What are the uses of static IP
Advantages and disadvantages of dynamic or static IP addresses
In a nutshell: When surfing the Internet, it does not matter which addresses are used, but with dynamic addresses the protection of privacy against third parties is much better preserved. If, on the other hand, you want certain devices or servers to be accessible from the outside, you need static IP addresses. Although there is the possibility of achieving a similar effect via fast DNS updates (e.g. dyndns, etc.), this is actually only applicable for amateur purposes.
When establishing a DSL connection, when static IP addresses are used, the same address (es) are always assigned, while dynamic IP addresses always have different addresses. This address is then an integral part of every Internet data transmission. If I access a server on the Internet, for example when I call up a website, this server learns my IP address so that it can send me the corresponding answers. Conversely, if I want to make a server or device accessible behind my DSL connection, they must know my IP address. For this purpose, names that are easier to remember are usually used, which in turn merely represent a reference to my IP address.
The main advantage of dynamic addresses is that the changing IP addresses make surfing much more anonymous - which is certainly an important aspect in times of NSA & Co.! If I'm not ordering something online, my identity is initially nobody's business. And nobody needs to be able to tell from my IP address that I visited the site yesterday or tell third parties that the user of my IP address is interested in a certain product. However, one should not overestimate the anonymity: On the one hand, many website operators like to set cookies and thus identify their visitors, on the other hand, we are of course obliged to give the customer data to the investigating authorities in the event of legal violations.
However, with constantly changing addresses, it is only possible to access devices or servers from the outside with “pull-ups”. If you want to offer services on the Internet yourself, such as your own web or mail server and much more, you absolutely need static IP addresses. There are countless other applications in the IT area, but more and more devices for everyday use can now be connected to the Internet - and make remote access interesting or necessary.
Those who only “surf” the Internet are better off using dynamic IP addresses. If you only want to make devices accessible from the outside, you absolutely need static addresses.
And if you want to do both at the same time, you can now simply use both addresses with us - dynamic addresses for surfing, via the router, via NAT and static addresses for all devices that should be accessible from the outside. Without any additional costs.
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