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Questions tagged [ports]

Use this tag for Ethernet ports. E.g. IP:port.

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Defining Inbound and Oubound Policies in Windows Firewall,AV Firewall

In Windows Firewall we define Inbound & Outbound Policies for Web, Network, etc. access as we have separate settings for the same...The same if taken in an AV Firewall for example in Quick Heal ...
CrazyFirewall's user avatar
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Can you convert hdmi to usb for mouse and keyboard?

I recently have been playing around with an Arduino/motor/transistor etc. I got the motor working but the next day I found that all my ports had stopped working completely. The only ports that worked ...
Jay's user avatar
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Can't connect to sftp from second computer on the same network

i got a new computer and trying to connect to the same sftp that i've used for years, i used an ftp client and i got a new one, but i get refusal to connect. I tried connecting with terminal and also ...
julianlede's user avatar
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Trying to make PicsimLab communicate with com0com?

I want to use com0com with PicsimLab to write serial in a PIC18F452. I have downloaded com0com and configured it just like this:https://lcgamboa.github.io/picsimlab_docs/0.8.9/...
appliedSciences's user avatar
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lsof -i and nmap output different

To test my PostgreSQL, I had to find its port number. I ran two different commands to see what it is: nmap localhost lsof -i | grep postgres I was confused when the two commands returned different ...
Shawn M.'s user avatar
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is it normal to have open ports on your mac computers without any service using them?

I am scanning all ports on my mac machine using nc -z -v localhost 1-65000. I came across ports 62247 and 8021 that are open but with no services using them. I've tried lsof -i :portnumber but it won'...
james's user avatar
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How to see the percentage of ports being used by an application compared to the total number of ports available

Having some rare port exhaustion issues and was wondering if there is a way to see the number of ports being used by a single application. I would like to have it in a percentage-like manner but ...
Zarif Rahman's user avatar
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Trying to host a server port forwarding (Weird Error)

so im trying to host a Minecraft server to play with friends, i managed to open my ports and when i try to access to it though minecraft using my public address, the server does not load, stays on &...
1kgDeMedialunas's user avatar
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How can I find out which folder http://localhost:3000 points to?

When I open a windows 10 command prompt or powershell and navigate to a folder with a ReactJS app, then run npm start this opens up http://localhost:3000 in my default browser. What should happen is ...
Marc's user avatar
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Close Ports - Which ones and how?

I am wanting to close ports, to stop myself from been vulnerable to attacks/exploits What would be the best way to locate open ports on my computer and closing them to prevent such activities? Thanks
Worrieduser's user avatar
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Firewalld open all ports except one

With firewalld, I am trying to allow all ports except one for everyone, as that port must be enabled for a specific host, and I have tried the following: firewall-cmd --permanent --zone=public --add-...
jonyluke's user avatar
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SMB2 port range? Port 64663?

I'm copying files via the program Bvckup to a windows share. From a wireshark capture, I see that the operation uses TCP port 445 and SMB2 port 64663. I want to make a firewall rule, but I am ...
MojoDK's user avatar
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How to add a Windows Firewall ports to Printer using a Config File

I need to create a config file for Windows Firewall ports to printers. But I didn't get any ideas from the internet. If anyone knows can anyone suggest me.
Hariharan A's user avatar
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I see rlm-admin and tor-socks port opened on my machine should I close them?

I ran the following command to see what ports are opened on my machine i.e Ubuntu 21.10 x86_64 nmap localhost and got the following result Starting Nmap 7.80 ( https://nmap.org ) at 2022-01-15 16:25 ...
Khushal's user avatar
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https://localhost:443 becomes https://localhost

I launch a web application by sudo PORT=443 HTTPS=true ./node_modules/.bin/react-scripts start. Then, I run https://localhost:443/#/start in a browser. It does open the start page, but the url becomes ...
SoftTimur's user avatar
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Why should registered port numbers not be used as public ports? [duplicate]

Registered Ports (1024 - 49, 151) are port numbers that gets registered with IANA for public use. Assume I have a popular application like discord, running on some port using a different protocol ...
Allan's user avatar
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What exactly is a Registered port [ 1024-49151 ] and how to use it?

I've come across the below definition for registered ports, Registered Ports 1024-49151 are available for registration at IANA for more common purposes since they are available for regular users to ...
Allan's user avatar
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Port trigger - How to set up

What is best security wise, port forward or port trigger? What ports shall I put in "Port target" and "Port trigger"? CSGO uses, for example, 27000-27031 UDP, so does it open up ...
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2k views

How does docker port mapping work on windows?

As far as I understood, it uses iptables on Linux and it allows to forward traffic not only by ip but also by port. Now, in case of windows we have docker running in WSL2. Image name is docker-desktop....
Neir0's user avatar
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Same ports with different domains(subdomains) with different services(websites) on same server

Here is my setup: -RasPI static ip with 192.168.x.x resolving to my domain blah.xyz and port 443 open on my router forwarding to my Pi -Vaultwarden(bitwarden) running within a docker container using ...
Alex's user avatar
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3 answers
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How to Stealth Port 0 on a router

My Sagemcom F@st 3868 cable gateway (modem-router combo) has four devices on its LAN ports: a PC, a Hardware Firewall, a Cable TV Switch and a VoIP Adapter. The GRC Shields UP! test showed several ...
groucho43's user avatar
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2 answers
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Where is the port number listed in this command result?

I am running simple port scans on my system and I don't know if I am confused or not. After running lsof -i and my results are: COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME firefox-e ...
Rideboards's user avatar
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Unknown/unlabeled ports

I have been looking into some of the Modular/Hardware Configurable/Customizable laptops, I own two Compaq Presario laptops, and although I can name Every port and slot on one of them, the other (an ...
Cyber_64's user avatar
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How to identify actual service running on a port on a remote server via the terminal?

I used nmap on my target server which returns the following services PORT STATE SERVICE VERSION 53/tcp open domain? 80/tcp open http Microsoft IIS httpd 10.0 88/tcp open ...
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Can't Find Arduino Drivers Windows 10 Precision3560

I'm unable to upload anything to my Arduino Nano because it says it doesn't have the drivers for it. I've tried going to the Device Manager and going to the USB serial to "update" the ...
Andrew Hansen's user avatar
1 vote
1 answer
578 views

How to install and use scanlogd

I want to install and run scanlogd from my Ubuntu 16.04 machine. I am able to install and run it with apt-get install scanlogd and it works fine. But I am not able to change the parameters like log ...
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429 views

How are the FTP, SMTP, SSH ports used?

I know these are three questions, but I put them together because I think one connects with the other. I understand that when you want to send an email it's done using the SMTP protocol. Now port 25 ...
learn123456's user avatar
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1 answer
286 views

Connect PC to TV from VGA to HDMI

I have a PC unit with a VGA port to which I connect my monitor and it works with no problems. When I try to connect the same VGA port to the HDMI port from the TV (HDMI IN 2(DVI)) it doesn't display ...
OvidiuRo's user avatar
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1k views

How to Forward Specific Traffic Through VPN?

Before we begin, I must admit myself as more of a novice in the world of networking. Thank you. I would like to send specific traffic through my VPN, through a local machine, or through WSL. ie. ...
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How to set different TTLHOP for TCP ports

We want to set sensitive TCP/UDP Ports at low TTL/HOP Leaving other ttl/hop at 128 default data center = 3 Priv net = 8 Internet = 128 default Ssh 22 = 8 (internal hop max) Rdp 3389 = 8 Http 80 = 128 (...
Bill Alderson's user avatar
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2 answers
756 views

Connect to linux outside network without port forwarding

Currently I am running Lubuntu 19.04. Right now I am using samba to share my files on my local network ( anyone connected to my network can access the files ) Is there a way to access my files from ...
Ammar's user avatar
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1 answer
683 views

Allow application to bind to port 80/443 on Windows

I really really need to allow an application to bind on port 80 and 443 on Windows. I understand that this is somehow blocked by http.sys. Is it possible to disable http.sys temporarily so this ...
D.R.'s user avatar
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172 views

Is there a way to connect it to the PC without using direct serial port (or parallel port)?

I want to connect a sensor to my PC (MPU-9250 Nine-Axis (Gyro + Accelerometer + Compass) MEMS MotionTracking™ Device). I know that in the device drivers list there is the category "Sensors" (...
Adryzz's user avatar
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0 answers
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If I am using a VPN and using p2p with specific open ports, does the VPN server have these ports open too?

If I am using a VPN and using p2p with specific open ports, does the VPN server has to have these ports open too?
Hosa 's user avatar
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1 vote
1 answer
196 views

Why do most application protocols have two ports assigned?

So I am trying to learn about the application layer in the OSI model and when I go to the IANA website, I notice that most of the well known protocols have same port assigned for TCP and UDP. For ...
akellas's user avatar
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host mutliple servers on the same port?

Okay, I have two physical computers on my one network, they are both running CSGO servers. Let's call them Server A, and Server B. Server A and Server B are both set to bind to the same port. But, ...
syn's user avatar
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1k views

IP camera streaming to app without any open ports

I have three no-name ipcameras that I have been fooling around with. Previous ones came with a webserver that used UPnP to make them accessible outside my home network. These ones use an app, but I ...
jeffpkamp's user avatar
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1 vote
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469 views

Windows 10 VPN host does not accept connections

I've been trying to setup the VPN hosting in Windows 10 Pro. On the VPN host setup New Incoming Connection added dedicated user for connection specified acceptable IP range allow clients to assign ...
autobottodoggo's user avatar
3 votes
1 answer
2k views

Docker container available in browser but not in curl

I have a running gitlab container. The run command: sudo docker run --detach \ --hostname gitlab.domain.com \ --publish 8888:80 --publish 2222:22 \ --name gitlab \ --restart always \ --...
Andrej S's user avatar
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1 answer
891 views

connecting linux computer using vnc

I'm trying to connect to a linux computer using a vnc viewer, but the connection times out. when I type netstat -na, none of the ports listed are 5900, which as I understood is the one VNC uses. Is it ...
Einat's user avatar
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0 answers
103 views

iptables on Ubuntu18.04 doesn't filter when changing default-action to DROP

I am facing a issue on a freshly set up Server in the Hetzner-Cloud running Ubuntu 18.04 LTS. After installing Iptables(-persistent) and configuring the following ruleset: root@inetsec:/home/linus# ...
linzus's user avatar
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1 vote
0 answers
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Installation new domain controller throws error about used ports (88)

When I configure my server as the first Active Directory domain controller in a new forest in Windows Server 2016 I get error as below: Verification of prerequisites for Domain Controller promotion ...
Wallers Jason's user avatar
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1 answer
885 views

Port Forwarding Port 80 to PS4 - what about other devices on port 80

I would like to forward several ports, including port 80, to my husband's PS4 for gaming purposes. On our network I know that there are a few other devices using port 80, notably a nanny-cam. These ...
candez's user avatar
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0 answers
939 views

Cant access open ports on local network including server, but can externally

I have recently purchased a new server, I have a pretty infuriating problem where ports that I open are accessible to external devices but can't be accessed by any device on the local network and even ...
TheWebDev's user avatar
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1 answer
766 views

assigning com ports to usb ports of a usb hub

I am starting to automate my lab and for that I need to connect 8 devices to my computer (not enough USB ports). All of them can communicate through a virtual com port. My question is that if I ...
Muhammad Assad Arshad's user avatar
0 votes
1 answer
1k views

What are the risks of hosting my own website with WAMP?

I already know everything I should do to, but most of the guides out there just state that opening port 80 is very risky. What are those risks, in practice? I would use WAMP and WordPress, do they ...
Kodeeo's user avatar
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0 votes
1 answer
23 views

Anyway to connect A/V cables to a laptop?

I want to connect the red, white and yellow A/V cables from an A/V camera receiver to my laptop so that I can cast the video from the camera to my laptop screen. But there are no A/V ports in my ...
Somanna's user avatar
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1 answer
250 views

Setting up a SSH jump host for forwarding?

I am trying to configure a machine, B, as a proxy which means that incoming ssh connections get silently redirected to another host, for example C. As the guy who initiates the connection all I have ...
Kyu96's user avatar
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227 views

Attempts to publish RabbitMQ data seem to be blocked

I am using RabbitMQ for syncing data between two applications. These applications reside in 2 different countries—the U.S. and China—and RabbitMQ is being accessed from both the locations. Sometimes ...
Basant Gaur's user avatar
16 votes
1 answer
5k views

What computer port is this? [closed]

My Lenovo X1 Carbon (6th gen) supposedly has a MicroSD card reader. But I have never had to use a MicroSD card reader before and I couldn't identify this port. I tried to put the microSD card in, but ...
Jessica's user avatar
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