Questions tagged [port]
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.
435
questions with no upvoted or accepted answers
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socket.error: [Errno 10013] Port forbidden access permissions
When trying to use a Python script I get this error:
socket.error: [Errno 10013] An attempt was made to access a socket in
a way forbidden by its access permissions
I put the post on ...
- 61
5
votes
1
answer
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Cannot start WebSite because port 80 is being used by W3SVC.exe
I have deverloped a website at work and we typically use port 80/443 for our websites (in development). This has worked well until today when starting the website gives me the error (IIS 7)
This ...
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2
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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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1
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How to free a port on OS X when lsof(1) reports that it is not in use
I am a developer working in OS X on Eclipse. A bug I have been working to fix in a web application results in some very strange behavior when resetting an instance of Tomcat, resulting in the ...
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3
votes
1
answer
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Point a subdomain to a minecraft server
I'm trying to get my minecraft server to be reachable through my domain name, as opposed to needing to connect with the IP and port.
Because I want to host multiple servers, it would be ideal if I ...
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3
votes
0
answers
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One domain, one external IP, two ports, one machine, three servers
I have one raspberry pi, running an Apache2 webserver on port 80, an Ogar (Agario) server running on port 443 and another Ogar server on port 444. The external location that I need to access this ...
3
votes
1
answer
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How do I port forward from adapter to localhost, changing ports
I am using an Ubuntu 16 server.
I am trying to use iptables to forward a port from a particular network adapter and port to a specific port on lo/127.0.0.1. It seems like the correct tool.
By way ...
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3
votes
1
answer
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NMAP Always says host is down (when using -Pn it says ports filtered)
I am running Kali 2.0 (Kali sana) and I have a problem with NMAP, it everytime says that host is down when I scan it (even myself with firewall off)... When I try online nmap (https://pentest-tools....
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0
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Port 4567 open on router to 'tram' traffic...Should I worry?
When I do a port scan on my router (nmap 192.168.0.1) the result is:
PORT STATE SERVICE
22/tcp open ssh
23/tcp open telnet
53/tcp open domain
80/tcp open http
443/tcp open https
...
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3
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0
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Installing and running two postgresql versions on different ports (or two instances of same server)
I have postgresql 9.1 installed on my machine (Ubuntu). I need another postgresql server that would run next to the old one. Exact version does not matter, but I'm thinking of using 9.2 version. How ...
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0
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how does the software firewall affect the hardware network card?
I am waking my computer up by sending magic packets. But if I close UDP port 9 from windows firewall, my computers is not booting. And also, the lights on ethernet port are off.
It looks little too ...
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0
answers
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USB hub assigning random com ports when Windows 7 PC or USB Hub are rebooted
I have four hardware devices that are plugged in through a self powered USB hub. Currently the devices are assigned COM1 COM2 COM3 COM4 through device manager as hoped. However, when rebooting the ...
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3
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1
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Why is my system using port 4?
I have Windows 7 and have noticed that my system is using port 4 to connect to a lot of different IP addresses. When it connects to them it is not for very long before it moves to another IP address.
...
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1
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Windows Firewall inbound rules still blocks ports
I applied inbound rules for port: 1935, as well as outbound.
When I check on canyouseeme.org, it says it (port 1935) times out.
When I completely turn off Windows 7's firewall, it works without a ...
2
votes
0
answers
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Netstate and process that are not there?
8080 port is occupied so I can not start glass fish server on it , so I use netstate and find the PID of program whom use that port , but problem start here there is no process or service with this ...
2
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0
answers
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Is there a port knock for ASUS Merlin firmware VPN?
I use a VPN in my ASUS Merlin flashed router and I have tried GRC's Shields Up and Zenmap (Nmap) to scan my router via another VPN to see if my VPN port in the router was open and it says stealthed/...
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0
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views
Multiple Processes listening on Port 22? How is this possible?
I have a Solaris 10 Server that has SSH enabled, I wanted to find out which specific process is responsible for opening the socket that listens for the port 22. I used the PFiles utility to loop over ...
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2
votes
1
answer
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Setting MAMP to use port 80 gives the "The requested URL / was not found on this server." message but it works on port 8888
I'm having this issue with MAMP on OS X Mojave. When I change the ports to be default (localhost:8888) the WordPress (wp-config) screen.
This is what I'm expecting to load since I haven't set up my ...
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2
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1
answer
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OpenWRT port redirection
I have an OpenWRT router.
What I need to achieve is a port redirection within my LAN zone. What I mean is, every time I hit local address on port 40413 it should to be redirected to 192.168.1.111:...
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2
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1
answer
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Can .NET memory leak cause port exhaustion?
Our web server has been having an issue due to port exhaustion. This happens every 2 weeks and a reboot fixes the issue. But I want to get to the bottom of this issue and find a permanent fix to avoid ...
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0
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What does the port forwarding feature "port range" & "local port" do?
My ASUS router has a a port range option in my port forwarding along with local port. Do I need to use both when port forwarding? I understand that port range is used for forwarding ports within a ...
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Port forwarding without admin credentials
I have a TP-link router for which I have to forward ports.But I'm behind admin router and I don't have admin router login password.I am trying to forward ports on my router but I do not have admin ...
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0
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ESP8266 SERVER PORT FORWARDING
Learning to implement a small server with the ESP8266 NODEMCU Amica board, it works and responds to a simple command by writing a string on my browser's screen. The server can be accessed from ...
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0
answers
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FTPS altered port
I had configured FTPS service on windows machine. It is working absolutely fine. User can access the site from browser using address ftps://IP_Address:990 by first acknowledging the site certificate.
...
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2
votes
0
answers
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ASUS RT-N66R won't allow port forwarding of 80
Has anyone else tried to port forward outside port 80 to inside port 80 on an ASUS RT-N66R? I just spent 3 hours trying to get a new web server functioning from the internet (which I've done quite a ...
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2
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1
answer
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What happens if all of the Ephemeral Ports are used in Windows?
If all of the Ephemeral Ports are used, and another socket tried to connect to a server, will the connection fail? or will the socket be assigned a port outside the range of the Ephemeral Ports?
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0
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Cannot connect SSH through PuttY even though server is online
I'm trying to connect to a server via SSH. The server is reachable according to http://www.infobyip.com/sshservertest.php and SSH works without problems on Android (JuiceSSH). However, PuttY errors ...
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votes
0
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What is the difference between these two ways of telneting
I'm trying to check to see if a port is open on something. If I
telnet licensemanager.domain.edu 25734
then I get a black screen waiting for input (blinking cursor)
but if I telnet and then o ...
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2
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0
answers
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Opening port 8080 on Windows firewall
I am not sure if I am just missing a trick here and it will be something rather simple, or if I am trying to do something that just isn't going to work..
Anyway, I have an asp.net site and I am using ...
James H
2
votes
2
answers
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Firewall open ports for vSphere
I need to open ports on a firewall, so that a client can access his VM console through vCenter server's Web Client. I had a look at this page about port description, but I am a little confused.
I ...
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2
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0
answers
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FFmpeg/avconv and UDP - connect listener after sender?
I'm trying to troubleshoot a port binding issue in avconv/FFmpeg. I have two test commands; one which sends an audio stream over UDP:
avconv -i test.wav "udp://localhost:6613?localport=6614&reuse=...
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2
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2
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Netgear WNDR4500 listening on port 80
I have a Netgear WNDR4500 that I use for my home router. I also have my own domain with a subdomain point to my IP. I happened to browse to it today and noticed the management console was listening ...
2
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0
answers
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What is blocking incoming packets to port 67?
I have a DSP connected to a Windows 7 laptop by Ethernet. The laptop has all firewalls disabled (I’ve even tried stopping the Windows firewall service and DHCP).
The DSP is sending well-formed BOOTP ...
2
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0
answers
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Enabling MS Security Essentials blocks port web server
I notice when I enable "real-time production" in MS Security Essentials that my web-service (on port 80) is blocked from outside my machine. I can still access it locally, even with my network IP.
...
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0
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How can I get all of my keys and mouse to work using Midnight Commander on OSX?
I used port to install it and I figured out how to fix home/end/pgup/pgdn in the terminal preferences, but still,
none of the keypad keys work.
the mouse doesn't work.
Any assistance would be ...
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2
votes
2
answers
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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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1
vote
0
answers
12
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why does netcat work(to scan) faster in local host in virtual box but not for remote server?
I am using netcat to scan the ip of metasploitable2 from my kali machine in virtual box.netcat is very much faster to scan an ip of a local machine in virtual box. But when I am trying to scan a ...
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1
vote
0
answers
38
views
Is there a way to close down a port used by a service during shutdown or boot?
I have some service listen.service which makes the machine act as a TCP server which other clients can connect to. The problem is once the service starts up, it doesn't actually do anything for about ...
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1
vote
0
answers
98
views
Multiple WSL2 instances with different Apache2 ports
I'm trying to run two WSL2 instances, as I thought it would be a nice and clean way to work on multiple websites at once which have different system requirements.
I am trying to achieve:
WSL Instance ...
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1
vote
1
answer
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views
Forward all traffic on a specific interface to a IP:PORT
I currently debug apps on different devices. Most of the devices have a method to setup a proxy that I can supply it a IP and PORT to send all traffic to. One of the devices, Roku, does not have this ...
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1
vote
0
answers
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views
why might nmap on a computer be reporting port 443 as closed on some but not all computers?
When I run nmap event-bridge.twilio.com on roughly half the computers in my network I get this:
PORT STATE SERVICE
443/tcp closed https
When I run it on the other half of the computers in my ...
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1
vote
0
answers
131
views
Port 2121 is blocked but no application uses it
I'm using Windows 11 and want to start an application that uses local port 2121. But currently I always get the message that the port is already in use.
Even completely reduced examples in Java or ...
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1
vote
0
answers
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views
Port forwarding for MyCloud NAS Device
So I've got a MyCloud NAS device and I used to have port forwarding set up on an old router. I recently moved and have a new ISP so I'm unfamiliar with the jargon used by this one. I've got HTTP port ...
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1
vote
1
answer
71
views
Capture traffic on specific SFTP Port
I have configured my SFTP server to run on the default SSH port 22 and another port (X). I want to monitor the traffic on my server in the default port to check if anyone is still using port 22.
I ...
1
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0
answers
705
views
WebSocket connections originating from local network all use same client-side port (instead of ephemeral) when connecting to local webserver - Why?
I set up a webserver on a virtual machine on my home desktop. I have my router forward several ports (80, 443, etc) to my desktop, when then forwards them via NAT to the virtual machine (see diagram ...
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1
vote
0
answers
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Connection refused on port 9283 even though the port is open and listening
I am running a Grocy docker container on a Raspberry Pi 2 [fresh Raspbian install]; the container is running, with port 80 mapped to port 9283 on the host:
Verify container is running via docker ps:
...
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1
vote
0
answers
183
views
AWS EC2 Apache port 80 closed intermittently
I am having website which is running on AWS EC2 Ubuntu - Apache2 - PHP.
The website was working pretty fine and all of sudden it became unresponsive. Following are things I have checked.
Apache - ...
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1
vote
0
answers
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Not able to connect to host on port 8080 and 4848 from browser
Glassfish is installed on remote Linux server (Centos).
Ports are open. checked by using command netstat.
im able to connect host using 'curl' and 'telnet' for mention ports(8080,4848) but not able to ...
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1
vote
0
answers
50
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How do I restrict access to all ports with source's PublicKey like SSH does?
I want a server to block any and all incoming traffic on all ports with the exception of the traffic from those machines which can be (and are right there and then regardless of the port being ...
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1
vote
1
answer
517
views
Specific user can't run Spring Boot application on port 443, but root can do it
I can't run a Spring Boot application on CentOS under a specific user on the port 443 (or 433 it doesn't matter).
Caused by: java.net.SocketException: Permission denied
Root can do it. When I tried ...
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