A port provides a location for an application to interface with the network. If there is no application that is listening at a particular point, data sent there will never be used.

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2answers
27 views

NMAP sees open ports, but netstat doesn't show listeners on them

I just scanned my PC remotely with zenmap, and see a number of open ports not related to any services I'm providing. Redacted list of ports: PORT STATE SERVICE 32/tcp filtered unknown ...
-1
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1answer
21 views

Why URL that reach specific port in front got https?

Some web hosting control panel must use URL https://example.com:3500 to reach it. If I do not type https, browser will not reach it. HTTPS is port 443. Is it port 3500 or port 443?
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2answers
57 views

Why other port in URL in front got http?

An example of a URL that links to a web hosting control panel: http://example.com:3500 HTTP is port 80. Why does it list port 3500? Is it port 3500 or port 80?
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1answer
10 views

java.net.BindException on app crashing and port already in use

I just ran a jar on a ubuntu server using a default port. The jar was stopped using ctrl+z. On restarting the port was already engaged and OS has not released the port for use. I want to use the port ...
0
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0answers
33 views

Cannot curl webserver from outside network

I have a webserver running on one of my home computers. I am able to access it within my network, on another computer, with curl localWebserverIP:8888. However, I am having issues accessing it from ...
0
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1answer
24 views

Monitor switch traffic load on specific port (CISCO managed switch)

For troubleshooting networks problems I need to know how to monitor the traffic (work load) on a managed switch. I read about SPAN for CISCO switches. But it seems to be overkill since it does mirror ...
0
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0answers
12 views

Streaming same video on four different ports with same IP

I want to stream a video on four different ports on a same interface and also needs to receive in the same way. I think receiving is OK as i can have socket but how to stream the video in that way in ...
0
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1answer
36 views

How could I test a port forward attempt was successful

I have set a random port number to a private IP address that's connected to my network. This device that exists at that private ip on the network is running linux. I setup this port foward from a ...
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0answers
15 views

port forwarding in ZTE F620

it have been for 3 days to make a port forwarding in my ZTE router and still there is no product. I want to open 80 port for one of my computer (which local adress is 192.168.1.11). ill give you ...
0
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0answers
26 views

Invalid HTTP response received from host on port 443

I am facing issue with my nagios monitor installed in centos 6 server saying HTTP CRITICAL - Invalid HTTP response received from host on port 443:. i have opened the port but still giving the same ...
0
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0answers
25 views

How to prevent Dropbox from blocking port 80?

I need port 80 for Apache and Dropbox uses the same port. Of course I could disable/uninstall Dropbox, but I would prefer to redirect it to some other port. Is it possible? I searched for "dropbox ...
0
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0answers
24 views

ntoskrnl.exe NT Kernel & System on port 80 blocking Apache server 2.4 on Windows 8.1

Windows 8.1 Apache 2.4 Both Apache and IIS servers had been working with no problems. I tried to start Apache for MySql and had a 'Request operation has failed' message. Tried to do a manual start ...
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0answers
22 views

Cannot open port 25565 and others

I try to open my Minecraft server and my gmod server ports. Now I only try Minecraft and I tried to open in 192.168.1.1 in Windows firewall. I went to this site: ...
1
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0answers
26 views

Nodejs remote debugging ports closed

I have a problem with nodejs remote debugging. I'm using centos on remote server and phpstorm on my PC. When I open putty I type the command: node --debug-brk=5858 main_server.js, and get the ...
1
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1answer
31 views

Send emails over port 80 using Linux command line

I have a server that is not allowed to send outgoing emails or have access to any name servers. What it has is an http proxy that allows it to access the other servers and I am able to do wget ...
0
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2answers
27 views

How to view the calling script on Linux [closed]

I am trying to write a script to help with computer security. I am trying to look for open ports, find the PID, and find what called it. I have it working, where my output looks something like this: ...
0
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0answers
11 views

Apache on Xampp unable to start on port 80 because some system process with pid 4

I am trying to start apache but it says that the port is used by process with pid 4. When i look for the process its a system process , and am not able to end it using task manager. So i changed the ...
1
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1answer
137 views

Multiple SSH ports for Synology Diskstation DSM 5.1

I have a Synology Diskstation that I recently upgraded to DSM 5.1 (5004). I previously had my system configured to allow connections on both port 22 and port 10000. After the upgrade, it appears that ...
0
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0answers
25 views

Cannot listen/use any port on my windows

I have windows 7, and my PC cannot use any port, i tried apache2, and it says it cannot bind to port 80, i changed to many different port, 8080, 81, 82 .... i tried mysql, same thing happened, it ...
0
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0answers
4 views

Is there a way to disable rather than switch off Listen in Apache config?

In my vhosts.conf file I need to override "Listen 80" set in httpd.conf but don't find a way how to do that. Adding another "Listen" directive works, but I just want to disable the "Listen 80" ...
0
votes
1answer
19 views

Adapter to VGA, minidisplay or HDMI?

I have a computer with HDMI and mini-display ports, and a monitor with only VGA input, should I get the adapter for the HDMI or the mini-display port?
0
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1answer
33 views

TCP server listen and client listen windows software

I am using Windows OS on an amazon cloud AWS with static public IP. On this machine I need to set up a TCP server to listen on port 2204 for raw data that will arrive from a GPS base station over TCP ...
0
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0answers
36 views

Access USB device from virtual machine (Windows 7 pro) while having host Linux (Debian 7)

I am a bit at loss to find where the problem could be. I have a computer running Debian Wheezy. I want to run a microcontroller debugger from within a virtual machine (VMPlayer 6.03). I am using a USB ...
1
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1answer
64 views

Make application use specific network interface

I have an openvpn connection and I need it to work only for one application, this app uses an specific local port. I used route-nopull on my openvpn config file and then: ip route add default via ...
1
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1answer
37 views

What's the netstat command to get the process name and only for a specific port?

I'm using netstat on Windows 7, I would like to get only the process which are using the port 80 and to get also the name of the process. Not only the PID. I've found this solution to add the process ...
2
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0answers
103 views

Port 4567 open on router to 'tram' traffic…Should I worry?

When I do a port scan on my router (nmap 192.168.0.1) the result is: PORT STATE SERVICE 22/tcp open ssh 23/tcp open telnet 53/tcp open domain 80/tcp open http 443/tcp open https ...
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0answers
15 views

Reverse port forward using windows

I've got a VPS (vps.mindfulhacker.tk) and I'm running a game server on my windows machine. IF my machine was running linux / mac, I could use the following command to make my game server accessible ...
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0answers
58 views

Port remains blocked after opening

I have a TP-Link WR841ND Router. To test a server, I've had to open port 69. When the router is connected to my internet at home, and I do the router's routine of opening a port (I know how, have ...
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0answers
24 views

DVR is visible LAN but invisible with WLAN

I'm trying to get a DVR (H.264 video surveillance system) a connection. Here should include ports 80, 34567 and 34599 open. I also have a forwarding address and the DVR is forwarded in my router so ...
0
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0answers
23 views

Maximum concurrent sessions to a web server

As far as I understand connecting to a web server, as a new session is established from a client to the web server, they form a socket with a receiving and sending port for each machine. As the ...
0
votes
1answer
86 views

Does NAT forwards ping requests and port scans to all subnet computers?

If I ping some friend's public IP address, this is usually the address of his router. Does the router forward the ping request to all devices on it's network? If the devices are all turned off will ...
0
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0answers
87 views

Netgear wnr2000v3 Router accepts Telnet connection but sends no data

A port scan of my Netgear wnr2000v3 Home Router reveals that TCP port 23 is open and running telnet as a service. When i try to connect to the router using Telnet (Windows built in client) the cursor ...
0
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1answer
16 views

Which criteria is used by the linux kernel to pick udp source ports?

They are all of course greater than 1024, but can we narrow this range a bit more? Via wireshark the lowest I've seen is 30XXX. Does the kernel specify it's criteria somewhere?
2
votes
1answer
60 views

Is forwarding to port 9 (discard) essentially the same as blocking a port?

My router (Linksys WRT1900ac) seems to leave port 4567 open, as discussed in this question. I'd like to block that port. Unfortunately I see no easy way in the Linksys admin console to simply drop ...
2
votes
1answer
87 views

If my DSL modem leaves a port open, how vulnerable is my router?

Port scans of my old Netgear router showed that port 4567 was open. I assumed my router was to blame. Now port scans of my new Linksys router show the same open port, which makes me think my DSL modem ...
0
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1answer
32 views

cli commands for Billion 7402GX

hope I've come to the right place. I have a Billion 7402GX which needs port forwarding done for CCTV. I can't find the Virtual Server section in the web gui. Is there a cli command I can use to show ...
0
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1answer
60 views

Why my iptables configuration for port-knocking does not work?

I implemented the following iptables rules on my test server for a course. The firewall shuts down and I cannot access port 22. However, after knocking on the ports 1111, 2222 and 3333 in that order - ...
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2answers
45 views

Determining what port is associated with a network interface

I have a computer with 4 ethernet ports in the back. How can I tell what network interface (eth0, eth1, ...) is associated with each port?
0
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0answers
37 views

Error assigning wpa.conf to port using wpa_supplicant?

I am very new to this sort of linux work and openwrt so any help would be good. So far I have a TL-WDR3600 router which is running open-wrt (openwrt-ar71xx-generic-tl-wdr3600-v1-squashfs-factory). ...
0
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0answers
22 views

port fowarding and start port end port where to put numbers

sony gave me this set of numbers tcp ports 10050,10051, 10040-10060 and on my set up looks like this external internal protocol start port end port ...
0
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1answer
90 views

Iptables to forward HTTPS traffic to remote HTTPS proxy

My goal is to use Iptables to take all traffic going to my server on port 443 and forward it to a remote HTTPS proxy server. So basically if I was to use my ip of 192.168.1.142:443 as a SSL proxy it ...
0
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0answers
28 views

installing trac on windows server 2012 with iis web server on port 80

I have a iis web server listening on port 80. I am installing trac via bitnamp and during the installation process it is asking me what port the bundled apache web server should listen on. the default ...
5
votes
1answer
251 views

What can the second LAN port be used for on a NAS?

I've got a NAS with 2 ethernet ports. I have one connected to the router. I read that the second could be connected to double the speed of data to and from the NAS. I don't need to do that, as the ...
1
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2answers
102 views

range of ssh tunnel port

I use ssh tunneling with : ssh -i <my_file> -R *:0:localhost:80 <my_name>@<host>. With the port = 0, the server assign me a port. How does the server choose and how can I config the ...
2
votes
2answers
227 views

Can't use port 8080 - what is running on it? (OS X Mavericks)

I'm trying to run Tomcat on port 8080 using cargo, but it gives the message: org.codehaus.cargo.container.ContainerException: Port number 8080 (defined with the property cargo.servlet.port) is in ...
1
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1answer
221 views

NodeJS and Apache on port 80 using different IP addresses - Apache needs port 80 clear even though it's configured to use port 80 of a different IP

I'm using a node.js app on port 80 of 127.0.0.2:80 server.listen(80, '127.0.0.2', function() {... And I want to use Apache on port 80 of another ip address, say 127.0.0.3:80, so I have this in my ...
0
votes
2answers
433 views

Stop Or Uninstall IIS for running Wamp Server (Apache) on default port (:80)

I'm runing an Apache server on Windows 7 using the WampServer application. I need to test some Asp.net Mvc applications so I active the IIS on windows... After that, the old Apache server that I had ...
0
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0answers
9 views

redirect MS SQL through Ubuntu

I'm trying to redirect a Microsoft SQL connection from local LAN to VPN via Ubuntu The Ubuntu has connection to both networks I want to be able to connect SQL from my PC to the Ubuntu and it redirects ...
0
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1answer
28 views

Is there any way to access many services from the same port?

To clarify: I am running apache on port 80 of course. I am also running DynMap on the same server. Is there any way to make it so that I can access it through port 80, or do i simply have to open the ...
0
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0answers
37 views

Opening a firewall port on virtualized Windows 7 running on Mac OS X 10.9

I am currently using a virtual machine running Windows 7 (32-bit) which is hosted by the VirtualBox application from Oracle; this latter is installed on a MacBook with the last up-to-date version of ...