Basis for system managers to detect and fix problems. Besides error detection, this method also provides information, characteristics, and protocol properties for the network and devices. This information is useful for checking and managing the system, and can be updated fully, accurately and regularly. From there, the reliability and operability of the system are always guaranteed. 4.2. Save resources Sending loopback signals does not require any auxiliary devices or any special settings on the system.
You just need to execute the Czech Republic Email List command directly on the computer and wait for the results. The process of returning results also happens quickly, so it does not consume much time and resources. 4.3. Increase security on the system This method can only be applied in local networks, even within the same LAN. Therefore, information authorized in the system cannot be disclosed to the outside. Another application is that you can set up a firewall to filter packets from the routing engine when using loopback.
This way, outside threats will not be able to access the local network, increasing security. See more: [News] What is Dedicated IP? Compare Dedicated IP and Shared IP 5. Other meanings of Loopback This is a mechanism through which a message or signal returns to where it came from. Therefore, there are several other uses of loopback in Ubuntu that you should not confuse with loopback devices in the network.