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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Magnetic card reader do not function when computer starts up until unplug /replug
I have a Magnetic card reader that do not function when computer starts up until unplug /replug. before unplugging the computer do not show the device in device manager at all eventhough green LED on ...
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Ncat inside WSL2 not behaving correctly
I have an instance of kali linux running in WSL2 on Windows 11. It is configured to use mirrored networking mode, if that is relevant. Typically, if one were to start listening on 127.0.0.1 on any ...
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Windows Security History - Where did Windows' security holes begin? [closed]
I'm interested in learning more about Windows security, specifically vs. most closed systems like Linux, and it struck me in my research that 'Windows' has been around as the technology around it has ...
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I have an iMac that I want to use remotely, how to setup a port forwarding to access over SSH [duplicate]
I use termius and I want to setup a port forwarding to use remotely my iMac over SSH. I want to have a setup like that :
iMac => WebServer => SSH => My pc
Note that the Web Server has not the ...
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Filezilla Server and Client Port 21 enabled?
I wanted to ask if it's enough when I enable the Port 21 on the Filezilla Server or if I also need to enable Port 21 on Filezilla Client?
I set up Filezilla Server on my PC, added a User group with a ...
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iptables port REDIRECT works locally but not from outside
I have a server that can only listen to port 23006. I want to access it from outside and on port 443.
I have systemctl setup:
$ sudo sysctl --system
* Applying /usr/lib/sysctl.d/50-pid-max.conf ...
* ...
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1
answer
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How does remote users connect to a device on a local network behind NAT without port forwarding or VPN? [closed]
How would someone at tech support for a product (assume for now any generic ethernet/wifi connected device) remotely access the device needing troubleshooting when the device is connected to a local ...
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YARN resource manager "HTTP request sent, awaiting response..."
we have Hadoop cluster with active/stand by resource manager services the active resource manager is on master1 machine and the stand by resource manager is on master2 machine
in our cluster YARN ...
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Ping varies on different Ports with the same IP (Gaming related)?
I apologize if my question is "dumb" and not in the right category, I'm new here and I am genuinely curious about it.
Recently, there have been numerous complaints from users of the game ...
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Which ports to open on the firewall for this FTP client connection?
I'm using for the first time today https://github.com/veeso/suppaftp and I'm super happy.
On my local machine everything works.
On production machine it does not.
On production machine there is a ...
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Bind different instances of a program to different Eth/Usb ports (Windows)
For my job I connect a target system to my Win11 laptop via Ethernet cable, then analyze it with 2 proprietary programs. I often analyze multiple systems per day, so I'm looking for a way to do them ...
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How to access a folder inside of WSL remotely on another linux machine?
I have a NAS setup inside of WSL. The easy part was the server. For what ever reason Windows or Linux doesn't want to play nice with the rest of the network. I was able to get samba working inside of ...
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Creating a list of physical locations in intranet
For the intranet of my workplace, I have inventory data including Netname and location within building of our PCs. I would like to create a list of network wall sockets with location in building, so ...
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Change IPSec IKEV2 VPN Default Ports 500 & 4500 To Anothers
For some reason OpenVPN is working on my local machine very well, But IPSec IKEV2 VPN not & it only works when OpenVPN is connect.
I have a domain for IPSec IKEV2 VPN & in local machine vpn is ...
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Port forward page not showing on ZTE H288A
I have Orange router ZTE H288A and it must show "Port forward" page in internet > security
enter image description here
it should show it here but its not.
I will be very thankful if ...
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Can not connect to the FTP (hosting) - Windows - port 21 issue
Here is the weird problem I have. I suddenly can't connect to any of my 2 FTP (hosting servers) (port 21) through my Windows 10.
It took me two whole days now, and I just can't find out, where the ...
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External port checking services claim my port is closed even though I opened it
I have a FRITZ!Box 7590 and I opened some ports for GTA online for two computers as adviced by rockstar games.
But if I check the port online, then it says it is closed.
I have GTA online running in ...
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Can i scan a website in nmap?
The Nmap command i wrote: nmap -A -Pn -sS -T4 -p 1-65535 <my_website_domain>
and the result is shown WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up)...
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113
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Understanding how ports work and how are they different from processes?
I've been a part of a network operations team for quite some time now and was extracting a certificate using this command:
openssl s_client -connect <IP>:<PORT> </dev/null | sed -n -e '/...
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Port Forwarding is not working [closed]
I want to be able to connect to my Raspberry Pi either via ssh or through connection like server-client from WAN which I think I need to do with port forwarding which is what I'm having problems with.
...
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What is the “down” service at port 2022?
According to NMAP and IANA port 2022 TCP belongs to the service down:
PORT STATE SERVICE
2022/tcp open down
But what is down? I cannot find anything about it. Is there any document explaining ...
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Home Network - Port open, Firewall rule set - still unable to connect
I'm trying to setup a Minecraft Server for the Kids to play on and ensure no adults can interact with them.
I followed the tutorial on how to install it and it seems to be up and running. I just can'...
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My keyboard repeats the keys even though I haven't released it
My keyboard repeats the key even if I don't release it.
When I press a key, my keyboard "drops" it and repeats it again, making it difficult to type or play video games.
I tested my keyboard ...
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Can I use this SSD on this motherboard
Recently I bought a Western Digital SN570 1TB NVMe Solid State Drive. I currently have an ASUS P8B75-M motherboard which support my SATA SSD. However I am not sure if this SSD will go with my current ...
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USB port from Host device is not charging the charging cable is getting hot and burnt colleagues laptop
USB host device has an HSD connector, which is connected to USB 2 port with a length of cable about 2 meters.
When I connect my phone for charging, I can feel the USB cable get hot and phone does not ...
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276
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MySQL Docker container on Plesk isn't accesible from the exterior
I'm trying to set up a MySQL database to use it externally. I have a Ubuntu server with Plesk and Docker.
The main problem is that when logged in the server the port seems to be used/open, but ...
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333
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Do I risk damage my usb port when connecting two laptop using regular phone cable (usb A to usb C)
So my friends requested some files from my laptop, as he seat next to me, he hand me his phone charger cable (similar to what the picture shows)
I connected the usb A part to my laptop, he connect ...
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Port is open and process is listening but server respond with ERR_CONNECTION_TIMED_OUT
I am forwarding external port 80 to local port 3000 that has Node.js listening and I have successfully configured DDNS in order for the client to be able to access a web app that I am currently ...
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Can’t port forward Sven Co-Op Unturned server but I can port forward a Minecraft server
Can’t port forward Sven Co-Op Unturned server but I can port forward a Minecraft server. I cant port forward these games, and I think I know why.
These games are UDP while Minecraft is TCP why cant I ...
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RPC Port-flapping in Active Directory
Have you ever experienced RPC port flapping in Active Directory servers?
In deploying an agentless server performance tool we experienced RPC connection issues that gradually opened up over a few ...
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Is it possible to force an application to connect to Internet via specific allowed UDP port?
If I execute :
netstat -tulpn
On an cachy (Arch derivative) distro, I find:
Not all processes could be identified, non-owned process
info will not be shown, you would have to be root to see it all....
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2
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linux + how to verify the dynamic ports allocation settings
How to know the range for the allocation of dynamic ports on red hat Linux machine
From Linux we did
sysctl -a | egrep "net.inet.ip.portrange.first|net.inet.ip.portrange.last"
but those ...
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1
answer
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How to reserve port number and avoid other applicationsto use this specific port number?
We have a Linux machine running RHEL version 7.9.
In this machine, we have installed the Ticktok service, which uses the port number 4590.
Sometimes the service stops and doesn't use port number 4590.
...
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1
answer
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How to start a script when there is incoming traffic on a specified port?
I'd like to automate the start of my mc-server when I am logged onto my computer.
I have registered a public DNS, which is available 24/7. There is nothing running on that domain though, as it is just ...
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Pptp port forward mikrotik
I am connected to a pptp server(mikrotik). My client is outside the local network of the mikrotik. I want to use my client to host a media server which I want to be forwarded through the mikrotik ...
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Why can two containers in host network namespace both bind to the same port?
I was working with Docker containers with --network host set and realized, that if I bind to a port in one container I can still start a second one which binds on the same port without any error ...
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How do I block port 1234 in localhost without killing the process in MacOS
I have a requirement to close a port without killing the process to test out a certain fallback scenario. I am using MacOS and I am unable to figure out how to do this, can someone please help?
I ...
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How to make local application accessible for other pc in my local network
I would like to host an application from a local Windows pc, for my local network
I have an ASP.NET Core application (running in debug mode) on Windows pc A (192.168.1.10) on port 5001
There is ...
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1
answer
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My Ports are always Occupied and no Software Shows why (netstat, TCPView)
I have this frustrating Problem that my programs cannot connect to their designated Ports.
I'm using a windows 10 machine and this is how my problem goes:
I open a software which needs port 5053 or ...
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1
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Repair RJ45 socket after plugging in RJ11
Background
My family member tried to plug a RJ11 into the RJ45 sockets on my modem and router. Now my internet doesn't work as well as it did before.
What I know
I read that that the RJ11 may have ...
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How to interpret Open | Filtered status of port scan?
I have Softether VPN server running on Windows 10 PC. My ISP offers me CGNAT (IP4) and GUA (IP6).
I have configured it to accept L2TP Ipsec with preshared key.
Now I am checking the open port status ...
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How to send emails without outgoing port 25 with Plesk and postfix?
I have a VPS server running Plesk with postfix and my IP is blocking outgoing port 25. Do you know how to set up my server to send emails from it? Can't some other ports be used for this?
I managed to ...
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3
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esptool.py PermissionError while configuring serial port
esptool.py v3.0
Serial port COM11
A fatal esptool.py error occurred: Cannot configure port, something went wrong. Original message: PermissionError(13, 'A device attached to the system is not ...
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1
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How to disable access to router login page from Internet?
I just got a new router Zyxel EX5601-T0. Everything goes well, except that I discovered accidentally that the admin interface of my router can be accessed by anyone on the internet. This has never ...
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1
answer
554
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Can't use SSH with any port except 22
I've been trying to change the port used by sshd on my Ubuntu 22.04 VPS (which I think I've succeeded in doing) but can't connect from my home PC if it is set to anything except port 22. I am using ...
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1
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How to find open port on specific IP address in Windows 10?
At work, we connected print-server to a printer via USB, to make a printer network-available.
Setting-up as network printer was successful, but at work, additionally we need to specify a port number.
...
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Vagrant VM lost port connection to host machine
Let me explain, I have a server on Ubuntu 22 where I have MongoDB running. In this server I created a vagrant vm where Ubuntu run with nginx and a python program.
I set the VM like this
Vagrant....
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2
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61
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Port scanners on local network
I currently run several servers for video games using two computers on my home network. Recently, I started seeing some anomalous IP's trying and failing to connect to one of these servers. After ...
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can i passthrough data from port 9001 to port 443 and viceversa?
im trying to connect my nas to the network. the problem is that i choose to create my nas with nextcloud running on Trunenas Scale running on Proxmox. the truenas-proxmox part is fine, each one has ...
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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 ...