Information Security & Assurance By Curtis Pethley
Selecting a Firewall
Security vs. Performance
Best for Small/Medium Businesses
Small/Medium Business Firewalls
FortiGate-110C/111C
Juniper IDP75
SonicWALL NSA 220
Pros & Cons of Small/Medium Firewalls
Small Business Decision
Medium Business Decision
Best for Large Businesses
Large Enterprise (UTM) Firewalls
Checkpoint 61000
Cisco ASA 5580-40 Firewall
Juniper SRX5800
Pros & Cons of UTM Firewalls
Pros & Cons of UTM Firewalls – cont’d
Large Business Decision
Summary
Any Questions???

Pros & Cons of Small/Medium Firewalls
PROS
Affordable and easy to install
All 3 of these are Stateful firewalls, adaptive and better at identifying unauthorized and forged communications then Stateless
Packet filtering firewalls is their low cost and low impact on network performance
CONS
They do not protect against back door attacks – Juniper IDP75 does offer this protection
Slow under heavy traffic load (low throughput), since all connections must go through the firewall system
Firewalls do not provide data integrity, nor data confidentiality
No IDS, so vulnerable to inside attackers – Juniper IDP75 does offer this protection