Can someone explain what this does? My provider has a button in his App to do this which looks like a personalised version of Smarters. Is the how they get the App to point to a new URL?
Can someone explain what this does? My provider has a button in his App to do this which looks like a personalised version of Smarters. Is the how they get the App to point to a new URL?
Hide search behavior: While the tracking of user behavior on the internet is primarily carried out by cookies, JavaScript, and others, the DNS cache still offers a potential target for all data collectors . On the basis of the listed addresses, including additional information such as the validity period (if given), you can get an approximate overview of your page history. In any case, your address storage betrays which projects you call up regularly or over a long time. The more comprehensive the collection of cached addresses is, the more you reveal yourself .
Security against manipulation: You should also clear the DNS cache from time to time for security reasons. The information in the cache is practical for delivering web projects – but can quickly become dangerous in the wrong hands. If cybercriminals gain access to the DNS cache , they’re in a position to manipulate the entries and, for example, redirect you to the wrong websites. This so-called DNS poisoning or DNS spoofing is often used to access sensitive log-in data, for example, to online banking. With a DNS flush, you can also dispose of such manipulated records with minimal effort.
Solve technical problems: A DNS flush on Windows, macOS, and others is often an effective solution if you’re experiencing technical problems when accessing web applications. For example, it’s possible that an incorrect version of the called website is being displayed due to outdated entries . In such cases, the domain name is probably filed in the cache with an incorrect or old IP address , which can be remedied by clearing the DNS cache. As a result, the request will once again be directed to the appropriate DNS server and not answered from the cache. With the updated address information , the connection to the web project will once again work as planned.
DNS servers are used to convert domain names such as www.example.com into numerical addresses that can be processed by computer systems. These “ name servers ” are contacted by default via the browser each time the corresponding projects are accessed, which slightly increases their loading time and can also lead to a DNS server overload in the case of a high number of visitors . Error messages like “ DNS Server Not Responding ” are a common and despised consequence.
For this reason, operating systems like Windows and macOS attach their own cache for called and resolved addresses – the DNS caches. These save all information that’s relevant for name resolution, each with an entry known as TTL (time to live) where data remains valid for a given time. Within this time, corresponding queries are answered directly from the cache without requiring a detour to the DNS server.
If the service provider have to change their DNS SSL older may have been compromised, the app needs to get newer DNS to work. So you press refresh DNS to connect to new.