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- An ISP is granted a block of addresses starting with 129.80.0.0/16. The ISP wants to distribute these blocks to 2600 groups as follows: The first group has 200 medium sized businesses; each need 14 hosts. The second group has 400 small businesses; each need 6 hosts. iii. The third group has 2000 point-to-point links; each need 2 hosts. Design the sub-blocks and give the slash notation for each sub-block. Find out how many addresses are still available after these allocations.Registration Number: 193046 Consider a network with 3 hosts and a NAT router. Suppose that the network address of the home network is 192.168.NNN/24, where NNN are the last 3 digits of your Reg#. For example, if your Reg# is BSE193046, NNN = 046 and therefore the network address wil be 192168.46/24. (If NNN>255, consider NNN=254) (a) Assign any public IP address to NAT router’s outgoing interface. (b) Assign IP addresses to all 3 hosts and local interface of the NAT router in the home network. (SMTP (Simple Mail Transfer Protocol) is the standard protocol for transferring mail between hosts. A TCP connection is set up between a user agent and a server program. The server listens on TCP port 25 for incoming connection requests. The user end of the connection is on a TCP port number above 1023. You have defined the packet filter rule set shown in the table below. These rules permit and/or deny inbound and outbound traffic between the user agent and the mail server. Describe the purpose of each packet filter rule in the table. Rule Direction Source Address Destination Address Protocol Destination Port Action A2 In External Internal TCP 25 Permit B2 Out Internal External TCP > 1023 Permit C2 Out Internal External TCP 25 Permit D2 In External Internal TCP > 1023 Permit E2 Either Any Any Any Any Deny
- Refer to the network figure above, showing two Ethernet Subnets connected through an IP Router, answer the following question 1-5. The devices in each subnet are connected locally to each other through layer two intermediate devices such as Ethernet switch and ethernet hub. For each device in the subnets, both its Internet Protocol (IP )address and its MAC address (also called the Physical address or the Ethernet address are shown. The subnet mask used by all devices is 255.255.255.240 (which is the same as the prefix length “/28”). 1. If Client #1 wants to send a broadcast packet to all the devices on the left subnet (containing client #1, client #2, client #3) what destination IP address should be used? (Mention in both binary and decimal format.) 2. What is the first and last assignable IP address for the left subnet above (containing client #1 and #3)? (Mention in both binary and decimal format.)Write a Java TCP Client-Server Program for Currency Converter as shown below. () CLIENT SERVER IP Address: 128.36.69.6 Domain Name. CurrencyConveret Port : 2834 NOTE Server Details are in the above figure > Client-Server communicates continuously until the Client send Bye to the Server NOTE: 1 SAR = 0.26 USD (US Dollar) 1 SAR = 0.24 EUR (Euro) 1 SAR = 0.20 GBP (British Pound) 1 SAR = 1.73 CNY (Chines Yuan) Sample Output: Client From Server Present Currency Rates: 1 SAR = 0.26 USD (US Dollar) 1 SAR = 0.24 EUR (Euro) 1 SAR = 0.20 GBP (British Pound) 1 SAR = 1.73 CNY (Chines Yuan) Server Server Waiting for the Cline to be Connected... CONECTION ESTABLISHED Received From Client : 10 SAR Received From Client: BYE Enter currency in SAR or BYE to EXIT: 10 Received from Server : 10 SAR = 2.6 USD (US Dollar) 10 SAR = 2.4 EUR (Euro) 10 SAR = 2.0 GBP (British Pound) 10 SAR = 17.3 CNY (Chines Yuan) Enter currency in SAR : BYE Received from Server: Thank You For Using My Program Client DISCONNECTEDCisco Router A Network with id: 192.168.0.0 and subnet mask 255.255.0.0 is given to you to split it in such a way that the following classrooms are given adequate number of IPs based on their needs. Each classroom will occupy its own subnet. The following information for each subnet must be included: Subnet ID CIDR Subnet Mask First IP usable in the subnet Last IP usable in the subnet Broadcast IP Address for the subnet Classroom1: 8 PCsClassroom2: 400PC and 4 PrinterClassroom 3: 2 PCsClassroom4: 62 PCs and a ServerClassroom5: 24PCs
- Task 2: Access Control Lists You will need to work out which interface on which router this needs to be applied to. Each ACL must work and be seen to work. Stop any IP address from 10.0.0.128 to 10.0.0.191 from pinging 123.123.123.123 - yet allow all other addresses Creating an ACL that meets the above 'selected' criteria Proving that a change of IP address, other than those allocated to the PC's also demonstrates the operation of the ACL. Also prove that you are still able to ping to 99.0.0.2 irrespective of device IP address19. An organization requires a range of IP addresses to assign one to each of its 1500 computers. The organization has approached an Internet Service Provider (ISP) for this task. The ISP uses CIDR and serves the requests from the available IP address space 202.61.0.0/17. The ISP wants to assign address space to the organization which will minimize the number of routing entries in the ISP's router using route aggregation. To calculate the address spaces are potential candidates from which the ISP can allow any one of the organizations?Given the following topology of a network, the router Node 3 connects the two subnets together: Nodes 1 and 2 are 'inside' of the subnet neta, Nodes 4 and 5 are 'outside' of neta and Node 3 with a firewall is the gateway of neta. The two networks have the prefix 192.168 as the first two octets in their IP addresses, e.g, Node 1 has IP address 192.168.1.11. eth1: 1.11 eth1: 2.21 1 2 eth1: 1.12 neta eth 1: 1.1 3 eth2: 2.1 netb 4 5 eth1: 2.22 (i) Suppose in the firewall on Node 3 the default policy is ACCEPT. Write packet filtering rules for the following goal. Suppose Node 5 hosts a web server supporting both HTTP and HTTPs. Set rules in Node 3 that prevents Node 2 from browsing any web pages at Node 5. Now change in Node3 the default policy as DROP and write packet filtering rules for the following goal. (ii) Allow all nodes in the subnet neta to browsing HTTP pages hosted at Node 5. (iii) Allow hosts in netb to SSH into Nodel.
- Suppose that an organization has taken a private class B network 172.16.0.0/16 and broken it up to multiple subnets using variable length subnet masks. If a host has IP address 172.16.40.10 and subnet mask of 255.255.240.0, The subnet to which the host belongs is in dotted decimal form. The broadcast address for this subnet in dotted decimal form is (Note: not 255.255.255.255). The number of of hosts can this subnet accommodate is (do not include reserved IP addresses). The first (lowest) IP address that can be assigned to a host in this subnet is in dotted decimal form. The last (highest) IP address that can be assigned to a host in this subnet is in dotted decimal form.Basic Subnetting - all subnets of EQUAL siaetets of EQUAL Q1: Given an IPV4 address 165.70.58.0/23, design and apply an IP addressing scheme for the topology shown in Figure 1. You must subnet to provide enough address space to use. Each LAN requires enough IP addresses to support at least 40 hosts. The point-to-point WAN links between two routers only require at least 2 host addresses. Complete the table below, Figure 1 Topology for Question Subnet # Subnet Address Address Range Broadcast Address Subnet Mask# of Wasted Host Network Prefix Addresses 1 3. 412 IKT204-G H21, IP and subnet Suppose an ISP owns the block of IPV4 addresses of the form 105. 16.80.0/23. Suppose it wants to create a total of five sub-nets (SN) from this block, by first dividing the address block into four sub-nets and then dividing the last sub-net into two so that the first three blocks have the same number of IP addresses and the last last two blocks have the same number of IP addresses. What are the prefixes (of the form a.b.c.d/x) for the five sub-nets in increasing order? SN1: 105. 16. SN2: 105. 16. SN3. 105 16. SN4: 105. 16. SN5. 105 16. How many bits constitutes the host portion of the prefixes created for SN1, SN2 and SN3? bits How many hosts may be assigned an IP address within SN4 and SN5? hosts