Differences between Stateful and stateless firewall

yasir shaikh — Tue, 12 Mar 2019 07:28:33 GMT

Differences between Stateful and stateless firewall..? which method is bettre and why..??

Hi Yasir,

Aditya Ganjoo — Sat, 12 Mar 2016 06:59:36 GMT

Hi Yasir,

Stateless firewalls (eg a l3 router )handle network traffic, and restrict or block packets based on source and destination addresses or other static values. They are not ‘aware’ of traffic patterns or data flows.

Stateful firewalls (eg ASA) maintains the state of the connection and 5 tuples for a particular flow: such as

Source IP address
Source port (typically: any)
Destination IP address
Destination port (80 or 443)
Destination protocol (typically TCP)

If you want the device to be acting as a true firewall then stateful is any day better as it tracks the connection till layer 4 but it comes with an overhead as compared to stateless FW.

Regards,

Aditya

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topic Hi Yasir, in Network Security

Differences between Stateful and stateless firewall

Hi Yasir,