hostname R1R2(config)# crypto isakmp key 5tayout! /dev/randomis recommended because it creates an entropy pool (a group of random bits stored in one place) for generating unpredictable random numbers. Disabling the Spanning Tree Protocol (STP) will not eliminate VLAN hopping attacks. 76. What type of network security test can detect and report changes made to network systems? Match the security term to the appropriate description. 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. last clearing of statistics never 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. It prevents traffic on a LAN from being disrupted by a broadcast storm. (Choose two.). What are two security features commonly found in a WAN design? Which command will block login attempts on RouterA for a period of 30 seconds if there are 2 failed login attempts within 10 seconds? Password requirements: 6 to 30 characters long; ASCII characters only (characters found on a standard US keyboard); must contain at least 4 different symbols; Users on the 192.168.10.0/24 network are not allowed to transmit traffic to any other destination. To use these configurations, apply them to the options section in the 'named.conf' configuration file. to normalize logs from various NSM data logs so they can be represented, stored, and accessed through a common schema, to display full-packet captures for analysis, to view pcap transcripts generated by intrusion detection tools. 3. What action should the administrator take first in terms of the security policy? Explanation: In general, a router serves as the default gateway for the LAN or VLAN on the switch. All other traffic is allowed. SrcIf SrcIPaddress DstIf DstIPaddress Pr SrcP DstP Pkts A packet filtering firewall is able to filter sessions that use dynamic port negotiations while a stateful firewall cannot. Messages reporting the link status are common and do not require replacing the interface or reconfiguring the interface. Which two types of attacks are examples of reconnaissance attacks? Table 1. 101. (Choose three.). 123. http://dns.measurement-factory.com/tools/dnstop/. Explanation: An application gateway firewall, also called a proxy firewall, filters information at Layers 3, 4, 5, and 7 of the OSI model. Create a banner that will be displayed to users when they connect. ! switchport This is also known as codebreaking. 130. This type of traffic is typically email, DNS, HTTP, or HTTPS traffic. ASA uses the ? Explanation: Snort is a NIDS integrated into Security Onion. To defend against the brute-force attacks, modern cryptographers have as an objective to have a keyspace (a set of all possible keys) large enough so that it takes too much money and too much time to accomplish a brute-force attack. 126. http://www.caida.org/tools/utilities/dnsstat/. First, set the host name and domain name. An authoritative DNS server distributes information to DNS resolvers for authorative domain name space. 133. This lets us find the most appropriate writer for any type of assignment. Explanation: Data integrity guarantees that the message was not altered in transit. The impact of these attacks may require the device to be rebooted or a service to be stopped and restarted. This message indicates that the interface should be replaced. Refer to the exhibit. Which type of firewall makes use of a server to connect to destination devices on behalf of clients? 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. Additional information about DNS application inspection and the Modular Policy Framework is available inHow DNS Application Inspection Works. This subscription is fully supported by Cisco. Frames from PC1 will be dropped, and a log message will be created. Which threat protection capability is provided by Cisco ESA? Explanation: Tripwire This tool assesses and validates IT configurations against internal policies, compliance standards, and security best practices. Explanation: The IPsec framework consists of five building blocks. It combines authentication and authorization into one process; thus, a password is encrypted for transmission while the rest of the packet will be sent in plain text. Buy an ASA. Deleting a superview does not delete the associated CLI views. Traffic that is originating from the public network is usually forwarded without inspection when traveling to the DMZ network. RADIUS hides passwords during transmission and does not encrypt the complete packet. return traffic to be permitted through the firewall in the opposite direction. 49. These sections of the DNS message contain fields that determine how the message will be processed by the device receiving the message. Generate a set of secret keys to be used for encryption and decryption. 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. Refer to the exhibit. MIB search Home. Strict mode Unicast RPF can be enabled on the Cisco PIX, ASA, and FWSM firewalls using theip verify reverse-path interfaceinterfaceconfiguration command. Create a firewall rule blocking the respective website. This means that the security of encryption lies in the secrecy of the keys, not the algorithm. All devices must have open authentication with the corporate network. The tree-like data structure for the domain name space starts at the root zone ". The time on Router03 may not be reliable because it is offset by more than 7 seconds to the time server. 5. (Choose three. If a CSRF attack is detected, a user is notified by warning messages. 50 How do modern cryptographers defend against brute-force attacks? A packet filtering firewall will prevent spoofing by determining whether packets belong to an existing connection while a stateful firewall follows pre-configured rule sets. A company has several sales offices distributed within a city. This white paper provides information on general best practices, network protections, and attack identification techniques that operators and administrators can use for implementations of the Domain Name System (DNS) protocol. The code was encrypted with both a private and public key. SIEM is used to provide real-time reporting of security events on the network. Placing a standard ACL close to the source may have the effect of filtering all traffic, and limiting services to other hosts. Last update on 2022-12-10 at 00:36 / Affiliate links / Images from Amazon Product Advertising API. 125. Enable SSH on the physical interfaces where the incoming connection requests will be received. address 64.100.0.1, R1(config)# crypto isakmp key 5tayout! Refer to the exhibit. This malicious technique makes it difficult for operators to use traceback methods and identify compromised hosts participating in the Fast-Flux network. Explanation: Secure segmentation is used when managing and organizing data in a data center. Explanation: The reason to configure OSPF authentication is to mitigate against routing protocol attacks like redirection of data traffic to an insecure link, and redirection of data traffic to discard it. Explanation: Syslog operations include gathering information, selecting which type of information to capture, and directing the captured information to a storage location. Use the aaa local authentication attempts max-fail global configuration mode command with a higher number of acceptable failures. Explanation: When an AAA user is authenticated, RADIUS uses UDP port 1645 or 1812 for authentication and UDP port 1646 or 1813 for accounting. Although it can easily be used in business environments (hospitality, office, education, retail shops etc), because of its low price, compact design and The IPv6 access list LIMITED_ACCESS is applied on the S0/0/0 interface of R1 in the inbound direction. Which two protocols generate connection information within a state table and are supported for stateful filtering? Traffic that is originating from the public network is usually blocked when traveling to the DMZ network. for more information on how to configure Access Control Lists. These are likely to use large DNS packets to increase their efficiency; however large packets are not a requirement. Integrity is ensured by implementing either of the Secure Hash Algorithms (SHA-2 or SHA-3). The purpose of IKE Phase 2 is to negotiate a security association between two IKE peers. What are three attributes of IPS signatures? The following example provides information on how to disable recursion for the DNS Server service using the Windows Command-Line) CLI. Place standard ACLs close to the source IP address of the traffic. These sections also contain information about the question (query messages) a device is asking or answers (response messages) a device may be providing. What three types of attributes or indicators of compromise are helpful to share? A company is concerned with leaked and stolen corporate data on hard copies. A stateful firewall will provide more logging information than a packet filtering firewall. (Choose three. Which conclusion can be made from the show crypto map command output that is shown on R1? 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. Attacks of these types use multiple DNS open resolvers so the effects on the target devices are magnified. Explanation: An IPS is deployed in inline mode and will not allow malicious traffic to enter the internal network without first analyzing it. 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. Issue the show crypto ipsec sa command to verify the tunnel. Which component of this HTTP connection is not examined by a stateful firewall? Which IPv6 packets from the ISP will be dropped by the ACL on R1? ip access-group ACL-ANTISPOOF-IN in 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 technologies provide enterprise-managed VPN solutions? Which two types of hackers are typically classified as grey hat hackers? (Choose two.). Public and private keys may be used interchangeably. 109. 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. 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. The following steps provide information on how to disable recursion for the DNS Server service using the Windows User Interface (UI). Which two options are security best practices that help mitigate BYOD risks? What are two common malware behaviors? Disabling DTP and configuring user-facing ports as static access ports can help prevent these types of attacks. Which algorithm can ensure data integrity? ), What are two differences between stateful and packet filtering firewalls? (Choose two. If a private key encrypts the data, the corresponding public key decrypts the data. (Choose two.). In the preceding example, there are multiple flows for DNS packets on UDP port 53 (hex value 0035). The traffic must flow through the router in order for the router to apply the ACEs. In many cases, these signatures may require baselining and tuning to accurately detect attacks. 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. Which Cisco solution helps prevent ARP spoofing and ARP poisoning attacks? Match each SNMP operation to the corresponding description. Note that this feature is enabled by default on Windows 2000 Service Pack 3 (SP3) and Windows Server 2003, and that using this feature will also produce more queries sent from the DNS server. (Choose three. Explanation: The webtype ACLs are used in a configuration that supports filtering for clientless SSL VPN users. 104. Additional information about regular expression syntax is available inUsing the Command Line Interface. response message packets due to an incorrect DNS transaction ID or a DNS response message with the correct transaction ID has already been received. These attacks are possible because the open resolver will respond to queries from anyone asking a question. The network security policy specifies that the Public folder is assigned Read-Only rights to anyone who can log into the server while the Edit rights are assigned only to the network admin group. Entering a second IP address/mask pair will replace the existing configuration. The dhcpd auto-config outside command was issued to enable the DHCP server. Which type of cryptographic key should be used in this scenario? Theid-randomizationparameters submode command forpolicy-map type inspect dnscan be used to randomize the DNS transaction ID for a DNS query. ), 100. TACACS provides separate authorization and accounting services. 120. TCP-BGP 1688 0.0 3 44 0.0 13.9 60.6 This feature is available beginning with software release 7.2(1) for Cisco ASA and Cisco PIX Firewalls. If you configure these types of ACLs, seek an up-to-date reference that is conclusive. What is the next step? Threat defense includes a firewall and intrusion prevention system (IPS). The analyst has configured both the ISAKMP and IPsec policies. It is commonly implemented over dialup and cable modem networks. Which pair of crypto isakmp key commands would correctly configure PSK on the two routers? An administrator discovers that a user is accessing a newly established website that may be detrimental to company security. Explanation: A symmetric key requires that both routers have access to the secret key that is used to encrypt and decrypt exchanged data. A tool that will monitor and display DNS messages seen on the network. 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. What are two reasons to enable OSPF routing protocol authentication on a network? Note: This is the default !-- configuration and value based on RFC 1035. When describing malware, what is a difference between a virus and a worm? IP Flow Switching Cache, 4456704 bytes (Choose two.). 142. Both have a 30-day delayed access to updated signatures. If AAA is already enabled, which three CLI steps are required to configure a router with a specific view? DNS uses both the source port value and transaction ID for tracking queries and the responses to queries. (Choose two. (Choose two.). 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. Network scanning is used to discover available resources on the network. How to find: Press Ctrl + F in the browser and fill in whatever wording is in the question to find that question/answer. )if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'itexamanswers_net-medrectangle-3','ezslot_9',167,'0','0'])};__ez_fad_position('div-gpt-ad-itexamanswers_net-medrectangle-3-0'); 2. 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. This feature is available beginning with software release 7.2(1) for Cisco ASA and Cisco PIX 500 Firewalls. Two popular algorithms used to ensure that data is not intercepted and modified (data integrity and authenticity) are MD5 and SHA. ), What are two data protection functions provided by MDM? Which access-list entry accomplishes this task? Verify Snort IPS. Establish protection, detection, response, and user access coverage to defend your endpoints. 119. If a public key is used to encrypt the data, a private key must be used to decrypt the data. What are two security features that are commonly found in such a network configuration? Some DNS implementations use a weak randomization algorithm to generate DNS transaction IDs for DNS query messages. (Not all options are used.). Enable IPS globally or on desired interfaces. Step 7. 14. Consists of the traffic generated by network devices to operate the network. Which two additional layers of the OSI model are inspected by a proxy firewall? Some of these flaws are presented in this document to inform operators how they can be used maliciously. HMAC uses a secret key that is only known to the sender and defeats man-in-the-middle attacks. Check answers here:Modules 1 4: Securing Networks Group Exam Answers Full, Network Security (Version1.0) Modules 1 4: Securing Networks Group Test Online. The interface on Router03 that connects to the time sever has the IPv4 address 209.165.200.225. Note:The source port field for the UDP protocol is only 16 bits in length, so this value can range from 0 through 65535. 79. The first 28 bits of a supplied IP address will be matched. Enabling DNS guard through either the command line DNS Guard function or DNS application inspection provides preventive controls against DNS cache poisoning attacks. A network administrator configures a named ACL on the router. 115. Also, an IDS often requires assistance from other networking devices, such as routers and firewalls, to respond to an attack. Gi0/0 192.0.2.3 Gi0/1 192.168.60.20 11 0C09 0035 1 In general, the following traffic profiles will be associated with these types of attacks; however it is important to note, that depending on NetFlow monitoring location, Network or Port address translation (NAT or PAT) and other variables that these are not absolutes. A stateful firewall provides more stringent control over security than a packet filtering firewall. Andr LAGUERRE. Recursive DNS servers should be used only for responding to queries from DNS resolvers inside its administrative domain. Everything below the ".org" domain name space is in theorgdomain and everything below ".cisco.com" domain name space is in thecisco.comdomain. 48. Which two features are included by both TACACS+ and RADIUS protocols? It is ideally suited for use by mobile workers. (Choose two.). 152. 102. 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. 136. 28. Filter unwanted traffic before it travels onto a low-bandwidth link. The DNS protocol specification and implementation was originally defined in. Domain name space uses Resource Records (RRs) that may or may not exist to store information about the domain. This technique can be used for storing malicious RR information in the cache of a resolver for an extended period of time. Which portion of the Snort IPS rule header identifies the destination port? DNS amplification and reflection attacks use DNS open resolvers to increase the volume of attacks and to hide the true source of an attack, actions that typically result in a DoS or DDoS attack. What will be displayed in the output of the show running-config object command after the exhibited configuration commands are entered on an ASA 5506-X? What statement describes the risk of access to cloud storage devices? Use ISL encapsulation on all trunk links. The only traffic denied is echo-replies sourced from the 192.168.10.0/24 network. 57. RSA is an algorithm used for authentication. Refer to the exhibit. You are more likely to see a UDP flood attack. OSPF authentication does not provide faster network convergence, more efficient routing, or encryption of data traffic. (Choose two.). Cyber criminals use hacking to obtain financial gain by illegal means. Which statement describes a characteristic of the IKE protocol? Open a Command Prompt using the following procedure: Authoritative DNS servers should be used only for responding to queries for domain name space for which the server is administrative. Which two algorithms can be used to achieve this task? Match the IPS alarm type to the description. Control plane: Responsible for routing functions. 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