I am a novice at networking, I have a NodeJS server running with server.listen(3000, '10.0.0.7'); and have forwarded port 3000 with the internal IP address of my server being 10.0.0.7. I can connect from another machine on my network by putting in the browser: 10.0.0.7:3000. It is my understanding that my external IP address should connect me to the router which should then forward me to the server I have set up on 3000.
Am I missing something important? Because I am unable to connect via the external IP address.
Also please note that my firewall is disabled.
I am neither a network expert so excuse me if I use any incorrect terms. In my understanding, you are right about the current configuration, however you are missing the last step. By default, your router makes your LAN unreachable from a so called “external ip”. Just for the definition: external ip in this case is every ip that is not in your LAN. Imagine if your router would allow any communication without you explicitly giving permission. Every open port on your LAN would be available for the network that your router connects to. That is definitely not desirable.
Lets look at it with an example, quoted from this article:
your router has an ip of: 5.6.7.8 if you access it from outer network (internet)
your router has an ip of: 192.168.1.1 if you access it from your LAN
your laptop is in your LAN and has an ip address of 192.168.1.10 and you want to expose port 3000 from your laptop to the outer network (internet)
You have 2 options:
You can expose the port via the configuration of the router (e.g.: you map 5.6.7.8:3000 to 192.168.1.10:3000 in the router configuration and now it will be accessible from the outer network on 5.6.7.8:3000. Note that you can choose any free port, ports don’t have to match.). Of course it is only possible if you have the option to configure the router and you are willing to do so. (e.g.: if you are not in a café)
You can use some tunneling tools like Ngrok or OpenSSH, which make a direct tunnel between the external machine and your server. This can also work if you don’t have the ability to change the router configuration.
Hope I was able to help. Good luck.
I know how to connect devices that are in the same network, however, how do I connect two different devices in different networks using sockets. I know that you must open up a port and whatnot, however my question is how do I do this pythonically without manually doing anything?
You can do it the same way as you do it now as long as long as you know the IP address and the port the socket is bound to. You will have to configure your router to do so though.
Unfortunately in order to do that you have to make sure the router and the firewall will allow that package to come through. For example you can access your home router and open the port you wish to communicate and forward the data in that port to a specific machine inside your home network. When data comes to that port your router will forward the data to that computer.
If there is a way to control your router options from python then you can do that just using python. I don't know more details on that though.
I have my nodejs server app running on my windows 10 machine which uses my home internet connection.
When I am connected with my phone to my home internet and write the IPv4 Address and port I get a response and my web page loads, but when I use a different internet connection it doesn't load.
I turned off the firewall, tried a lot of different ports but nothing worked.
I tried app.listen(8000) or app.listen(8000, "0.0.0.0") but both didnt fix the problem.
Any ideas what might be the problem?
OK I found out how to do this, my port forwarding was not configured correctly.
Here is how I solved it in case someone has the same problem:
Connected to my router (in cmd write ipconfig, copy the Default Gateway ip and paste in browser).
Clicked port forwarding (each router have it in different place), set external IP to 0.0.0.0 and my app port, and set internal ip to my computer ip (you can just write "what is my ip" in google) and same app port.
I hope it will help someone.
folks I want to know how I can open port for iis.I have also tired from firewall to open port but I can't it's seem I am missing some thing actually i have site (example on port) 7895 in my local I can access it by type localhost:7895 in browser or 192.168.1.1:7895 (local ip) but want to open it through over net for example my external ip is 119.155.116.102 so 119.155.116.102:7895 how I can do it? Yes is there any problem in router I mean I need to open or some function in router to open port?
thanks for answere!
Yes in most cases you need to open port in your router first (check your NAT settings section), and then setup IIS site binding to 7895 port
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I am wanting to access a website from a different port than 80 or 8080. Is this possible? I just want to view the website but through a different port. I do not have a router. I know this can be done because I have a browser that accessing websites through different ports, Called XB Browser by Xero Bank.
Thanks for the answers. So, if I setup a proxy on one computer, I could have it go from my computer, to another computer that then returns the website to me. Would this bypass logging software?
A simple way is to got to http://websitename.com:174, and you will be entering through a different port.
If your question is about IIS(or other server) configuration - yes, it's possible. All you need is to create ports mapping under your Default Site or Virtual Directory and assign specific ports to the site you need. For example it is sometimes very useful for web services, when default port is assigned to some UI front-end and you want to assign service to the same address but with different port.
You can use ssh to forward ports onto somewhere else.
If you have two computers, one you browse from, and one which is free to access websites, and is not logged (ie. you own it and it's sitting at home), then you can set up a tunnel between them to forward http traffic over.
For example, I connect to my home computer from work using ssh, with port forwarding, like this:
ssh -L 22222:<target_website>:80 <home_computer>
Then I can point my browser to
http://localhost:22222/
And this request will be forwarded over ssh. Since the work computer is first contacting the home computer, and then contacting the target website, it will be hard to log.
However, this is all getting into 'how to bypass web proxies' and the like, and I suggest you create a new question asking what exactly you want to do.
Ie. "How do I bypass web proxies to avoid my traffic being logged?"
No, as the server decides what port it is run on. Perhaps you could install a proxy, which would redirect the port, but in the end the connection would be made on port 80 from your machine.
You can run the web server on any port. 80 is just convention as are 8080 (web server on unprivileged port) and 443 (web server + ssl). However if you're looking to see some web site by pointing your browser to a different port you're probably out of luck. Unless the web server is being run on that port explicitly you'll just get an error message.
It depends.
The web server on the other end will be set to a certain port, usually 80 and will only accept requests on that specific port. Something along the chain will need to be talking to port 80 to the website.
If you control the website, then you can change the port, or get it to accept requests on multiple ports.
If the website is already talking on a different port, you can just use the colon syntax to reference another port (eg: http://server.com:1234 for port 1234).
If you want to use a different port on your client end, but you want to talk to port 80 at the web server end, you'll need to route traffic from port x to port 80. A common way to get this up and running is to use Port Fowarding. ssh can do this for you, see here for a Unix/technical overview or here if you're on Windows.
Hope that helps.
when viewing a website it gets assigned a random port, it will always come from port 80 (usually always, unless the server admin has changed the port) there's no way for someone to change that port unless you have control of the server.
If website server is listening to a different port, then yes, simply use http://address:port/
If server is not listening to a different port, then obviously you cannot.
Unless you're browsing through a proxy, the web servers hosting the sites you want to access must be configured to listen to a port other than 80 or 8080.
Perhaps this is obvious, but FWIW this will only work if the web server is serving requests for that website on the alternate port. It's not at all uncommon for a webserver to only serve a site on port 80.
You can only access a website throught the port that is bind with the http server.
Example: i hava a web server and it is listening for connections on port 123, the you only can get my pages connecting to my 123 port.
To clarify earlier answers, the HTTP protocol is 'registered' with port 80, and HTTP over SSL (aka HTTPS) is registered with port 443.
Well known port numbers are documented by IANA.
If you mean "bypass logging software" on the web server, no. It will see the traffic coming from you through the proxy system's IP address, at least. If you're trying to circumvent controls put into place by your IT department, then you need to rethink this. If your IT department blocks traffic to port 80, 8080 or 443 anywhere outbound, there is a reason. Ask your IT director. If you need access to these ports outbound from your local workstation to do your job, make your case with them.
Installing a proxy server, or using a free proxy service, may be a violation of company policies and could put your employment at risk.