Should I enable dynamic DNS service?
I have a home server with OpenVPN running on it.
I use it to connect to my ISP and do torrents and such. However, it takes a while for my IP address to be changed, so I was wondering if I should enable Dynamic DNS service on my router. Is there any downside to enabling this service?
No, you don't need dynamic DNS. Just set your VPN IP in the Dynamic DNS field of your router (or DNSMasq).
That way, even if your dynamic DNS service is down, the routing will still work as usual.
Is there a free dynamic DNS service?
I am looking for a free dynamic DNS service that I can use with my Raspberry Pi.
It would be nice if I could simply tell my Pi "add www.xyz.com/asd to my dynamic dns service", and then it would work without needing to go through the trouble of configuring all my web servers. Is there such a thing?
DynDNS is free, but has some limitations. You can add it to your router (or any device that can connect to the Internet), or you can use their web-based interface for dynamic updates.
What is Dynamic DNS for home router?
It is a simple, very powerful and easy to use software that can add IP addresses for all your networked devices.
Dynamic DNS. Here are the steps how it works: You have to have access to router's admin panel. Router usually is configured with default IP address.
Once you are in admin panel, you will see page called Dynamic DNS Management where you will see 4 options as below: Add/Remove: You can enter either a new or an existing IP address. If it is an existing IP address you will see a warning icon which mean that you have to create new record using the following process.
Existing IP Addresses: You can see existing IP address or add new IP address here. Delete: When you select this option, it will remove all the records that you entered earlier. Add New IP Address: If you select this option, it will add a new IP address for you. If you want to add a new IP address, there are few things to note: After adding IP address, you will see warning icon which means that your new IP address will be used for Dynamic DNS. Before you create a new Dynamic DNS record, you need to provide a primary name that your IP address will be given. It will be shown as a value to the left of the text box and you should write a short text in the text box.
Example of my first Dynamic DNS record: If you delete or edit already existing Dynamic DNS record, then it will be replaced by new or modified values. In most cases it is recommended to create Dynamic DNS records for both new and existing IP addresses. This will allow you to additional IP address for home networked devices if you want.
There are other things which will be discussed in different sections but you will be able to learn how to use Dynamic DNS if you go through the complete guide. For more information about Dynamic DNS, you can visit this link. I hope this guide has been helpful. If you have any queries or suggestions, please leave a comment below.
Should Dynamic DNS be on or off?
Many of my colleagues use dynamic DNS services such as DynDNS, DYNDNS, DNS Dyn, DNS Made Easy (DYNDM), Dyn.com, OpenDNS, and more. I don't understand why so many people turn their dynamic DNS on. While these services are good for a while, they eventually become out-of-date, and are not very reliable. Many services use a static IP address that is not guaranteed for as long as you're using the service.
In addition, some of these services keep log entries of your activity. While this information can be useful in some circumstances, it could be used to learn about your activities. You'd have to make sure your own DNS servers don't keep logs.
What can go wrong? This is an interesting question. As you might imagine, the DNS provider can change its IP address at any time, especially if there are lots of clients using that DNS provider. If this happens, the IP address changes and it's no longer reachable from the outside world. If you are running a dynamic DNS provider, there's no easy way to tell that the IP address has changed. Some dynamic DNS services won't inform you when this happens, or it may take a while before they fix it.
Some services try to solve this problem by adding an entry into their record, but this can be easily spoofed as well. For example, imagine I create an entry in my My DNS Name that says it's my dynamic DNS address: If I try to access that IP address, I would get an error message, as I'm not allowed to access this IP address. Now if I create an entry that says it's not my address, and I'm still trying to access the IP address, it will also say that the IP address is not my address. So how can I tell that this IP address really belongs to my DNS name? Well, if I'm trying to connect to the IP address, I will get a response saying that this IP address is invalid. But if I create an entry for this IP address, I will get a response saying that this IP address is valid, but that it belongs to my DNS name.