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Brief History of Check Point Firewalls

At the beginning of things

The idea of filtering traffic between different networks is as old as routing itself.  Most routers are capable of enforcing so-called “access lists” to define basic inter-network communication restrictions.

The first paper describing network packet filtering was published by Digital Equipment Corporation (DEC) in 1988.  In 1992 DEC presented the very first commercial firewall: DEC SEAL.  Early firewalls such as SEAL checked network addresses and sometimes the port numbers of a packet to determine whether that packet could be forwarded or should be discarded.  This type of inspection is called Static Packet Filtering (SPF).

 

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Figure 1: Static Filtering Enforcement - OSI Model

 

As shown on the diagram above, SPF acts on Layers 3 and 4 of OSI Networking Model.  Its security decision is based on IP addresses and in some cases ports of IP packets.

 

Although packet filtering’s logic is very simple, is has a fundamental

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6 Comments
SabujKumarRoy
Explorer

A very good article to know about the history of Checkpoint! Thank you.

_Val_
Admin
Admin

thanks @SabujKumarRoy 

Jerry
Leader
Leader

excellent documentary, brings memories indeed ... 🙂 

Vincent_Bacher
Advisor

yes, memories...... 3.0 on HP-UX......long ago.....

amitjpatil08
Explorer

Very Informative...Thank you!!!

EdenC
Explorer

A wonderful story for someone new to the technology like me to read. Great article!