Suppose remote host A wishes to use a TCP-based VPN connection to connect to host B,...
Suppose remote host A wishes to use a TCP-based VPN connection to connect to host B, with IP address 200.0.0.7. However, the VPN software is not available for host A. Host A is, however, able to run that software on a virtual machine V hosted by A; A and V have respective IP addresses 10.0.0.1 and 10.0.0.2 on the virtual network connecting them. V reaches the outside world through network address translation (7.7 Network Address Translation), with A acting as V’s NAT router. When V runs the VPN software, it forwards packets addressed to B the usual way, through A using NAT. Traffic to any other destination it encapsulates over the VPN.
Can A configure its IP forwarding table so that it can make use of the VPN? If not, why not? If so, how? (If you prefer, you may assume V is a physical host connecting to a second interface on A; A still acts as V’s NAT router.)
Homework Answers
from the given data of information
A configuration instance for building an IPsec vpn tunnel between 2 units of TD- W8960N /TD- W8950ND/ TD- W8968(V3). IF we have only 1 unit and you want to setup a client to site vpn connection
this FAQ is not available for you and the TD- W8950ND/ TD- W8960N/ TD- W8968(V3) has no such function to meet your need they cant work as a vpn server.
ip sec tunnel is usually built to connect 2 or more remote LANS through internet so hosts in different remote LANS are ableto communicate with each other as if they are all in the same lan
IPsec configuration page
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Suppose remote host A wishes to use a TCP-based VPN connection
to connect to host B,...
Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered through...
Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered through 3, and packets are to be forwarded to the link interfaces as follows. Destination Address Range Link Interface 0 11101111010000000000000000000000 through 11101111111111111111111111111111 1 11101111010110000000000000000000 through 11101111010010011111111111111111 11101001 111110000000000000000000 through 11101001 111111111111111111111111 2 otherwise 3 a) Provide a forwarding table that has 4 entries, uses longest prefix matching, and forwards packets to the correct link interfaces. (4 pts) b) Describe how your forwarding table determines...
Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0...
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a) b) c) This chapter ("data plane") is all about forwarding packets at a router. Check...
a)
b)
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Carl has created a virtual machine on the cloud service provider that his company uses and...
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Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered through 3, and packets are to be forwarded to the link interfaces as follows. Destination Address Range Link Interface 0 11101111010000000000000000000000 through 11101111111111111111111111111111 1 11101111010110000000000000000000 through 11101111010010011111111111111111 11101001 111110000000000000000000 through 11101001 111111111111111111111111 2 otherwise 3 a) Provide a forwarding table that has 4 entries, uses longest prefix matching, and forwards packets to the correct link interfaces. (4 pts) b) Describe how your forwarding table determines...
Consider a datagram network using 32-bit host addresses. Suppose a router has four links, numbered 0 through 3, and packets are to be forwarded to the link interfaces as follows: Destination Address Range Link Interface 11100000 00000000 00000000 00000000 through 11100000 00111111 11111111 11111111 11100000 01000000 00000000 00000000 through 11100000 01000000 11111111 11111111 11100000 01000001 00000000 00000000 through 11100001 01111111 11111111 11111111 otherwise a. Provide a forwarding table that has five entries, uses longest prefix matching, and forwards packets to...
a)
b)
c)
This chapter ("data plane") is all about forwarding packets at a router. Check all the statements that apply to Forwarding: Forwarding tables are computed by the control plane, in software. Forwarding tables are typically stored at every input port of a router. Forwarding tables are typically stored at every output port of a router. Forwarding tables are stored in the switching fabric. Destination-based forwarding means that we use the destination address of an IP datagram, to look...
Q1 Error detection/correction Can these schemes correct bit errors: Internet checksums, two-dimendional parity, cyclic redundancy check (CRC) A. Yes, No, No B. No, Yes, Yes c. No, Yes, No D. No, No, Yes E. Ho, hum, ha Q2 CRC vs Internet checksums Which of these is not true? A. CRC's are commonly used at the link layer B. CRC's can detect any bit error of up to r bits with an r-bit EDC. c. CRC's are more resilient to bursty...
Consider the topology shown below with following requirements Three subnets A, B, C, should have enough addresses, starting from 192.100.10.0 to support 500 interfaces, 200 interfaces, and 100 interfaces, respectively. Each of subnets, D, E, and F has 32 interfaces. (not required for address assignment.) The IP addresses for three subnets should be assigned continuously, with spacing of power-2, that means, 250 will be rounded to 256, and so on. For each subnet, the assignment should take the form a.b.c.d/x...
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