Top "Port" questions

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

Can I map a hostname *and* a port with /etc/hosts?

Can I map an IP address like 127.0.0.1 to a domain name and a port? For example, I would like to …

linux dns port hostname
Can't connect to Postgresql on port 5432

I have PostgreSQL 9.3 installed on a server running Ubuntu Server 14.04. If I ssh into the server via terminal, I'm able …

postgresql ssh port remote-access
Unable to launch the IIS Express Web server, Failed to register URL, Access is denied

Some web projects are causing me problems while others work fine. I decided to focus on one of the problematic …

asp.net visual-studio port iis-express
Forward host port to docker container

Is it possible to have a Docker container access ports opened by the host? Concretely I have MongoDB and RabbitMQ …

linux networking port docker
Sockets: Discover port availability using Java

How do I programmatically determine the availability of a port in a given machine using Java? i.e given a …

java sockets port
How do I change the default port (9000) that Play uses when I execute the "run" command?

How can I change the default port used by the play framework in development mode when issueing the "run" command …

playframework port playframework-2.0
What ports does RabbitMQ use?

What ports does RabbitMQ Server use or need to have open on the firewall for a cluster of nodes? My /…

rabbitmq port
Why is 22 the default port number for SFTP?

Why is 22 the default port number for SFTP? Is there any specific reason for this?

ftp port sftp
TCP: can two different sockets share a port?

This might be a very basic question but it confuses me. Can two different connected sockets share a port? I'm …

sockets tcp network-programming port
Default SQL Server Port

I have a VB6 application that uses SQL server. It needs to access it through a LAN. Therefore I want …

sql-server database networking port