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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Windows server 2012, unable to access site in some ports from outside

We have our website hosted in a windows server 2012 server. Some staging sites are also hosted on same server in different port numbers like 5015, 5014. Now I wanted one more site to be added and ...
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1answer
14 views

Listen to multiple ports only apply to localhost but not external ip of the server

I am running apache on google compute engine and I follow the step here : http://www.groovypost.com/howto/apache/configure-apache-web-site-to-use-multiple-ports/ to enable my website to accept ...
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2answers
19 views

Check on Linux certain port is occupied

I'm writing a script that will spin up server that want to use certain port number. In some occasions this port is occupied. I want to know how to check it in bash so I can react in proper way. How ...
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30 views

Haproxy Nginx : How not to forward the local port?

I have haproxy which listening on ports 80 and 443 and behind Nginx listening locally on ports 8000, 8001, 8002 etc... By default, all works fine but when an application web made a redirect 301, it ...
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Ports aren't really getting blocked with iptables

I'm on Ubuntu 14.04.4 LTS, I'm under attack from some ports, I blocked all of ports except SSH in my own server, I'm doing that by this way: iptables -F iptables -P INPUT DROP iptables -P OUTPUT DROP ...
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1answer
25 views

Port Scanning Large Sets of Targets

1)How would you check to see if a list of ~10000 IPs if they have port 80 open? 2)How would you go about the same scenario but with a port range? 3)How would you check a list of 10000 IPs to see ...
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1answer
5 views

PID 4 Using Port 80 - IIS Unable To Bind

So I've been having a problem where I can't use localhost:80 on IIS So I ran this: > netstat -ano | find "0:80" And got: TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 ...
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21 views

ethtool doesn't show speed

I'm trying to display my servers link speed / port speed and it's not allowing me to see anything.. ethtool eth0 is only displaying the output root@computeapi:~# ethtool eth0 Settings for eth0: ...
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1answer
32 views

How to redirect my request from port A to port B? [closed]

I got a server running on port A, but my network infra only allow port B can be opened to communicate with outside world. Is this possible to receive request via port B, and transfer the request to ...
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1answer
32 views

Unable to SSH to AWS on home network?

I am not exactly sure if this is the right place. I have an AWS EC2 instance which I am trying to access using putty on windows 7. I have been doing it using my phone hotspot successfully. But it ...
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1answer
59 views

How can I open ports in my dedicated linux server? [closed]

I tried using csf using this tutorial. But I am getting some error as below related to iptables. root@s104-238-95-3 [/etc/csf]# perl /etc/csf/csftest.pl Testing ip_tables/iptable_filter...OK Testing ...
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1answer
32 views

Unable to find a process id [on hold]

I have an app in Erlang which I fail to launch: "Protocol: ~tp: the name my_app@my_comp seems to be in use by another Erlang node",["inet_tcp"]} I've tried to figure out the PID of the Erlang to ...
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17 views

How to configure a USB virtual port interface on Windows-7

I have an embedded board with a USB output, which is plugged into Windows-7 desktop. I installed ST Microelectronics' STM32 Virtual COM Port Driver. It reported that it installed okay. How do I ...
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1answer
55 views

Who's blocked access to my SMTP port? [on hold]

I have a very small scale personal mail server than I run on a VPS. Yesterday I migrated this, and changed the DNS records with the registrar (godaddy). Because of some limitations on the new host ...
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1answer
31 views

Monthly port monitoring

I just created a shadowsocks proxy in Tokyo (AWS) with multiple users on it. Each user has one specific port to connect and log on it. My question is, is it possible to monitor for each port ...
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0answers
4 views

Connection Refused on Host OSX 127.0.0.1:3000 for Vagrant/VirtualBox/nginx Rails App [migrated]

The Rails application is running on port 3000: $ bundle exec rails server -b 0.0.0.0 => Booting Unicorn => Rails 3.2.21 application starting in development on http://0.0.0.0:3000 => Call ...
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1answer
22 views

Using AWS, EC2, can't reach port 1433 for sql server

we're using two AWS EC2 instances, win 2012 servers, one for MS SQL Server and one for IIS. IIS is unable to reach port 1433 on the SQL Server. Here's what we've tried: Checked VPC setting and no ...
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2answers
63 views

Windows Server 2012 R2 port 443 open, stopping IIS doesn't work

Sorry for the bad wording in the title, 'doesn't help' is not allowed as a title, I am definitely able to stop IIS. While trying to install VisualSVN I ran into the problem that port 443 was already ...
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2answers
60 views

Run multiple websites/services on different subdomains with only one IP

I'm sure I can't be the first one to ask this, but I was not able to find anything that would fully apply to my scenario. So my apologies in advance, in case this has been asked before. I have a ...
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2answers
37 views

Make user or group own port

In some situations a web application will talk to clients through a reverse proxy (e.g. Apache with mod_proxy) where the reverse proxy is listening on port 80 and the web application is listening on a ...
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1answer
46 views

openSUSE installs and VMs constantly being hacked and bricked

Sorry if this is a total newbie question, but I'm doing frontend design work for a radical political organisation and ALL my installations of Linux, be they openSUSE, Ubuntu or Fedora keep getting ...
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1answer
65 views

Howto expose port in docker container

I’ve run a web service in a docker container on a custom port (8080). Here, I’m trying to run a container, exposing the relevant container’s port (as seen here), but the no avail. docker run -p ...
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21 views

Apache vhosts redirect to www.domain.com:PortNumber/

I'm having the following problem with Apache 2.4. I have set httpd.conf file to listen to 2 more ports (8081 and 8082) like this: Listen 80 Listen 8081 Listen 8082 DocumentRoot "C:/xampp/htdocs1" ...
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1answer
73 views

How can a system hold more then 65535 concurrent TCP connections?

As far as I know, a TCP/IP stack can only maintain an absolute maximum of 65535 concurrent connections; while reading the white-paper for some F5 BigIP load balancers, I see that these can hold open ...
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2answers
56 views

Port decisions for email setup in 2016 (Ubuntu)

I have a new Ubuntu 14.04 LAMP server with the UFW firewall setup on DigitalOcean. My goal is to add email for use on my phone(iPhone) and laptop(via Roundcube). There is a lot of old information ...
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1answer
22 views

Can't connect to socket from outside

I have a problem on my server when I start an application that listen to a port: I can connect to it from the same machine, but not from the ouside world. I noticed this problem when trying to create ...
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1answer
25 views

FTP Port Protocol Type

I recently switched to a different VPN provider, therefore did a fresh server installation. Before I proceed, please keep in mind that I am not super experienced with server stuff. I am having a ...
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2answers
46 views

Cannot copy a local file to live server over a port other than 22 [closed]

I am trying to copy a file from my computer to my server through scp command. I have changed the default sshd port from 22 to 36871. Now, the problem is when I issue the scp command over port 36871, I ...
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25 views

Redirection of ports does not work

I have a VPS, and by some reasons common ports (1 - 1000) are closed. I installed iRedMail, but did not find any ways to change smtp submission ports, so I decided to just forward connection. I have ...
3
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1answer
93 views

Reject all except for whitelist policy with firewalld

I've been reading on firewalld for about the whole morning, and I came up with the following public zone: <?xml version="1.0" encoding="utf-8"?> <zone> <short>Public</short> ...
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2answers
47 views

Nginx redirect port to url

I'm running a VPS that has VestaCP installed. The web panel runs on port 8083. I've managed to get it working on panel.domain.com however, some of the URL's in the panel lose functionality when using ...
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1answer
94 views

On Azure Windows VM, Why do some ports open fine and others do not?

I am trying to set up FileMaker Server on a new Azure Windows 2012 VM (not classic). The step that has me flummoxed is opening the ports. I have created the inbound end points for the three required ...
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2answers
17 views

Downstream IBM Httpd Server returns 404 only when accessed through another upstream IHS web server

We have a current setup like the following: HTTPServer - IBM HTTPD Server v? WASServer6.1 - WebSphere Application Server v6.1 (Running App "A") The basic communication is as follows on the listed ...
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1answer
56 views

Port not accessible

Am using AWS windows EC2 instance. I set the inbound rules in the machine to open all ports for public access. I installed IIS, and XAMPP in 8080 port. Now I could use 123.234.345.456 to open IIS and ...
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1answer
17 views

How to say when a service (any service) is available on a specific remote port

I'm using docker and docker-compose to compose a service which is a combination of several others. As the inner services are serving each other, there's a predefined priority by which they must be ...
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1answer
84 views

ZyXEL switch management port configuration [closed]

I'm a total newbie in configuring a network switch and I would like to know how can I configure the management port of a ZyXEL switch. I have a ZyXEL XGS3700-24 model and I set an IP address like ...
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1answer
23 views

How can i assing ip_local_port_range for different network interfaces

I want to ask is it possible to specify different port ranges (ip_local_port_range) for different physical interfaces on the same PC. Or is it the same for all physical interfaces.
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1answer
52 views

Ephemeral port reuse for TCP connections to different IP addresses

I know that a web server running a website on TCP port 80 can receive TCP connections from many different IP addresses sourced from many different ephemeral ports. Can a client initiate multiple ...
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2answers
387 views

Non standard ssh port: should I edit /etc/services?

On a *nix system, when configuring ssh to listen on non standard port, should I also edit /etc/services to reflect that. I would think it should be done, so tools that use it (such as ufw) will ...
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2answers
59 views

Correctly opening port 443 to the internet

I need port 443 open to the internet on my server. When I check internally via netstat -tulpn | grep "nginx", I see that nginx is indeed LISTENing on that port. However, trying nmap -p443 mysite.com ...
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1answer
31 views

Apache forwarding to different private port

So I'm working with a fresh install of apache2 from the repos on Ubuntu 14.04.3. For unrelated reasons, the machine is already serving other things on port 80, so I want Apache to serve on a different ...
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1answer
92 views

Port Security / MAC lock with Netgear GS752TXS

Has anybody here has in use the Netgear GS752TXS (52 Port Stackable Smart Switch with 10GE uplink) with port security active? I would like to activate port security on specific ports to allow only ...
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1answer
16 views

Avaya switch - need to block port 25

Situation: In QA-DEV Lab environment I need to block port 25 for the egress traffic on AVAYA ERS5510-48T switch. Question: How do I do it using EDM aka Web Interface? Couldn't find anything in ...
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1answer
25 views

Cannot use browser on server PC [closed]

I have a (Delphi-Indy based) custom server running on a dedicated PC. It used to listen on port 80 but on later versions of Windows that port is already assigned, so now I use port 8080. My clients ...
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1answer
35 views

FTP or file share [closed]

I have a server hosted in a cloud running ubuntu server 15.10. I don't have access to all ports (only main ports) and I wanted to install some kind of FTP server or sharing server. I'd like to host a ...
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1answer
11 views

How to point domain to an web aps inside a Tomcat instance?

I have a problem, many days I can't resolve. 1. I have 1 VPS CentOS x64, 768 MB RAM, host at vultr.com, IP 45.32.45.204. 2. I have 1 website active codingvn.com (I use script to point domain to web ...
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1answer
43 views

SSH RDP Tunnel and Port Connection

Tried doing some research but can't really figure out the solution (or how to troubleshoot further) for this problem. Objective and Reasoning for setting this up: SSH Tunnel RDP from work to home ...
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50 views

Rtmplite and Open Broadcaster Software

I'm messing around with Rtmplite (found here), a Python implementation of an RTMP server. I'm doing this because I have an old computer running SunOS 5.10 that I want to use to stream a friend's ...
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1answer
43 views

Watchguard blocking ports

I want to block the whole Internet for particular hosts. In this case I used policy 'Any" which basically blocks every single port (tcp+udp I believe). In FROM field I put particular IP address from ...
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2answers
80 views

When should a port 9040 used for? [closed]

A firewall rule for my web app ( python) is created with allowed protocol tcp:9040. I added my domain and created DNS zones, however I still don't get to see my app when I type my domain in the ...