Firewall Types

Firewall

Control Traffic/Content between points

• Protection against evil

Network Based Firewall

Filter traffic by port # or app

• OSI Layer 4 (TCP/UDP)

• OSI Layer 7 (Application)

Encrypt Traffic

NAT

UTM / All in one security appliances

Consolidates multi security functions into single device/platform

• Web security Gateway

(ONLY WORKS ON LAYER 4 PORT #’s)

Handles Following Features:

• URL Filter

• Malware Inspection

• Spam Filter

• IDS/IPS

  • VPN

NGFW

Analyze every packet & categorizes it before security decision is made

• NGFW Names

  • Application Layer Gateway

  • Stateful multilayer inspection

  • Deep packet inspection

• Has own IPS

Content Filtering

Web Application Firewall (WAF)

• Analyze input in web based application

  • Allows / Disallows based on input

• Can identify SQL Injection