Using an Intranet
Within a Company
4. Classification of firewall
When offices build a computer network in a limited
range, intranet is a network built using standard
technology of Internet.
The good point of the intranet is a cost cut and the
selectivity of function.
Adversely, a bad point is that many people can know
the secret matter.
The meaning of subcontractor is "Someone who
enters into a subcontract with the primary
Perhaps I think that I show the Internet with this
The firewall is a system that prevents it from
the computer network of the organization from the
Or, it is a computer which such a system was built
Classification of firewall
The firewall is classified in detail depending on the
operating protocol hierarchy.
- Packet filter type
- Circuit level gateway type
- Application gateway type
Packet filter type has three type:Static packet filter,
Dynamic packet filter,and Stateful packet inspection.