The presentation summarizes DNS, SMTP, and POP3 protocols. It discusses configuring a local host file to map IP addresses to hostnames, setting up a DNS server using Bind on Windows 7, and interacting with an email server using SMTP and POP3 commands via Telnet. The objectives are to resolve hostnames, configure DNS, and send emails between mailboxes on the email server. Requirements include networked PCs and servers running Windows 7 with TCP/IP and an email server configured with user mailboxes.

1. WELCOME TO OUR
PRESENTATION

2. PRESENTATION
ON
DNS,SMTP & POP3

3. WE ARE:
MD. SHAHJADA(CE-12026)
MD. MAHBUBUR RAHMAN(CE-12038)
OMIT PAL(CE-12045)
MD. OMAR FARUK SAZIB(CE-12047)

4. Objective:
1. Determine the local host address.
2. Ping to a host name.
3. Add IP addresses/using host name mapping to the host file.
4. Configure DNS service on windows 7 (Bind DNS server).
5. Use domain name service(DNS) to resolve hostnames into IP
addresses.
6. Interact with an Email server using SMTP and POP3 protocols
commands.

5. REQUIREMENTS:
1. Personal computer with Network Interface Cards connected through
category 5 UTP cables.
2. Windows 7 Network Operating System installed in each computer.
3. TCP/IP protocol installed in each computer.
4. Each computer should have an IP address 196.15.60.x where x is the
computer’s number.
5. Switches to connect all peer computers.
6. The lab server Bind Server (192.168.1.100) is configured as DNS server for
the domain name nwlab.edu with plenty of records.
7. Email server installed on Bind Server (192.168.1.100).
8. Mailboxes should be created on the Email server.

6. We will discuss all procedure part by
part……………
• First of all I am going to discuss about
Configuring and using host file.

7. What is hosts file?
The hosts file is a computer file used by an
operating system to map hostnames to IP
addresses. The hosts file is a plain text file,
and is conventionally named hosts.

8. To determine the local hostname:
Open command prompt.

10. To ping the local host name(name of this PC):

11. To ping the host name(name of other PC).
when the other PC is not connected to the LAN.

12. LAN configuration: open network and sharing
center.

16. To ping the host name(name of other PC).
when the other PC is connected to the LAN.

17. To add an entry to the host file.
the location of host file:

18. For edit host file:

23. Now I am going to discuss about :
• TCP/IP configuration.
• DHCP
• Access lookup table.
• DNS server test.

24. Configuring a DNS client for hostname/IP
resolution.
To ensure that the DNS server is correctly
installed and configured in server machine,
we should configure our own pc as its DNS
client.

25. Configuring TCP/IP manually :>
Open command prompt -> then wright “ ipconfig/all ”

26. What is DHCP ?
• Dynamic Host Configuration Protocol (DHCP)
is a client/server protocol
• DHCP provides an Internet Protocol (IP) host
with its IP address and other related.
• Also provides configuration information such
as the subnet mask and default gateway.

27. Why DHCP enabled/disabled ?
• Reliable IP address configuration.
• Reduced network administration.
o Centralized and automated TCP/IP configuration.
o The ability to define TCP/IP configurations
from a central location.
o The ability to assign a full range of additional
TCP/IP configuration values by means of DHCP
options.

28. Configuring TCP/IP manually :>

29.  Configuring TCP/IP
 In the Windows Control Panel, under "Network and Internet“ , select "View
network status and tasks“ :>

30.  Click "Change adapter settings“ :>

31.  Right-click your Internet connection's icon and select "Properties“ :>

32.  Select the "Internet Protocol Version 4 (TCP/IPv4)" item, and click the
"Properties" button:

33.  Select "Use the following IP addresses“ : >

34.  Insert the taken IP address and subnet mask from ipconfig :>

35.  Now we will see DHCP enabled condition in ipconfig in cmd :>

36. We can see that :
Before-> After->

37. Access the DNA server zone name
lookup table :
• At the command prompt->

38. Lookup table access :
• Also get the response of ?.

39. Lookup table access :
• Thus way we can access also :
o ls nwlab.edu
o ls –a nwlab.edu
o ls –d nwlab.edu

40. Test the DNS server using aliase:
• We can resolved the aliases when DNS server
installation and configuration is verified.

41. Install and Configure DNS Server
I am going to discuss about :
 Download BIND
 Create a new administrative account
 Install Bind DNS Server
 Configuration of BIND DNS Server

42. Downloading Bind
Go to https://www.isc.org/downloads/bind/

43. Create a new administrative user account
Go to Control panel

44. Create a new administrative user account
Go to Add or remove user accounts

45. Create a new administrative user account
Go to Create a new account

46. Create a new administrative user account
Click on Create Account

47. Create a new administrative user account
Click on new created account(named)

48. Create a new administrative user account
Click on Create a new password

49. Create a new administrative user account
Give a password re-type password and give a password hints

50. Create a new administrative user account
Finally a new administrative is created

51. Install BIND DNS Server
Unzip the downloaded zip file
Right click on BINDInstall.exe file
Click on Run as administrator

52. Install BIND DNS Server
Choose a directory where we have to install Bind
Give a service name(new created administrative user account name)
Give a password(user account password)
Make sure Automatic Startup is checked
Then click on install

53. Install BIND DNS Server
Bind installation Successful message

54. Configuration of BIND DNS Server
First go to the directory where we installed bind(C:Program Filesdns)
We have two folder named bin and etc
Go to etc and create a configuration file called named.conf
To create named.conf file first right click on blank space of etc folder
New New text document Change the file name as named.conf
Open the named.conf with any text editor

55. Configuration of BIND DNS Server
Write down the following code in named.conf

56. Configuration of BIND DNS Server
Write down the following code in db.nwlab.edu
Create a new file named db.nwlab.edu in C:Program Filesdnsetcmasterdb

57. Configuration of BIND DNS Server
To generate rndc.key open the cmd as administrator and type the following command
Copy the code to named.conf file

58. Configuration of BIND DNS Server
Controls
Type ipconfig all

59. Configuration of BIND DNS Server
Check the named.conf file

60. Configuration of BIND DNS Server
Start Bind service

61. Configuration of BIND DNS Server
Chance the Pc’s DNS server
Control panel Open Network and sharing center Change adapter setting

62. Configuration of BIND DNS Server
Check DNS Server is Configured successfully or not
1. Start the configured DNS server
2. Find port “953”
We can check another port by this command

63. Configuration of BIND DNS Server
Check Zone file is working or not
1. Type nslookup nwlab.edu

64. Configuration of BIND DNS Server
Check forwarders is working or not
1. Type nslookup www.mbstu.ac.bd

65. Finally, I am going to show the
procedure of sending message.
• We use SMTP and POP for sending and
receiving message.
• Telnet protocol for active port.

66. Telnet set up:
Telnet is a protocol that enables you to
connect to remote computers and local
computers over a TCP/IP network, over
TCP port 23. By default, Telnet is
disabled in recent Windows
environments.

67. Process of installation:
go to: Control Panel -> Programs ->
Turn Windows features on and off

68. User Account Control-> click Continue-
> Windows Features list-> Telnet Client-
> OK

70. Using Telnet on Windows with CMD:
1.Open a Command Prompt Window
2. Type "cmd" into the Search option
3.telnet stargate.terrassl.net 25

71. To check ping server:
1.Open a Command Prompt Window
2. Type "cmd" into the Search option
3. ping stargate.terrassl.net 25 the

72. How to sending message with command
prompt (cmd):
1. First open Notepad
2. Writing the following code
3. Then save as "Messenger.bat"
@echo off
:A
Cls
echo MESSENGER
set /p n=User:
set /p m=Message:
net send %n% %m%
Pause
Goto A

73. open the file, Messenger, it will open the
command prompt and show the following
text:
Messenger
User:
Then write the IP of the person I am trying
to reach.