Network Address Translation. Consider the following scenario in which host 10.0.0.1 is communicating with an external web server at IP address128.119.40.186. The NAT table shows the table entry associated with this TCP flow. What are the source and destination IP address and port numbers at pointA?HFS:D:NAT translation tableWAN side addr138.76.29.7, 5051138.76.29.710-The source IP address is:The destination IP address is:The source port number is:The destination port number is:LAN side addr10.0.0.1, 2020110.0.0.4D:S:D:A10.0.0.110.0.0.210.0.0.310.0.0.1[Choose ][Choose ][Choose ]

1. Host 10.0.0.1 is communicating with the external web server (referenced in the question ), so…

Answered: The source IP address is: The…

The source IP address is: The destination IP address is: The source port number is: The destination port number is: 10.0.0.1 [Choose ] [Choose ] [Choose ] <

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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5. A terminal is connected to a BOB with connections as shown below. The terminal is configured with the following settings. Router Properties ?X ASCII Setup Connect To Settings ASCII Sending I Send line ends with line feeds V Echo typed characters locally Line delay: 5 Function, arow, and ctri keys act as * Teminal keys C Windows keys milliseconds. Backspace key sends O Cri+H C Del C Ctrl+H, Space, Ctrl+H Character delay: 2 milliseconds. Emulation: ASCII Receiving VT100 Teminal Setup. Colors. I Append line feeds to incoming line ends I Force incoming data to 7-bit ASCII V Wrap lines that exceed teminal width Telnet teminal ID: VT100 Backscroll buffer lines: 500 E Play sound when connecting or disconnecting I Exit program upon disconnecting OK Cancel ASCII Setup. OK Cancel Describe exactly what you see when you type keys on the keyboard of the terminal. [1] TD RD BOB
Given the IP address 180.15.128.0/20. Now, using the given IP address space create five subnets in such a way so that less number of IP address is wasted for each subnet and the subnets will have the following number of hosts SubnetA - 23 hostsSubnetB - 50 hostsSubnetC - 2 hostsSubnetD - 6 hostsSubnetE - 10 hostsNow find out the following for each subnet: a) Network ID b) Broadcast address c) First usable IP address d) Last usable IP address e) Subnet mask Here, while solving the question make sure you are saving IP addresses. For example, SubnetA needs 23 hosts so in SubnetA you can allocate maximum 30 hosts. Follow the table for all the allowed number of hosts and required number of host bits for each subnet: Name of Subnet Maximum number hosts you can allocate Length of Host bits in the IP address cannot exceed SubnetA 30 5-bits SubnetB 62 6-bits SubnetC 2 2-bits SubnetD 6…
An organization is granted the block (180.50.100.0 /19). This block is divided as follows: SPI SP2 Sub-provider Subnet SP3 A B C D E F G Number of hosts/subnet 500 200 100 512 200 80 16 Find the range of hosts IP addresses allocated for each sub-provider using i- Fixed length subnetting. ii-Variable length subnetting.
Your host has IP address 172.16.1.1. Someone tries to send e-mail from a remote host with IP address 192.168.3.4. If successful, this will generate an SMTP dialogue, consisting of SMTP commands and mail, between the remote user and the SMTP server on your host. Assume that a user on your host tries to send packets for this scenario as shown: Scenario Direction Src Addr Dest Addr Protocol Dest Port Action 1 In 192.168.3.4 172.16.1.1 TCP 25 ? 2 Out 172.16.1.1 192.168.3.4 TCP 1234 ? Rule table: Rule Direction Src Addr Dest Addr Protocol Dest Port Action A In External Internal TCP 25 Permit B Out Internal External TCP > 1023 Permit C Out Internal External TCP 25 Permit D In External Internal TCP > 1023 Permit E Either Any Any Any Any Deny Indicate which packets are permitted or denied, and which rule is used in each case.
Look at the Snort Rule shown below: alert tcp any any -> any 80 (msg:"LOCAL PHP error redirect"; content:"login.php?error="; sid:1000100; rev:1;) Which packets from the list given below would the above Snort rule trigger as intrusions? There are multiple answers, and select all that answers the question. O 64.312.1.2:4236 -> 204.126.133.9:80 POST /php2-1-10/login.php? error=http://15.2.4.6 O 64.312.1.2:4317 -> 204.126.133.22:80 GET /phpadmin/setup.php O 64.312.1.2:1437 -> 204.126.133.7:80 GET /phpadmin/setup.php? error=http://15.2.4.6 O 64.312.1.2:4315 -> 204.126.133.22:80 GET /phpadmin/login.php? error=http://15.2.4.6 O 64.312.1.2:4237 -> 204.126.133.19:80 GET /admin/errors/login.php
Find the first address, last address and the number of addresses of a network whose one of the IP addresses is 12.28.22.12 / 25. Please Solve it briefly with one by one steps
A route must be distributed using an EIGRP parameter, correct? Exit interface and IP address of the following hop are two examples of variables that might alter the administrative distance.
Fa " 2901010 Second usable address Second usable address Second usable address Second usable address Server FTP SMARTPHONE T P SMARTHOMET PC F SMARTPHONEFT The network address 172.30.10.0/24 is given. You need to design the IP plan for the above network topology using VLSM based on the following information: • VLAN 10 (students) is having 120 users. • VLAN 20 (staff) is having 60 users. • VLAN 30 (guests) is having 55 users. . .WAN has 2 users. Redraw the below tables to fill in the subnetted addresses. VLAN 10 (STUDENTS) Subnet address First usable address Subnet mask VLAN 20 (STAFF) Subnet address First usable address Subnet mask VLAN 30 (GUEST) Subnet address First usable address Subnet mask WAN Subnet address First usable address Subnet mask
Suppose you have been given this classful IP address 110.24.33.34. You want to create a network of 1024 (assignable) IP addresses, what will be the length of network and host part?Write down the subnet mask for this IP addressWrite down the Network ID for this network along with prefix lengthWrite down the broadcast IP address in this networkHow many additional (extra) IP addresses do you have in this network? (Whereas the requirement is 1024 IP addresses as mentioned above)
Please written by computer source Write a Snort rule to detect a connection attempt on the telnet server which has an IP address 192.168.32.129 and generate alerts for packets with content ‘Telnet!’ directed to the server.
Server Host A SYN Seq 0 SYN JACK Seq=0, ACK=1 ACK Seq, ACK Seq=? ACK=? 170 bytes Get Req Seq and ACK values are: a. Seq=1, ACK=0 b. None is true. c. Seq=0, ACK=1 d. Seq=0, ACK=0 e. Беq-1, ACK-1 С.
0. AS1 has the following routing table, draw the network of AS’s that these paths imply: prefix path P1 AS2 P2 AS4 AS5 AS3 P1 AS4 AS2 P2 AS5 AS3 P1 AS5 AS2 Assuming AS 1 accepted all the paths advertised to it, what paths does AS4 advertise to AS1? What AS is P1 in? What about P2? AS5 no longer wants to forward packets destined for prefix P1 on behalf of AS1, but it is ok forwarding prefix P2, how would it change the paths it advertises to AS1? If AS1 sends a packet to AS4 destined for P1, what path will it take? How do we know AS4 won’t forward it back to AS1? If AS1 gets the following advertisement from AS4, P1 AS4 AS1 AS2 how would it update its table? Why? NOTE: I would appreciate it if the solutions of the paths were hand-drawn so I can visualize it better.