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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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 ... * ...
0 votes
1 answer
43 views

What could be the cause of multicast on Ports 3289, 22222 and 10004?

I've recently been monitoring my home network traffic heavily (using Netflow). Today I noticed some odd multicast coming from a Windows 11 laptop (it was left on, but unattended). I have AVG and ...
7 votes
3 answers
38k views

How can I map a domain name to an IP address and port?

I want to give a domain name to the IP address and port for an application in Windows 7. For example, test.com should map to 127.0.0.1:59873. Is there anyway that we can do it by using a web server ...
0 votes
0 answers
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Block MQTT port from windows firewall

I want to block any MQTT transaction from my laptop. I am using port 8883 as mqtt port as i am using TLS. I tried to change the firewall outbound rules and added a new rule to block the connection for ...
0 votes
0 answers
16 views

SSL/HTTPS based on port instead of subdomain?

I have my home server setup with many docker services running on a VM. I have like 10+ services. Up till now I've had all of them running locally with no SSL authentication. I access them through a ...
0 votes
2 answers
40 views

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 ...
1 vote
1 answer
4k views

Opening port 3000 EC2 Amazon web services

I am trying to use nodejs and socket.io to deliver a webapp, which use websocket on port 3000. I have opened port 3000 on my EC2 instance in my management console by adding the inbound TCP rule to ...
0 votes
1 answer
6k views

Port forwarding service conflict with an existing port forwarding rule offering Any service

I am trying to add a port forwarding rule to my router that will allow a webcam and a 3d print server to run so that I can have remote administration. I am getting the following error service ...
1 vote
0 answers
30 views

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 ...
0 votes
1 answer
5k views

Trouble printing over the internet through router to private network

I am trying to send a print job from anywhere to a home network via its public IP address (I tried with and without a port number added ex. 40.230.2.2:9100), normal port number for RAW being 9100. I ...
0 votes
1 answer
6k views

Port forwarding on Parallel Desktop

My situation is like this. I have a Windows 7 VM run by Parallel Desktop, on which I run ASP.NET on localhost:1240 (Visual Studio development server). Is it possible from my host machine (OSX 10.9) to ...
0 votes
2 answers
4k views

How could I check if my pc is accepting traffic from specified IP?

I need to check if a server is accepting incoming traffic from a specified IP. Isn't enough to check only if a port is listening, because for example, even if I have port 22 open I don't know if it ...
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0 answers
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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 ...
-1 votes
0 answers
21 views

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 ...
483 votes
16 answers
1.1m views

Test if a port on a remote system is reachable (without telnet)

In the old days, we used telnet to see if a port on a remote host was open: telnet hostname port would attempt to connect to any port on any host and give you access to the raw TCP stream. These days,...
0 votes
1 answer
5k views

Why does my router have an HTTP server on port 5555?

I just did a port scan using nmap on my router (a Netgear WNDR3700) from the LAN side and found these ports to be open: PORT STATE SERVICE 23/tcp open telnet 53/tcp open domain 80/tcp ...
0 votes
0 answers
57 views

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 ...
0 votes
3 answers
6k views

Port Forwarding for RDP

I'm trying to setup Remote Desktop on my computer. It's currently running Windows 7. RDP is set to allow for incoming connections. I've followed the instructions at PortForward.com, but am having no ...
2 votes
1 answer
146 views

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 ...
5 votes
1 answer
4k views

Ports can't be used even though nothing is on them

My Windows 10 computer keeps getting stuck in a state where many ports are unable to be used, but when I try to find and kill whatever is using the port I can't find anything. Restarting my computer ...
0 votes
0 answers
31 views

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 ...
1 vote
1 answer
52 views

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 ...
1 vote
0 answers
88 views

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 ...
1 vote
1 answer
6k views

Find the com port of a specific device on command prompt

I know we can find it out from the device Manager under ports. But I want to be able to get this info on command line so I can incorporate it in my python script. I looked at tools like WMI, Devcon. ...
0 votes
1 answer
4k views

git clone Error: ssh_exchange_identification: Connection closed by remote host

gitlab9.3.9 upgrade to 11.9, git pull OR git clone don't work My surroundings: docker-compose.yaml web: image: 'gitlab-ce:11.9.1-ce.0' container_name: gitlab_web restart: always ...
1 vote
1 answer
7k views

Cannot open port 1883

I am trying to connect to a MQTT Mosquitto server by using a laptop with a wireless connection. However, I am getting timeout messages all the time. After doing some research I have come to think that ...
0 votes
1 answer
7k 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: ...
0 votes
3 answers
4k views

Secure FTP Port between Filezilla and Godaddy

I recently upgraded to Filezilla 3.0.x I am getting "filezilla error: Failed to retrieve directory listing godaddy" errors from Filezilla which i believe is because of a blocked port on my firewall ...
2 votes
2 answers
10k views

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 ...
0 votes
2 answers
161 views

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 ...
0 votes
0 answers
58 views

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 ...
1 vote
2 answers
6k views

yum + connection refused

I can install the ntp rpm as the following by yum but before yum installation I get the failed lines as the following: yum install ntp Loaded plugins: langpacks, product-id, search-disabled-repos, ...
0 votes
3 answers
1k views

Should a port scan from the WAN side return any open port on a new router (TP-Link ER6020)?

I purchased a new router (TP-Link ER6020), turned it on and connected my computer to it. The router is running in NAT mode, I did not change a setting (despite providing dsl authentication details). ...
3 votes
1 answer
11k views

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....
0 votes
0 answers
126 views

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 ...
0 votes
0 answers
104 views

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 ...
3 votes
1 answer
9k views

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 ...
1 vote
2 answers
6k views

The port 55283 was occupied" errors comes whenever I use ShareIt

Today I installed ShareIt Windows software from ShareIt official site. Software installed correctly without any issue, but when I opened it, I am getting prompt "The port 55283 was occupied". I want ...
6 votes
1 answer
40k views

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 ...
0 votes
1 answer
7k views

How can I close an open port on my router?

I have a ZTE ZXHN H168N V3.1 router. I did a random network scan on my ESET Internet Security and it says I have an open port 23, which is caused by poor configuration of the router. I checked my ...
1 vote
2 answers
3k views

How can I remap outgoing TCP ports?

Is there any way to remap a TCP port from a program were you not can change the port number? The program talks on port 4321 and I want it to go out on port 14321 on the local computer.
0 votes
2 answers
106 views

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 ...
1 vote
1 answer
40k views

What is the All 1000 scanned ports on X are in ignore states in NMAP mean

We are using the NMAP 7.92 version. When we run: nmap -sT XX.XX.XX It returned: Nmap scan report for XX.XX.XX.XX Host is up (0.31s latency). All 1000 scanned ports on XX.XX.XX.XX are in ignored ...
0 votes
0 answers
374 views

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)...
1 vote
2 answers
483 views

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), ...
0 votes
3 answers
137 views

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 '/...
1 vote
1 answer
104 views

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. ...
1 vote
1 answer
24k views

port forwarding - Transmission torrent client

I have a problem related to Transmission torrent client. Specifically on a Fedora 23 Linux distribution. My goal is to increase download speed and surfing on the internet. I found out the best way to ...
0 votes
0 answers
198 views

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 ...
0 votes
0 answers
84 views

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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