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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Cannot start WebSite because port 80 is being used by W3SVC.exe

I have deverloped a website at work and we typically use port 80/443 for our websites (in development). This has worked well until today when starting the website gives me the error (IIS 7) This ...
4
votes
1answer
16k views

socket.error: [Errno 10013] Port forbidden access permissions

When trying to use a Python script I get this error: socket.error: [Errno 10013] An attempt was made to access a socket in a way forbidden by its access permissions I put the post on ...
3
votes
1answer
12k views

How to Password Protect USB Ports?

Is there a way to Password Protect the USB Ports in Windows 8 so that every time a USB is inserted a prompt comes out asking for a password before it can be used on the PC ? Is this possible without ...
3
votes
1answer
481 views

Why is my system using port 4?

I have Windows 7 and have noticed that my system is using port 4 to connect to a lot of different IP addresses. When it connects to them it is not for very long before it moves to another IP address. ...
2
votes
1answer
710 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 {P-...
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1answer
2k views

Windows Firewall inbound rules still blocks ports

I applied inbound rules for port: 1935, as well as outbound. When I check on canyouseeme.org, it says it (port 1935) times out. When I completely turn off Windows 7's firewall, it works without a ...
2
votes
1answer
911 views

USB hub assigning random com ports when Windows 7 PC or USB Hub are rebooted

I have four hardware devices that are plugged in through a self powered USB hub. Currently the devices are assigned COM1 COM2 COM3 COM4 through device manager as hoped. However, when rebooting the ...
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1answer
32 views

What are the default nmap options?

Which options are used by default, when the user fires # nmap target without any explicit option? I am going to write the defaults of the three options I consider the most important. It would be ...
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1answer
36 views

Port not open but still able to download : how does it work?

When using p2p softwares such as a torrent client or emule I am unable to open ports even if I allow them in my firewall and forward them in the NAT configuration. Even after doing those two things ...
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1answer
327 views

NMAP Always says host is down (when using -Pn it says ports filtered)

I am running Kali 2.0 (Kali sana) and I have problem with NMAP, it everytime says that host is down when i scan it (even myself with firewall off)... When I try online nmap (https://pentest-tools.com/...
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1answer
156 views

Port Forwarding on a dd-wrt Router

I want to be able to forward port 5678. Here's my equipment and details: Modem: ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem Router: Cisco Linksys E2000 DD-WRT v24-sp2 OS: Windows 10 ISP: Cox ...
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vote
1answer
133 views

Wake on WAN refusing to work. WOL works

Trying to setup WoW and I'm running out of ideas. I can wake it up on LAN so I know PC is setup right. I have forwarded ports 7,9 and 4343. Put in DMZ. I have tested when PC is on it does receive the ...
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1answer
133 views

Apache wont start, port 80 in use by a system process, found baiduspider

Ok so I have uninstalled IIS on my windows server and decided to try Xampp to host my domains. Port 80 is in use and I have tried all of the fixes that I have came across for the past 2 days. I was in ...
1
vote
1answer
420 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 ...
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vote
1answer
856 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 ...
1
vote
1answer
286 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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0answers
2k views

Port forwarding on a Huawei EchoLife HG8245

The problem is port forwarding in my EchoLife HG8245 router. I am able to port forward, and I know it works. But after some time I've came with the conclusion that my router only accepts 1 connection ...
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0answers
25 views

USB port cut on

I need to use my computer to charge several items. If I leave my computer for any length of time it shuts down Of course the things charging stop the charging process and I have t cut my system back ...
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0answers
841 views

Port forwarding on Parallel Desktop

My situation is like this. I have a Windows 7 VM run by Parallel Desktop, on which I run ASP.NET on localhost:1240 (Visual Studio development server). Is it possible from my host machine (OSX 10.9) to ...
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0answers
464 views

UDP port binding to loopback interface

I've been trying to play a video game in multiplayer, but after trying a lot of time, I begun to realize there was some problem with my loopback interface (Windows 7) I have UPnP activated in my ...
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0answers
60 views

Hiding port number from address.

I have centos 6.5 running some web apps. Currently due the following port forwarding rules, I am only able to access my public content using 127.0.0.1:8080/ Is there anyone to just use 127.0.0.1 ...
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0answers
122 views

What ephemeral ports do Steam & Valve games use?

I need to know exactly which ports are ephemeral so that I can create QoS rules. This page doesn't state which are ephemeral. I know that some of those ports such as 28960 are static ephemeral ports.
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373 views

Routing home server through VPN to bypass blocked ports

I am currently running Windows Server 2012 R2 in a virtual machine on an iMac. The server is serving a site using IIS as of now and I would also like to host an email server with it. Now, the problem ...
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0answers
453 views

Observing Output Current/Voltage from USB Port

I am working on a project where i am required to observe the current draw from a circuit. In a lab, I have access to power supply/multimeter and can easily check how much current is being drawn from ...
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0answers
173 views

Pow server - my site need port number for .dev

there, I am new to Ruby and trying to use Pow in my Mac. When I type MYSITE.dev/ in my browser, it always says "The connection was reset". But it works fine for MYSITE.dev:20559. It seems that I can'...
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96 views

Port forwarding : open port without any response

I've been playing around with my router recently to be able to access my localhost (ran by xampp) from outside. I've managed to open ports 80 and 443 and I've confirmed it with http://www.yougetsignal....
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266 views

Send traffic over specified connections by port

I am currently at a college with an extremely restrictive network. No outbound ports are open except 53, 80, and 443. I can't do any of the things I'd like to do like FTP, SSH, etc., which is ...
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50 views

Tunneling a license based on smartsniff output?

I use ssh tunneling through putty in windows 7 to connect windows desktops at work and have been able to use ssh-tunneling for a matlab license in the past as well. However, now I had a program (...
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0answers
72 views

USB 3.0 static discharge?

I built a computer last year and for the most part it's been working fine. However, there is one particular usb 3.0 port on the front that's been giving me headaches: when I plug in my portable hard ...
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0answers
187 views

My computer cannot connect to a Telnet host

I need to connect to Telnet server for my university studies at the University of Birmingham but everytime I try to connect I get : "could not connect to the host on port 23". What can I do ? Thanks ...
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0answers
75 views

Security risks and prevents for sending files over sockets

I am attempting to do Raspberry Pi development and at the moment, I'm normally writing all of the Python code on my laptop and then would have to use a SSH client to send the files across. I've ...
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0answers
118 views

Residential ISP possibly blocking SSH and other odd high ports - how to verify?

I have recently had a problem in a scenario where I am having to run SSH and some other high number port services behind a residential connection. I am suspecting that the ISP is performing some level ...
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245 views

Is it possible to use mic port as audio (out) port?

I mean programmatically change the ports. -> set mic-port as audio or line-in as audio?
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221 views

Send data from file to local UDP port

I've got an application, A, that listens on a user-defined UDP port for a specific message that normally comes from another application, B. Application B has a tool that allows recording these ...
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0answers
244 views

Port is listening, but owned by no one

Preface (skip for the real problem): I have an application that is listening to port 843. This process is run as root. Sometimes killing the process (with ^C) leaves it hanging for a long time (...
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0answers
94 views

SSH into Linux box from EC2

I can't seem to ssh from my ubuntu EC2 server into my work linux box. From my work linux box, I can ssh into myself via ssh -p <my listening ssh port> <user>@<my ip> The same ...
0
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0answers
5k views

Connection refused (WSAECONNREFUSED) OpenVpn connecting refused by server side

OpenVpn Gurus, I successively configured my Openvpn server.ovpn and client.ovpn files and all other required certification files. And I could load them on my server computer. Please first have a ...
0
votes
0answers
219 views

Why doesn't my computer see all USB devices (27 3G modems)?

I have a (Dell) laptop with 3 USB ports. There are two USB hubs connected (13 ports each, hubs are powered by external electric source); so in total there are 27 USB ports (13+13+1). Each port has a ...
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0answers
556 views

My mac has port 49176 open, what is it?

Does anyone know what port 49176 means on a Mac? I cannot find any info on this particular port. I'm on Mountain Lion, and using nmap from Ubuntu machine to test the Mac's firewall. This is what nmap ...
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0answers
471 views

Change the speed of USB ports

I'm working with a custom made board that isn't USB 2.0 compliant. I was suggested by the manufacturer of the board to change my USB ports to "low speed mode" as I see frequent disconnects with the ...
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0answers
172 views

Opening a specific port on Mac

I need to open a specific port on my mac client (because when I try to connect from server it says "target machine actively refused it ").My problem though is I cannot find a way to add a specific ...
0
votes
0answers
1k views

Intel Rapid Storage Technology (IRST): puzzled over port number assignements

I am using the tool Intel Rapid Storage Technology (IRST) v9.6.61001 to display the current status of several disks that are built-in and/or connected to a Lenovo W701 Model 4323. The status window ...
0
votes
0answers
2k views

Port forwarding on D-link DIR-615 router

I'm attempting to configure my router to forward a port to my Linux machine. The Linux computer has a static IP (192.168.0.185) Right now I'm just experimenting to make sure I can forward a port, so I'...
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0answers
1k views

How to persistently configure port speed / duplex on a Billion 7800[n] router?

I have been struggling for a while with port speed / duplex mismatches between a Billion 7800 and Cisco 2924. The basic problem with the Billion is that neither the web interface nor the available ...
0
votes
0answers
461 views

Is it possible to transmit more than 60Hz on a HDMI port?

Is it possible to transmit more than 60 Hz to my LCD through the HDMI port on my laptop? Somewhere I've read that I need to have a HDMI 1.4 cable to do that – but I haven't found anything like this ...
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0answers
153 views

Cannot connect to smtp server?

I have setup a dedicated SMTP server with the command: sudo dpkg-reconfigure postfix But my problem is with sending a message using the AMS sender program. I can send email through 1 ip address. ...
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0answers
1k views

Can not connect to some ports on Local Area Network

I have 2 PCs connected by a switch. PC1--<-->--Switch--<-->--PC2 Both PCs have Windows 7. Both are able to connect and share files with each other. Both PCs can connect via remote desktop. ...
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0answers
1k views

How to Change SIP default port 5060

Port 5060 is blocked in our network, and I was wondering if it was possible to change it to 5222, which is a port used by Google Talk. If it is possible and I do change it, will I still be able to use ...
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0answers
17 views

All ports are closed

I got some peer to peer problems after that i tried to check my ports here is what happened. i have checked my ports with these tools: http://www.yougetsignal.com/tools/open-ports/ Portforward checker ...
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0answers
17 views

Serial port info in Ubuntu

my first post. This is the actual code: int Open( //Serial port name. const char* pPortName, //Is IEC or DLMS used as starting protocol. bool IEC, //Maximum ...