Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter...
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Transcript of Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter...
![Page 1: Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter Renström.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649efd5503460f94c10f60/html5/thumbnails/1.jpg)
FirewallsFirewalls
Nicklas NordenmarkFabian AleniusPeter Renström
Nicklas NordenmarkFabian AleniusPeter Renström
![Page 2: Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter Renström.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649efd5503460f94c10f60/html5/thumbnails/2.jpg)
Basic
•Software or dedicated device
•Using a set of rules
•Traffic flow between networks
•Local network -> Internet
![Page 3: Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter Renström.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649efd5503460f94c10f60/html5/thumbnails/3.jpg)
History
•The term “firewall”
•Late 1980s
•Clifford Stoll vs Markus Hess
![Page 4: Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter Renström.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649efd5503460f94c10f60/html5/thumbnails/4.jpg)
Traditional Packet Filter
•First generation firewall
•Network Layer Attack
•IP Spoofing
•Smurf Attack
•Stacheldraht DDoS agent
![Page 5: Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter Renström.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649efd5503460f94c10f60/html5/thumbnails/5.jpg)
Stateful Firewall
•Second generation firewall
•Keeps track of current connections
•Transport Layer Attack Definitions
•Connection resource exhaustion
•Header abuses
•Port Scan / Mapping
![Page 6: Firewalls Nicklas Nordenmark Fabian Alenius Peter Renström Nicklas Nordenmark Fabian Alenius Peter Renström.](https://reader030.fdocuments.in/reader030/viewer/2022032806/56649efd5503460f94c10f60/html5/thumbnails/6.jpg)
Application Layer Firewall
•Third generation firewall
•Many attacks on the application layer
•Inspect data
•SQL Injection
•Phishing
•Problems with encryption