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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Running a server when all computers have the same WAN ip

I want to run a server on my machine so that anyone in the Internet may connect to it. But my Broadband internet provider issues the same WAN ip to all the customers while each of them has a different ...
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1answer
1k views

Apache can't bind to address [::]:80, already in use

I run sudo /etc/init.d/apache2 start and get this: Starting httpd2 (prefork) (98)Address already in use: make_sock: could not bind to address [::]:80 (98)Address already in use: make_sock: could not ...
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1answer
119 views

Open Port \Win 7

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), ...
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1answer
473 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 ...
0
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1answer
204 views

Redirecting a port to a remote server on windows

I only have command line access to a server and I'm not allowed to disable the antivirus (which blocks netcat). What I would like to do is have a program that listens on port A and when a remote ...
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2answers
2k views

How to list all I/O ports in windows/linux?

We can use netstat to list all software ports,but how to list all hardware ports,is there such a tool?
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4answers
467 views

Listening on port 22

Is there any way to listen in on port 22, on my server, to see if anyone submitted any commands while ssh'd into my server? Or rather, output what commands were submitted (and the ip address of who ...
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1answer
1k views

Why do I get an “Access Denied” message intermittently? How can I change this? Should I?

Windows XP SP3 I use utorrent. Occasionally, in the logger I will get this message: "Error opening Windows firewall: 0x80070005 Access is denied". It is not always there, it is intermittent. Can I ...
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2answers
2k views

Postfix ports configuration

I'm using postfix to send emails. So, and correct me if I'm wrong, I'm using port 25 TCP inbound for entering emails, and port 25 TCP outbound for sending emails. Is it possible to alter the 25 ...
2
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2answers
159 views

Check available network ports in Windows

Administrator is blocking some network ports, but some are left open (e.g. 80). Is there a portable utility to check what ports are blocked? Using Windows 7 32-bit
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1answer
589 views

specify rsync source port

I realize that rsync uses port 22 as its destination port (as I use -e SSH to encrypt my channel), but then, as I would expect, the source port seems to be a random numbered port well above 1000. I ...
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2answers
614 views

So port is not unique by machine at all?

$ lsof memcached 15844 root 28u IPv6 113604 TCP *:11051 (LISTEN) memcached 15844 root 29u IPv4 113605 TCP *:11051 (LISTEN) memcached 15844 root 30u IPv6 113609 ...
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3answers
311 views

web server not responding

I am setting up Apache server on my Windows 7 machine. My machine is directly connected to the cable modem; so I believe that my machine has an internet IP (not just a local IP). I am able to open my ...
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1answer
237 views

configure my home router

I need to configure my home router so my localhost website can be seen by the world. I just need to configure the router because the paypal api's will not work with my localhost if paypal cannot get ...
15
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4answers
47k views

How to open TCP port in Ubuntu 10.10?

How to open TCP port in Ubuntu 10.10 ?
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1answer
4k views

How do networking ports work? Can I configure the ports that client and server use?

Let's say i have a "server" program listening on address 1.2.3.4:69 (i.e. remote port 69) When i connect from a "client" program to it, typically i would specify the IP address + port of the target ...
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1answer
444 views

Is this how ftp works?

I just want to check if my understanding of ftp is correct. An ftp server listens at port 21. A client establishes a connection to the ftp server using a local ephemeral port that connects to the ftp ...
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2answers
1k views

Removing DVI connectors stuck in video card ports

I need some help removing a couple of DVI connectors which are stuck in my video card ports. I don't know why they were screwed in so tightly in the first place but they won't move. I need to replace ...
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1answer
146 views

TCP source and destination ports switch

Why do i see source and destination ports switching with each other in a packet capturing application?
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3answers
4k views

better tool than netstat

OS: Windows server/ Windows XP Is there any port scan tool that can do what netstat does and also has a filter feature, so that unnecessary connections can be hidden?
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1answer
584 views

Port forwarding for VNC on Dynalink RTA1335 not working

I've vnc-java running on an Ubuntu box, with the IP address 192.168.1.68, using port 5800 (because port 5900 is being used for normal VNC). If I connect to 192.168.1.68:5800 using another computer on ...
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2answers
4k views

How to find who is connected to my computer from MAC address?

When I type in the command netstat -an into cmd, I get information that one of my ports is opened from some MAC address. My qestion is how to close that port and how to find from the MAC address what ...
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0answers
859 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 ...
2
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0answers
109 views

How can I get all of my keys and mouse to work using Midnight Commander on OSX?

I used port to install it and I figured out how to fix home/end/pgup/pgdn in the terminal preferences, but still, none of the keypad keys work. the mouse doesn't work. Any assistance would be ...
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2answers
3k views

How to change psql default listening host?

I've installed postgresql 8.3 manually on ubuntu 10.10, using ./configure, make and make install. It works perfect but when I try to connect it using psql I need to type following cmd, psql --port ...
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1answer
957 views

Device manager has no catagory for “ports-com & lpt”

My dell Inspiron laptop modem is not working. The Dell modem helper says that it is already in use and has a port confilct. When i go to the device manager there is not even a catagory listed for ...
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2answers
330 views

USB port causing device problems after new motherboard upgrade

I'm looking into a PC with an issue with one of the front USB ports (perhaps both). It was working before a motherboard upgrade but since then, a USB drive was inserted, overheated and does not ...
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1answer
127 views

Unstable network connection, port 41112

I have a problem with stability of my internet connection. I use a router for my home LAN (Asus WL-500gP V2). Recently, i've seen there are many "denied" log entries so i thought maybe the problem is ...
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1answer
404 views

Program that listens to a TCP/IP port for text and execute (emulate) a key stroke on keyboard?

I am looking for a program to be run on Windows Vista that would listens to a TCP/IP port and execute or emulate a keyboard's key stroke (or a combination of keystrokes, such as Ctrl + D). It's like ...
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1answer
91 views

How do I prevent accidentally building X as a dependency when installing a port?

I'm running FreeBSD in a small VM image, and I want to keep it headless. Is there an easy flag to set somewhere to prevent installing X as a dependency, or do I just need to rely on eternal vigilance? ...
7
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1answer
14k views

How can I close a port (seen open on netstat)?

I used netstat and I see some ports open that I want closed. How do I close them? The computer is a Mac running OS X
2
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3answers
4k views

How do I add another monitor to my desktop computer?

My desktop computer has one VGA port. Can I use a VGA splitter connector to add another monitor as an extension of the first monitor instead of duplicating the first monitor, or can I use a USB To VGA ...
4
votes
2answers
566 views

OS X blocks calls to local services

Accessing local services such as the web-based CUPS configuration (port 631) or Apache Tomcat (port 8080) with anything other than http://localhost:<port> fails. HOWEVER, doing the same with ...
2
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1answer
593 views

Block port(s) in Firefox

Is there any plugin that can set firefox to simulate port 8080 is blocked ? I want to see how my website behave if certain ports (8080) is blocked.
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2answers
107 views

Find port traffic on remote host

I have a machine that is inconvenient to access physically as it is on a another campus. It is running XP with no software firewall, the firewall being handled by a hardware Sonic device that I don't ...
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1answer
2k views

trying to access Google server on different ports

Why is that http://www.google.com:443/ fails almost instantaneously, while http://www.google.com:8080/ takes some more time before failing? If there is no server on these ports, both the ...
0
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2answers
472 views

Game server - How can I block connections from other countries?

I have a small server at home that I plan on putting a few game servers on, but I want to make sure only people from my country can join it. Is it possible to filter connection attempts to my server ...
0
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1answer
41 views

Terminal port to Windows?

Is there any terminal port to Windows, where i can also install things on like Fink, and custom scripts?
3
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2answers
244 views

Blocking internet poker applications

I 'look after' the wireless internet for a cafe where I live, and we've noticed that there's quite a substantial slow down of internet speeds when certain users are playing internet poker. I've put ...
1
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1answer
707 views

MySQL socket connections working, but not port connections

I installed MySQL community 5.1.45 on my Snow Leopard 10.6, using the pkg from their site. I had previously installed a MySQL binary from entropy.ch. In the previous installation, the connections were ...
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3answers
2k views

Tcp Port Open by Unknown Service

Running openSUSE 11.2 x86_64. Here's what a nmap of my IP provides: PORT STATE SERVICE 23/tcp open telnet 80/tcp open http 2800/tcp open unknown 8008/tcp open http I would like ...
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1answer
3k views

Port 53 UDP Outgoing flood

I am experiencing very huge problem. I have 4 computers in network, and from each a lot of data is being sent to ISP name servers. Sometimes data is being sent a little from each computer in network, ...
0
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1answer
231 views

How to know which protocol is used in data transfer and inspect that data?

I've a .net application for windows. This application transfers a lot of data to and from a particular server on a fix port no 8888. I tried 'Tcpview' but couldn't figure out anything useful. I only ...
5
votes
1answer
9k views

How do I determine which application is using port 8080? [duplicate]

Possible Duplicate: Finding the process that is using a certain port in linux I have an Ubuntu Server setup, where I'm trying to set up a daemon that wants to have access to port 8080. When ...
9
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1answer
1k views

How do I make Skype not use port 80?

I need this port for apache, how do I forbidden Skype from trying to use this port any more?
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3answers
5k views

Windows 7 port Forwarding Issue

I can't get port forwarding to work now that I am using windows 7 (64-bit). I am using a wireless connection (no wired connection available). I have the ports forwarded (IP has been double checked, ...
0
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3answers
319 views

I/O ports vs case holes

I'm in the midst of building a new desktop (first time building my own). I bought MSI NF750-G55 AM3 NVIDIA nForce 750a SLI HDMI ATX motherboard, and HEC 6C28BS Black / Silver Steel ATX Mid Tower ...
2
votes
3answers
500 views

What is a “PR”? What does PR stand for in the context of FreeBSD Ports

Compare: http://www.freebsd.org/prstats/index.html A specific "PR": http://www.freebsd.org/cgi/query-pr.cgi?pr=134774 Does it stand for Portability Report? or something similar? I can tell it ...
2
votes
0answers
2k views

Which process is using a port in OS X? [duplicate]

Possible Duplicate: Is there an app for the Mac that shows you which apps are using the network? I'm trying to start a program in OS X and I get the message: Port already in use: 8080 I ...
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1answer
2k views

Reconfigure standard Mac OS X FTP server to run on another port

How to reconfigure standard Mac OS X FTP server to run on another port? For example 2021 instead of 21?