Solution

• A firewall is a device which is used to control the flow of traffic into and out-of network. In other words, it is a security device which installed between two networks, internal network to outside network (more often the internet).

• Based on the rule define in the firewall data …

"Firewall protects internal network from the external network".

• It acts as a shield to protect your system from the untrusted, non-reliable systems connected to the internet.

• In technical terms firewall is a piece of software hardware or both that allows only selected packet to pass from the internet to your …

Solution

• Some security bugs can’t be identified without sending a payload that exploits a suspected vulnerability.

• These types of probes are more accurate they rely on direct observation as opposed to inferring problems based on port numbers or service banners. But they also carry more risk of interrupting the service, …