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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2
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4answers
17k views

Need to open port 10000 for webmin and 21 for FTP in Centos?

How can I open these two ports in CentOS? I have used Ubuntu before, but I never had to manually open any port. When I enter iptables -L, I get output like this: Chain INPUT (policy ACCEPT) target ...
1
vote
1answer
57 views

Hadoop namenode port getting blocked

I have installed 7 VM instances of Ubuntu 14.04 LTS servers. First instance runs the namenode service and all other 6 nodes run datanode service.I think my NameNode is getting crashed or blocked due ...
1
vote
2answers
777 views

Allow curlftpfs though iptables firewall, how?

I'v allowed FTP ports 21 and 20 which then allows me to connect to my FTP server via "ftp" command, but I still can't get curlftpfs to work. What ports does curlftpfs all use? Or is their something ...
0
votes
4answers
56 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
30 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 ...
-1
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0answers
12 views

Create an email reflection service on my cPanel Server [closed]

I have a client on my web hosting service that would like to have emails on his domain name transfered to his local SBS server on port 26. I found services with no-ip.org for email reflection and I ...
0
votes
1answer
1k views

Windows SMTP Service - Configure Smarthost for Specific Domains over different ports

I have a client that was recently acquired by a company. Their email system now resides on the parent company's network. Currently there is no VPN setup between my client and the parent company. I ...
19
votes
4answers
47k views

How do you free up a port being held open by dead process?

A colleague of mine recently ran into a problem where a process that had supposedly died was still bound to a network port, preventing other processes from binding to that port. Specifically, netstat ...
0
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1answer
11 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.
2
votes
3answers
4k views

WMI: How can I fix the port?

I need to use WMI for getting some information from my servers. But I have a server in DMZ, so I need to open a port in my firewall. I've searching and I found that WMI uses random port. How can this ...
0
votes
0answers
26 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 ...
1
vote
3answers
1k views

Windows Server 2008 - unable to bind any TCP port

OS: Win Server 2008 RC2 Windows firewall on (no effect when off) I have suddenly been plagued by an issue in which I cannot find any similar ones with a search. I am running about 20 game servers ...
1
vote
1answer
1k views

Configure Glassfish http-listener to Port 443/ 80

I want to configure the http-listeners in Glassfish 3.1.2.2 Build 5 under Linux. I changed the settings for the http-listener-1 to the port 80 and the settings for the http-listener-2 to the port 443. ...
0
votes
4answers
1k views

Server not reachable on all TCP ports from all locations

I have a very strange situation on a Linux (CentOS) server. Firstly, from my Ubuntu desktop PC, I can successfully connect to all services that are running on it, on ports 22, 80, 8080 and others. ...
0
votes
5answers
14k views

Unable to connect to MySQL through port 3306

I read the answers about 3306 from a question posted in 2009. I have the same problem, but the answers I read didn't help. Port 3306 is open, even if I stop the windows-firewall, MySQL still can't ...
1
vote
1answer
33 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 ...
0
votes
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 ...
0
votes
1answer
968 views

Change Apache Port on Plesk [closed]

I have googled my eyes for the past three hours yet failed to find an answer as to HOW do I change the default Apacht PORT on Plesk. I want to put all Hosts to Port 81. Updating the central config ...
1
vote
4answers
54 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
votes
0answers
29 views

Trouble configuring postfix

I am trying to configure postfix to be able to send emails from PHP for development purposes. I just installed it following this guide. When I try to send mail to the virtual users I set up I don't ...
2
votes
2answers
170 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
votes
3answers
313 views

Running an email server on a VPN client, wanting traffic passed through for smtp, pop3,imap etc from vpn server. [closed]

I have a home broadband network which I also run an email server. As my provider won't give me a fixed ip address, and most servers refuse to accept smtp mail from dynamic ip ranges, I felt the simple ...
0
votes
1answer
57 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, ...
1
vote
4answers
5k views

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 ...
1
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0answers
28 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
votes
1answer
39 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 ...
0
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0answers
21 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 ...
0
votes
2answers
60 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 ...
0
votes
1answer
37 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 ...
0
votes
1answer
52 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
votes
0answers
33 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
votes
1answer
115 views

SharePoint link to Cognos TM1 Server causes 403

We have a strange issue where a direct link from SharePoint to a Cognos TM1 URL causes a 403, however if we refresh or paste-in the link directly it works. The cause might be related to the leading ...
0
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1answer
33 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
39 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 ...
-1
votes
3answers
48 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 ...
1
vote
0answers
27 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 ...
2
votes
2answers
70 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 ...
0
votes
2answers
40 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 ...
1
vote
1answer
343 views

Redirect ssh trafic for one user through another port

Is it possible to have a configuration like this: A server which listen ssh connections on port 22 as usual For one user (let's say git) redirect all the traffic through another port (2222 for ...
-1
votes
1answer
35 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
39 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 ...
3
votes
1answer
502 views

Setting up SRV records for a Minecraft server

I have a Minecraft server listening on port 25566, and I'm trying to set up an SRV record on my domain so you can access that game server by just typing the IP address: play.example.com. After many ...
0
votes
3answers
2k views

Running a websocket server and a http server on the same server

I am using nginx to to serve an instance of PHP application, and also at the same time running a Ratchet app to listen to a websocket connection. Problem is, both of these instance are using the same ...
1
vote
1answer
30 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 ...
0
votes
0answers
5 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
146 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. ...
2
votes
1answer
47 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 ...
0
votes
1answer
87 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: ...
0
votes
1answer
1k views

iptables denies internal access to port 17500

In the kernel log there are hundreds of these lines. The source is the external IP of the VPS (not localhost nor 127.0.0.1), other times an IP of the network of the VPS provider. The source port and ...
0
votes
0answers
24 views

CentOS 6.6 port not open locally [duplicate]

I searched around and can only find the opposite problem -- ports are available locally, but not remotely. My issue is, the port was opened for me remotely, and it works, but it isn't available ...