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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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 ...
7
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7answers
11k views

WWAHost.exe using same port as Apache

I have installed XAMPP 1.8.1. on my Windows 8 64bit machine. I'm now facing a problem with ports. This is what I got from XAMPP Control Panel: 11:52:43 AM [Apache] Problem detected! 11:52:43 ...
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85 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 ...
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1answer
75 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 ...
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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?
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1answer
85 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 ...
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1answer
31 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 ...
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1answer
58 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
625 views

How to make a QOTD server or similar

QOTD ("Quote of the Day") is a protocol that can be open on servers by default on port 17. I have googled and googled and for some reason there is pretty much no information on how to make a server, ...
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2answers
73 views

SSH Connection refused wrong port

I want to connect to remote server through Ubuntu shell. I am using ssh root@serverIP in Ubuntu shell but I receive this msg: connect to host xxx.xxx.xx.xx port 22: Connection refused This IP is on ...
12
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7answers
43k views

Apache Server on Windows 7 opening up ports?

I have installed Apache 2.2.14 on Windows 7 and can view my web pages using both http://localhost and http://127.0.0.1 but when I try to access the server from another computer on the same router, it ...
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3answers
4k views

Remote desktop solution which works with port 80

The corporate firewall where I work won't allow any programs to access any ports other than 80. This is a real bummer because when I try to remote in to external machines, using either LogMeIn.com or ...
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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). ...
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1answer
624 views

Win 2k3 Connections Limit per ip:port

I want to limit connections number per ip on specific port. Should I use some firewall or anything else? Advice please. P.S. Port doesn't have to be port 80, or 3389. It can be any port
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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 ...
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1answer
85 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 ...
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2answers
1k views

How to remove IIS for WampSERVER?

I have WampServer installed, and I installed Microsoft SEO Toolkit, I guess that has the IIS dependency. And I guess the iis service uses port 80. Now every time I start WampServer, I need to go to ...
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0answers
27 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
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1answer
242 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 ...
0
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2answers
409 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 ...
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2answers
94 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 ...
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2answers
212 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 ...
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1answer
256 views

what can filter a port on Fedora 19 besides router, firewall and selinux?

I am trying to use seafile which seems very nice. Unfortunately I have an issue that I fail to explain. From my two fedora 19 machines, nmap says port 12001 is filtered on the distant (say private) ...
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1answer
214 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 ...
35
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6answers
85k views

Test if a port on a remote system is reachable (without telnet)

In the old days, we used telnet to see if a port on a remote host was open: telnet hostname port would attempt to connect to any port on any host and give you access to the raw TCP stream. These ...
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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 ...
12
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1answer
697 views

Determining what process has bound a port (without listening) on Windows

If I want to find out what process is listening on what socket, I can use netstat/TCPview and will immediately see it. However, it is possible to bind to an address without listening. If this is done, ...
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1answer
27 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 ...
6
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3answers
8k views

Figure out non standard ssh port

I have this server that is configured to use another port instead of 22 for ssh. How may I figure out which port number it is?
4
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1answer
4k views

Why is “nc -l xxxx” not opening a port?

I'm trying to get netcat to listen on port 4444, but it doesn't seem to be working. I am checking to see if the port is open using nmap, but it doesn't pick it up and I can't figure out why. I have ...
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4answers
2k views

What is ::: in the Local Address of netstat output?

This is the output of netstat -tulpn that I get: tcp 0 0 127.0.0.1:2208 0.0.0.0:* LISTEN 2055/hpiod tcp 0 0 127.0.0.1:631 ...
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1answer
43 views

UDP port scanning

UDP is connectionless, so I can't expect a response packet, necessarily. If the port is closed, I might get an ICMP error message, but if the firewall could silently drop the ICMP packet How could I ...
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0answers
36 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 ...
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0answers
132 views

Nmap shows 554 and 7070 open on EVERY machine even when they are closed/filtered

Every single machine I scan shows port 7070 and port 554 as open regardless if the ports are closed/filtered. It will still show those two ports as open even if the target is offline (and the scan is ...
1
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1answer
86 views

What cable do I need for this port?

I have tried to plug a monitor to a Dell computer into the VGA slot and I have received this message: This computer has an add-in graphics card, but the monitor is plugged into the integrated video ...
1
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1answer
39 views

opened port on router for java socket

I am trying to make a peer to peer application and I want a port to exchange connection information and I want to ensure that this port would not be closed from the firewall on the way between peers ...
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2answers
51 views

What type of port has a logo with one long line and three short lines under?

On the side of my laptop (ThinkPad x40) there is an odd place for connecting wires, directly under one of the USB ports. The port looks similar to those for USB, with a similar rectangular shape and ...
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2answers
2k views

Can't load Fiddler because Fiddler Port in Use

Windows pop-up message as belows: Unable to bind to port [Localhost:8888]. ErrorCode: 10048. This is usually due to another service running on this port. Run NETSTAT -A at a command prompt. What ...
4
votes
2answers
4k views

Does it matter what UDP port a WOL signal is sent to?

i have seen many WOL instances use port 7 and many use port 9, does it matter? Isn't it just looking for a WOL packet at layer 2 or ethernet?
5
votes
3answers
3k views

Open port 5672/tcp for access to RabbitMQ on Mac

I have RabbitMQ in its latest version installed on my Mac with default configuration and when I'm accessing it from localhost there's no issue what so ever. But today I build a linux machine on local ...
0
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1answer
31 views

COM Port in use

When i am trying to install a particular software in break stating that COM PORT 3 is in use and to stop any app that is using that. In Windows 7 PC Question How can I find which application is using ...
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3answers
700 views

How to determine why port 443 is already in use?

I'm running Apache 2.4.10 on a Windows 7 machine and am trying to add SSL connections. Port 80 connections work fine, and I'm trying to add port 443. When the httpd.conf gets Listen 443 added it ...
6
votes
2answers
3k views

Why is there electricity flowing through my VGA and other ports?

I am using Windows 7 on a Sony VAIO laptop. When I connected my PC to the charger, I felt a little electric shock when I touched the VGA and other ports. I tested with a current detector and found ...
3
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1answer
3k views

What is the difference between Port and Connector?

I want to know the difference between Port and Connector in Computer (the physical ones),and how can i tell that this thing is a port or connector ? I know that both terms are used for the same ...
0
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1answer
523 views

What ports does WeChat use to transfer data?

I want to block the messenging service, wechat, on my netgear router. Does anyone know the TCP/UDP ports that wechat uses to communicate? WeChat is a Chinese messenging application developed by ...
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votes
1answer
266 views

How i open a port (port forward) on this specific router

http://gyazo.com/86e63e79d11835ec9ab71e0b8680cc8d here is a pic of how my router looks like i cant find it in this one. I know how to open ports on my other routers. Please help Model:Home Station ...
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0answers
11 views

Multiplatform: Is it possible to perform network scan for a certain open port on a certain IP address with just one click?

When I want to scan for a certain network's open port (say 8080) in a certain IP address (say 111.222.111.222), I go to http://www.t1shopper.com/tools/port-scan/ And I fill the fields port ...
0
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1answer
223 views

Using Telnet: Port number

With using telnet I used port 25. Example: telnet x.x.x.x 25 I had another server today that used port 23 instead. For the future, how would one easily know which port to use? Does this port ever ...
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2answers
132 views

Torrent ports and firewalls

I use this uTorrent program, under its settings 'Listening port' I set up a port of 46301, and also open that port in firewall. But whoever connects to me to leech, they connect to random ports ...