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.

learn more… | top users | synonyms

4
votes
1answer
301 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
votes
1answer
98 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
votes
1answer
1k 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
votes
1answer
860 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
votes
1answer
890 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
vote
1answer
13 views

Accessing internally stored documents via hyperlinks in Websites on a DMZ server

We have a vendor-provided application running internally (LAN) on a Windows/MS-SQL 2012 server, providing access via IIS on the same box. The application is able to store attached documents - these ...
1
vote
1answer
27 views

Using AWS, EC2, can't reach port 1433 for sql server

we're using two AWS EC2 instances, win 2012 servers, one for MS SQL Server and one for IIS. IIS is unable to reach port 1433 on the SQL Server. Here's what we've tried: Checked VPC setting and no ...
1
vote
1answer
64 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
vote
1answer
134 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
vote
1answer
292 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 ...
1
vote
1answer
439 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
1answer
176 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
vote
1answer
1k 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 ...
1
vote
1answer
741 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
vote
1answer
295 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 ...
1
vote
1answer
75 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).
1
vote
1answer
270 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
vote
1answer
332 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 # ...
1
vote
1answer
574 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 ...
0
votes
0answers
89 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 ...
0
votes
0answers
227 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 ...
0
votes
0answers
18 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 ...
0
votes
0answers
58 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 ...
0
votes
0answers
69 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 ...
0
votes
0answers
353 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 ...
0
votes
0answers
75 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 ...
0
votes
0answers
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. ...
0
votes
0answers
183 views

IPA Server installation: Error with port number

When I am trying to install IPA server, I am getting the following error : IPA requires port 8443 for PKI but it is currently in use. Aborting installation I checked with netstat -tuplen | grep ...
0
votes
0answers
80 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 ...
0
votes
0answers
41 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 ...
0
votes
0answers
76 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 ...
0
votes
0answers
199 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
0answers
145 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 ...
0
votes
0answers
35 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
0answers
241 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 ...
0
votes
0answers
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 ...
0
votes
0answers
385 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 ...
0
votes
0answers
72 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 ...
0
votes
0answers
71 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 - ...
0
votes
0answers
402 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 ...
0
votes
0answers
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 192.168.100....
0
votes
0answers
132 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 ...
0
votes
0answers
341 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 ...
0
votes
0answers
492 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 ...
0
votes
0answers
391 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 ...
0
votes
0answers
320 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 ...
0
votes
0answers
307 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 app-2.example.com:...
0
votes
0answers
166 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 ...
0
votes
0answers
386 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 ...
0
votes
0answers
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. ...