Firewall is nothing but a security device which is configured in such a way to permit, proxy data through a network.
1. First generation:
It is also called as the Packet Filters. It is a highly technical internet security device. This type of firewall inspects the packets during the data transfer between the computers on the internet. Only if the packet matches the rules of the filter the packet will be transferred or otherwise it will discard the packet with an error message.
2. Second Generation:
It is also called as the Stateful Filter. This type of Filter thoroughly checks all the contents of each packet individually and it maintains the records for all the connections through the firewall. This type of filter will determine whether the packet is a new connection or a part of an existing one.
3. Third Generation:
It is otherwise called as the Proxy filters. This type of filter is an application layer filtering and one of the advantages is that this will identify certain protocols and applications and it will discard the unwanted protocols being transferred through.
1. First generation:
It is also called as the Packet Filters. It is a highly technical internet security device. This type of firewall inspects the packets during the data transfer between the computers on the internet. Only if the packet matches the rules of the filter the packet will be transferred or otherwise it will discard the packet with an error message.
2. Second Generation:
It is also called as the Stateful Filter. This type of Filter thoroughly checks all the contents of each packet individually and it maintains the records for all the connections through the firewall. This type of filter will determine whether the packet is a new connection or a part of an existing one.
3. Third Generation:
It is otherwise called as the Proxy filters. This type of filter is an application layer filtering and one of the advantages is that this will identify certain protocols and applications and it will discard the unwanted protocols being transferred through.
No comments:
Post a Comment