Dynamic DNS (DDNS or DynDNS) is a method of automatically updating a name server in the Domain Name Server (DNS), often in real time, with the active DDNS configuration of its configured hostnames, addresses or other information.
The term is used to describe two different concepts. The first is "dynamic DNS updating" which refers to systems that are used to update traditional DNS records without manual editing. These mechanisms are explained in RFC 2136, and use the TSIG mechanism to provide security. The second kind of dynamic DNS permits lightweight and immediate updates often using an update client, which do not use the RFC2136 standard for updating DNS records. These clients provide a persistent addressing method for devices that change their location, configuration or IP address frequently.

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  1. G

    Best Practices When Using Docker & DDNS - from MariusHosting

    MariusHosting recently posted an article titled "Synology: Best Practices When Using Docker & DDNS." Most of the options proposed in this article are not on in my environment since they were never turned on by default. Asking here to see who has all of, some of, or none of these options...
  2. Cyberwasp

    DDNS security question

    I've been looking into accessing my NAS from outside my LAN. I finally got DDNS working with my cellphone and can go to my DDNS and see my desktop via cellular. My only question is, what is the best way to protect this from the outside besides not giving out the ddns address because when I do...
  3. Saqr

    Solving DDNS connection timeout issues

    Greetings 🙂 I did the DDNS setup using Synology as provider. Also did install the LE certificate in order for an SSL connection to be established from now on. Anyway, I managed to connect using this DDNS setup but later on the day another connection did not succeed ! How to diagnose...
  4. Saqr

    Setup DDNS Service on NAS

    Dears, Is it possible to self-host and setup a DDNS service ? A NAS-level DDNS and not a router-level DDNS. I suppose this includes a software that works in server role, on my NAS device, at my local network. What would be the benefits and costs ? Will it require first a local DNS server too ...
  5. M

    Best solution for DDNS setup

    Hi there, I just moved internet providers and am now back on a dynamic IP address (after many years with a static IP address). I host a few web sites using my DS 720+ and wondered what the best approach to DDNS is. I have set up the Synology DDNS and have a synology.me address which works...
  6. philthedoc

    Port number automatically added to DDNS url

    I have a DDNS domain name through No-IP that's working with DSM, and I can use https with LE certificates no problem. I want to use reverse proxy to stop so many ports being forwarded on my Netgear Orbi router. I'd be happy to just forward 443 to the nas and have everything coming through there...
  7. D

    DDNS requirements and certificate requirements

    I only access my NAS from my internal Lan. However, I want to get a certificate so that I can connect to the admin page using SSL without getting browser prompts. I don't have a static IP or a registered domain name. I was thinking of using Synology DDNS to get an externally resolvable hostname...
  8. X

    Need a process-check for setting up SSL-Secured Synology Drive connections

    (also posted this on reddit/synology, but no responses) Hi- Setting up two identical DS’s for a new client. One will be in their small office (primary NAS), the other at the owner’s home as an offsite Drive sync copy. Users will have the Drive client installed on their work machines and mobile...
  9. X

    DDNS not working

    i just updated my dsm like 10 minutes ago and now my ddns does not work even though it worked before the update
  10. Andy

    DDNS over QuickConnect?

    Bit of a newb question but if I want to give someone their own folder on my NAS and have them access it remotely, why use DDNS and port forwarding when QuickConnect will allow them to access it?
  11. P

    No Access from far away to the Synology

    Hey Folks, I have the Synology DS220J and want to have access from everywhere in the world to this NAS. The problem is i already tried the DDNS with putting all the Ports in the Router but it seems not to work. Everytime its faling. Now i tried the Synology Drive Softwhere for Linux even where...
  12. J

    Very odd.. DS Video streaming is fast only when using quick connect!

    I thought some ISP throttling was going on.. check the connection on both ends, no packet loss on both ends... Both (where the synology and client locations) fast enough connections for full quality video stream without transcoding... The port for DS video is forwarded properly, it connects and...
  13. B

    DDNS For Docker

    I have my ddns for my synology set up with the dns and reverse proxy but it redirects to my DSM home page and not to vaultwarden. Hostname: SubDomain.DDNSDomain.i234.me Port: Custom Port -------------------------------------------------------------- Destination Hostname: My DSM IP Port: Local...
  14. Nefe

    Please Help DDNS

    Hi everybody, I am new to the forum and I was wondering if somebody could help me with VPN-DDNS. The DDNS has been set up correctly, I can prove it because the DNS server is using my DDNS. The only problem am having is the DDNS working with the VPN (OpenVPN or L2TP). The VPN works well with my...
  15. philingle

    App launcher and sharing links with reverse proxy

    Hi I have been running along fine with my reverse proxy setup for a while now so I have webmail.mydomain.com drive.mydomain.com photos.mydomain.com and sticking that in the URL takes me directly to the app. However if I then try to use the app launcher (little icon with four squares top right...
  16. K

    Setting up DDNS

    Hi all, I am looking to setup DDNS rather then using quick connect. I have a Netgear Nighthawk router and then have an Asus mesh system that runs out of the nighthawk. I believe that you have to do some port forwarding and with my limited knowledge I wasn't able to get it setup. Anyone know...
  17. Ellucho

    DDNS no longer works with VPN on router | DS220+ (NAS)

    Hello everyone ! Thank you in advance for your help. I have a DS220 + NAS which is accessible from the outside thanks to a DDNS link to a domain name, it all works perfectly. The NAS is connected to an ASUS RT AX88U router with the necessary ports open. BUT, when I connect the router to an...
  18. tekguru

    DDNS failed.....

    I'm seeing an issue today whereby the DDNS settings on the DS918+ are blank (instead of the external IP being shown) and the NAS is reporting there is no external connectivity. On checking the Synology account for the connection that reports all is normal. I've rebooted the NAS and it looking...
  19. A

    Reverse proxy issues for docker containers in DSM7

    I have for the past couple of days trying to get the reverse proxy to work in DSM7. I have used the tool within DSM7 itself to try and achieve this but with mixed results. Full disclosure that I'm learning as I go and have had several tutorials as a starter (). So I'm thankful for any help that...
  20. Telos

    DSM 6.2 Cert Confusion... Reaching Plex with Synology DDNS

    I have a valid LE cert for xxxxxxxx.synology.me. When I attempt to reach Plex using the link in Package Center/Plex https://xxxxx.synology.me:32400/web http://xxxxx.synology.me/32400/web I get from Edge: When I inspect the certificate for this page, it is for Plex.com, not my DDNS domain...