uses various protocols and algorithms to provide data confidentiality, data integrity, authentication, and secure key exchange. Consider the access list command applied outbound on a router serial interface. The username and password would be easily captured if the data transmission is intercepted. These special modules include: Advanced Inspection and Prevention (AIP) module supports advanced IPS capability. Content Security and Control (CSC) module supports antimalware capabilities. Cisco Advanced Inspection and Prevention Security Services Module (AIP-SSM) and Cisco Advanced Inspection and Prevention Security Services Card (AIP-SSC) support protection against tens of thousands of known exploits. What would be the primary reason an attacker would launch a MAC address overflow attack? Explanation: Until the workstation is authenticated, 802.1X access control enables only Extensible Authentication Protocol over LAN (EAPOL), Cisco Discovery Protocol (CDP), and Spanning Tree Protocol (STP) traffic through the port to which the workstation is connected. 77. Note:Although use of this command does reduce the possibility of being a victim of a DNS Amplification Denial of Service attack, it is more likely to prevent the DNS server from used as part of the source of a DNS Amplification attack. Which access-list entry accomplishes this task? This feature is available beginning with software release 3.1 for FWSM Firewalls. Issue the show crypto ipsec sa command to verify the tunnel. ! Labels are separated with "." HMAC uses protocols such as SSL or TLS to provide session layer confidentiality. In addition to these application specific signatures, anomaly-based signatures can provide coverage for vulnerabilities such as amplification attacks or cache poisoning, where the rate of DNS transactions are likely to vary significantly. Which two statements describe the characteristics of symmetric algorithms? Which two types of hackers are typically classified as grey hat hackers? Explanation: SPAN is a Cisco technology used by network administrators to monitor suspicious traffic or to capture traffic to be analyzed. This function is enabled by default with a limit of 512 bytes. Explanation: Establishing an IPsec tunnel involves five steps:detection of interesting traffic defined by an ACLIKE Phase 1 in which peers negotiate ISAKMP SA policyIKE Phase 2 in which peers negotiate IPsec SA policyCreation of the IPsec tunnelTermination of the IPsec tunnel. ICMP 109260 0.0 3 125 0.0 23.7 52.5 107. Other configuration options for BIND are available for limiting how devices can obtain answers to recursive DNS messages. What are the three components of an STP bridge ID? 29. Once the recursive DNS resolver has obtained this information, it will provide that information to the original DNS resolver using a DNS response message and the RR will be non-authoritative (since the recursive DNS resolver is not authoritative for the requested information). Threat defense includes a firewall and intrusion prevention system (IPS). switchport access vlan 100 What three types of attributes or indicators of compromise are helpful to share? 136. Which protocol or measure should be used to mitigate the vulnerability of using FTP to transfer documents between a teleworker and the company file server? What is the main difference between the implementation of IDS and IPS devices? It inspects voice protocols to ensure that SIP, SCCP, H.323, and MGCP requests conform to voice standards. 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