Network Security - Spam Filter

Practice Labs Module
Time
1 hour
Difficulty
Intermediate

The "Spam Filter" module provides you with the instruction and computer hardware to develop your hands on skills in the defined topics. This module includes the following exercises: Configuring an Email Service, Configuring a Mail Client, Using Telnet to Spoof a Sender.

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Overview

Introduction

The Spam Filter module provides you with the instruction and computer hardware to develop your hands on skills in the defined topics. This module includes the following exercises:

  • Configuring an Email Service
  • Configuring a Mail Client
  • Using Telnet to Spoof a Sender

Exercise 1 - Configuring an Email Service

In this lab you will configure a mail server based on LAMP and then practice sending unsolicited commercial e-mail or junk e-mail via a Telnet prompt. You will enable an e-mail client using Windows Live Mail and find out how it’s basic junk e-mail feature filters out unwanted e-mail from reaching its inbox . To better understand this technology, refer to your course materials.

In Ubuntu you can use a package called postfix to implement SMTP email transfer (a Mail Transfer Agent [MTA]) and dovecot to implement POP or IMAP mailbox access (a Mail Delivery Agent [MDA]).

Exercise 2 - Configuring a Mail Client

The next step is to configure a client mail program to test that the mail service in LAMP server is working.

Exercise 3 - Using Telnet to Spoof a Sender

Running an SMTP service without authenticating connecting users or computers is not a good idea. You can easily use a Telnet session to spoof the sender's email address.

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