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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CentOS 6 and PostgreSQL - Can't Connect to Port

SOLUTION: it turns out the ORDER of iptables matters. The firth INPUT rule is REJECT all ... which precludes the ACCEPT rule. So I had to use iptables -I INPUT 5 ... to add the rule in the fifth ...
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1answer
117 views

Application Unable connect Remote Server. FIREWALL Issue

Developing a C# Application that uses an WDSL/SOAP service and connects to a server via port 443 I know it is a Firewall Windows 2008 Server issue. Because when I disable it, it works perfectly. ...
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1answer
76 views

Apache2 can't bind to any port, multiple apache servers starting?

I have changed the apache2 (httpd) on CentOS 6.4 listen port to 80, 443, 25640 etc no ports seem to work (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening ...
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1answer
185 views

How do I specify port number for PuTTY to use with Windows cmd?

I start most of my SSH connections with a windows command like this cmd://"C:\Program Files\PuTTY\putty.exe" -ssh root@xxx.xx.xxx.xx I assume this defaults to port 22. Now I need to connect on a ...
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1answer
347 views

OpenVPN and port 1194 closed

I installed openVPN on my server. By default, the port 1194 is choosed. The problem is that when I am running: sudo nmap -sU localhost -p 1194 It shows me: PORT STATE SERVICE 1194/udp ...
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1answer
36 views

2 Apache with one user password in one system

I installed Apache 1.3, and Apache 2.2 on one system with different ports (444, 445). I used Apache Authentication info of 444 for both. When I want to go from port 444 to 445, Browser ask me ...
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1answer
265 views

Centos does not open port/s after the rule/s are appended

So after some battling and struggling with the firewall, i see that I may be doing something or the firewall isnt responding correctly there is has a port filter that is blocking certain ports. by ...
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1answer
39 views

Website hosted on IIS is not accessbile

I have two sites set up in IIS on a remote machine RM; one on regular port 80, and the other on port 5773. From my local machine LM, I can access the site on 80, but I cannot access the one on 5773; ...
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1answer
390 views

ssh connection refused port 22 :: github

I have a strange problem. On one of my dev server i use git clone command to connect to github. I have set up my keys already. The connection between the dev server and github is intermittent. When ...
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2answers
459 views

Ports do not open after rules appended in iptables [closed]

I have a server that I am trying to setup for OpenVPN. I have followed all the steps, but I see that when I try to connect to it in Windows, it doesn't allow me, it just hangs on connecting, so I did ...
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0answers
82 views

Infiniband dual-port redundancy

I want to setup redundant infiniband networking. I am going to use servers (Centos 6.4) with dual-port IB adapters (Mellanox Connect-X III series) and two unmanaged IB switches. I know that IB paths ...
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1answer
38 views

Changed the port in Debian and forgot [closed]

A dedicated server with Debian 7 Changed the port in Debian (/etc/ssh/sshd_config) and forgot. How do can I find the port number?
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9answers
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Check if port is open or closed on a Linux server using SSH?

How can I check if a port is open or closed on a Linux server (running Cent OS 5 and cPanel) using SSH? EDIT: And how can I open the port if it is closed? Thanks, James
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1answer
39 views

How is the port a part of a packet? [closed]

Computer A is running a program that initiates a request to Computer B on Port X. Where / how is the port transmitted in the API request?
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1answer
76 views

How to route specific IPv6 address to another port?

I just got a VPS with an IPv4 address as well as a bunch of IPv6 addresses configured and I'm new to routing in Ubuntu/Linux. I would like to route requests with a specific IPv6 and port (i.e. port ...
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0answers
88 views

Only Apache can listen to port 80 on MacOSX

I have a python web framework, Tornado, trying to listen on port 8000 but failed. Under the testing conditions below, firewall has been disabled in system pref pane. ipfw list shows 65535 allow ip ...
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2answers
317 views

Cant open a port on my linux server [closed]

Here is the thing, my server fails to connect to gmail SMTP with timeout error. I think the 465 port is closed on my server so I did couple of thing, now my csf.config file hase this two lines: ...
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2answers
182 views

How to modify iptables so a port is accessible on the server

when I do curl --insecure https://localhost/svn from my linux box I can see that it is returning some data However, when I run curl on this machine from another machine on the same network e.g. ...
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2answers
73 views

How to map an ephemeral port to a pid?

I have a RHEL server with several apps on it and I am attempting to figure out which one of them is making calls to an external web service. I have TCP dumps that show the calls being made and through ...
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2answers
883 views

How to specify the SSL port with command line curl?

I'm trying to test the SSL connection on one of my servers. The server is behind a LB so it's listening for SSL connections on the port 8090. I have use the --resolve option to test when talking to ...
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3answers
761 views

How do high traffic sites service more than 65535 TCP connections?

If there is a limit on the number of ports one machine can have and a socket can only bind to an unused port number, how do servers experiencing extremely high amounts (more than the max port number) ...
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9answers
48k views

How do I find out whether a port is available on Ubuntu 8.04?

Is there any command I can run from bash that will tell me whether a port is already open?
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3answers
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How can I block port 6379 for outside traffic on ubuntu?

I want to block access to port 6379 on my server, but I still want to connect to it internally. The redis-server application runs on that port and I want to connect to it only locally (127.0.0.1). ...
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4answers
11k views

FTP/SSL in passive mode with portrange, which ports has to be open on the firewall?

We have to use FTP over SSL on our server and use a portrange with 5 ports for the data connection. A firewall is between client and server. We have to know what we have to open at the firewall: port, ...
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2answers
196 views

Use my server as a proxy to bypass blocked ports [closed]

I cannot connect to some services (TS3, Mumble, Steam...) from my university because some ports are blocked. I was wondering, can I use my dedicated server as a kind of proxy? so I connect to my ...
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3answers
680 views

Port 80 and 443 won't forward?

I live in Australia, and my ISP is Bigpond (ADSL2) with a "Thomson TG782T" Router, and my port 80 and 443 won't forward. I have set up an Apache server before years ago (I was in a different ...
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0answers
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selenium.common.exceptions.WebDriverException: Message: 'Can not connect to GhostDriver'

I'm trying to run PhantomJS from within selenium.webdriver on a Centos server. PhantomJS is in the path and is running properly from terminal. However in the script it appears to be launched, but ...
2
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2answers
577 views

VMware ESX: Unable to delete PortGroup. 1 active ports

At work we have an ESX 4.1 cluster with some vlan's (Port Groups) configured on a vswitch on each host. A lot of these port groups aren't in use anymore so we decided to clean them up. We don't have ...
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0answers
14 views

Display number of bytes transferred over a port

how can i display the number of bytes transferred over a certain tcp port? I know there are several tools (iptop,iptables...) which can monitor this, but what i need is an absolute counter. I poked ...
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1answer
99 views

Cannot reach website from outside of LAN [closed]

I am at much of a loss here, guys. I am running an Apache HTTP webserver from my laptop and I am unable to reach it from outside the routers borders/LAN. I cannot seem to ping it outside LAN and when ...
15
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4answers
5k views

Change protocol associated with port in wireshark

I'm trying to monitor some web traffic using wireshark. Our web proxy is on port 9191. How can I get the wireshark view to treat port 9191 just like port 80 - ie as HTTP. Just using Decode_As on the ...
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1answer
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Installing gitosis and closed port?

I'm trying to install gitosis on a Server (hosted by OVH and running Ubuntu server 11.04). I've done it a few times and never had any problems. But this time I have something very wired when I simply ...
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0answers
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Win 2008 firewall exceptions wont save

Possible Duplicate: My server’s been hacked EMERGENCY Windows 2008 R2 - all updates. The firewall used to work fine - since i edited the exceptions, up until now. Im getting RDP brute ...
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1answer
79 views

SELinux remove or leave the old SSH port label?

I am following this (basic) security guide to change my Server's SSH port to something else. It says: $ semanage port -a -t ssh_port_t -p tcp 2345 #Change me ...which would add a new label on top ...
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1answer
23 views

Monitoring Port Requests for Command

I have a command which I am running that starts a process listening on a port. I am currently getting the following error. socket exception: Address already in use The problem is, I don't know what ...
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1answer
74 views

Remove port from the url [closed]

How can I change the url http://localhost:8080 to http://localhost in a lighttpd server.. I searched on Google, but no luck.. My current .conf file server.document-root = "/mnt/sdcard/www" ...
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1answer
287 views

Allow socket connection in Solaris

I have 2 solaris machines and I have an application that opens a socket via port 8556, but for some reason the connection keeps getting refused. When I run a netstat command on the second server ...
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0answers
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what is PAT exactly?

In attempt to understand PAT, I've setup the following setup where I have a Linux Router that masquerades from in internal interface to the external. Thus both clients are able to talk to outside ...
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1answer
91 views

access application through a specific node/app server in websphere

i have an application hosted in websphere 6.1. there are 4 application servers in a single node. each app server has its own http, listener port numbers. what i am trying to do is access the ...
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1answer
510 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. ...
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0answers
215 views

Change default ssh port on Fedora EC2

I have changed my /etc/ssh/sshd_config adding multiple ports for it to listen: $ grep Port /etc/ssh/sshd_config Port 22 Port 80 Port 443 However, after a service sshd restart (which shown no ...
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3answers
150 views

Hosting a web service on port 22… Is that possible? frowned upon? [closed]

I am trying to resolve a client's problem and I had an (bad?) idea... The problem : Client has two web servers running behind his wan router. (physical servers in his building) Each server hosts a ...
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3answers
315 views

What is the difference between these 2 iptables rules?

Trying to allow incoming ssh traffic on port 22. Default behavior is to DROP all incoming traffic. I came across 2 articles on how to allow traffic. However, they are different. ## open port ssh ...
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1answer
30 views

statistics on port 22 blocking [closed]

What are the statistics on port 22 blocking by firewalls in small and medium sized enterprises? We have a product that a customer installs on a PC, which communicates via ssh to our cloud server. It ...
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1answer
144 views

Using Group Policy create Local Port that points to C:\scanbookdata\epl.txt

I'm trying deploy a local port printer which points to c:\scanbookdata\epl.txt using Group Policy. Below is screen shot of what I'm trying to do : I'm lost as how to go about this. Any help would ...
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1answer
1k views

Issue with SSH on Ubuntu - Local connection ok, remote connection - Is it me or my ISP?

I have an issue with a server running Ubuntu 12.04, I am trying to set up a remote connection so I can access the server at my work from out of town. I have installed the SSH server and all that ...
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2answers
330 views

Ethernet port plastic plug blocking port access on server

I have Dell Poweredge server with plastic blockers inside their ethernet ports. My problem is that I don't know how to take it out. You can see photo of the plug here: I tried to pull them out, or ...
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1answer
73 views

Iptables log clent IP to file

Im trying to track whether some ports are being used, and what by, as I want to close them. I have made some iptables traffic counters, and have worked out is a small amount of traffic, coming into a ...
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2answers
51 views

java http service on mac server with Apple server admin

I've written a simple com.sun.net.httpserver.HttpServer program that runs on a non-server mac. When I visit http://localhost:39600/test in a web browser, it gives me the correct response: "Here's my ...
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1answer
52 views

Securing SSH for cross site access

We have 2 servers, one each located at different geographical locations where we are considering using an rsync script to keep certain folders in sync. Our setup disables root login and password ...