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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9k 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
330 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. ...
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votes
1answer
336 views

Use of ephemeral port for server

In general ephemeral ports are used by clients when establishing connection with the server. For example: Server listens on port 80 A client (browser, FTP client, bittorent client) send a request ...
2
votes
1answer
888 views

Cannot access Mongodb from internet

I am using Mongodb database ,which is installed with the ip address 126.22.252.25. The Ubuntu version info is 12.04.3 LTS. My Mongodb uses the default 27017 port. On this local machine I can use ...
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1answer
59 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 ...
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1answer
316 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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1answer
223 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 ...
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1answer
385 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 ...
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1answer
428 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 ...
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1answer
129 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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1answer
892 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 ...
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1answer
80 views

Linux distribution detection with Nmap

When I run Nmap with OS detection it delivers the kernel version of the Linux host instead of the name of the Distribution. Nessus does Os detection based on banners ...
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1answer
460 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
1k views

TCP/UDP ports that cannot be bound (permission error), but don't show up in netstat

When attempting to listen on certain TCP or UDP ports, I get weird error messages regarding permissions (or generic messages, depending on the program used to bind). The message in German is "Der ...
1
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1answer
806 views

Windows 7 - Can't get response from local servers after restart - Always timeouts

After a long uptime and the installation of some Windows Updates no local server is working. My development system is a Windows 7 x64 Professional installation. I had a full working XAMPP set-up ...
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vote
1answer
488 views

Restricted ports to non-admins on Windows 7

I work in a restrictive desktop/network environment and I am not an admin on my laptop. The ports available to me are limited. E.g. when I tried running Tomcat, the system refused to open a socket ...
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1answer
55 views

Make a program use other ports

My school network is behind a very strict firewall, and I can't connect my e-mail and other programs. Are there any ways to avoid this problem?
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1answer
1k views

Macports gives “sudo: cannot get working directory” error, then fails

Macports doesn't work: sudo: cannot get working directory shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory error getting working ...
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1answer
205 views

Would an USB external graphic card disable the on-board graphic card?

I am trying to connect my Dell Slim Studio 540S with 3 monitors. Would an USB external graphic card like this Sewell USB to Display (video) disable the on-board graphic card in the Dell Slim Studio ...
1
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1answer
479 views

Failed to open my port for upload purpose \ UTorrent

when doing the download\upload test in UTorrent program it claims my port is not open (Default 17690). After I plugged my machine directly to the modem (suspect of port forwarding not working), after ...
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1answer
371 views

MySQL error 2003

I have PC with MySQL running on it (on localhost), there is also Java App, that uses db and connects to MySQL without problem, but when I try to connect via command line(cmd) I get this message: ...
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1answer
20 views

How to invoke Privoxy?

I have installed Privoxy on Windows 7 64-bit and by searching through it's docs I have found that i need to enter some command line arguments to install the Privoxy service. Now, where and how do I ...
0
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1answer
50 views

PF: Can't open port on OS X

Have troubles opening the port 9 on os x 10.10.3 yousemite using pf firewall. I want to do this for being able to get wake-on-lan packets to this port. I assume that for WoL to work the port (on the ...
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1answer
85 views

Set up wake-on-lan for mac os x via Actiontec T1200H Router: Ports 7 and 9 are closed

I've got two macs connected to home wireless network via Actiontec T1200H Router. Both macs support Wake on Wireless (in About this Mac-->System Report-->Network-->Wi-fi-->Wake On Wireless: ...
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1answer
16 views

MySQL: Port issues on an domain network setup

I am looking for options to have a MySQL server on corporate environment where opening a port in the Windows Firewall is quite difficult (a lot of red tape). At this point I am not looking to have a ...
0
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1answer
23 views

change audio output ports from mic to front

Lately my front audio jack has died. The microphone jacks still works seamlessly and I would like to remap the front speakers output to the microphone if it is possible. I use Ubuntu and I have Aspire ...
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47 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
59 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
146 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
64 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
108 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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0answers
221 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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0answers
166 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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197 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
91 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 ...
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0answers
4k 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
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0answers
183 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
451 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
353 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
165 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 ...
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0answers
4k views

Simple way to open Port for Transmission for a Mac Snow Leopard

I am a complete noob when it comes to TCP/IP, but would like to open up my port for the Transmission bit torrent client on Snow Leopard Mac. Also, I am based in the UK if that has any relevance.
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0answers
944 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 ...
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0answers
1k 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 ...
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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 ...
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0answers
383 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 ...
0
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0answers
144 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
949 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
874 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
14 views

HP Probook 4510s

Since morning I'm not able to use Internet in my laptop.I use a local company broadband LAN connection.Generally when connected two lights blink at the LAN port (green n orange) but now only the ...
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0answers
21 views

What port does the DOCSIS 3.0 update come through on a firewall?

The problem is my cable company tries to push updates to a cable modem that they don't own which causes home network problems. Is there a way to block their DOCSIS updates, but not the ones ...