![]() You'd give them the 76.189.X.X IP address though. The best way is for someone to try to connect to it from the Internet of course. If you want to confidently test to see if the port is reachable, then you need to run whatever app is supposed to be listening on it at the time. If you're port doesn't appear to exist (connection timeout) then the packets are being dropped somewhere (could be your router/NAT if you didn't port forward correctly or your firewall). If it is closed (reports as connection refused) then whatever test you're using made it to the port, so the port forward worked. So if you're not running the application or server that's supposed to be using that port, it will be closed. Your port will only be open if something is listening on it. For example there are likely millions of people that have 192.168.1.3 on their own internal network but there's only one person (or CGNAT) right now that has 76.189.X.X as their IP. You are forwarding your port through 76.189.X.X (your external/public IP that the Internet uses to communicate with you) to 192.168.1.3 (your internal/private IP to a specific device such as your server). u/RoweDent created this awesome resource on network theory ![]() u/tht1kidd_ has created a suggestion post regarding information everyone needs to provide when asking a question about their network There have been some excellent guides written in this sub, and we're always looking for more! If you wish for your flair to be changed, please message the mods and we'll be happy to change it for you. Proof of at least 6 month's history of posting in this subredditĪs a result of this, users are now no longer able to edit their own flair. Your highest level of industry certification, or highest IT related job title held in the last 5 years ![]() to a comment you made in the last 6 months, helping someone in the community To obtain trusted flair for your account please message the mods of /r/HomeNetworking with the following info Trusted user flair has been added as a means of verification that a user has a substantial knowledge of networking. Please flair your posts as Solved, Unsolved, or simply Advice. If you can't find what you're looking for with the search function please feel free to post a new question after reading the posting guidelines Please use the search function to look for keywords related to what you want to ask before posting since most common issues have been answered. ![]()
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