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  • Connect to vmware virtual machine via network

    - by Arnis L.
    I want to connect to my vmware vm from home. To work network i'm connecting through VPN. VM sits on one of the workstations (can connect to it through RDC). Any tips how to do that? What software do i need (got VMWare workstation atm)? p.s. i'm quite a newbie at this.

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  • MySQL performance over a (local) network much slower than I would expect

    - by user15241
    MySQL queries in my production environment are taking much longer than I would expect them too. The site in question is a fairly large Drupal site, with many modules installed. The webserver (Nginx) and database server (mysql) are hosted on separated machines, connected by a 100mbps LAN connection (hosted by Rackspace). I have the exact same site running on my laptop for development. Obviously, on my laptop, the webserver and database server are on the same box. Here are the results of my database query times: Production: Executed 291 queries in 320.33 milliseconds. (homepage) Executed 517 queries in 999.81 milliseconds. (content page) Development: Executed 316 queries in 46.28 milliseconds. (homepage) Executed 586 queries in 79.09 milliseconds. (content page) As can clearly be seen from these results, the time involved with querying the MySQL database is much shorter on my laptop, where the MySQL server is running on the same database as the web server. Why is this?! One factor must be the network latency. On average, a round trip from from the webserver to the database server takes 0.16ms (shown by ping). That must be added to every singe MySQL query. So, taking the content page example above, where there are 517 queries executed. Network latency alone will add 82ms to the total query time. However, that doesn't account for the difference I am seeing (79ms on my laptop vs 999ms on the production boxes). What other factors should I be looking at? I had thought about upgrading the NIC to a gigabit connection, but clearly there is something else involved. I have run the MySQL performance tuning script from http://www.day32.com/MySQL/ and it tells me that my database server is configured well (better than my laptop apparently). The only problem reported is "Of 4394 temp tables, 48% were created on disk". This is true in both environments and in the production environment I have even tried increasing max_heap_table_size and Current tmp_table_size to 1GB, with no change (I think this is because I have some BLOB and TEXT columns).

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  • Network speeds being report as 4x higher than actual in Windows 7 SP1

    - by Synetech
    Ever since installing Windows 7 SP1, I have noticed that all programs that display my network transfer rate have been exactly 4x higher than they actually are. For example, when I download something from a high-bandwidth web site or through torrents with lots of sources, the download rate indicated is is ~5MBps (~40Mbps) even though my Internet connection has a maximum of only 1.5MBps (12Mbps). It is the same situation with the upstream bandwidth: the connection maximum is 64KBps, but I’m seeing up to 256KBps. I have tried several different programs for monitoring bandwidth throughput and they all give the same results. I also tried different times and different days, and they always show the rate as being four times too high. My initial thought was that my ISP had increased the speeds (without my noticing), which they have done before. However, I checked my ISP’s site and they have not increased the speeds. Moreover, when I look at the speeds in the program actually doing the transfer (eg Chrome, µTorrent, etc.), the numbers are in line with the expected values at the same time that bandwidth monitoring programs are showing the high numbers. The only significant change (and pretty much the only change at all) that has occurred to my system since the change was the installation of SP1 for Windows 7. As such, it is my belief that some sort of change exists in SP1 whereby software that accesses the bandwidth via a specific API receives (erroneously?) high numbers while others that have access to the raw data continue to receive the correct values. I booted into Windows XP and downloaded some things via HTTP and torrent and in both cases, the numbers were as expected (like they were in Windows 7 before installing SP1). I then booted back into 7SP1 and once again, the numbers were four times higher than possible. Therefore it is definitely something in SP1 that has changed how local bandwidth is calculated/returned. There is definitely something wonky with Windows 7 SP1’s network speed calculation. I tried Googling this, but (for multiple reasons), have had a difficult time finding anything relevant. Has anybody else noticed this behavior? Does anybody know of any bugs or changes in SP1 that could account for it?

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  • how to share files over local network in ubuntu

    - by rails_guy
    I am trying to paste some files from my laptop to desktop. both have ubuntu. From the laptop I can see the desktop under Places - Network. I can see the files in the Desktop but when I try to paste a file it says "permission denied" What can I do on the Desktop so it allows my laptop to paste files?

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  • Network Tracking

    - by jeswin14
    Hi all, I am having fifty workstations which are connected to a windows server 2003 server and the internet is shared from the server .My question is , am i able to implement a tracking mechanism without using any proxy server and track all the web pages which ever visited by an individual workstation connected to a network?If possible how to achieve that kind of tracking mechanism?Some workstations do open their web pages in InPrivate browsing , can we access those browsing history?

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  • Naming PCs on a mixed hosts home network.

    - by Chris Becke
    I have a home network comprising an Apple iMacs and a Windows 7 PCs - using the internet connection sharing feature on the Windows 7 PC to share the internet connection with the iMac. I have configured the hostnames on each pc so, running hostname on the Windows 7 box says "windows7" and on the iMac says "apple", but, if I try and "ping apple" from Windows 7 or "ping Windows7" from the iMac they can't resolve. what do I need to do to get this 'simple' level on connectivity working?

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  • How to route all network traffic for vlan through a proxy server on SRX

    - by user112570
    I'm trying configure an SRX router to automatically forward all traffic through a proxy server i have in the USA. I have created a separate vlan and configured the proxy but not sure how i can route all traffic through this. The aim of this task is create a test network which makes users appear in the location of the proxy server. (with the external ip address of the proxy) Is this possible and how should i do this. Am i approaching this the right way? Thanks

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  • Removing unused profiles from Windows network connections

    - by Shiki
    Can't figure this one out. When you connect to a wireless network (like an ad-hoc), it'll create a networkname 1 connection. After something changes, it makes a networkname 2 connection. And this goes on and on. Now I'm at connection ~23, at the home connection I'm at ~2 and ~5. Is there a way to clean these out? Couldn't find where Win stores such profiles.

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  • Python cannot go over internet network

    - by user1642826
    I am currently trying to work with python networking and I have reached a bit of a road block. I am not able to network with any computer but localhost, which is kind-of useless with what networking is concerned. I have tried on my local network, from one computer to another, and I have tried over the internet, both fail. The only time I can make it work is if (when running on the server's computer) it's ip is set as 'localhost' or '192.168.2.129' (computers ip). I have spent hours going over opening ports with my isp and have gotten nowhere, so I decided to try this forum. I have my windows firewall down and I have included some pictures of important screen shots. I have no idea what the problem is and this has spanned almost a year of calls to my isp. The computer, modem, and router have all been replaced in that time. Screen shots: import socket import threading import socketserver class ThreadedTCPRequestHandler(socketserver.BaseRequestHandler): def handle(self): data = self.request.recv(1024) cur_thread = threading.current_thread() response = "{}: {}".format(cur_thread.name, data) self.request.sendall(b'worked') class ThreadedTCPServer(socketserver.ThreadingMixIn, socketserver.TCPServer): pass def client(ip, port, message): sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((ip, port)) try: sock.sendall(message) response = sock.recv(1024) print("Received: {}".format(response)) finally: sock.close() if __name__ == "__main__": # Port 0 means to select an arbitrary unused port HOST, PORT = "192.168.2.129", 9000 server = ThreadedTCPServer((HOST, PORT), ThreadedTCPRequestHandler) ip, port = server.server_address # Start a thread with the server -- that thread will then start one # more thread for each request server_thread = threading.Thread(target=server.serve_forever) # Exit the server thread when the main thread terminates server_thread.daemon = True server_thread.start() print("Server loop running in thread:", server_thread.name) ip = '12.34.56.789' print(ip, port) client(ip, port, b'Hello World 1') client(ip, port, b'Hello World 2') client(ip, port, b'Hello World 3') server.shutdown() I do not know where the error is occurring. I get this error: Traceback (most recent call last): File "C:\Users\Dr.Frev\Desktop\serverTest.py", line 43, in <module> client(ip, port, b'Hello World 1') File "C:\Users\Dr.Frev\Desktop\serverTest.py", line 18, in client sock.connect((ip, port)) socket.error: [Errno 10061] No connection could be made because the target machine actively refused it Any help will be greatly appreciated. *if this isn't a proper forum for this, could someone direct me to a more appropriate one.

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  • Network Tracking

    - by jeswin14
    Hi all, I am having fifty workstations which are connected to a windows server 2003 server and the internet is shared from the server .My question is , am i able to implement a tracking mechanism without using any proxy server and track all the web pages which ever visited by an individual workstation connected to a network?If possible how to achieve that kind of tracking mechanism?Some workstations do open their web pages in InPrivate browsing , can we access those browsing history?

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  • Network share permission issues

    - by JL
    I have an IIS server running a site, appPool is running under local system, this is done because its easier to have full permissions to certificates and other file based resources on the local server. Problem is when I try write or copy a file to a network share, permissions are obviously not in place on the remote system for the IIS server local system. Is it possible to grant permissions on the remote system to include read/write or even full access to the IIS servers local system account?

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  • Java: micro-optimizing array manipulation

    - by Martin Wiboe
    Hello all, I am trying to make a Java port of a simple feed-forward neural network. This obviously involves lots of numeric calculations, so I am trying to optimize my central loop as much as possible. The results should be correct within the limits of the float data type. My current code looks as follows (error handling & initialization removed): /** * Simple implementation of a feedforward neural network. The network supports * including a bias neuron with a constant output of 1.0 and weighted synapses * to hidden and output layers. * * @author Martin Wiboe */ public class FeedForwardNetwork { private final int outputNeurons; // No of neurons in output layer private final int inputNeurons; // No of neurons in input layer private int largestLayerNeurons; // No of neurons in largest layer private final int numberLayers; // No of layers private final int[] neuronCounts; // Neuron count in each layer, 0 is input // layer. private final float[][][] fWeights; // Weights between neurons. // fWeight[fromLayer][fromNeuron][toNeuron] // is the weight from fromNeuron in // fromLayer to toNeuron in layer // fromLayer+1. private float[][] neuronOutput; // Temporary storage of output from previous layer public float[] compute(float[] input) { // Copy input values to input layer output for (int i = 0; i < inputNeurons; i++) { neuronOutput[0][i] = input[i]; } // Loop through layers for (int layer = 1; layer < numberLayers; layer++) { // Loop over neurons in the layer and determine weighted input sum for (int neuron = 0; neuron < neuronCounts[layer]; neuron++) { // Bias neuron is the last neuron in the previous layer int biasNeuron = neuronCounts[layer - 1]; // Get weighted input from bias neuron - output is always 1.0 float activation = 1.0F * fWeights[layer - 1][biasNeuron][neuron]; // Get weighted inputs from rest of neurons in previous layer for (int inputNeuron = 0; inputNeuron < biasNeuron; inputNeuron++) { activation += neuronOutput[layer-1][inputNeuron] * fWeights[layer - 1][inputNeuron][neuron]; } // Store neuron output for next round of computation neuronOutput[layer][neuron] = sigmoid(activation); } } // Return output from network = output from last layer float[] result = new float[outputNeurons]; for (int i = 0; i < outputNeurons; i++) result[i] = neuronOutput[numberLayers - 1][i]; return result; } private final static float sigmoid(final float input) { return (float) (1.0F / (1.0F + Math.exp(-1.0F * input))); } } I am running the JVM with the -server option, and as of now my code is between 25% and 50% slower than similar C code. What can I do to improve this situation? Thank you, Martin Wiboe

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  • How can I make this Java code run faster?

    - by Martin Wiboe
    Hello all, I am trying to make a Java port of a simple feed-forward neural network. This obviously involves lots of numeric calculations, so I am trying to optimize my central loop as much as possible. The results should be correct within the limits of the float data type. My current code looks as follows (error handling & initialization removed): /** * Simple implementation of a feedforward neural network. The network supports * including a bias neuron with a constant output of 1.0 and weighted synapses * to hidden and output layers. * * @author Martin Wiboe */ public class FeedForwardNetwork { private final int outputNeurons; // No of neurons in output layer private final int inputNeurons; // No of neurons in input layer private int largestLayerNeurons; // No of neurons in largest layer private final int numberLayers; // No of layers private final int[] neuronCounts; // Neuron count in each layer, 0 is input // layer. private final float[][][] fWeights; // Weights between neurons. // fWeight[fromLayer][fromNeuron][toNeuron] // is the weight from fromNeuron in // fromLayer to toNeuron in layer // fromLayer+1. private float[][] neuronOutput; // Temporary storage of output from previous layer public float[] compute(float[] input) { // Copy input values to input layer output for (int i = 0; i < inputNeurons; i++) { neuronOutput[0][i] = input[i]; } // Loop through layers for (int layer = 1; layer < numberLayers; layer++) { // Loop over neurons in the layer and determine weighted input sum for (int neuron = 0; neuron < neuronCounts[layer]; neuron++) { // Bias neuron is the last neuron in the previous layer int biasNeuron = neuronCounts[layer - 1]; // Get weighted input from bias neuron - output is always 1.0 float activation = 1.0F * fWeights[layer - 1][biasNeuron][neuron]; // Get weighted inputs from rest of neurons in previous layer for (int inputNeuron = 0; inputNeuron < biasNeuron; inputNeuron++) { activation += neuronOutput[layer-1][inputNeuron] * fWeights[layer - 1][inputNeuron][neuron]; } // Store neuron output for next round of computation neuronOutput[layer][neuron] = sigmoid(activation); } } // Return output from network = output from last layer float[] result = new float[outputNeurons]; for (int i = 0; i < outputNeurons; i++) result[i] = neuronOutput[numberLayers - 1][i]; return result; } private final static float sigmoid(final float input) { return (float) (1.0F / (1.0F + Math.exp(-1.0F * input))); } } I am running the JVM with the -server option, and as of now my code is between 25% and 50% slower than similar C code. What can I do to improve this situation? Thank you, Martin Wiboe

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  • Hardware/Software inventory open source projects

    - by Dick dastardly
    Dear Stackoverflowers I would like to develop a Network Inventory application that works on any operating system. Reports on every possible resource attacehd to a network. Reports all pertinent details of hardware and software. Thats (and i hate to use the phrase) my "End Game". However I am running before i can crawl here. I have no experience of this type of development, e.g. discovering a computers hardware and software settings. I've spent almost two weeks googling and come up short! :-(. So I am turning to you to ask these questions:- My first step is to find an existing open source project i can incorporate into my own code that extracts the fine grained details i am after, e.g. EVERYTHING there is to know about the hardaware and software on a single machine. Does this project exist? or do i have to develop that first? Have i got to write all this in C? I am guessing getting this information about a computer is going to be easier than for printers, scanners, routers etc... e.g. everything else you would find attached to a network. Once i have access to a single computers details i then need to investigate how i can traverse an entire newtork of printers, scanners, routers, load balancers, switches, firewalls, workstations, servers, storeage devices, laptops, monitors, the list goes on and on One problem i have is i dont have a 1000 machine newtork to play on! Is there any such resource available on theinternet? (is that a silly question?) Anywho, if you dont ask you wont find out! One aspect iam really looking forward to finding out how to travers the entire network, should i be using TCP/IP for this? Whats a good site, blog, usergorup, book for TCP/IP development? How do i go about getting through firewalls? How many questions can i ask in one go? :-) My previous question on this topic ended up with PYTHON being championed as the language/script to go with to develop this application in. Having looked at a few PYTHON examples they all seemed to be related to WINDOWS networks and interrogating Windows Management Instrumentation (WMI). I had the feeling you cant rely on whats in WMI, and even if you can that s no good for UNIX netwrks. Surely there exist common code for extracting hardware and software details from a computer? Why cant i find it on the internet? Pease help? Theres no prizes though :-( Thanks in advance I would like to appologise if i have broken forum rules or not tried hard enough on my own before asking for assistance. I just would like to start moving forward with this as its one of the best projects i have been involved with. I am inspired by the many differnt number of challenges involved and that if i manage to produce a useful application at the end of it it would hopefully be extremely helpful to many people. That sit Thanks in advance DD

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  • Programmatically retrieve disconnected network adapter information in .NET

    - by Soo Wei Tan
    I have an application written in C# that needs to retrieve information like IP address, subnet mask from a disconnected network adapter. I've tried using various methods such as WMI and the .NET NetworkAdapter class but they don't return any useful data when the network adapter is disconnected. I'm pretty sure Windows keeps this information somewhere, since I can apply network settings using netsh and it appears correctly in the Control Panel. One thing that worked for me in XP was to parse the output of the netsh tool and it would return information even for a disconnected adapter. However, this doesn't seem to work on Windows 7. Win XP output: Configuration for interface "Local Area Connection 5" DHCP enabled: No IP Address: 169.254.0.128 SubnetMask: 255.255.255.0 InterfaceMetric: 0 Win7 output: Configuration for interface "Local Area Connection 2" DHCP enabled: No InterfaceMetric: 5 Any ideas?

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  • IIS7 permit access only to local network

    - by user335518
    Hi, I am having a problem with the IIS 7 on a Win 2008 server. I only want to have access to it inside my network and denied access from anyone outside the network. I had created a rule to permit access to the group of computers with the IP: 192.168.0.1 (255.255.255.0). In the IIS6 this was enougth to prevent access of any IP that don't belong to the network. Any idea of how can I block these access? Thanks!

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  • Windows - VBScript - Determine IP address of computer on network

    - by tward
    I have written some VBScripts to automate tasks that I perform on computers over the network. These work great for most tasks however within our network we have problems with the IP address in DNS being correct all the time. This mainly occurs with laptops where we have different IP ranges for machines on the wireless and wired network. For example a machine may boot up wired in the morning and get an IP address: 10.10.10.1 When it switches to wireless it will obtain an address in a different subnet: 10.11.10.1 When you try to connect to that machine it still returns the old IP address (10.10.10.1) even though the computer now has a new one. I have found that I can still connect to that computer's C$ share via \computer name\c$ even though the machine does not ping. Obviously there is some other kind of address resolution going on, my question is how do I harness this to allow my VBScripts connect to WMI? Thanks!

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  • InApp Purchase on slow network

    - by Chandan Shetty SP
    My InApp purchase code works fine in normal network, but in very slow network(safari browser will take 5 min to load a webpage). I am not getting any delegates... - (void)requestDidFinish:(SKRequest *)request - (void)request:(SKRequest *)request didFailWithError:(NSError *)error - (void)productsRequest:(SKProductsRequest *)request didReceiveResponse:(SKProductsResponse *)response So my code blocks indefinetly because i am setting setUserInteractionEnabled to FALSE initially and setting it back to TRUE in the above delegates... [[[UIApplication sharedApplication]keyWindow]setUserInteractionEnabled:FALSE]; Is it possible to check the network status before creating "SKProductsRequest" or any better way to implement inApp Purchase? Thanks in advance,

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  • Identifying iPhone OS's on a Network and Sending Push Notifications

    - by portalservices
    tldr; Can you identify devices on your network as an iPhone OS device easily? Can you send push notifications to devices identified as using the iPhone OS on your network without a a target app? Is is possible to identify which devices on a network are using the iPhone OS? With this information, is it possible to send push notifications to these devices? From my understanding, your application server will contact APNs, which will contact the users. So, the above would be impossible. Can someone confirm this for me? Thanks, P.S.

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  • List of IP addresses/hostnames from local network in Python

    - by joshhunt
    How can I get a list of the IP addresses or host names from a local network easily in Python? It would be best if it was multi-platform, but it needs to work on Mac OS X first, then others follow. Edit: By local I mean all active addresses within a local network, such as 192.168.xxx.xxx. So, if the IP address of my computer (within the local network) is 192.168.1.1, and I have three other connected computers, I would want it to return the IP addresses 192.168.1.2, 192.168.1.3, 192.168.1.4, and possibly their hostnames.

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  • Detecting network adapter changes on the iPhone

    - by theactiveactor
    Say that there are no WIFI networks currently available and my network-enabled app is connected over 3G. How can I detect if a user has roamed into a WIFI network? I would also like to detect the case when the user is connected over WIFI and suddenly received 3G signal. In other words, I would like to be asynchronously notified of network adapter changes. I tried using the SCNetworkReachability framework asynchronously but found that for some reason, I am not receiving Wifi-related events (i.e. adapter on/off) when connected over 3G.

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  • Reading a file over a network path

    - by Sin5k4
    I have this weird issue,when I use > File FileToRead = new File("\\\\MYSERVER\\MYFOLDER\\MYFOLDER\\MYPICTURE.JPG"); to read a file over a network,all I get is a null pointer exception.Normally a local path works with this,but when on a network path,I just couldn't manage to get it to work.Any ideas? PS:oh and my network connection seems to work,no issues when accessing data in windows explorer... More of the code: File FileToRead = new File("file://DOKSERVICE/Somefolder/ProductImage/01001.JPG"); // File FileToRead = new File("c:\\dog.jpg"); local test BufferedImage image = ImageIO.read(FileToRead); BufferedImage resizedimage = new BufferedImage(260, 260,BufferedImage.TYPE_INT_RGB ); Graphics2D g = resizedimage.createGraphics(); g.drawImage(image, 0, 0, 260, 260, null); g.dispose(); picture.setIcon(new ImageIcon(image));

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