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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nginx - connect() failed upstream under load testing

I've been doing some load testing with wrk of my nginx reverse proxy -> my web app setup and I noticed that when I get to 1000+ concurrent connections, nginx starts returning 502s and the following ...
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49 views

cannot bind a port altough LISTEN

I'm new to this problem I'm using Ubuntu 12.04 LTS via VMware My problem is to bind port 6703 i tried alot of commands to check if this port or open or not Error Message is Failed to bind to: ...
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21k views

Cannot telnet to SQL Server on port 1433

I've been working solidly on this issue for the past three weeks. I cannot seem to find where the actual issue is. I just recently found this article on how to troubleshoot the connection. I made it ...
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207 views

Deploy multiple applications in Cherokee and distinguish them by port?

I am having an issue on deploying applications with Cherokee web server. The thing is I need to host various Django applications in the same machine and distinguish each one by ports (i.e. app1 in ...
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31 views

How do you allow all non-standard port traffic via forward proxy?

when the proxy is set for http and https traffic (say on a tomcat app), is this only for standard 80/443 traffic? I was wondering what ports you have access to when you set the following attributes ...
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51 views

Watchuguard access to external server from internal network

It looks, like my problem is common, I tried every single hint I found, but nothing is working. Here is my problem. I have an internal network behind Watchguard m400, with few VLAN's on ports. I ...
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27 views

gitlab port forward tom foolery

We have a public-facing web server (CentOS 6 w/ Apache) that will need to forward requests, both from public and a private interface, to a separate host that's running Gitlab. For security purposes, ...
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143 views

How to proxy setup nginx with play and angularjs

I am learning play framework and angularjs with nginx. The play app is running on port 9090 and angularjs app is running on 9000. I am trying to proxy all requests to /app/* to the back-end Play ...
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72 views

How to redirect subdomain to other port using Apache2 server with reverse proxy

Thanks in advance for your help. I have, in my home server running Debian 8, installed Deluged (torrent client) and a web UI to control it. I can access this web UI using the address ...
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68 views

Is firewalld blocking return traffic?

I'm on Debian 7 trying to forward requests to other machines through firewalld and have the following setup: --HOSTNAME-- ----IP----- ------------Configuration------------- Firewall 192.168.0.2 ...
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129 views

Nginx listening on different port but not accessible from outside

OS: Ubuntu 12.04 I have both Apache and Nginx running. Apache is listening on port 80 and that is why I want to make Nginx listen on different port, in this example it would be 90. Below is the ...
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101 views

How should I set up my sub-domain to allow it listen on a port for web socket transfer?

This may be a really beginner question, but I really want to make sure I'm going in the right direction before investing time in this. Heres what I have. charlieli.me @ 45.55.33.185:80 ...
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93 views

Error when viewing database mirroring monitor in SQL Server with non-default port

I have database mirroring set up (with witness) on SQL Server 2014 Standard. Both servers use default instance on a non-default port (not 1433). Mirroring works perfectly fine. However, when I try to ...
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37 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 ...
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56 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 ...
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309 views

“connection closed by foreign host” on one port but not another

server1 (suse linux) should be able to connect to server2 (redhat linux) on ports 4750 and 1080. when server1 connect to server2 (using telnet as a test) using 4750, the connection stays up and open. ...
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52 views

Cisco multi switch / multi VLAN monitoring

I have a DMZ and a internal LAN with VLANs that I wish to port monitor by means of a NIDS and three switches, if this is possible. Switch 1 (DMZ) 2950 / VLAN 10 & trunk port to Switch 3 Switch 2 ...
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1k views

Nginx secure port 443 is not opened/ connection refuse

I have installed nginx on my ubuntu VM. There I want Nginx to listen 443 port. My configurations are as follows. server { listen 443; server_name wso2test.com; ssl on; ...
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502 views

Trying to change a custom VPN port back to the original on Fortigate 40C

We recently changed our firewall and bought a Fortigate 40C device. We wanted to use our old VPN settings. The Fortigate support technician told us that this model was new and he didn't know it in ...
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55 views

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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4k views

How to reverse proxy specific ports to a different server behind a firewall using Apache mod_proxy

I have two Web severs, one Apache 2 and the other IIS 8, and both are on a LAN behind a firewall. I have ports 80, 443, and 8080-8088 open on the firewall. I have an externally hosted DNS A record ...
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94 views

forward a specific port from linux server (ubuntu) through firewall server (ubuntu)

I'm doing the following: % autossh -i YYY.pem XXX@SERVER -N -R 90:localhost:9000 -o ServerAliveInterval=30 to forward a server port from the local machine to the public machine. But connections ...
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41 views

Java BindExceptions in delayed stop/start conditions

I have a script that will automatically stop a server and restart it on the same port/ip address. I've noticed that some mornings the server doesn't restart successfully because it gets Java ...
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1k views

Port seems to be in use although the corresponding process has already terminated on AIX 6.1

While running some kind of automated tests on our AIX 6.1 machine we are facing the problem that a port seems to be in use although the corresponding process has already terminated. E.g. if we kill a ...
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94 views

can't connect to a server through specific port

From my server I'm trying to connect to another server I'm trying using the command via SSH telnet 64.31.62.219 60099 it is connecting without problem on my local machine and from a server I ...
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3k views

How to open ports in Cisco ASA 5505 using ASDM?

am new to cisco and i badly need help in opening ports using ASDM. I already tried natting but it only allows 1 outside and 1 inside rule ex. Inside Static Rules 10.x.x.x outside 72.x.x.x Outside ...
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442 views

Cisco ASA 8.4 Port Forwarding Site-to-Site VPN

I have a Cisco ASA (running ASA 8.4) which has a Site to Site IPsec tunnel to three sites. These sites have overlapping address ranges, so on my ASA I have setup NAT so everything is accessible. I ...
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260 views

ejabberd changing ports?

I changed the ports in the listen section (just added a 1 in front of them) in the /etc/ejabberd/ejabberd.cfg, but after a /etc/init.d/ejabberd restart The server still listens on the original ...
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611 views

VisualSVN Port Forwarding is Not Resolving

I am using the FreeDNS Update client to dynamically update the IP address of a subdomain. I can access https://localhost:8282/svn/ on the laptop but I cannot access it from ...
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300 views

Is it fundamentally wrong to ask an FTPS client to connect on port 990/989 using explicit mode?

I have recently setup vsftpd to listen on port 990 for FTP over explicit SSL. I know from the RFCs that 990 is normally used for implicit. However, we have other FTPS servers accessed from the ...
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170 views

Trying to connect to sql server on ec2

I moved from my home office to an office in midtown. I can't figure out how to connect to my sql server hosted on Amazon. I'm using the exact same VmWare image just on a machine in the office. I can ...
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980 views

CruiseControl doesn't run as a Windows service

I am having a problem with CruiseControl on Windows. I can get CruiseControl to run on its own without problems right after installation. However, when I run the Windows service for cruise control ...
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11 views

Block port from the outside except Docker

I installed a jenkins via Docker on my server and assigned to a specific domain (jenkins.mydomain.com), which works perfectly fine. But I can also reach jenkins (and every other service in docker) if ...
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18 views

Apache vhosts redirect to www.domain.com:PortNumber/

I'm having the following problem with Apache 2.4. I have set httpd.conf file to listen to 2 more ports (8081 and 8082) like this: Listen 80 Listen 8081 Listen 8082 DocumentRoot "C:/xampp/htdocs1" ...
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22 views

Redirection of ports does not work

I have a VPS, and by some reasons common ports (1 - 1000) are closed. I installed iRedMail, but did not find any ways to change smtp submission ports, so I decided to just forward connection. I have ...
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37 views

Rtmplite and Open Broadcaster Software

I'm messing around with Rtmplite (found here), a Python implementation of an RTMP server. I'm doing this because I have an old computer running SunOS 5.10 that I want to use to stream a friend's ...
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22 views

Port is listening but not Open

Port Info I am trying to open port 9121 for a minecraft plugin votifier... Currently the site that needs to connect to it can not. I am a total newb to this.. but this just makes no sense to me ...
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52 views

LetsEncrypt adding new Cert without killing Service

I use Let's Encrypt for my HTTPS certificates and every time I add a new cert or update a existing one I must stop my HTTP server on port 80 and start the Let's Encrypt script. I want to add new ...
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183 views

Git Failed to connect to 127.0.0.1 port 8087: Connection refused

I'm installing the array database rasdaman, when I go to the step "make" , it begins to: git submodule update --init --recursive Cloning into 'third_party/googlemock'... but I don't know what ...
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28 views

Why can't I disable routing/route or ndp on OmniOS? (Illumos)

I'm trying to harden this server and eliminate unused processes. I've been reviewing the output of netstat -a and see several entries under UDP and TCP with State LISTEN. I've disabled most of the ...
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54 views

nginx location regex with redirect to specific port

I have a problem using nginx in combination with location regex and x-accel-redirect feature. Below is the description of my setup. I have nginx running on port 80 on localhost. I have a http server ...
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10 views

SOCKS4 can't handle connections all going through the same (open) port

I live behind a firewall and I managed to proxy anything I do to the proxy behind the firewall. The Port 27032 is open and still, if there are too many connection requests at a time, the proxy can ...
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70 views

Dumb Switch to Smart Switch - Ports going up and down, what's up?

I just switched from a dumb switch 10/100 to a smart switch HP 1920-24G-PoE, and noticing ports going up and down randomly. I can't see any obvious reasons why this is happening so am curious if ...
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153 views

Why would Windows Server 2012 not respond on ports above 6000?

This is a new question but similar to this previous one. I've inherited the management of a Windows 2012 Server (not R2) and I'm unable to get a response from any ports above 6000. I have services ...
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15 views

Too many internal connections with apache server on ubuntu/azure

My apache/wordpress server running on ubuntu 15.10. on azure is periodically running out of memory. One thing that is puzzling me is the large amount of apache processes even though there is no ...
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40 views

server 2012 not receiving data on specific port

I installed a windows server 2012 r2 standard + sql 2008 r2 standard on a new dell server for a client of mine as regular workgroup file server (not acting as a Domain Controller) 3 months ago and all ...
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43 views

VPN Server not working on AWS

I'm running SoftEther on my home computer and after some basic configuration (Server 2012 R2, ports forwarded to server), everything works. I am able to use my computer as an L2TP server. I tried ...
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307 views

Endpoint creation doesn't work in Azure Preview Portal

I'm trying to open up port 443 on an ubuntu setup using the docker quickstart for wordpress + mysql. Because my VM is classed as "new" it only shows up in the new preview portal on Azure and doesn't ...
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55 views

interface not showing on port-channel (dell S5000 switch)

Our trunk went down due to a faulty cable, but when we had it replaced, the interfaces (speficially TenG 0/4 and /5) are not being shown on the port channel group even if they are physically up: Our ...
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28 views

Cant configure NAT in iptables

Есть два сервера с линукс. Первый выполняет роль роутера, он имеет два сетевых интерфейса, один из которых подключен к интернету, другой к локальной сети. Второй сервер подключен к локальной сети. ...