$lastKnownIp = Get-Content $tmpFile | Select-Object -First 1 $externalIp = $webClient.DownloadString("").Trim() For this I decided to use PowerShell running as a scheduled task. The next step then is to write something to keep this entry up to date with the correct IP address. When you have setup the dynamic host, make note of the authentication token created as we will need this shortly. You can choose any name, but be sure to set the TTL to 60 so that when your IP does change, it doesn’t take too long to propagate those changes. Once you have signed up, go ahead and create a dynamic host entry.
For this I’m going to use EntryDNS as it is free and has an API which will help with the next bit. What follows then is my solution.įirst thing you’ll want to do, is sign up to a DNS service that supports dynamic IPs.
Having done this for like the 100th time, I decided to spend some time and try an automate this so that I wouldn’t have to do it anymore. The problem with this though is that I have a dynamic IP which means my external IP will change from time to time and when this happens I have to log into the server and update the filter with the new IP. This is a simple way of ensuring the people that connect to my server, are who they say they are. I’ve be using FileZilla Server as my FTP server of choice for some time now and as part of my security measures, I like to ensure that all the users I set up are filtered by IP address.
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