Questions tagged [port]

Port is a generic term that can refer to port number (software related term), and computer hardware port. Here, questions referencing this tag refer to port numbers.

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51 views

Nginx - Add new port for websocket

I'm using 2 websockets: one is running on default port (3000) and all is working fine. But now I want to add a new websocket listening to port 81. Here is my current config: # Redirection server { ...
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Cannot bind port 111 on docker on WSL2 on windows, but port is (apparently?) currently free

Setup I have this setup: Windows 10 pro with WSL2 with an Ubuntu 20.04 inside. Inside the Ubuntu, I have a running docker engine that has been working perfectly for over during months, exposing ...
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Set up fallback page for when docker is down

My web-application comes in docker-containers an gets started with docker-compose up. The setup exposes it on port 80, the rest happens inside the containers thanks to traefik etc. If I start it on a ...
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Docker container with multiple macvlan for specific ports

I'm using macvlan for my docker containers to make them accessible for multiple subnets. But I'm looking for a way to specify which port is accessible on which subnet?
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Allow Altering of COM port settings by domain user

How would one allow a normal domain user, to alter serial com port settings. On local com ports and usb based com ports. To setup things as stopbits crc etc. I don't know what policy or registry ...
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Binding to a port inside of Amazon EC2 instance

I want to send some data from my local machine to my EC2 (t2.micro, Linux) instance running on AWS. Inside the EC2 instance I have a python script that opens up a specified port, listens for incoming ...
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Browsers won't connect to localhost on ubuntu

I am making a simple, custom server (server.c) on my ubuntu platform, and am trying to get a browser to open up an html file (the html file is stored in the same directory as my server.c file), via my ...
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Active mode vsftpd configuration

i have a question about vsftp please ! if i use active mode for my ftp server , should i see that my vsftp server is listening on 21 and 20 port when i use netstat ?? when i test sudo netstat -lnp | ...
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xinetd how to activate sshd service on custom port?

When I try to run ssh service in xinetd with customized port (port=2211) it shows me this error: xinetd[16783]: Service ssh expects port 22, not 2211 If I change port to 22 in xinetd it works fine ...
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Why is my server using a well known port as source port

Is it normal that my server is requesting 8.8.8.8 dns with 22/udp as source port? How can i get it to use unregistered ports only
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OpenVPN routing only some ports while others use connectors IP

I've setup OpenVPN on server and configured it so it relays IP of the server for access. But I've done it so that IP is for everything. I checked with tracert and hops indeed go thorgh server and on ...
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Port Forwarding over VPN

I have a site that is behind CG-NAT that stops me from being able to easily open ports. I have setup an openvpn server on a digital ocean droplet and have pfsense onsite configured to connect to it. ...
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How should I deal with this specific abuse report?

Today , I have received an abuse report for one of my servers which is a CentOS 7 server with OpenVPN installed on it and it's using iptables firewall . The abuse reports basically says that a VPN ...
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what to check when can't connect the port of Squid proxy server on remote server

I want to connect from local pc(Windows10) to the specific port on the remote server(Windows server2019). The port is of Squid proxy server. But, I tried checking with PowerShell command on the local ...
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Connection refused on port 8088 Apache Superset

I have an apache superset instance running on a remote server on port 8088: INFO:werkzeug: * Running on http://127.0.0.1:8088/ When trying to connect to the server with servername:8088 I get a ...
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All traffic on port 5060 gets lost in whole network

I am having issues forwarding port 5060 in my firewall/router to a FreeSWITCH server. Our firewall/router is an Uniquiti Edge Router X. The server's local IP is 10.0.0.216, the router's 10.0.0.1. ...
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Thunderbird 'wrong site' error for SSL certificate in port 465

I started to use Thunderbird. While sending emails, it gives an error saying that Sending of the message failed. Unable to communicate securely with peer: requested domain name does not match the ...
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502 error from nginx. It doesn't seem to be listening to any port, but will connect to default

Facts: Nginx default can be accessed. Gunicorn is running, the website can be accessed via LAN. Nginx runs, does not give me any errors. When I check sudo lsof -i -P -n | grep LISTEN , it tells me ...
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Can't connect to FTP from external machine

We are trying to create an FTP site on our Azure VM. Here are the steps we have taken: From the VM From Server Manager we added new features. Web Server (IIS), FTP Server, FTP Service From IIS we ...
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SSH Port Forwarding not working on remote server

I am trying to SSH into a server for testing an API. I had been working on it for the past 2 weeks, and it was working fine. No issues as such. The command I was using to ssh was: ssh -L 8000:...
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How can i access my ip:my port [closed]

I'm trying to access a specific port (which is 3000) on my server, I can access to localhost:3000 and I can access 192.168.1.111 (my local IP) but I can't access 192.168.1.111:3000 although I'd added ...
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Cannot connect to my site with apache over port 81

I have two sites and I want to run them in the same IP but in different ports with Apache. I modified ports.conf file as follows: NameVirtualHost *:80 Listen 80 NameVirtualHost *:81 Listen 81 and the ...
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Port negotiation issues, IP Radio tower

Got a ubiquity IP radio on a tower. One side of the link negotiates 1G but the other side has issues. It will negotiate 100Mb after a reboot every now and again (very random) but mainly sits at 10Mb....
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Port 25 won't open on Digital Ocean droplet [duplicate]

I’m trying to set up an email server. I can’t seem to get port 25 to open for me. I literally just did: ufw disable ufw reset ufw default deny incoming ufw default allow outgoing sudo ufw allow 22/...
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nginx reverse proxy does not want to redirect to certain port

i am trying to redirect from nginx port 8100 to 8069. i have apache2 running on 443 and 80. No matter what i try as a proxy_pass i always end up on port 443. pi@nextcloudpi:/etc/nginx/conf.d $ sudo ...
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VoIP and NAT (and blocked ports)

I'm making a VoIP application and I have trouble to make it working properly. On each side there are SIP clients. In my office, we use 2 differents boxes to access internet. The first one is like a ...
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Web app on a VPS. How to make it appear on a subdomain?

I'm using a personal VPS (Ubuntu 20, Apache2) to host a web app. Currently there are 2 static sites, site1.com and site2.org, both working. I installed an app that is currently available on port 8065, ...
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How to redirect a port and use a subdomain?

I know my problem has already been described (see How do I redirect subdomains to a different port on the same server? for ex) but as I can't make it work on my side, I ask for some help again. I have ...
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Adding inbound rules doesn't open port

I am having trouble with allowing ports to open through windows firewall. I have set inbound and outbound rules for the port 19132 and port forwarded on my router however the port does not open when ...
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Redirect host's vpn traffic to vmware image

We are using OpenVPN for VPN connectivity. Remote machine: 172.27.232.2(VPN IP) - Ubuntu 19, Host machine: 172.27.232.16(VPN IP) - Windows 10, Guest VM image: Windows 2008 Server I have a Windows 10 ...
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2answers
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How to manage large number of ports?

I'm running a lot of services (most of them are docker-managed). I struggle with managing port numbers for all of them. The problem arises when I want to spin a new e.g. HTTP server. I have to look ...
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Getting more than 65535 ports using multiple static IP's on AWS

I run a service that needs more than 65535 ports and I use an AWS VPS I was thinking what if i attach more static IP's to that VPS, would each of those IP's get 65535 ports whilst being connected to ...
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How to stop Implicit Source Port Mapping?

I've got an embedded Linux device that needs to forward some broadcast packets to another embedded device that is part of the assembly, connected with a dedicated ethernet interface. Only the Linux ...
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2answers
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Using ports on business firewall

I have question regarding network architecture with very close view on FW device port usage on business firewalls like Zyxel ATP800. For example, this FW has 12 customizable ports (WAN,LAN, etc) I ...
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How do I find out why certain ports are excluded and delete the exclusion?

After a recent Windows update I can no longer listen on port 1433 (I have SQL server running remotely and tunnel to it). After much googling I found the reason is that those ports have been "...
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mail can be send and received from outside network but mail (outlook or webamil ) not accessible from local network

my private block is 192.168.109.0/24 WAN is 82.198.x.x. and mail server is on 192.168.109.x. I have made the rules dst-nat for port 25,587,993 and 143 with destination 82.198.x.x forwarded to the mail ...
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Cannot connect to port 5432 locally even though it is allowed by UFW

I'm trying to setup my server so that port 5432 (Postgres) is accessible only from localhost. So I've denied everything, and added back port 5432, however I cannot connect to it. Here is my UFW config:...
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MMC > Certificates > Other computers: Which firewall ports used for this?

I am having a windows firewall issue when trying to access the Certificate Store from another computer on the same domain using MMC or PowerShell. I am logged in as a domain admin. Both servers are ...
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108 views

Can access ssh, cannot access from browser

straight to the question, i was been provided a server by our clients with ip x.x.x.x port 2215 to access it by ssh. Therefore i upload all my website to /var/www/html folder. Because i lack of ...
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Connection refused on remote (sles) server port, even though inside that server port shows as open

When trying to connect to port 7077 to a spark cluster via pyspark in Python, I get Connection refused Error. Running nmap server_ip from my local machine (Ubuntu 20.04) shows 4 open ports (80, 8080, ...
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1answer
51 views

Azure - Allow incoming traffic on specific port

I am running a NodeJS app on port 5000 on an Ubuntu 18.04 VM on Azure and I need external access to that app. I created the inbound and outbound rules and double checked the settings based on this ...
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321 views

Why is varnish not restarting after I change port

Solved. See my solution below My system: 1. varnish 6 2.Centos 7 controlled on cwp pro panel, 3.webserver configuration: Nginx & Varnish & Apache ([Varnish Conf]) Additional Options: php-cgi/...
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1answer
514 views

Kubernetes and iptables: forward external traffic to specific nodePort

I have installed kubernetes on EC2 environment. I want redirect traffic from external port 6600 to 30000 as nodePort. I'm using iptables to do this (cmd below) but this not doing redirection. I have ...
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218 views

Serve ports through URL using lighttpd

Settings and goal On a raspberry pi, I'm running a Lighttpd server (version: lighttpd/1.4.53 (ssl)). This server was initially installed by pi-hole, a DNS I'm starting to use to manage my network. I ...
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Why two TCP connections to mysql server?

When I connect to a mysql server via a client, it seems to create two new TCP connections each time, for example doing: $ netstat -a |grep mysql # tcp4 0 0 lmy.att.64710 ec2-54-00.mysql ...
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port mapping didn't happen for a container deployed on AWS ECS(uses EC2)

Context: I am using Circle CI's aws-ecs/deploy-service-update orb to deploy my docker container by pulling the latest image in AWS ECR and deploy it in AWS ECS with AWS EC2 instance. This container is ...
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On Amazon EC2 a JETTY server suddenly does properly connect, the weirdest thing

I have been doing the most complicated IP tricks in my life before, so I am by no means a newbie. Now I have an extremely weird situation. I have a system that I replicated dozens if not hundreds of ...
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Should Router Firewall be deactivated when forwarding ports?

I'm trying to understand how a router's firewall works when ports are forwarded. As an example, I have vlc running on an ubuntu server in a remote location. I've setup VLC to stream content from my ...
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297 views

Adding multiple outgoing IP addresses in Squid with different ports [duplicate]

I have a Squid proxy server running on CentOS 8, the server itself was supplied with an additional /27 subnet. The problem I'm having at the moment is that all outbound connections seem to be going ...
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1answer
223 views

How do I limit simultaneous connections to a port with UFW?

I see many articles regarding brute attacks, number of connections per N seconds, but in my case is different, i have a proxy server and i just want to limit connections from anywhere to 1 at the time....

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