1. UNIVERSITY OF ABOMEY-CALAVI
-o-o-o-o-o-o-o-o-
ABOMEY-CALAVI POLYTECHNIC
-o-o-o-o-o-o-o-
COMPUTER SCIENCE AND TELECOMMUNICATIONS
DEPARTEMENT
OPTION: NETWORKS AND TELECOMMUNICATIONS 5
-o-o-o-
Discipline: ENGLISH
Network Basic Security
Presented by: Under the baton of:
RADJI Mohamed Mr Bienvenu OLORY
RADJI Mohamed
01/01/2013 1
4. NETWORKING THREATS (1)
INTRODUCTION
Hackers are intruders who gain access to a
network through the carelessness of network
1. NETWORKING
THREATS
users.
Attacks can come from both internal and
external sources. Internal attacks account for
2. METHODS OF
ATTACK 70% of security incidents.
Social engineering is a group of techniques
used to deceive internal users into performing
3. SECURITY POLICY
specific actions or revealing confidential
information.
4. USING FIREWALLS
Three types of social engineering attacks are:
pretexting, phishing and vishing.
CONCLUSION
Network Basic Security RADJI Mohamed
01/01/2013 4
6. METHODS OF ATTACK
INTRODUCTION
Viruses are programs that once activated
1. NETWORKING
spread by modifying other programs or files,
THREATS causing damage to files, or erasing them
completely.
2. METHODS OF A worm is similar to a virus except it runs
ATTACK
independently and spreads by resending itself
an e-mail attachement or part of a network
3. SECURITY POLICY
message.
A Trojan horse is a program that appears
legitimate. Once initiated, it can damage a
4. USING FIREWALLS hard drive or create a back door into a system
allowing hackers to gain access.
CONCLUSION
Network Basic Securityccbb RADJI Mohamed
01/01/2013 6
7. SECURITY POLICY (1)
INTRODUCTION
A security policy should include identification
1. NETWORKING
and authentication policies, password policies,
THREATS acceptable use policies, remote access policies,
and incident handling procedures.
2. METHODS OF
ATTACK
All users of network must support and follow
the security policy in order for it to be effective.
3. SECURITY POLICY
Keep software applications up-to-date with the
latest security patches and updates to help deter
threats.
4. USING FIREWALLS
CONCLUSION
Network Basic Security RADJI Mohamed
01/01/2013 7
8. SECURITY POLICY (2)
INTRODUCTION
Antivirus software, installed on every computer,
1. NETWORKING
THREATS
detects and removes known viruses, worms and
Trojan horses.
2. METHODS OF Anti-spam software identifies spam and places it
ATTACK
into a junk folder or deletes it.
Tools and applications used in securing a
3. SECURITY POLICY
network include: Software patches and updates –
Virus protection – Spyware protection – Spam
4. USING FIREWALLS blockers – Pop-up blockers – Firewalls.
CONCLUSION
Network Basic Security RADJI Mohamed
01/01/2013 8
9. USING FIREWALLS (1)
INTRODUCTION
1. NETWORKING
THREATS
2. METHODS OF
ATTACK Packet Filtering –controls access based on IP or
MAC addresses.
3. SECURITY POLICY
Application/web Site Filtering controls access
based on the application.
Statefull Packet Inspection (ISP) ensures
4. USING FIREWALLS
incoming packets are legitimate responses to
requests from internal hosts. SPI can recognize
CONCLUSION and filter out attacks such as DoS.
Network Basic Security RADJI Mohamed
01/01/2013 9
10. USING FIREWALLS (2)
INTRODUCTION
1. NETWORKING
A DMZ is an area of the network that is
THREATS accessible to both internal and external users.
If the wireless access point is unsecured, anyone
2. METHODS OF
ATTACK who connects to it is considered part of the
internal network and is on the protected side of
3. SECURITY POLICY
the firewall.
4. USING FIREWALLS
CONCLUSION
Network Basic Securityc RADJI Mohamed
01/01/2013 10
12. INTRODUCTION
THANK YOU FOR YOUR KIND
1. NETWORKING
THREATS ATTENTION.
2. METHODS OF
ATTACK
3. SECURITY POLICY YOUR QUESTIONS AND
SUGGESTIONS ARE WELCOME.
4. USING FIREWALLS
CONCLUSION
Network Basic Security RADJI Mohamed
01/01/2013 12
