Different Types of Firewalls

Companies such as Cisco and other major vendors have introduced a multitude of firewall products that are capable of monitoring traffic using different techniques. Some of today's firewalls can inspect data packets up to Layer 4 (TCP layer). Others can inspect all layers (including the higher layers) and are referred to as deep packet firewalls. This section defines and explains these firewalls. 

The three types of inspection methodologies are as follows:

• Packet Filtering and Stateless Filtering.
• Stateful Filtering.
• Deep Packet Layer Inspection.

JNCIE: Juniper Networks Certified Internet Expert Study Guide

JNCIE: Juniper Networks Certified Internet Expert Study Guide 

Publisher: Sybex | ISBN: 0782140696 | edition 2003 | PDF | 1008 pages | 4,74 mb

Turn to this Official Study Guide from Sybex for the most extensive preparation available for Juniper Networks' highest level of certification: JNCIE (Juniper Networks Certified Internet Expert)! At the top of a four-tiered certification program, the JNCIE is an advanced, hands-on, lab-based certification. Published in partnership with the Juniper Networks Technical Certification Program, and written by the lead developer of the exam, this official Study Guide provides in-depth coverage of all exam objectives along with practical insights drawn from real-world experience. The accompanying CD includes the entire book in searchable PDF as well as complete router configurations for case studies used throughout the book .

JNCIP: Juniper Networks Certified Internet Professional Study Guide

JNCIP: Juniper Networks Certified Internet Professional Study Guide 

 
Sybex | February-18-2003 | ISBN: 0782140734 | 752 pages| File type: PDF | 3.7mb

Get ready for the challenging JNCIP certification hands-on lab exam from Juniper Networks with the Official Study Guide from Sybex! Juniper Networks develops high-speed, scalable routers for the service provider and networking industry. They are challenging Cisco in the internetworking market with state of the art technology and innovation.

JNCIA: Juniper Networks Certified Internet Associate Study Guide

JNCIA: Juniper Networks Certified Internet Associate Study Guide

Sybex | ISBN: 0782140718 | 640 pages | February 3, 2003 | CHM | 10 Mb

Here's the book you need to prepare for the JNCIA exam, JN0-201, from Juniper Networks. Written by a team of Juniper Network trainers and engineers, this Study Guide provides:

* Assessment testing to focus and direct your studies
* In-depth coverage of official test objectives
* Hundreds of challenging practice questions, in the book