Hence, ethical hacking finds its uses in the following five categories: In short, any place from which data can be secured for ill-intended use can be hacked. Hacking can be done on any operating system and server. In a way, ethical hacking is a preemptive measure to prevent thefts and loss of data due to blackhat hacking. This way, the security of the system can be strengthened. The job requires the cyber security expert or the ethical hacker to hack into a system and point out the flaws in the firewall.

Security measures as outlined above can help protect the network against sniffing.While the term itself seems like a paradox, ethical hacking has been around for quite some time.

This makes the switch to operate like a HUB

MAC flooding works by flooding the MAC table address list with fake MAC addresses.

Active sniffing is done on a network that uses a switch.

Passive sniffing is done on a network that uses a hub.

Network sniffing is intercepting packages as they are transmitted over the network.

Changing the network to a Secure Shell (SSH) network also reduces the chances of the network been sniffed.

Encrypting messages as they are transmitted over the network greatly reduces their value as they are difficult to decrypt.

Restriction to network physical media highly reduces the chances of a network sniffer been installed.

Authentication, Authorization and Accounting servers can be used to filter discovered MAC addresses.

It can also be used to maintain a secure MAC address table in addition to the one provided by the switch. This feature can be used to limit the number of MAC addresses on the ports.

Some switches have the port security feature.

This makes it possible to sniff data packets as they sent on the network.

Once the switch has been compromised, it sends the broadcast messages to all computers on a network. This leads to overloading the switch memory and makes it act as a hub. MAC flooding is a network sniffing technique that floods the switch MAC table with fake MAC addresses.

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