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It is common security practice to close unused ports in personal computers, so as to block public access to any services which might be running on the computer without the user's knowledge, whether due to legitimate services being misconfigured, or the presence of malicious software.
ICS provides NAT services, mapping individual IP addresses of local computers to unused port numbers in the sharing computer. Because of the nature of the NAT, IP addresses on the local computer are not visible on the Internet. All packets leaving or entering the LAN are sent from or to the IP address of the external adapter on the ICS host ...
Chromeboxes, like other ChromeOS devices including Chromebook laptops, primarily support web applications, thereby relying heavily on an Internet connection for both software functionality and data storage. That connection, via a local area network, can be wireless or through an Ethernet port.
In computer networking, port knocking is a method of externally opening ports on a firewall by generating a connection attempt on a set of prespecified closed ports. Once a correct sequence of connection attempts is received, the firewall rules are dynamically modified to allow the host which sent the connection attempts to connect over specific port(s).
A whole floor of a building in New York City was once functioning as an "illegal police station" for the government of the People’s Republic of China, according to the U.S. Department of Justice ...
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1. Click the Apple menu, and then click Shut Down.. Note: Wait for 20 seconds, and then turn on the computer. 2. On the keyboard, hold down the Command and Option keys, and then tap the esc key.
Simply do not put any hosts on VLAN 1 (the default VLAN). i.e., assign an access VLAN other than VLAN 1 to every access port Switch (config-if)# switchport access vlan 2; Change the native VLAN on all trunk ports to an unused VLAN ID. Switch (config-if)# switchport trunk native vlan 999; Explicit tagging of the native VLAN on all trunk ports.