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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Conecting To Amazon EC2 through seperate wifi at same time using Ethernet for HTTP Traffic [on hold]

I am currently in a university Network which allows connection to INTERNET via HTTP/HTTPS proxy . which looks like 10.3.100.207:8080 All I needed is to connect to Amazon EC2 Instance via separate ...
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1answer
25 views

Changing httpd port

I am running httpd on CentOS 6.6. I've successfully set up a site on port 80, but now I wish to have the site on port 82, so when I type <myip>:82 in my browser I can view the site but not <...
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ASUS RT-N66R won't allow port forwarding of 80 [on hold]

Has anyone else tried to port forward outside port 80 to inside port 80 on an ASUS RT-N66R? I just spent 3 hours trying to get a new web server functioning from the internet (which I've done quite a ...
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Working of VPN in layman terms? [on hold]

I am having some troubles understanding how vpn functions and how does it provide a secure channel can u verify if what i understand is correct : a vpn client connects over internet to the vpn ...
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1answer
25 views

Cannot access to any port of Azure VM except RD (3389)

I have a new Windows Server 2012 Azure Virtual Machine. Everything works fine through RD until I try to access from outside. I cannot access SQL Server service (I gave up after 1 hour of trying ...
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semanage to add port, how to make active without reboot

Added a new SSH port using: semanage port -a -t ssh_port_t -p tcp #PORTNUMBER Added the Port to /etc/ssh/sshd_config, restarted sshd, and confirmed with netstat that a service was now listening on ...
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23 views

OSX - port 80: Connection refused [on hold]

Any TCP/IP connection to Port 80 is refused, but any connection to another port works well. Example "refused request to port 80": curl heise.de --> curl: (7) Failed to connect to heise.de port 80: ...
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2answers
24 views

SElinux error :ValueError: Port tcp/5000 already defined

I have been trying to add an exception to SELinux for apache on port 5000.So I used the command: # semanage port -a -t http_port_t -p tcp 5000 But returns the error, ValueError: Port tcp/5000 ...
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3answers
206 views

Unable to access postgres remotely from Azure VM

I'm trying to access a postgres database remotely and I can't for the life of me get it to work. I've installed a Gen 2 linux VM in Azure with Ubuntu 14.04 and installed postgres. SSH works remotely,...
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1answer
21 views

postgresql port closed for remote access

I'm trying to connect to a PostgreSQL database in an Ubuntu Server, which I have root access, but somehow I can't open port 5432 for remote access, just local. This is what happens when I use "nmap" ...
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2answers
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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
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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
21 views

How to configure iscsi targets so they are on dedicated ports?

I have two hosts. One is the iSCSI initiator. The other is the iSCSI target. They are both running Ubuntu 16.04 LTS and both are using open-iscsi. Specifically, the target host (let's call it "...
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1answer
3k views

Open port 8009/tcp on Fortigate necessary?

A nmap scan of a Fortigate Firewall showed that TCP port 8009 open is. According to knowledge base articles this is only to download the client for ssl vpn. Is this port used for anything else, and if ...
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1answer
36 views

Microsoft Azure Backup Server TCP/UDP Ports to open

Planning to install Microsoft Azure Backup Server in our production environment which is firewall restricted, but I could not find any documents which specify the exact TCP/UDP port requirements. ...
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1answer
1k views

Cannot connect to a port from outside even if Windows Firewall is OFF

I'm getting a strange problem in my Windows 2008 R2 server running on a Hyper-V Virtual Machine. My application is listening to port 8002, which is well listed in command: netstat -na Now I'm able to ...
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2answers
2k views

Stop IIS 8.5 from listing on Port 80, but still listen on port 443 for specific IPs

A have an application server that serves a number of IIS 8.5 applications on a number of IP's. Some use port 80 only, some use port 443 only, some use 80 & 443. For the sites that use 443 only, ...
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0answers
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Cannot connect to anything above port 6000

I have an instance of Windows Server 2012 R2 running on Amazon Web Services. I am not able to make a TCP connection to the server on any port higher than 6000 for some reason. All ports below 6000 ...
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0answers
27 views

Can't bind UDP socket but port is free

I've been struggling for a while now with this so maybe someone here is able to help me. I'm setting up a CS:GO server that's going to be running on port 27059. (This is a copy&paste from a ...
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1answer
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sendmail : closing port 25

Nmaping my server I got theses results : PORT STATE SERVICE 25/tcp filtered smtp 80/tcp open http On the server-side : netstat -lpn Proto Recv-Q Send-Q Local Address ...
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2answers
62 views

Which Ports need to be accessible on a Domain Controller for Clients to logon?

We are currently segmenting our network. We will move the servers in another subnet than the clients. Of course the clients still need access to the domain controller to authenticate against it. I ...
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1answer
1k views

Node.js websocket error “Error: listen EADDRNOTAVAIL Error: listen EADDRNOTAVAIL”

Application work fine on localhost .but when its connect to server it getting error. I connect server through port 22 But my app connecting server port 80. This is the error Error: listen ...
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2answers
2k views

UDP/TCP ports on AWS ec2 public IP blocked

My goal is to receive/send UDP packet traffic on specific ports on my EC2 instance (on my eth0 private IP) via my public IP. I am asking because I have set my security group to allow all inbound/...
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0answers
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Any solution to use RoundCube on a Google Cloud VM Instance?

I have launched a Debian 8 instance, installed ISPConfig with Apache2, MySql, and RoundCube. (Following HowToForge tutorial) But when I tried to send or receive emails using RoundCube, no success. I ...
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1answer
96 views

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
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Accessing internally stored documents via hyperlinks in Websites on a DMZ server

We have a vendor-provided application running internally (LAN) on a Windows/MS-SQL 2012 server, providing access via IIS on the same box. The application is able to store attached documents - these ...
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16 views

Deploying builds from Jenkins Slave

we are trying to get set up to use group instance of Jenkins. Both Jenkins Master and Slaves are cloud hosted. Once the build is completed on the slave we need to deploy it to a development server in ...
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28 views

nginx proxy serve url with port instead of url only

Try to use nginx as proxy to serve some containers. Unfortunately my site only work with the port... So i create two container: container A : nginx container B : nginx + php My IP is xx.xxx.xx.xx ...
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1answer
34 views

Do incoming and outgoing ports have to match?

Our server was setup with sftp on a custom port, say, 12345. The connection could be done like so, and required the port setting: sftp -oPort 12345 user@host I understand that is at least ...
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85 views

Apache configured on Centos 7 to listen for https requests on non-standard port (8443) but from outside the connection is refused

I am working on this for quite some time with researching the Q&A everywhere. Any hints would be most welcome. The setup: small private network at home with router from ISP (Comtrend VR-3026e ...
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4answers
2k views

XAMPP apache localhost - browsers point to the wrong port even after I changed Listen port back to 80

Running Windows 7. Got a weird problem - I used to use port 8080 for my apache on XAMPP as somehow I couldn't get it to work on 80. I did that by changing the Listen port of /xampp/apache/conf/httpd....
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Using Multiple SSL Certs on the same port with OWIN Self-Hosting?

I have an application that is being hosted on an Azure Cloud Service - Worker Role. On start up, the application creates multiple new instances of OWIN SelfHosted Apps. Each app has it's own domain ...
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2answers
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Ports aren't really getting blocked with iptables [closed]

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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5answers
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Difference between trunk and tagged port

I am reading some wikipedia articles and RFC 5517, studying VLANs, and I don't recognize the difference between a trunk port and a tagged port. From what the material I am reading says, a tagged ...
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2answers
1k views

Bind DNS server respond timeout

I've set up a BIND DNS server on centos 7. I've created the master zone record, it is the following: $ttl 38400 loool.ro. IN SOA ns1.loool.ro. owner.yahoo.com. ( 1421842090 ...
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1answer
1k views

OpenVPN client opens a random UDP port?

We are noticing this on a number of our openvpn clients: [root@box ~]# netstat -tulpn | grep openvpn udp 0 0 0.0.0.0:53950 0.0.0.0:* 1562/...
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2answers
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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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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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1answer
19 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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3answers
992 views

rsync: ssh unknown option -p2122

I run this command to replicate data from one server to another. It's been working for a quite a while. I have this setup as a cron job. Yesterday for some reason, it stopped working. I ran it ...
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183 views

IPA Server installation: Error with port number

When I am trying to install IPA server, I am getting the following error : IPA requires port 8443 for PKI but it is currently in use. Aborting installation I checked with netstat -tuplen | grep ...
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8answers
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Port 80 is being used by SYSTEM (PID 4), what is that?

I am trying to use port 80 for my application server, but when I perform "netstat -aon" I get TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 When I look up the process in ...
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1answer
35 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
39 views

Unable to find a process id [closed]

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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2answers
90 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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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
62 views

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

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 OS,...
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4answers
25k views

Monitor ssh on non-default port with Nagios

I just deployed Nagios on a Gentoo server and everything is fine except ssh, which it marks as "CRITICAL" because it's refusing connections. But that's because it's running on a port different from ...
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1answer
27 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
110 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 ...