A port provides a location for an application to interface with the network. If there is no application that is listening at a particular point, data sent there will never be used.

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Read data from COM port

I am trying to read data from device(http://www.genee-india.com/interactive-whiteboards/genee-powerboard/) wirelessly. Port Details:. com port Silicon Labs CP210X USB to UART Bridge(COM5). ...
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1answer
128 views

Port Forwarding on a dd-wrt Router

I want to be able to forward port 5678. Here's my equipment and details: Modem: ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Router: Cisco Linksys E2000 DD-WRT v24-sp2 OS: Windows 10 ISP: Cox ...
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1answer
66 views

Create a personal VPN at home to use with specific ports

I use a network where I'm allowed to use only port 80 and 22, so I can't use many app I need, I thought about VPN and more specifically I thought of using my Raspberry Pi as VPN server (I know it ...
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0answers
50 views

connecting jenkins vm to github with webhook, Windows 10

I have a Virtualbox guest VM running with Jenkins, in my Windows 10 host. The VM is exposed through a bridge, and I can access it in my browser at my Wi-Fi interface ip address. I have set up a ...
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0answers
66 views

Block Port 4000 on Window 7

On Windows 7 Enterprise 64 bit system Need to block Port 4000. Under system Firewall by creating inbound rules and outbound rules have blocked port 4000 but its not working. Need your advice. System ...
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2answers
105 views

Why did another port in URL in front get HTTP traffic?

An example of a URL that links to a web hosting control panel: http://example.com:3500 HTTP is port 80. Why does it list port 3500? Is it port 3500 or port 80?
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1answer
971 views

Adding thunderbolt port to windows laptop

I wanted to ask if it is possible to add a thunderbolt port via an adapter or some other way to a windows laptop.Thanks
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1answer
114 views

Access wamp localhost from internet

I have a website that I created on a WAMP (latest version 64 bit) server. It runs perfectly from the localhost directory. I'm now ready to have outside connections connect to my www directory. My ...
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3answers
55 views

Swapping SATA ports causes disk to click

I have a Dell XPS 8500. I swapped the drives that we're on SATA ports 0 & 1, and when I turned the computer on, the drive on port 0 made a clicking sound, and wasn't recognized by the BIOS. The ...
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1answer
278 views

Cannot open port 443 on modem

I'm developing a website, which requires an https connection because of the login system. I opened my Tomcat's Connector on port 443 and connecting through https://localhost works well, but i need it ...
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1answer
426 views

Port forward localhost using Xampp

I have built a wordpress site on my localhost:8081 . Now i would like to access it from the internet(please dont suggest ngrok etc etc). I have a netgear wgr614 router. Now this is what i have done: ...
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1answer
154 views

How can I redirect a subdomain without needing to use a port, on a home server?

Current setup at home: Router OS - openWRT Router remote access - port 80 Server OS - Arch Linux Web server - nginx Server web server access - port 81 (port redirection done in router) Modem IP ...
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1answer
47 views

Understanding Ports

Total laymen trying to get a grasp on my home network. I have noticed that my sons laptop is consistently running with port 445 "SMB directly over IP" and was wondering if someone could tell me if ...
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2answers
78 views

Windows firewall - opening ports by specifying .exe

Normally, you open ports by specifying port number and the protocol - either TCP or UDP. However, Windows allows me to add exceptions by specifying the executable file. How does it work? What happens ...
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1answer
88 views

Windows port forwading

i got the following setup on an windows server 2012 R2: i have 2 nics: Nic1 has an public ipv4 adress (lets call this 5.5.5.5) Nic2 has an private ip adresse (192.168.2.10) So now i want to ...
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votes
2answers
1k views

Cannot access MongoDB from the Internet

I am using MongoDB database, which is installed with the IP address 126.22.252.25. The Ubuntu version info is 12.04.3 LTS. My MongoDB uses the default 27017 port. On this local machine I can use ...
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1answer
120 views

Wake on WAN refusing to work. WOL works

Trying to setup WoW and I'm running out of ideas. I can wake it up on LAN so I know PC is setup right. I have forwarded ports 7,9 and 4343. Put in DMZ. I have tested when PC is on it does receive the ...
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3answers
31k views

test port by telnet command on localhost (OS=windows)?

I have windows Xp , I want to test some port , someone advice me to use telnet command on localhost to test it . but i don't know how i can do it (syntax of telnet command on local host) ?
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2answers
300 views

Some confusion about listening and open ports, difference between listening, open and blocked

I have been strugling for some time now to open ports on some Linux machines and I have followed some tutorials, which I tried in 2 different Linux VMs and failed for either, and after some research I ...
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0answers
47 views

Why are all my ports closed?

So I’ve tried to port forward some ports for different games but it’s never worked for a long time now. My router is an ASUS RT-N12D1. Im on a Windows 10, desktop computer with a wired connection. ...
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0answers
32 views

Problems with opening ports on Linux

Basically I have tried every tutorial I could find but I can't seem to open a port in a Linux VM. I tried downloading gufw and opening a port there; didn't work. I disabled gufw; didn't work Set a ...
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1answer
90 views

How do I find out what services are bound to a port number?

Given a TCP/UDP port number, how do I find out the name of the service bound to that port? I want to do this on various flavours of Unix. Mostly Gnu/Linux (usually Debian) and Mac OS X.
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1answer
89 views

XAMPP Server is not Starting in Port 80

I am using XAMPP Control Panel V3.2.1 I have configured port no 80 When I press Start I am getting Error like below I used below cmd in command prompt for which services is running in port 80 net ...
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1answer
2k views

SSH error: “Connect to host: Bad file number”

When on my local network, I can SSH into my desktop just fine by connecting to 192.168.0.5. However, When attempting to connect to my home IP, using the same port and user, I get the infamous "Bad ...
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0answers
21 views

Unknown UPnP Entries

Was checkout out my Firewall on which I usually have UPnP disabled, but turned it on as a debugging step for an issue I was having. I just noticed three ports registered that I am unsure where they ...
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0answers
99 views

Localhost is blocking external requests, how to unblock?

My localhost (xampp) is blocking external requests. Therefore for example the WordPress gives the error message: Warning: An unexpected error occurred. Something may be wrong with WordPress.org ...
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1answer
160 views

TCP server listen and client listen windows software

I am using Windows OS on an amazon cloud AWS with static public IP. On this machine I need to set up a TCP server to listen on port 2204 for raw data that will arrive from a GPS base station over TCP ...
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0answers
55 views

all ports closed, while modem is in bridge mode

A few days ago, all my ports were closed and as it turned out, I needed to put my modem into bridge mode, which I did. My default gateway in my router setup is equal to my external ip, so I think that ...
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2answers
44 views

How to find which application is using port 8080 and trying to connect open proxy? [duplicate]

I am using Hax-Chat for my IRC but for few days I am having error of open proxy so I asked them they replied on of my application is using open proxy port 8080. So question is how could is find which ...
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0answers
12 views

Asus x202e Power Port Not Working

I have a service contract with Asurion. I have sent my computer in twice for a problem they can't seem to find. My power-dc is not working. I at first thought it was my cord so I brought a generic ...
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1answer
34 views

Why my computer port is still closed

I am trying to open a port. First, I tried to open the port in the Windows 8.1 Firewall Settings but didn't succeed. Then I disabled the Windows Firewall altogether. But, even after disabling it, my ...
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0answers
215 views

Opening the Postgresql port

I'm trying to connect to a Postgresql server from a remote computer using: psql -U dbuser -h [host address] But I get the following error: psql: could not connect to server: No route to host Is ...
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0answers
15 views

Multiple UDP servers at same port, only locally?

Someone sends a UDP packet over the internet to a router public IP and port. Can this packet reach all the PCs of the LAN (using broadcast?) if they are listening on the port for UDP ?
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1answer
105 views

Home network port forwarding nightmare

Alright, this has been working somehow as it is till now, but lately I started getting issues. The setup is: a cable (internet) Linksys E4200 router a bunch of hardware (TV, unmanaged switches, ...
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1answer
64 views

All ports are closed, even though I forwarded them on both my modem and router

I wanted to open a certain port, but it didn't work. I portforwarded it on my Archer c5 router and on my Thomson TG789vn, but ping.eu still says it's closed... I did a port scan with nmap and it ...
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2answers
118 views

What port is used to connect a computer to a router?

I'm trying to find out what port is used when my computer communicates with my router. Is it the same port as is used for the service I am using, e.g. 80 when I'm using HTTP, or is there a specific ...
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1answer
84 views

Conflicting Port Forwarding results

Ook so weird situation. I'm trying to run a server socket in a python program (bit of code don't worry about it). For it to work I need to forward a port for the server to run on. I've forwarded the ...
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1answer
64 views

(VNC) port opening issue on windows 7

I want to be able to access my pc with VNC from a remote location. Because my pc is behind a router (TP-Link WR841N) with NAT enabled, I've forwarded the the required port (5900) to my pc's local IP-...
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0answers
6 views

Check for blocked outbound ports [duplicate]

I would like to do the exact opposite of a port scan from my server: attempt an outbound connection on several ports to a known open server and then determine if any outbound ports on my server are ...
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0answers
119 views

Cannot start old XAMPP after reinstall Windows

I have XAMPP located at D:\XAMPP. After reinstall Windows, I can't start that XAMPP anymore, in the XAMPP control panel, I quit Skype, changed its port to not use 443/80 port too, but it's not work. ...
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0answers
26 views

Problems accessing Rshiny inside a firewall

Here is the setup I am working with. Office:personal server (win2k8 running shiny + website with iis)+ laptop. Lab: I have tools with data but are behind a firewall, I do however have access to a ...
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0answers
94 views

Can't open port 8443 on WiFi Router Huawei WS 330

When I try to open port 8443, it doesn't save the port configuration. However, all other ports on my router can be opened easily.
0
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0answers
85 views

Issues getting VPNBook VPN and Soulseek to work together

So I set up a free PPTP VPN using VPNBook and I’m behind a router, and I opened ports thru 1 to 2000, and it works fine in my browser, but I can’t get Soulseek to work right. See there’s a thing this ...
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3answers
9k views

Find IP Address and Port of Internet Radio Channel

I am trying to find the IP address and port number of this radio station: http://tunein.com/radio/Classical-South-Florida-897-s30938/ (so I can add it to RhythmBox). I've looked through the source and ...
1
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1answer
411 views

Why won't apache bind to port 80 on Windows 10 upgrade

I just upgraded to Windows 10 and now Apache won’t start complaining that port 80 is in use. NetStat -a -b Says that it can’t figure out what process is using port 80. How do I find out and kill ...
13
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2answers
32k views

Netcat on Mac OS X

Is anybody else not able to get nc -lp 8888 working on Mac OS X? Is there another way to get this to work?
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2answers
60 views

how to verify firewall rule for a particular service?

How could i check which firewall rules are used by a particular service and whether port is blocked to restrict access by external users? i.e netstat -tulnp | grep 123 udp 0 0 0.0.0.0:...
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1answer
101 views

Can't connect to ssh server by global IP address when not on the server's Wi-Fi network

When on the same network it works fine with either the global or local IP address being used. I am forwarding port 22 like this: IP Address Start Port End Port IP Address Start Port End Port ...
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1answer
54 views

I accidentally opened a localhost port?

I had accidentally opened a port via firewall which had a WEBSITE(IIS EXPRESS) localhost port number. So could my desktop be hacked by opening a port? And also i had deleted it after a few minutes.
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0answers
1k views

How to Change SIP default port 5060

Port 5060 is blocked in our network, and I was wondering if it was possible to change it to 5222, which is a port used by Google Talk. If it is possible and I do change it, will I still be able to use ...