By not relying on a specific algorithm, it allows the suite to be modified in the future to support even more security methods. It operates at the network layer, encrypting IP packets making them confidential so that only the receiving device can accept and read them. In addition, it uses checksums to see if the data packet has been manipulated during transfer. IPsec uses Internet Key Exchange to ensure authentication with usernames, passwords, pre shared keys and digital certificates For IPsec, AES is considered the best form of encryption available. It uses a 128 bit shared secret key to decrypt and encrypt data being sent through the VPN.
Which of the following account lockout policy modifications could you make to ensure that user passwords cannot be intercepted by analyzing captured packets? (D) Disable the Store Passwords Using Reversible Encryption policy 2. Which of the following mechanisms is most often used in firewall rules to allow traffic on to the network? (D) Port numbers 3. Which of the following NTFS features is incompatible with EFS encryption?
2. Which of the following standalone devices can be found near the Internet edge, with a primary purpose of providing some type of network security between an enterprise or SOHO TCP/IP network and the Internet? (Choose two answers.) a. LAN access point b. IPS c. Analog modem d. Firewall Answer: B, D. A firewall normally sits inline, in the packet-forwarding path, choosing which packets to allow and disallow. An intrusion prevention system (IPS) can sit inline or outside the packet-forwarding path, reporting on complex attacks based on combinations of events.
Step 2: If ARP resolution is not there in local cache, the source machine will generate an Address Resolution Protocol (ARP) request message, it puts its own data link layer address as the Sender Hardware Address and its own IPv4 Address as the Sender Protocol Address. It fills the destination IPv4 Address as the Target Protocol Address. The Target Hardware Address will be left blank, since the machine is trying to find that. Step 3: The source broadcast the Address Resolution Protocol (ARP) request message to the local network. Step 4: The message is received by each device on the LAN since it is a broadcast.
NT2640 Unit 2 Assignment 1 1. What organization has been given the responsibility for assigning protocol numbers? * Internet Assigned Numbers Authority (IANA) 2. Determine the protocol numbers for the protocol names: Protocol | Number | IPv4 | 4 | IPv6 | 41 | TCP | 6 | UDP | 17 | ICMP | 1 | VRRP | 112 | IPSEC ESP | 50 | L2TP | 115 | OSPF | 89 | EIGRP | 88 | 3. Determine the correct ICMP type based on the description provided: ICMP Message Description | Type | Code | Echo | 8 | | Echo Reply | 0 | | Time Exceeded | 11 | | Port Unreachable | 3 | 3 | Fragmentation Needed | 3 | 4 | 4.
Crypto isakmp enable Crypto isakmp policy 110 Authentication pre-share Encryption des Group 1 Hash md5 Lifetime 43200 Exit Crypto isakmp key cisco1234 address 220.127.116.11 crypto ipsec transform-set TSet esp-des esp-md5-hmac mode tunnel exit access-list 102 permit tcp any any crypto map CMap 10 ipsec-isakmp match address 102 set transform-set TSet set peer 18.104.22.168 exit interface s0/1 crypto map CMap exit Task 2—Configure a Site-to-Site IPSec VPN on the Chicago Router • After you have completed typing in the Chicago IPSec configuration commands, highlight the commands you typed in using your mouse (click and drag) or the keyboard ( + Arrow keys) use A to select all of the commands in the Chicago configuration file. Use C to put the commands in the clipboard. Use V to paste these commands into the table cell provided in the lab report
DHCP Server 10.10.0.11 | Question 8 | If the answer to #7 was not the IP address of the SEA-SVR1 computer, why might this have happened? It was | Question 9 | What nodes appear underneath the DHCP scope that you created in Exercise 1? Address Pool, Address Leases, Reservations, Scope Options | Question 10 | What appears in the IP address text box?10.10.0.10 the Ip address of the Domain Controller | Question 11 | What value is configured in the DNS Servers: line? 10.10.0.10 | Question 12 | What value is configured in the DNS Servers: line?10.10.0.10 | Question 13 | What is the default location for DHCP server backups? C:\windows\system32\dhcp\backup\ | Question 14 | What IP address is configured on the SEA-SVR2computer?169.254.209.252 | Question 15 | What appears in the IP address text box?10.10.0.55 | Question 16 | From which DHCP server are you receiving an IP
Table for Individual Question FeedbackPoints Earned:1.0/1.0Correct Answer(s):C 3. __________ is the process of confirming a user’s identity, usually by requiring the user to supply some sort of token, such as a password or certificate. Table for Individual Question FeedbackPoints Earned:0.0/1.0Correct Answer(s):Authentication 4. SMTP server is essentially the Windows counterpart to the __________ program used by most UNIX Web servers. Table for Individual Question FeedbackPoints Earned:0.0/1.0Correct Answer(s):sendmail; Sendmail 5.
In telecom closet 2, from the punch down block, to the switches, to the wall plates, and on to the offices workstation, plus one shared printer, cabling will change to Cat 5e UTP, using 1000 Base-T technology, achieving a throughput of 1000Mbps. A safety feature on Ethernet Lans, is its access method, CSMA/CD. CSMA/CD, means that your NIC checks the network to make sure it is not busy before transmitting, if two nodes do transmit at the same time having a collision, it will send out packets to inform other nodes of a data collision, then the NIC waits for the network to be inactive before retransmitting. On the
Research Assignment II: 1. What is the purpose of the Global Names Zones in Windows Server 2008 DNS Servers? The Global Names Zones is a new function from Windows Server 2008 which offers an organization move to a DNS only environment, eliminating the need of having a WINS Server in the network. If an user request a resource in the NETBIOS Name by adding only the Domain Suffix, the request is send to the DNS Server. If the Global Name Zone had the name, it will respond back to the user but if it doesn’t had the query then the authoritative zone will check for the name.