My Internet access provider changes my IP address regularly. Will the website that I will deploy on IIS remain available for external users, even if my IP address won't always be the same?

3 Answers 3


The easiest way is to use a Dynamic DNS (DDNS) provider. There are a number available:




  • 1
    Nitpick: not only if you use DDNS. You need some way to connect the hostname to your home server, and DDNS is one specific way. Another way would be having an external proxy for your domain that proxies to your (changing) IP address. Or setting up a IPv6 tunnel, and set up DNS for the unchanging IPv6 address. I mean, DDNS is an appropriate answer, and probably best here, but it's not the only way.
    – marcelm
    Commented May 13, 2023 at 16:19

Talk to your ISP and get a cost for a single static IPv4 address.

Depending on their policies, you might be required to move to a "business" grade connection which will cost more but give you a better SLA, and maybe a small routed block of static IPs.

This becomes a cost/benefit proposition if you're serving a home or business website.

Aside - its worth asking about IPv6 support too. You would like at least a /64 fixed prefix, and a /60 would give you 16 blocks of 4 billion addresses


One method which does not rely on DDNS is implemented by (for example) ngrok, Serveo, and Pagekite. They essentially perform port forwarding over a tunnel to allow users to hit one of their public addresses and get redirected to your private server. It's like this:


[U] is your computer at home. It connects to ngrok and leaves that connection up and running. That connection is a tunnel, which allows network traffic to be passed back and forth . Your Users, then, connect to a public address that ngrok has assigned to you. When they do so, ngrok says "Oh! This traffic is for U!" and it routes that traffic over your tunnel, and your PC sends back its response via the tunnel, etc. etc. ngrok is a little bit like a reverse proxy, a little bit like a VPN, a little bit like a router.

Since the role your computer at home plays is purely as a client in this scenario, it doesn't run afoul of the various inconveniences your ISP will scatter in your path. Worst case they might kill long-lived connections, but the client on your machine will notice and spin another connection up.

I'm surprised Serveo is the only service being flagged. It turns out that many people who manage and secure networks frown upon you opening up your work PC to the Internet, bypassing all the expensive firewalls and IDS and DLP controls they put in place. (I know that doesn't apply to what you do with your PC at home. But if you're wondering who would find these programs malicious, the answer is, any corporate IT team.)

  • I think you need to explain a bit more. The link to ngrok and Pagekite leaves me none the wiser. And Serveo is tagged as dicey by MalwareBytes Commented May 14, 2023 at 0:35
  • 1
    Yeah, our corporate IT recently implemented group policies to completely kill ngrok processes even though up until the latest VS release it was among MS's recommended tools for debugging and testing a number of services... Commented May 18, 2023 at 17:44

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