A communication end-point for networking, for CPUs please use [processor-socket]

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Dovecot.conf assistance since upgrade

I've been following a guide on this site: http://oskarhane.com/setup-your-own-mail-hosting-with-linux-postfix-dovecot-and-mysql/ To install postfix with dovecot and mysql on a Linux server. All ...
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0answers
46 views

Communicate a button click event with sockets

Desire: I have a device or micro-controller i'll call it a mc that I need to communicate to when a web page button is clicked using sockets. MC1 <button id ='on1' name='mc1'>On</button> ...
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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 ...
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1answer
74 views

Why is it possible to continue working in a ssh session after a network disruption?

What enables the Secure Shell client and server to resume communication after one or several network interfaces in the communication path between them is shut down and re-appears some moments later? ...
1
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1answer
685 views

How do I prevent Linux kernel from responding to incoming TCP packets?

For my application, I need to intercept certain TCP/IP packets and route them to a different device over a custom communications link (not Ethernet). I need all the TCP control packets and the full ...
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1answer
59 views

TCP vs UDP Error-Checking

I've bounced upon two articles that describe in-depth on how TCP and UDP connections work. However there is some kind of inconsistency. Where one article tells me that UDP does no Error-Checking at ...
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1answer
3k views

What do Intel's socket package specifications mean in detail?

What is the difference between FCPGA988 PGA988 rPGA rPGA988B BGA1224 FCBGA1224 Do some mean that the BGA is soldered to the board and cannot be removed? BGA is soldered versions only, right? ...
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1answer
572 views

How to explicitly free EADDRINUSE port for binding it again?

$ testOnDemandRTSPServer ... Play this stream using the URL "rtsp://192.168.90.2:8554 ... ^C $ testOnDemandRTSPServer Failed to create RTSP server: bind() error (port number: 8554): Address already in ...
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1answer
81 views

LGA 1155 Socket

I have an ASUS CM6850 Motherboard and SIW reports: Manufacturer ASUSTeK Computer INC. Model CM6850 Version Rev 1.xx Bridge North Bridge Intel Sandy Bridge Revision 09 South Bridge Intel H67 ...
4
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1answer
2k views

How to determine the socket connection up time on Linux

I can verify that the connection is up: $ netstat -tn | grep "192.168.2.110" tcp 0 0 192.168.2.100:10444 192.168.2.110:52639 ESTABLISHED is there a way to check how long this tcp port ...
0
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1answer
258 views

getting global IP address when using a vpn

How can I get my global IP address? I can see my global IP address via a site: www.whatismyipaddress.com It shows correctly about information of my computer including IP address. But if I use a VPN ...
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2answers
759 views

Can I create a socket file on Mac?

I am missing /tmp/mysql.sock. It has signature srwxrwxrwx. Is it possible to create this file by hand?
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1answer
754 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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2answers
3k views

sshfs mounting linux directory from mac stopped working

Until this morning, I'd been using sshfs quite nicely to mount a directory from a linux machine in my office. Today, it stopped. Here's my sshfs command: sshfs -osshfs_sync,volname=linux-builder3 ...
1
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1answer
650 views

Can Connectify Dispatch be used for video streaming?

Here is my situation. We are specialized in video producing local sports for web-streaming. In most cases clients provide us with poor bandwidth, which is absolutely critical for us. There is a ...
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2answers
766 views

port forwading to make a server on my computer

I tried to make a chat program with java. i succeed when i use the ip of 127.0.0.1 to connect. Socket socket = new Socket("127.0.0.1",5005); it all worked great on my computer and the program even ...
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2answers
3k views

Is it possible to upgrade the AMD E-300 APU on a laptop?

I read that this processor is BGA. That would mean that it is soldered to the motherboard? Can an average laptop technician replace it? This processor is very slow, it scores only 600 on the Passmark ...
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1answer
187 views

No-socket alternative to tmux or screen

My university gives each student a directory on their AFS which is accessible via SSH. There is a (light) CLI-driven piece of software that I would like to run continuously from the university. I ...
2
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1answer
304 views

Simulating a network issue for a specific application

This is somehow a developer question, but as it is more related to operating systems and network connections, I will post it here and not on Stack Overflow. I'm trying to simulate a situation when a ...
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0answers
316 views

websocket behind a firewall

I have a computer with a strong CPU and a lot of memory (strongy) running Windows Server 2008 R2, that is blocked by a firewall from any access from the outside world. I have a computer with a weak ...
0
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1answer
65 views

Can socket files cause storage system atrophy?

I was thinking about setting up a web server on a Raspberry Pi, RPi boots from an SD card. The server is meant to be able to be in operation for a very long time, 10 years is it's expected life span. ...
3
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1answer
408 views

How do I run mysqld as a regular non-daemon program?

I'd like to run a local copy of mysql, to keep software development environments isolated. However, I can't seem to get the mysqld server to start up. I've created a database directory with ...
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1answer
841 views

Too many open files on socket

I have a big problem and that is that my company's production application which I unfortunately can't shutdown and restart ( I am unsure how, and I don't want to do any mistake) is spitting out a lot ...
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2answers
85 views

Is it possible to see content of TCP/IP connection?

This is a bit weird. I want to see the content of all TCP/IP connections coming in/out of the system. Is any of this possible on the same machine? I know I won't be able to see encrypted content but ...
0
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1answer
510 views

Not receiving responses sent from a different subnet when my machine is on DHCP

I am building a utility to communicate with some hardware that comes with a default IP address of 10.0.0.1 and subnet mask 255.255.255.0. The hardware replies to UDP messages on the same IP and port ...
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4answers
5k views

Send message to specific port on Windows cmd.exe

I'm playing with a program on desktop. It's listening on port 5060. However, I don't have anything sending to this location/host. If I open my laptop's command line, is there a way to send a ...
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2answers
5k views

TCP: Maximum number of connections (client and server)

In the description of TCP in the Wikipedia, it is stated that The number of sessions in the server side is limited only by memory and can grow as new connections arrive, but the client must ...
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2answers
8k views

How can I show only 127.0.0.1 traffic using Wireshark?

Every time I try to filter to just show a specific IP address, I get an error indicating that it is "not an interface or a field." I have no idea what that means. Furthermore, I don’t really see any ...
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2answers
384 views

How does the OS generate a random socket port?

I'm wondering how the OS makes sure that the clients don't get the same "random"(binding the socket by setting the port to 0) port as any other client in the network, since I want to communicate using ...
13
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2answers
11k views

linux named sockets howto

I know that there are named sockets & named pipes (fifo) in linux. In ls -l, they would look as below:(I have changed the filenames, for demonstration.) prw-r--r-- 1 root root 0 Nov 8 16:31 ...
4
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1answer
647 views

How does SSH tunneling work at low level?

I am interested in the exact mechanism that occurs when an SSH tunnel is stablished. Supposing we have 3 computers: LOCAL host, INTERMEDIATE host, and REMOTE host, with this topology: Localhost --- ...
0
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1answer
157 views

How to fix 0x800CCC0E Error Codes?

I recently started receiving the above-mentioned error which is apparently a Winsock error message it is preventing me from checking my e-mail with Gmail, although there is no problem with my e-mail ...
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2answers
549 views

Meaning of “netcat can be used as a backdoor” [closed]

I recently read about netcat and it is often mentioned that it could be used as a "backdoor". What exactly is meant by backdoor? Could some one give an example of such usage of netcat.
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3answers
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Can I monitor a local unix domain socket like tcpdump?

I'd like to monitor responses on a unix socket without disturbing the original connections and pipe them to a script for processing. I know how to do this with tcpdump for tcp connections but I ...
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1answer
406 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 ...
0
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1answer
328 views

Where to put unix sockets

I am new to this, so sorry if its obvious. I am running a debian server and installing the likes of UWSGI, NGinx etc on there. The configurations keep talking about pointing to "sockets". In the ...
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686 views

Bridging two sockets

I wondered if it is possible to bridge two incoming tcp sockets. For example: Client A -----> Server <----- Client B The the server sends it's magic to both clients and then they connect ...
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1answer
505 views

inetd analog for Windows

Need a better analog of inetd daemon for Windows. Currently using http://sourceforge.net/projects/winetd/, but it's outdated with bugs present. Please recommend any better solutions for running your ...
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2answers
915 views

SSH over local unix socket

I'm trying to make a tunneling application to use SSH over a HTTPS connection, with a custom client and server at each end, where the custom client opens a unix socket that can communicate with the ...
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1answer
501 views

fcgiwrap listening to a unix socket file: how to change file permissions

I have a web server (nginx) and a CGI application (gitweb) that is ran with fcgiwrap to enable Fast CGI access to it. I want the Fast CGI protocol to take place over a unix socket file. To start the ...
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1answer
641 views

ARP: 'Who has' broadcast resulting in TCP segment losses

I have an issue with a simple TCP connection between two PCs (both Windows XP SP3) connected by direct wire to each other. These PCs have IP address 10.10.10.1 (server) and 10.10.10.2 on the network ...
2
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1answer
630 views

Disconnect a Program from its Socket or Port in Windows 7

I am working on a hack for internal purposes whereby I want to disconnect a program from it's socket without killing the process. For example, program A (running xxx.exe) is running on port 50000 and ...
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2answers
1k views

Socket error sending data from Loftware to Zebra ZM400

I am occasionally experiencing problems with my Zebra ZM400 printer. When I print a label from Loftware, sometimes the label does not print. When this issue occurs, I can't ping the printer nor can ...
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1answer
387 views

Do both CPUs on a dual socket system need their own set of RAM?

I have a server motherboard with two sockets that support triple-channel memory. Each processor has 6 DIMMs. If I plan to use both CPUs, should I populate at least three of the DIMMs on each ...
0
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1answer
338 views

Why does it take so long for Eclipse to connect to a JUnitRunner process when IPv6 is enabled?

When IPv6 is enabled on my computer, half a minute passed between starting a new JUnit process and the test tree appearing in the JUnit view. When I disable IPv6, the tests appear immediately. What ...
0
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1answer
610 views

Is it safe to create a link to a socket file in /tmp?

I'm a bit confused as to see that going from one Linux distribution to another, the package managers will sometimes configure processes to create the socket file either in /tmp or in ...
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2answers
2k views

Upgrading mobile processor, socket confusion

http://en.wikipedia.org/wiki/Socket_G1 I have a Socket 989 rPGA (I think, Dell Inspiron D7010). I have 3 questions that I could use some help with. According to wikipedia, with Socket 989 rPGA can ...
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4answers
739 views

How to enable ports on a wireless network for java socket programming

Background: I have written a java server-client program. The server accepts incoming connections on port 2175 and writes responses on 2176 which the client listens on for the response. I am sending ...
2
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1answer
472 views

estimating size of reply HTTP headers

I am trying to download a file via a basic socket connection, using a HTTP GET request. So, I have to specify how many bytes of data coming in I have to read from the socket. However, I am having ...
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5answers
911 views

How do sockets deal with routers?

(Not sure if this should be on the unix stackexchange site...) When I make a socket I use IPv4 and a port number. So if I know both of these, but there's a router set up (on a home network; just ...