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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2answers
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Trying to access port 3306 (only using it locally)

I am trying to open port 3306 on my archlinux distro. I've tried multiple different iptables settings, but I can't seem to get it to work. (Locally) Here's my current iptables setting: Chain INPUT ...
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1answer
29 views

How to open rails on port 80 in ubuntu [closed]

I have rails installed on a user on my server but not on the root user. I have full access to the root user however when I attempt to run my rails server on port 80 on the user it specifies I need ...
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0answers
7 views

Port forwarding within network using iptables [closed]

I'm trying to redirect external traffic internally within my network? This is my set up: External IP- Router - Ubuntu Server (Open to all traffic -192.168.1.2) - Raspberry Pi ...
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2answers
18 views

okay to allow any outgoing port for sending mail

I have a small app on my centos6.6 server i am running that allows the user to send an email on a custom port and I am allowing any port to be used. Is there any security risk for allowing this app to ...
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0answers
32 views

Debian Openvpn port closed

Newbie in linux! there is already similar questions are asked here, but the solutions are not working for me. can somebody help me with this issue: I have been installed openvpn server on debian 8.1 ...
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2answers
27 views

How to list open but not used (by a process/program) port?

I have a VPS with debian wheezy installed on it. A firewall is active on the it with all ports not allowed by default. The firewall can be managed through the web interface of the provider of the VPS ...
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2answers
36 views

Multiple protocols on the same port [closed]

From my understanding, Facebook Messenger uses 443 for both HTTP and MQTT (or whatever protocol they may use now) traffic. That seems to be a good strategy, as in some very constrained networks only ...
0
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2answers
31 views

IIS can't use port 80 in w2k3

I have a w2k3 server running IIS and exchange. IIS is used for sharepoint interface. Recently, i had to install a self-certificate in the server to use IMAP over SSL with a tool named Selfssl. No ...
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0answers
22 views

amazon server using RedHat EL 7 on port 3306 so that i can access mysql database remotely

I want to remotely access mysqld on port 3306 but when hen i telnet from public ip address i get a connection time out error. Whats happening here. But within the server telnet is working just fine ...
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0answers
3 views

How to free a port on OS X when lsof(1) reports that it is not in use [migrated]

I am a developer working in OS X on Eclipse. A bug I have been working to fix in a web application results in some very strange behavior when resetting an instance of Tomcat, resulting in the ...
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1answer
45 views

Run Service Control (sc.exe) command on secure port

Our team runs the following commands to turn on and off Windows Services (e.g. JBoss Native) from the Windows command line as well as through source code in a program. It connects to a remote box. ...
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0answers
28 views

Configure 2 IP in one LAN Card and configure ports in each IP using firewalld

I just move my server from Centos 6 to Centos 7. I read that Centos 7 now using firewalld instead of iptables. Now my problem is I have only one card and I need to use for 2 ip, for example 1.2.3.1 ...
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0answers
15 views

IIS 7.5 - Not listening 0.0.0.0:80

I am using IIS 7.5 on Windows Server 2008 R2. From this server, I can access the localhost (standard IIS start page is displayed). But I can't access it from any other machine belonging to the same ...
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0answers
18 views

iptables open port to an LXC container with public IP

I've encountered a strange problem I have no idea how to fix. I'm trying to close all ports on my server, and open only the ports I need in the directions I need. Thus, I ended up with: IF=eth0 ...
0
votes
1answer
47 views

How many data channel ports do I need for an FTPS server running behind NAT?

As the title states, I currently have an FTP server accessible via FTP or FTPS (explicit) running NATed behind a router. The server is running Windows Server 2012 R2 with IIS 8.0 (I believe that is ...
0
votes
1answer
19 views

Only a certain subdomain accessing a certain port [closed]

Is there a way of having only a certain subdomain access a port? Let's say I have a Minecraft server running on default port 25565. I also have domain.com which is pointed to the IP of the server, ...
0
votes
1answer
28 views

Can't make nginx listen on nonstandard ports (3000, 35729)

This is on a fresh install of Ubuntu 14.04 running on a VPS. For example the following will work: server { listen 8080 default_server; root /var/www; location / { try_files $uri ...
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1answer
26 views

What might be using my smtp port on a new CentOS machine?

I'm trying to setup a simple email server using node smtp-server. I'm the only one that's ever accessed the machine (a CentOS 6.5 box on Digital Ocean), and I've only set up 2 http servers. I'm ...
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votes
1answer
12 views

Which log file can I use for server port analytics?

Ideally I'd like to use piwik to track conversions from ads to server connections on port 5000 and port 5001 but I highly doubt that is even possible. I'm willing to settle for [ipaddress,time ...
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1answer
29 views

Load tomcat application via DNS without typing 8080

I am having a Amazon EC2 Ubuntu instance. I have installed LAMP server and tomcat 7. I also have application running in tomcat. Now, my URL for apache is - ...
1
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1answer
65 views

Can't access to a port (which is running Spring boot jar) via it's public ip

I have deployed my spring boot app jar to centos server with this command: nohup java -jar black-0.0.1-SNAPSHOT.jar > log_black.out & In my application.properties I set the server port ...
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0answers
59 views

create tunnel in order to access https via port 443

I have win machine that connected to Linux server 192.9.100.10 And Linux server has connectivity to the IBM blade center management GUI - 192.9.100.200 From my WIN machine I not have connectivity to ...
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4answers
211 views

What exactly is going on when I go to localhost:8080 in my web browser? (Apache Tomcat)

I've spent my career doing all local application programming (C++ applications and whatnot). I'm trying to dig my feet into the web world now, however. I'm using Eclipse (Mars) and Apache Tomcat ...
0
votes
1answer
37 views

Choosing port numbers in the range 10000-19999

We have a Spring Boot application, which we control, running on given development and production machines. We use "standard" port numbers such as 8080 (Tomcat), 8686 (JMX) and the like. We don't ...
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1answer
12 views

Will tomcat connect to the port it is configured to as soon as it started?

I'm a newbie in this area. I want to know if I can listen to port 80 which tomcat is configured with as soon as the tomcat service has started. No applications have been deployed to it yet.
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0answers
42 views

Netsh does not work as expected

I work with windows. my IP on the local network is A.B.C.D I have a service that runs on a network private to my machine @ IP E.F.G.H and port X I want users on my network to access the service ...
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4answers
77 views

is it safe to change the RDP port?

My web server is in the U.S. and it is accessed from my home in Canada using Remote Desktop Connection, standard port. Unauthorized persons have tried to log in from many different countries, some ...
1
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1answer
69 views

How to bind webmin to one specific domain/vhost? [closed]

I'm running a Virtual Private server with three specific domains. Let's say example1.com, example2.com, example3.com. I installed webmin on this VPS to peform some easy tasks and just to manage some ...
2
votes
2answers
284 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
30 views

SSH Tunnel connection issues

I am having difficulty with an SSH Tunnel which keeps dropping. i have tried with a variety of ports and have checked the event viewer to see if there's any information there but as yet have found ...
0
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1answer
50 views

SSH Tunnel Connection keeps dropping

I am developing a site whereby the site connects to a clients server to query the database. A ssh tunnel was created and this approach has worked fine for all sites but one. I'm assuming that because ...
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0answers
24 views

Network syslog with port number

I am collecting syslog from VoIP phones over the network and it is usual having several phones behind same NAT device. I need to collect syslog files to different files or be able to differ lines ...
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2answers
93 views

Redirect subdomains to services on different ports of same server

I have a VPS which has 1 IP. If I run two socket servers, one on port 8080 and the other on port 8081, is there a way I can map service1.mydomain.com to the socket server on port 8080 and ...
2
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2answers
267 views

How to set up a secure Git repository?

I followed this tutorial to set up a git repository on an EC2 instance. http://git-scm.com/book/ch4-4.html. Basically, I add a new git user and include my public key in authorized_keys. After setting ...
0
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1answer
61 views

Binding to same port on different IP addresses

My situation is as follows: One machine with 2 IP addresses: 10.10.20.7 and 10.10.20.17 Two applications that listen on port 9000 (each on it's own IP) What I'd like to achieve is while one app is ...
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0answers
47 views

How to check if connection is working before load balancer decides which server to use

I am working on a project whereby we deliver a secure site for our customers. We host the sites on two servers behind a load balancer but have port connections (24000-24100) to each database. The ...
0
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1answer
51 views

How to use non-deprecated tools like ss to get process id running on a port?

I am looking for a non-deprecated way of running a command like netstat -tulpn | grep 8000 to output information about an active port. Any suggestions on how to use a tool like ss to get the process ...
0
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1answer
105 views

CentOS 7 Cannot delete ports defined for MongoDB

I installed and later removed the MongoDB server on a CentOS 7 box. While cleaning up, I noticed that the ports assigned to MongoDB were still open. if I remember correctly, I was able to delete the ...
0
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1answer
105 views

Safe to kill a process called *:etlservicemgr (LISTEN)?

I am trying to serve locally to port 9001 but I get an listen EADDRINUSE error. When I look at the port with lsof -i :9001 it shows the following COMMAND PID USER FD TYPE DEVICE ...
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votes
3answers
52 views

Ports from switch to system

I have rcently joined a company and we want to migrate our network to 10.0.0.0 ip address range from 192.168.0.0. Also we want to configure few vlan's But the major challange i am facing is that ...
2
votes
2answers
113 views

Can't SSH, but can TeamViewer [closed]

I would like to SSH into a computer behind a firewall that blocks SSH connections (incoming and outgoing). Amusingly, I can still access the computer using the remote-desktop software TeamViewer. I ...
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0answers
35 views

UFW Firewall on Ubuntu

I have installed UFW on Ubuntu 14.04. I used following commands to enable a port: sudo ufw allow 9384/tcp When I used the status command (sudo ufw status) it shows me that port is open for both IP4 ...
0
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2answers
46 views

Redirect a port to a blocked port but with the filter to unlock it

I have all ports with iptables dropped for security reasons, now i want to open a port which redirects the traffic to a blocked port, but it will open if the traffic comes to this port. Let's see, i ...
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votes
1answer
42 views

What is the bind address used for when forwarding a port via SSH?

I have a brief understanding of port forwarding via SSH. So let's say I have a VNC server up and running at port 5901. I pick up my laptop, go to work, then I want to connect to my server, but I want ...
0
votes
1answer
44 views

RDP Certificate/s for Static IP+Port/s

I need to RDP into multiple machines behind an external static IP. The method I'm using is to port forward selected ports to a target IP:3389. E.g. forward 100.110.120.130:10001 to ...
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1answer
48 views

What are the different Status options for Dell show copper-ports command?

When the below command is issued in a Dell N2024P/N3024F switch show copper-ports tdr The following output is generated Port Result Length Date Gi1/0/1 OK 0 - 10 Jan 1 ...
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0answers
6 views

firewalld allow connections to a port for only a subnet of IPs [duplicate]

I am on Fedora 21 Workstation on my PC. By default, all ports through firewalld are open on Fedora 21. When I open a service accessible through a port (such as a CouchDB or a SQL server or a simple ...
2
votes
1answer
296 views

Port 8080 remains closed even when opened with iptable and nodejs is listening on it [duplicate]

I am trying to install a nodejs server listening to port 8080 that I opened with iptable but when I run nmap or a web tools I always get the message that the port is closed. I'm on a Ubuntu vps. ...
0
votes
1answer
95 views

SSH works only on the standard port

I can connect to my remote server only if I use the standard 22 port. When I change the Port (to 40004 for e.g.) in /etc/ssh/sshd_config I get an error: ssh: connect to host 123.45.67.890 port 40004: ...
2
votes
1answer
51 views

dovecot won't reload config?

I want to run imaps on a port other than 993. I changed this in /etc/dovecot/conf.d/10-master.conf and beforehand, backed up the original copy as /etc/dovecot/conf.d/10-master.conf.bak. I did ...