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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1answer
265 views

How does Windows 2008 specifically select ephemeral ports (does it test to avoid conflicts)?

I have a server application which uses permanently connected incoming ports within the range that W2k8 now uses in the IANA recommended range of ~49000-65000. (For legacy reasons it's extremely ...
3
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1answer
82 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> ...
3
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1answer
992 views

Nginx Not Logging https / :443 Requests

I am in the process of trying to configure a Server with https and for some reason it seems the requests are not hitting nginx at all. I have everything working properly but once I go to enable ssl ...
2
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1answer
818 views

Apache keeps adding 8080 port by itself while I'm telling it to use 80 only

Here's my httpd.conf. Inside it, I have the following in place #Listen 12.34.56.78:80 #Listen 127.0.0.1:8887 Listen 127.0.0.1:80 #Listen 127.0.0.1:8080 Listen 192.168.1.4:80 and I have a .htaccess ...
2
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1answer
872 views

Allowing a specific IP Address through a blocked port in Windows Server 2008 R2 Firewall

I have created an Inbound rule to block port number 1433 however I need to allow my static ip address to access this as I use SQL Management Studio to connect to databases on the server. I have ...
1
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1answer
45 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 ...
1
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1answer
101 views

Change server manager rdp connecting port (azure)

I have been trying to establish a remote desktop connection to a azure server using the server manager that is included in the rsat. But I havent find a way to connect to the server because my server ...
1
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1answer
238 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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1answer
360 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
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1answer
167 views

Is there a well-known port for logstash-forwarder?

I'm setting up a few logstash-forwarder agents which will send logs to a central Logstash server, and need to choose a port for Logstash to listen on. After doing some searching, there doesn't seem to ...
1
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1answer
942 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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1answer
697 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 ...
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1answer
272 views

natd redirect_port didn't work

I have an virtual box freebsd 9.0 installation, on which I have working moinmoin2.0. Moin works on 127.0.0.1:8080 and I want to get access by external IP, e.g. 192.168.1.145:80. I try to use the ...
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1answer
72 views

Prevent port from being used by anything but one application

Is there a way to make only java be allowed to use a certain port? OS: Windows Web Server 2008 R2 No access to router (hosted box).
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1answer
263 views

Varnish Port Rediecting to 80

Running varnish on port 8888 for testing, apache on port 80 but when i type in [url]:8888, it keeps redirecting to [url] only. varnishlog shows the redirection as well. I'm thinking wordpress might be ...
1
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1answer
325 views

randomly occupied AJP port on server restart

I have 9 tomcat instances (fronted with apache and mod_jk) on a box which start with /etc/init.d/tomcatX scripts (where X is a [1-9] number). These scripts are simple: #!/bin/sh ### BEGIN INIT INFO # ...
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1answer
560 views

Redirect Traffic on domain port to entirely different ip/domain

I'm interested in knowing if I can force a redirect to different ip's for those clients that pass into certain port of my web server. Specifically I'm attempting to get all web(80) traffic to goto ...
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1answer
690 views

Web server redirect to port 80

I need help for this problem. My django applications using mod_wsgi, apache and reverse proxy using nginx. the nginx is listen to port 80, and our apps is live inside VPS. And the MOD WSGI is in ...
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1answer
665 views

Redirecting port 8080 traffic to a different server in AWS

I have two servers under the same domain name: Apache webserver listening to port 80 Node.js server listening to port 8080 What do I need to do in order to run each server on a different ec2 ...
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1answer
202 views

Random ports open on VPS box

I have a VPS box I just purchased. It is running Apache and SSHD on their default ports. When I do a port scan, I get results back that say port 139 and various other seemingly random ports are ...
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1answer
744 views

Can ping, can establish SSH connection in one way but not on other way

First of all, sorry about my english. We're facing a very strange problem with SSH connection between two specific servers. Let's say we have X1, X2 and Y servers. Where X1 and X2 are behind the ...
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1answer
598 views

Glassfish with Webservices on non default port

I have a simple web service that I created that deploys perfectly on a default Glassfish V2.1 install on both a windows and a linux system. HOWEVER, In the production environment, Glassfish has the ...
0
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1answer
58 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 ...
0
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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.
0
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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 ...
0
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1answer
40 views

Nginx M/Monit password protect

I am trying to protect access to M/Monit web interface: Box: ubuntu 14.04 nginx 1.8.1 mmonit-3.5.1 I created a mmonit config file under /etc/nginx/sites-available: server { listen 8080; ...
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0answers
72 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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0answers
37 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
65 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
171 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 ...
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0answers
121 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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98 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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34 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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0answers
79 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 ...
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200 views

Opening port 8000 for WCF on Azure

I created a virtual instance on Azure and deployed a couple of WCF services for testing, and also installed IIS. Then I added TCP endpoints for ports 80, 8000, and 8001. The services run on ports ...
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40 views

Many webapps, one vps

Might be a noob question, Google and SF searches didn't turn up anything super useful. Could be using the wrong words here. I've got a vps, with one port 80 app running on it. I'd like to add two ...
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0answers
351 views

OpenVPN Port forwarding on a OpenVZ VPS

I've been trying for the past 3 hours to forward the 443 port from my client to the 20443 port on my server (CentOS 7 on OpenVZ), so i can access it on myserverip:20443. I have OpenVPN Access ...
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71 views

Network access sometimes lost, disabling port security temporary solves?

I have network based primarily on Edge-Core managed switched. Port security with max mac count = 1 is enabled, DHCP snoopping enabled. Some clients have troubles with accesing network, but when I ...
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65 views

RPC Ports getting reset to 5000-5002 on reboot

I've run into a very common issue with RPC Endpoint Mapper ports not being available. The default RPC ports are 5000-5002. When I edit the registry and set the ports to a wider range (say, xx100 - ...
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311 views

Filtered port 22 with no firewall settings

I'm trying to connect to an sftp server from a CentOS 5.5 server. The connection is never established. When I run the command: nmap -p 22 -P0 <sftp server address> PORT STATE SERVICE ...
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4k views

Windows TCP Port 139 Netbios-ssn vulnerability

I ran netstat -b on my computer. Two results showed that I do not understand, VAIO being another PC on the LAN. [firefox.exe] TCP 192.168.100.106:49186 VAIO:netbios-ssn TIME_WAIT TCP ...
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126 views

Network Issues Connection to SQL database on MS server

Prior to asking this question, I followed this thread: Cannot telnet to SQL Server on port 1433 I am attempting to connect to a database on a server distinct from the computer upon which I am ...
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0answers
324 views

Port 80 Occupied

When trying to run Apache from the Windows Command Line, it gives the error (OS 10048)Only one usage of each socket address (protocol/network address/port) is normally permitted. : make_sock: could ...
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0answers
456 views

One public IP and two web servers

We have our IBM server (internal ip: 192.168.1.128) connected to internet via router (192.168.1.1). I have forwarded the following port: Port 80: internal IP 192.168.1.128 for incoming HTTP ...
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371 views

Iperf UDP listening on used port

I get WARNING[9157] chan_sip.c: Retransmission timeout reached on transmission error on asterisk and trying to troubleshoot the problem. Now asterisk is listening on 5060 port: udp 0 0 ...
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298 views

Occasional firewall spikes on ports in 40000 - 60000 range over VPN

I am hoping someone will recognise the description below and be able to tell me what they think might be going on.. I look after an office network, which has VPN access to a different network ...
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283 views

nginx loadbalancer is redirecting to the wrong port

I am trying to get the nxinx load balancer to work. I have the following configuration: upstream backend { server app-1.example.com:8001 max_fails=3 fail_timeout=60s; server ...
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156 views

iptables only partially redirecting ports

I am moving over everything that uses port 80 to port 9000 on my server, so I configured my apache + it's virtual hosts to listen to 9000 using ip xx.xx.xx.106, and I set up my iptables to preroute ...
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330 views

Using iptables to log traffic from port mirroring

I configured one port of my switch to do port mirroring of the other ports. I connected to this port mirroring a server where iptables has some rules. If some rules are matched, iptables sends to the ...
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1k views

Access Denied for Specific FTP Client

I have a couple FTP servers setup which I am unable to access using a particular client machine. The client is a Windows 2012 server in my company's network over which I do not have admin rights. ...