Top "Port" questions

A port is a communication end-point in the context of network communications or an interaction point for inter-component interactions.

What is process.env.PORT in Node.js?

what is process.env.PORT || 3000 used for in Node.js? I saw this somewhere: app.set('port', process.env.PORT || 3000); …

node.js express port
Accessing localhost:port from Android emulator

I'm running a web service on my local machine that runs at localhost:54722. I want to call the service from …

android android-emulator localhost port
What is the theoretical maximum number of open TCP connections that a modern Linux box can have

Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections? I understand that the number of …

tcp linux-kernel port file-descriptor
Change Oracle port from port 8080

How do I change Oracle from port 8080? My Eclipse is using 8080, so I can't use that.

oracle port
How to find an available port?

I want to start a server which listen to a port. I can specify port explicitly and it works. But …

java networking sockets port
How to check Network port access and display useful message?

I was trying to check whether the port is opened or not using powershell like follows. (new-object Net.Sockets.TcpClient).…

powershell port powershell-2.0 port-scanning
How to open a web server port on EC2 instance

I'm running a CherryPy web server at 0.0.0.0:8787 on an EC2 instance. I can connect to the web server via local …

amazon-ec2 webserver port cherrypy
How to open a specific port such as 9090 in Google Compute Engine

I have 2 Google Compute Engine instances and I want to open port 9090 in both the instances. I think we need …

google-cloud-platform port google-compute-engine
Access localhost from the internet

I need to forward my localhost for a short period of time for testing purposes. It has to be accessed …

localhost port wamp portforwarding