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.
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Port forwarding between Host and QEMU VM
I am accessing a host using a SSH over a VPN. That host have a VM on QEMU which I deploy using virt-manager. The host and VM are able to communicate. The VM have a Apache Webserver running. I am able ...
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Unable to connect to VPS via ssh on any other port than 22. Connection timed out error
For security reasons I changed the port for an ssh login to a different port number. But as soon as I do and try to reconnect, I get a 'Connection timed out error'.
Once I switch back to port 22 it ...
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What Is the TELNET User and Password for the Y4C-ZA security camera
I bought a Y4C-ZA security camera recently, I scanned all the open ports on it, and found there was a telnet port open: port 23, does anyone know what the telnet credentials would be, also, the ...
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netstat shows listening on some ports but nmap shows none
Please help me figure out why the destination host shows processes listening on some ports:
But source host sees all ignored?
What exactly am I missing?
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Mystery "it works" message on port 8080 - no web server installed
I'm running Arch. I don't have Apache or any other web server installed. Accessing localhost:8080, I get a plaintext response:
it works
No HTML, nothing. I don't know what process is serving this. ...
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Is there a way to capture an dns name and port petition done by an app and redirect it to another needed ones? [duplicate]
I have a Windows app that is client of HFSQL server, programmed in WinDEV.
The app has the dns name and port number petition hardcoded in the .exe file.
I need to 'capture' that dns name and port and ...
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I cant start apache with my Public IP address in Listen Configuration
I am currently using AWS Ec2 ubuntu (20.04) instance.
I have installed apache2 and configuring the Listen directive for apache.
But, i cant give the public IP address of my Ec2 instance in "...
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FTPS conncetion to Fritzbox NAS fails - due to EPSV / PAS port change?
I am using my FRITZ!Box 3490 with a connected USB HDD as a NAS server. I have configured a certain port (32753) for FTP communication. To ensure a static static servername (u**********u.myfritz.net), ...
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Hyper-V Synthetic Ethernet Port: Error 'Access is denied'
Any suggestion how I can fix it without resetting Windows?
The error I get on VM start up
I have tried everything basic like switching off and on Hyper-V, deleting and recreating virtual switches, ...
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How can I view an app in development from a remote computer?
I have a domain [I'll call it mydomain.com] configured for a Lightsail instance. This Lightsail instance comes with NodeJS preinstalled, packaged by Bitnami, which makes some changes to a standard ...
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Centos 7 Not Responding Except Port 80
I'm facing an issue and I want to ask for any solution ideas. I have a CentOS 7 virtual server on the cloud. On this server, I installed Virtualmin. Last week, everything was working fine, but just ...
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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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How to find out what is blocking inbound traffic on Windows when firewall is turned off
I have a personal Windows 10 Pro that I use for some C# development. When I test my ASP.NET Core app, I run it using Visual Studio (which in turn starts IIS Express).
I needed to test how my app is ...
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Connect to containers without specifying port in url (nginx)
I want to connect to containers via nginx location blocks without making the port visible in the url for a large scale application
my current block is:
location ~"/name/(.*)/(.*)/([0-9])/"{
...
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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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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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On Linux, can you be notified when a network port is used and generate logs?
I'm trying to write a script that detects and logs when a network port is opened/closed.
For example, say I open a port and close it using npm's http-server package:
$ npx http-server -p 8080
[ctrl^c]
...
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USB Ports are not working in BIOS
I have a Lenovo H530S desktop with 6 USB Ports. 2 USB 2.0 (Black) Ports at the front, 2 USB 3.0 (Blue) Ports and 2 USB 2.0 (Black) Ports at the rear.
Only 1 USB 2.0 (Black) Port is working in BIOS or ...
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Is it different DC power jack for each different laptop?
I have replaced my DC power jack (DC301015T00) by local shop owner with another DC power jack (DC30100U00D). But my laptop default charger (45W) is not working(charging symbol coming but not charging ...
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How can I deal with ports that are open on the WAN side of the router?
Some ports in the WAN side of the router seem to be open
The port scan in the ShieldsUp! site showed ports 22, 23, 80, 443 and 8000 as open
Then, by checking with nmap while connected to a mobile ...
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A piece fallen from my Dc power jack of Dell Inspiron 15 3000 (3501) laptop
A piece fallen from DC power jack. I took picture of it below.
frontside of the piece
backside of the piece
I dont know whether it is fallen from charger adapter port or from laptop charger port.
...
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Why are local ports being opened outside of the Dynamic Port Range?
Ran the following command on a Windows client machine.
> netsh int ipv4 show dynamicport tcp
Protocol tcp Dynamic Port Range
---------------------------------
Start Port : 49152
Number of ...
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Does VPN use own, dedicated Ports? Or does the encrypted traffic just go through 443?
Let's say I use the OpenVPN protocol encrypt my network traffic. What port does the VPN use?
Does the encrypted traffic just go through 443 or 80? (HTTPS/HTTP)
or does the VPN create use its own port ...
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How can I run my cloud network alongside Microsoft office online server
I am currently running a Nextcloud on my server and it is already using ports 443 and 80. I want to install Office Online Server on the same machine, but currently, I have to run them separately since ...
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If a Firewall blocks an incoming Port, and an application listens to that exact port, what happens?
Lets assume that I set up a Firewall Rule, that blocks all incoming traffic from Port 23 (Telnet).
An Application now tries to listen to Port 23. .
What happens?
Does the Application listen to that ...
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Windows 10 USB port allocation
In a production line PC, a device-under-the-test product is plugged in and allocated with a port number. Then unplugged and the comport disappeared from the device manager list.
When a new product is ...
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Drop WLAN/local wifi connections to router management?
RouterOS v6.48.6 (long-term)
I've set a rule: Protocol (6) tcp; dst. port 8291; In. interface list WAN.
UPDATE START.
Due to comments, I understand that WAN was not correct. I am a beginner in terms ...
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Does netstat show open ephemeral ports?
I chatted with one PhD student in my group and he told me that Windows has 2,500 open UDP ports.
Thus, if some ephemeral port is used within 2500 open UDP ports, it'll be difficult for attack to be ...
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I need help closing up some ports on a debian 10 server
I ran nmap on my server and i need help closing up a few ports
PORT STATE SERVICE VERSION
25/tcp filtered smtp
135/tcp filtered msrpc
139/tcp filtered netbios-ssn
445/tcp filtered ...
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Nmap does not show all open ports
When I run nmap -p- 10.129.175.12 I get
Host is up (0.00026s latency).
Not shown: 65534 filtered tcp ports (no-response)
PORT STATE SERVICE
80/tcp open http
But I know that there is a 5985 port ...
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Forward port other than 80 for HTTP Server
I would like to host a web server on my computer for at most a day. My ISP has blocked port 80 and the only port open is 22. My question is if I could forward this port so that the server is ...
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Running a Signal proxy server on the same Pi that runs my Nextcloud?
I would like to run a Signal proxy server as described on this blog post. However, I already have a Nextcloud installation running on port 443 of the Raspberry Pi that I would also like to use for the ...
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Some apps in WSL are inaccessible from the host OS while others are accessible on the same ports
I've got Ubuntu in WSL 2 running on Windows 10 (Version 10.0.19044 Build 19044) host OS.
Windows Defender Firewall is fully disabled.
What does work
A very basic Express app index.js:
const express = ...
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Openvpn server forward all ports to the client debian 10
Openvpn client is connected to openvpn server and I would like all port be forwarded to openvpn client Could you give me commands for debian10 with I can do this I am new ...
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Netns namespaces not isolating ports from being shared between host/global namespace and the created namespace
I run dnsmasq instance on netns exec namespace mine, it says port 53 is in use. So netns doesn't isolate ports even though it isolates interfaces and therefore IP address. I want it to isolate all ...
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VNC Server port is already in use
I'm on mac, my vnc server says the following:
The port on which VNC Server is expecting to receive direct
connections is in use by another program or service. For example, it
may be that VNC-...
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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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Any cable can help me with both display and transferring mouse receiver?
I have a monitor with all the ports listed like this:
My laptop ports are in the photos below:
On my laptop, Port 1 is USB 3.2 Gen 1 port with PowerShare
Port 2 is Thunderbolt 4.0 port with Power ...
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I think I damaged the USB ports on my Laptop
My Laptop model is an Acer Predator Helios 300 G3-572.
I tried using my USB HUB with a Power Supply, but I didn't notice the power supply was 12V.
After connecting the USB HUB, my Laptop shut down. It ...
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Is it possible to forward a IPv6 port from loopback to a network interface and make the port reachable in a guest (peer)?
I know that there is no sysctl flag called "net.ipv6.conf.all.route_localnet", so that, IPv6 ports from loopback interface cannot be forwarded to a subnet.
I tried to bypass this issue by ...
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i can not acccess to my modem through the pc
I have a Huawei E5573Bs-320 modem
I'm trying to connect it to a PC, but it does not work. I found the modem in a CD ROM section, not in the port, So I think I need the right driver to make it work. I ...
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What is the point of registered ports? [duplicate]
I am developing a system which requires client/server communication, having read some of the IANA documentation it states:
The Registered Ports are assigned by IANA and on most systems can be used by ...
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Convert USB 3.0 to current of USB 2.0
I have a USB device that only works with USB 2.0 ports. The reason it only works with 2.0 ports is because when it is plugged into a 3.0 port, it draws all 900 mA available to the 3.0 port and fries ...
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Can't connect to smb-share from specific other networks
I created a smb-share (HDDs Raid1 plus a Cache-SSD) on my Linux-server, and opened a port to connect to it from everywhere via a DDNS service. Everything is working fine, I can connect to my share ...
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PowerShell command "test-netconnection <address> -p <port number>" fails with any port
[Articles like this one][1] and [this one][2] show how to use Telnet or PowerShell to test if a port is open. When I try, both methods fail (time out), not only with special ports that I have opened ...
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Port 80 and port 443 open for two IP addresses
I have Asus RT-AC86U router and IP addresses:
One IP address is for Home Assistant in a VirtualBox.
The other IP address is for Nextcloud on Raspberry Pi 4.
I need to open ports 443 and 80 for both ...
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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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Do SSH clients use ephemeral ports?
Dumb this down for me, I'm still learning.
SSH sessions are created over port 22 (assuming well-known configuration) on the listening side, but is the same port used on the client side? Or are ...
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Port forwarding not working as expected
Im running a laptop connected to a router connected to the internet.
Public ip of the router is not one of the ip's used for private networks (https://en.m.wikipedia.org/wiki/Private_network), and Im ...
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Can't connect to remote SSH server, port 2222
I have problem with connection to remote server via SFTP from my MacOS, tested in FileZilla. Terminal SSH connection with same user&name (or key) works correctly.
open "user@server_ip
...
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