firewall

Slide 1: 

FIREWALL

My Presentation Includes:-: 

My Presentation Includes:- What is firewall Need of firewall What Does Firewall Can Firewall Techniques Market need of firewall Ways to steal the data

Slide 3: 

Clip shows firewall working Types of firewall Conclusions

What is Firewall????: 

What is Firewall???? Device that provide secure connectivity between the networks i.e. either internal or external. Used to implement and enforce a security policy for communication between the networks.

Diagrammatically :-: 

Diagrammatically :-

Need Of Firewall :-: 

Need Of Firewall :- Most corporations have their valuable data on their networks. Leaking this information to the competitors can be a great setback. Apart from leaking the information out, there is a great danger of entering virus and worms in the corporate network.

Diagrammatically :- : 

Diagrammatically :-

Diagrammatically :-: 

Diagrammatically :-

What Does Firewall Can???: 

What Does Firewall Can??? Restrict invalid packets. Restrict outgoing traffics by I.P. address, Ports and Users. Block invalid Users.

Firewall Techniques :-: 

Firewall Techniques :- Packet Filter Application Gateway Circuit Level Gateway Proxy Server

Packet Filter :-: 

Packet Filter :- Packet filtering inspects each packet passing through the network. It accepts or rejects it based on user-defined rules. Although difficult to configure, it is fairly effective and mostly transparent to its users. It is susceptible to IP spoofing.

Application Gateway :-: 

Application Gateway :- Applies security mechanisms to specific applications, such as FTP and Telnet servers. This is very effective, but can impose a performance degradation.

Circuit Level Gateway :- : 

Circuit Level Gateway :- Applies security mechanisms when a TCP or UDP connection is established. Once the connection has been made, packets can flow between the hosts without further checking.

Proxy Server :-: 

Proxy Server :- Intercepts all messages entering and leaving the network. A proxy device (running either on dedicated hardware or as software on a general-purpose machine) may act as a firewall by responding to input packets (connection requests, for example) in the manner of an application, whilst blocking other packets. The proxy server effectively hides the true network addresses.

Market Need of Firewall :-: 

Market Need of Firewall :-

3 Ways To Steal the Data:-: 

3 Ways To Steal the Data:-

(2) File Transfer Protocol :-: 

(2) File Transfer Protocol :-

Network Neighbourhood Drag And Drop :-: 

Network Neighbourhood Drag And Drop :-

Clip Shows Firewall Working:-: 

Clip Shows Firewall Working:-

Types Of Firewall :-: 

Types Of Firewall :- Hardware firewall Software firewall

Hardware firewall :-: 

Hardware firewall :- Placed in perimeter of network. Employs Technique of packet filtering Reads header file to know the source and destination address. The information is then compared with the set of predefined or user created rules to determine whether the packet is forwarded or dropped.

Types of Hardware Firewall:-: 

Types of Hardware Firewall:- Netgear firewall Checkpoint firewall Nortel switched firewall Personal firewall hardware -Linksys -Cisco’s PIX

Netgear firewall :-: 

Netgear firewall :- Internet sharing broadband router and 4 port switch. 2x the speed and 4x times the coverage of a wireless-g router. Configurable for private networks and public hotspot Touch less Wi-Fi security makes it easy to secure your network.

Screenshots of Netgear Firewall:-: 

Screenshots of Netgear Firewall:-

Checkpoint Firewall:-: 

Checkpoint Firewall:- It protects entire network infrastructure. Protects for GPRS network Auditing and tracking GPRS networks.

Nortel switched firewall:-: 

Nortel switched firewall:- The key component of nortel’s layered defence strategy is nortel switched firewall. Potects IT data centers, service provider networks and hosting infrastructures

Personal Firewall Hardware : Linksys: 

Personal Firewall Hardware : Linksys Linksys scans the data travelling in the peer to peer network It also known as Ethernet cable/DSL firewall router. The integrated SPI firewall Blocks the incoming or outgoing traffic

Cisco PIX :-: 

Cisco PIX :- Cisco supports simple network management protocol (SNMP) traps. It filters the java applets which is a threat to the corporate resources. Strong firewall security and proxy authentication functions with NAT and PAT features

Software firewall :-: 

Software firewall :- Software firewall is similar to a filter. It sits between the normal application and the networking components of the operating system. Software firewall implants itself in the key area of the application/network path. It analysis what is going against the rule set

Types of Software Firewall:-: 

Types of Software Firewall:- Windows Firewall Linux Firewall Mac OS X Firewalls

Windows Firewall :-: 

Windows Firewall :- Norton Personal Firewall Mcafee Personal Firewall Systematic Enterprise Firewall Kerio WinRoute Firewall Sunbelt Personal Firewall Injoy Firewall

Norton Personal Firewall:-: 

Norton Personal Firewall:- It automatically blocks intruders and thieves. Hides computer from hackers. Automatically detects viruses Advanced phishing protection

Mcafee Personal Firewall: 

Mcafee Personal Firewall Block spyware Improves pc performance Backup and restore files Protects online identity

Systematic Enterprise Firewall:-: 

Systematic Enterprise Firewall:- Supports Advanced Encryption Standard(AES) Supports URL filtering technology Support integrated load balancing

Kerio WinRoute Firewall:-: 

Kerio WinRoute Firewall:- Anti virus gateway protection. Content filtering User specific access management Fast internet sharin

Sunbelt Personal Firewall:-: 

Sunbelt Personal Firewall:- Controls traffic on the network Create separate log for firewall modules Automatically update newer version of the software

InJoy Firewall :-: 

InJoy Firewall :- Deep packet inspection Unique multi platform support Dynamic firewall rules Access control packet filtering

Linux Firewalls :-: 

Linux Firewalls :- KMy firewall Firestarter Guarddog Firewall Builder

KMy Firewall :-: 

KMy Firewall :- It attempts to make it easier to setup IP tables based firewalls on linux system Ability to save entire rule sets Only have to configure your rule sets one time, than you can use it on several computers

Firestarter :-: 

Firestarter :- Open source visual firewall program Options of whitelist and blacklist traffic It shows intrusion attempts as they happen

Guarddog :-: 

Guarddog :- Supports router configuration Scripts can be imported or exported to be used on machines other than current one Hosts/networks divides into zones

Firewall Builder :-: 

Firewall Builder :- It is multi platform firewall configuration and management tools It currently supports ip tables, ip filters. It can generate configuration file for any supported target firewall platform.

Mac OS X Firewalls :-: 

Mac OS X Firewalls :- Flying Buttress DoorStop X Firewall Intego NetBarrie X5 Little snitch

Flying Buttress :-: 

Flying Buttress :- Includes qualifiers on host or network address Operates on protocol other than TCP or UDP Ability to switch between different firewall

DoorStop X Firewall :-: 

DoorStop X Firewall :- All TCP services are protected by default Ability to tune protection on service by service and address by address basis Four protection modes:- Deny all, Allow all, Allow by address and deny by address

Intego NetBarrier X5: 

Intego NetBarrier X5 Personal Firewall Privacy protection Monitoring It has 4 lines of defence to protect your mac and data from intrusions and attacks

Little Snitch :-: 

Little Snitch :- Provide flexible configuration options Introduce new network monitor that shows the details of incoming and outgoing traffic Allows to intercept unwanted connection attempts

Conclusions:-: 

Conclusions:- Firewall is the program which is placed at the networks gateway server. It protects the data from unauthorized users. There are different techniques of firewall like Packet Filter, Application Gateway, Circuit Level Gateway, Proxy Server.

Slide 49: 

Two types of firewall exists :-hardware firewall and software firewall.

Slide 50: 

THANK YOU

Slide 51: 

ANY QUERIES