firewall
to prevent unauthorized persons from gaining access to a private network
Firewall
Unauthorized access is the use of a computer or network without permission. Unauthorized use is the use of a computer or its data for unapproved or possibly illegal activities.
to protect a computer or network from unauthorized access
Rogue
Which of the following can compromise network configuration, spread viruses and spyware, and allow unauthorized access to data?
It uses a 128-bit pre-shared hexadecimal key to prevent unauthorized wireless access.
use wireless encryption. for example, WPA or WEP (http://en.wikipedia.org/wiki/Wifi#Network_security)
network security means protecting data and resources from access by unauthorized persons
Yes, an unauthorized person is not allowed to access certain areas or information. Unauthorized access can pose security risks and violate privacy policies. It is important to secure access controls to prevent unauthorized individuals from gaining entry.
This is assuming that there is no outside access to the Ethernet network such as a Internet connection. If there were then firewalls would be needed to prevent a outside intrusion of the network. In addition to physical access security, a wireless network requires authentication and encryption to prevent unauthorized devices from connecting to the wireless network or capturing and decoding the data that is being transferred via a wireless network connection. If the wireless network has outside WAN access then you would also need firewalls as with the Ethernet network.
To prevent unauthorized access through external back doors, security measures such as implementing strong encryption, using multi-factor authentication, regularly updating software and patches, monitoring network traffic, and conducting regular security audits can be implemented.