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  • Multiple home routers

    - by netvope
    Suppose I have the following configuration: Router A: WAN port connected to the Internet, LAN = 192.168.1.0/24 Computer A: Connected to router A as 192.168.1.101 Router B: WAN port connected to router A as 192.168.1.102, LAN = 192.168.2.0/24 Computer B: Connected to router B as 192.168.2.101 Now I want computer A to communicate with computer B seamlessly (e.g. can establish a TCP connection by running nc 192.168.2.101 <port>) by means of routing, rather than merging the two networks into one (which can be easily accomplished using router B as a switch). Most routers are shipped with NAT turned on, of which I definitely need to turn off in router B. But what other steps do I need to take so that packets from computer A to computer B would go through router B? I could manually add a routing table entry in computer A so that all packets targeted to 192.168.2.0/24 go through gateway 192.168.1.102, but I would prefer an automatic way if it exist.

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  • Lot of Multicast traffic on LAN

    - by Nel
    Recently the whole network at work is being hit by multicast traffic originating on the LAN itself. I did some investigating and the service which seems to be responsible is ws-discovery. I have attached a screenshot of wireshark capturing the traffic. I have tried shutting down the source machine from which it was originating, but the multicast traffic still seems to be present in the network. My network topology 2 subnets - 10.10.10.0/24 and 10.20.10.0/24. Gateway is a debian system. We have 3 switches for 3 floors. They are all unmanaged Dlink 24-port switches. Multicast blocking at switch level is out of the question. Any solutions? :(

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  • How does one get rid of fishy behavior in Windows?

    - by Tom Wijsman
    After I had boot my computer this morning there suddenly flooded water from the top of the screen, after which some fishes dropped into it. Now I can barely see what I am doing because the water distorts the view. Sometimes the fish follow the cursor so I need to move it away or wait for the fish to mind their own business. This makes it very annoying to use my system. What have I tried? Reboot the system. This caused the water to deplete from the desktop. Upon reboot, the screen was refilled with water and fishes. Attach another monitor. Same problem, fills that monitor as well and gives me extra fish. Clicking the fish. Makes them turn direction. Right clicking the fish. Changes color of the fish, not really useful. I'm locked out of changing the background or screen saver settings. Hence, I had to post the lady below... Safe mode doesn't save me from the fishes. It does give me another background there, but I can't screenshot easily. Other user accounts experience this as well. The Guest account seems to experience more fish than the other accounts. Using HijackThis, OTL Timekeeper List, Syninternal Autoruns, RootKitRevealer, ShellExView and similar tools I can't seem to find any entries that could be it, the Sysinternals tools show everything as verified. I'm suspecting this to be a driver problem. Randomly removing drivers doesn't seem to alleviate the problem. When removing the Graphics Drivers, it makes my screen black. While that could be considered the solution, it's not what I want. Changing the time / date settings does also not seem to affect the fishes. Changing the time a few years in the future, I would have expected the fishes to be dead. But, the same fishes are still there... They simply won't die! Tried to get used to them. They are really bothering me, looks like they require food. I don't know how to give them food, but apparently they get it elsewhere during reboot... Tried to disable my mouse pointer and use the keyboard. This works, they now swim around more randomly. They do put their attention to huge changes on the screen, so I need to type slow. Or otherwise I can't see what I'm tying exactly. Hold my laptop upside down. This seems to affect the water and fishes, but the water stays in the screen. They seem super resistant against water sickness and confusion though... What does the problem look like? What do I need? A way to get rid of these fishes on my screen forever, they are really annoying me a lot and I'm about to crack the screen to see if that makes them escape. Do you have any idea why this problem is occurring? What are my considerations? Buying an USB fish tank could make the fish leave the screen, I am uncertain though whether the fish could leave the screen through the USB cable. Using the FISh (programming language) which seems to provide EXPRESSIVE POWER and EFFICIENT EXECUTION, I can however not find any examples on how to remove fish. What are my Specifications? I'm using a Sony Vaio Fishy laptop. Sony VAIO VGN-Fishy, VAIO. Processor: 1337 MHz, Intel Core 2 Duo, T5432, 1 MB, Intel PM965 Express, 667 MHz. Memory: 1024 MB, DDR2-SDRAM, 667 MHz, 2 x 1024 MB, 4 GB. Disk Drive: 50 GB, Serial ATA, 5400 RPM. Storage Media: Memory Stick™, Memory Stick PRO™. Display: 15.4 ", 1280 x 800 pixels, LCD. Video: GeForce 8400M GT, 128 MB. Optical Drive: DVD±R/RW DL, 24 x, 24 x, 24 x, 6 x, 4 x, 6 x, 4 x, 5 x, 5 x, 8 x, 8 x, 8 x, 8 x, 6 x, 6 x, 24 x, 24 x, 24 x, 16 x. Camera: 1.3 MP, 30 fps. Networking: 2.0+EDR. Keyboard: Touchpad, AZERTY. Operating System/Software: Windows Vista Home Premium. Security: Kensington. Weight & Dimensions: 98.8 oz (2800 g), 14 " (355.8 mm), 10 " (254.4 mm), 0.98 " (24.9 mm). Other features: 100 BASE-TX/10 BASE-T, 802.11a/b/g/n/Draft n, V92/V.90, fishes. Plz! Help me...

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  • Sonicwall site-to-site can not access remote network

    - by vpnwizard
    I have 2 SonicWall devices (tz100) in 2 different geographical locations. They are connected to each other using site-to-site vpn connection and this works just great. Device A network - 192.168.1.0/24 Device B network - 192.168.2.0/24 When I connect to one device, I can access, from my computer, anything on that specific subnet. However, I am unable to view anything, from my computer, on the other network. Is there a setting somewhere that will forward my requests to the other subnet? Example - I VPN into Device A, but would like to get to a server which is on the Device B network (192.168.2.0/24)

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  • Dedicated server not responding. Malicious?

    - by user2801881
    My Dedicated server dies for days on end. As soon as i reboot after about 20 seconds it does again. Then it will just work again and be fine for another week or so. Im convinced its malicious. Not sure what results or readings i can give you so just ask and i will do whatever is needed. netstat (top 20 connections) 7 79.142.88.250 8 120.202.249.19 8 159.226.21.62 8 188.168.38.102 8 202.114.6.37 8 222.62.207.70 9 60.191.35.42 10 112.124.46.186 10 116.228.55.184 10 181.133.218.11 10 222.90.111.146 11 183.136.146.110 12 124.127.51.135 12 92.225.24.24 13 221.176.23.242 15 119.10.115.165 16 17 218.6.224.66 21 116.228.55.217 24 114.112.194.19 top CPU usage seems to add up to about 10% Mailq is empty Thanks in advance

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  • avconv and ffmpeg - drawtext filter text_w evaluates as 0 in Ubuntu Precise

    - by Chris White
    I'm attempting to draw text onto a video using either the avconv or ffmpeg commands. When specifying x= for where on the final video to place the text, the 'text_w' value is evaluating to 0, rather than the width of the rendered text as it should. I'm using Ubuntu 12.04 I've got avconv version 0.8.3-4:0.8.3-0ubuntu0.12.04.1 and ffmpeg version 0.8.3-4:0.8.3-0ubuntu0.12.04.1 Example command: avconv -i test.mov -vf "drawtext=fontfile='/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf':text='test text':x=text_w:y=50:fontsize=24:fontcolor=black" texted.mov This command causes the text to be printed as if x were set to 0. What I'd really like to be able to do is center the text horizontally using something like this: avconv -i test.mov -vf "drawtext=fontfile='/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf':text='test text':x=(main_w-text_w)/2:y=50:fontsize=24:fontcolor=black" texted.mov Using ffmpeg for to attempt the same ends with the same result ffmpeg -i test.mov -vf "drawtext=fontfile='/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf':text='test text':x=(main_w-text_w)/2:y=50:fontsize=24:fontcolor=black" texted.mov

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  • After installing Win7 on my laptop I'm having trouble extending the desktop to an external monitor

    - by devoured elysium
    I have a HP TX2000 laptop and a HP w2408 screen. Yesterday, I installed Win7 and I'm having trouble having the 24 inches screen work as a secondary screen. It seems like my laptop cannot detect both screens (its own and the 24 inches one). I think I already have all the drivers installed (I ran Win7's tool to detect and automatically update drivers and it said everything was up to date!), so what might be the problem? If I connect the 24 inch screen to my laptop, it will happily show a copy of what is being shown on that big screen too, but I'd like to have it ''extend'' the desktop to the big screen, instead.

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  • Failed pinging a LAN card of the server from the client using shared internet connection

    - by bobo
    The server (Windows XP Pro SP3) has two LAN cards (LAN card A and B) and is connected to the internet using ADSL. The ADSL connection is shared to LAN card B using Internet Connection Sharing. The client (Windows XP Pro SP3) has one LAN card, and is connected to LAN card B of the server so that it has access to the internet. The IP address on the LAN cards are defined as follows: Server: LAN card A: 192.168.0.3/24 (manually defined by me) LAN card B: 192.168.0.1/24 (manually defined by Internet Connection Sharing) Client: LAN card: 192.168.0.123/24 (assigned by DHCP) Default gateway: 192.168.0.1 From the server, I can ping 192.168.0.123 successfully. From the client, it can access the internet without any problem. I can also ping 192.168.0.1 successfully but for 192.168.0.3, it failed with the Request Timeout error message. Why did the ping fail, and what should be done to make the ping possible? (all firewalls have been turned off.)

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  • why would you create two different subnets on the same physical network?

    - by xirtyllo
    I'm working at a messy location, one of the strange (for me) things is that on the same physical network there are two different subnets. Specifically some computers will have 10.0.0.0/24 and some others will have 172.16.0.0/24. There is only one DHCP server, which gives IPs on the 10.0.0.0/24 range, and there are two internet gateways, one with IP 172.16.0.1 and one with IP 10.0.0.1 . To give an example, I can easily swap one PC from one subnet to the other just by changing its IP and gateway settings. I am trying to imagine why they created the network this way, and which may be the possible advantages and/or drawbacks of having two different subnets on the same physical network. Any thoughts?

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  • creating proper vpn tunnel, when both LANs have the same addressing

    - by meta
    I was following this tutorial http://wiki.debian.org/OpenVPN#TLS-enabled_VPN and this one http://users.telenet.be/mydotcom/howto/linux/openvpn.htm to create openvpn connection to my remote LAN. But both examples assumed that both LANs have different addresses (ie 192.168.10.0/24 and 192.168.20.0/24, check out this image i.stack.imgur.com/2eUSm.png). Unfortunately in my case both local and remote lan have 192.168.1.0/24 addresses. I am able to connect directly on the openvpn server (I can ping it and log in with ssh), but I can't see other devices on the remote LAN (not mentioning accessing them via browser which was the point from the first place). And don't know if the addressing issue may be the reason of that? If not - how to define routes, so I could ping other devices in remote LAN?

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  • How to create custom Live CD with upgraded linux-image kernel?

    - by ???
    I'm following this tutorial to customize a Live CD, http://www.debuntu.org/how-to-customize-your-ubuntu-live-cd However, it's failed to upgrade linux-image, I guess it's just can't update-grub. Any idea? EDIT I copied the custom/ directory into an ext4 image, now the linux-image-2.6.35-24 package is successfully upgrade. But as shown in the original CDROM, the vmlinuz-* and initrd.img-* file is moved out to /casper/vmlinuz and casper/initrd.lz. Well, I can move vmlinuz-2.6.34-24-generic to /casper/vmlinuz, but how to compress file initrd.img-2.6.35-24-generic in .lz format? (It looks like lzip, but it's not: ) # cd original-maverick/casper # lzip -d initrd.lz initrd.lz: bad magic number (file not in lzip format).

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  • [C#] Improving method to read signed 8-bit integers from hexadecimal.

    - by JYelton
    Scenario: I have a string of hexadecimal characters which encode 8-bit signed integers. Each two characters represent a byte which employ the leftmost (MSB) bit as the sign (rather than two's complement). I am converting these to signed ints within a loop and wondered if there's a better way to do it. There are too many conversions and I am sure there's a more efficient method that I am missing. Current Code: string strData = "FFC000407F"; // example input data, encodes: -127, -64, 0, 64, 127 int v; for (int x = 0; x < strData.Length/2; x++) { v = HexToInt(strData.Substring(x * 2, 2)); Console.WriteLine(v); // do stuff with v } private int HexToInt(string _hexData) { string strBinary = Convert.ToString(Convert.ToInt32(_hexData, 16), 2).PadLeft(_hexData.Length * 4, '0'); int i = Convert.ToInt32(strBinary.Substring(1, 7), 2); i = (strBinary.Substring(0, 1) == "0" ? i : -i); return i; } Question: Is there a more streamlined and direct approach to reading two hex characters and converting them to an int when they represent a signed int (-127 to 127) using the leftmost bit as the sign?

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  • Improving method to read signed 8-bit integers from hexadecimal.

    - by JYelton
    Scenario: I have a string of hexadecimal characters which encode 8-bit signed integers. Each two characters represent a byte which employ the leftmost (MSB) bit as the sign (rather than two's complement). I am converting these to signed ints within a loop and wondered if there's a better way to do it. There are too many conversions and I am sure there's a more efficient method that I am missing. Current Code: string strData = "FFC000407F"; // example input data, encodes: -127, -64, 0, 64, 127 int v; for (int x = 0; x < strData.Length/2; x++) { v = HexToInt(strData.Substring(x * 2, 2)); Console.WriteLine(v); // do stuff with v } private int HexToInt(string _hexData) { string strBinary = Convert.ToString(Convert.ToInt32(_hexData, 16), 2).PadLeft(_hexData.Length * 4, '0'); int i = Convert.ToInt32(strBinary.Substring(1, 7), 2); i = (strBinary.Substring(0, 1) == "0" ? i : -i); return i; } Question: Is there a more streamlined and direct approach to reading two hex characters and converting them to an int when they represent a signed int (-127 to 127) using the leftmost bit as the sign?

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  • vSphere ESX 5.5 hosts cannot connect to NFS Server

    - by Gerald
    Summary: My problem is I cannot use the QNAP NFS Server as an NFS datastore from my ESX hosts despite the hosts being able to ping it. I'm utilising a vDS with LACP uplinks for all my network traffic (including NFS) and a subnet for each vmkernel adapter. Setup: I'm evaluating vSphere and I've got two vSphere ESX 5.5 hosts (node1 and node2) and each one has 4x NICs. I've teamed them all up using LACP/802.3ad with my switch and then created a distributed switch between the two hosts with each host's LAG as the uplink. All my networking is going through the distributed switch, ideally, I want to take advantage of DRS and the redundancy. I have a domain controller VM ("Central") and vCenter VM ("vCenter") running on node1 (using node1's local datastore) with both hosts attached to the vCenter instance. Both hosts are in a vCenter datacenter and a cluster with HA and DRS currently disabled. I have a QNAP TS-669 Pro (Version 4.0.3) (TS-x69 series is on VMware Storage HCL) which I want to use as the NFS server for my NFS datastore, it has 2x NICs teamed together using 802.3ad with my switch. vmkernel.log: The error from the host's vmkernel.log is not very useful: NFS: 157: Command: (mount) Server: (10.1.2.100) IP: (10.1.2.100) Path: (/VM) Label (datastoreNAS) Options: (None) cpu9:67402)StorageApdHandler: 698: APD Handle 509bc29f-13556457 Created with lock[StorageApd0x411121] cpu10:67402)StorageApdHandler: 745: Freeing APD Handle [509bc29f-13556457] cpu10:67402)StorageApdHandler: 808: APD Handle freed! cpu10:67402)NFS: 168: NFS mount 10.1.2.100:/VM failed: Unable to connect to NFS server. Network Setup: Here is my distributed switch setup (JPG). Here are my networks. 10.1.1.0/24 VM Management (VLAN 11) 10.1.2.0/24 Storage Network (NFS, VLAN 12) 10.1.3.0/24 VM vMotion (VLAN 13) 10.1.4.0/24 VM Fault Tolerance (VLAN 14) 10.2.0.0/24 VM's Network (VLAN 20) vSphere addresses 10.1.1.1 node1 Management 10.1.1.2 node2 Management 10.1.2.1 node1 vmkernel (For NFS) 10.1.2.2 node2 vmkernel (For NFS) etc. Other addresses 10.1.2.100 QNAP TS-669 (NFS Server) 10.2.0.1 Domain Controller (VM on node1) 10.2.0.2 vCenter (VM on node1) I'm using a Cisco SRW2024P Layer-2 switch (Jumboframes enabled) with the following setup: LACP LAG1 for node1 (Ports 1 through 4) setup as VLAN trunk for VLANs 11-14,20 LACP LAG2 for my router (Ports 5 through 8) setup as VLAN trunk for VLANs 11-14,20 LACP LAG3 for node2 (Ports 9 through 12) setup as VLAN trunk for VLANs 11-14,20 LACP LAG4 for the QNAP (Ports 23 and 24) setup to accept untagged traffic into VLAN 12 Each subnet is routable to another, although, connections to the NFS server from vmk1 shouldn't need it. All other traffic (vSphere Web Client, RDP etc.) goes through this setup fine. I tested the QNAP NFS server beforehand using ESX host VMs atop of a VMware Workstation setup with a dedicated physical NIC and it had no problems. The ACL on the NFS Server share is permissive and allows all subnet ranges full access to the share. I can ping the QNAP from node1 vmk1, the adapter that should be used to NFS: ~ # vmkping -I vmk1 10.1.2.100 PING 10.1.2.100 (10.1.2.100): 56 data bytes 64 bytes from 10.1.2.100: icmp_seq=0 ttl=64 time=0.371 ms 64 bytes from 10.1.2.100: icmp_seq=1 ttl=64 time=0.161 ms 64 bytes from 10.1.2.100: icmp_seq=2 ttl=64 time=0.241 ms Netcat does not throw an error: ~ # nc -z 10.1.2.100 2049 Connection to 10.1.2.100 2049 port [tcp/nfs] succeeded! The routing table of node1: ~ # esxcfg-route -l VMkernel Routes: Network Netmask Gateway Interface 10.1.1.0 255.255.255.0 Local Subnet vmk0 10.1.2.0 255.255.255.0 Local Subnet vmk1 10.1.3.0 255.255.255.0 Local Subnet vmk2 10.1.4.0 255.255.255.0 Local Subnet vmk3 default 0.0.0.0 10.1.1.254 vmk0 VM Kernel NIC info ~ # esxcfg-vmknic -l Interface Port Group/DVPort IP Family IP Address Netmask Broadcast MAC Address MTU TSO MSS Enabled Type vmk0 133 IPv4 10.1.1.1 255.255.255.0 10.1.1.255 00:50:56:66:8e:5f 1500 65535 true STATIC vmk0 133 IPv6 fe80::250:56ff:fe66:8e5f 64 00:50:56:66:8e:5f 1500 65535 true STATIC, PREFERRED vmk1 164 IPv4 10.1.2.1 255.255.255.0 10.1.2.255 00:50:56:68:f5:1f 1500 65535 true STATIC vmk1 164 IPv6 fe80::250:56ff:fe68:f51f 64 00:50:56:68:f5:1f 1500 65535 true STATIC, PREFERRED vmk2 196 IPv4 10.1.3.1 255.255.255.0 10.1.3.255 00:50:56:66:18:95 1500 65535 true STATIC vmk2 196 IPv6 fe80::250:56ff:fe66:1895 64 00:50:56:66:18:95 1500 65535 true STATIC, PREFERRED vmk3 228 IPv4 10.1.4.1 255.255.255.0 10.1.4.255 00:50:56:72:e6:ca 1500 65535 true STATIC vmk3 228 IPv6 fe80::250:56ff:fe72:e6ca 64 00:50:56:72:e6:ca 1500 65535 true STATIC, PREFERRED Things I've tried/checked: I'm not using DNS names to connect to the NFS server. Checked MTU. Set to 9000 for vmk1, dvSwitch and Cisco switch and QNAP. Moved QNAP onto VLAN 11 (VM Management, vmk0) and gave it an appropriate address, still had same issue. Changed back afterwards of course. Tried initiating the connection of NAS datastore from vSphere Client (Connected to vCenter or directly to host), vSphere Web Client and the host's ESX Shell. All resulted in the same problem. Tried a path name of "VM", "/VM" and "/share/VM" despite not even having a connection to server. I plugged in a linux system (10.1.2.123) into a switch port configured for VLAN 12 and tried mounting the NFS share 10.1.2.100:/VM, it worked successfully and I had read-write access to it I tried disabling the firewall on the ESX host esxcli network firewall set --enabled false I'm out of ideas on what to try next. The things I'm doing differently from my VMware Workstation setup is the use of LACP with a physical switch and a virtual distributed switch between the two hosts. I'm guessing the vDS is probably the source of my troubles but I don't know how to fix this problem without eliminating it.

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  • Multiple Subnets on home network... would this work?

    - by rockinthesixstring
    We are looking at renting out the basement suit in our home and want to offer internet as part of the package. I however do not want the downstairs tennent to have access to our network (home office = private data). We currently have a pfsense firewall as our gateway and a Windows Server 2003 box is doing our primary DHCP (192.168.0.0/24) and DNS. Here's what I'd like to do... I'd like to setup another subnet on the DHCP server (192.168.1.0/24), and hook in another wireless router (as access point only) and address it as 192.168.1.1... from there the router will hook into our primary switch and then out through the firewall. Will Server 2003 (If I add a 192.168.1.x/24 IP to the nic) serve DHCP to the devices that connect to the new router, and will it isolate that from our network? Thanks in advance... I'm very new to multiple subnets.

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  • Smoothwall Express interface issues

    - by Timbermar
    I have a SmoothWall Express box that is currently configured with a Green and Purple interface. Both interfaces are in the same /24 subnet (which seems odd to me). The green interface (address of .254) has a DHCP server that is pushing addresses from .1 to .100 and the purple interface (.253) is pushing addresses from .101 to .120. Every machine here is trusted, and as such is connected to the green interface via a wired connection or wireless APs. Nothing is connected at all (port is physically empty, traffic graphs show no activity) to the purple interface. However, every machine here is pulling addresses from the purple interface. So the question boils down to, how do I remove/stop my machines from pulling from the purple dhcp interface? Also, shouldn't the purple interface (if we were using it for guest Wifi or something) be on a different subnet (i.e. 192.168.100.0/24 instead of 192.168.1.0/24 with all the trusted machines)?

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  • locate doesn't find all the files it should

    - by neubert
    I type in locate gmp.h at the prompt and get the following: /usr/src/linux-headers-3.13.0-24/include/linux/igmp.h /usr/src/linux-headers-3.13.0-24/include/uapi/linux/igmp.h /usr/src/linux-headers-3.13.0-24-generic/include/linux/igmp.h But when I do ls /usr/include/x86-64-linux-gnu/ I see this: a.out.h asm bits c++ fpu_control.h gmp.h gnu ieee754.h sys Why isn't locate locating /usr/include/x86-64-linux-gnu/gmp.h? edit: ls -l /usr/include/x64-64-linux-gnu/gmp.h says this: ls: cannot access /usr/include/x64-64-linux-gnu/gmp.h: No such file or diretory Why would ls /usr/include/x86-64-linux-gnu/ say it exists when ls -l /usr/include/x64-64-linux-gnu/gmp.h says it doesn't? A screenshot:

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  • Lot of Multicast traffic on LAN

    - by Nel
    Recently the whole network at work is being hit by multicast traffic originating on the LAN itself. I did some investigating and the service which seems to be responsible is ws-discovery. I have attached a screenshot of wireshark capturing the traffic. I have tried shutting down the source machine from which it was originating, but the multicast traffic still seems to be present in the network. My network topology 2 subnets - 10.10.10.0/24 and 10.20.10.0/24. Gateway is a debian system. We have 3 switches for 3 floors. They are all unmanaged Dlink 24-port switches. Multicast blocking at switch level is out of the question. Any solutions? :(

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  • Strange email coming from/to my computer

    - by Micah
    I'm running smtp4dev on my machine to trap anything going in/out of my computer on port 25 for testing purposes. Every so often this email gets trapped and I have no idea what it's from. I have Microsoft Security Essentials running on my machine and it hasn't identified and viruses or anything so I'm not sure what's going on. Here's the content of the message: Received: from [125.180.72.4] by 173.162.7.130 SMTP id O2Ncv62Ghig1vR for <[email protected]>; Fri, 24 Jun 2011 20:36:15 +0200 Received: from [125.180.72.4] by 173.162.7.130 SMTP id O2Ncv62Ghig1vR for <[email protected]>; Fri, 24 Jun 2011 20:36:15 +0200 Message-ID: <[email protected]> From: "" <[email protected]> To: <[email protected]> Subject: BC_173.162.7.130 Date: Fri, 24 Jun 11 20:36:15 GMT MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000D_01C2CC60.49F4EC70"

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  • How Can I: Generate 40/64 Bit WEP Key In Python?

    - by Aktariel
    So, I've been beating my head against the wall of this issue for several months now, partly because it's a side interest and partly because I suck at programming. I've searched and researched all across the web, but have not had any luck (except one small bit of success; see below), so I thought I might try asking the experts. What I am trying to do is, as the title suggests, generate a 40/64 bit WEP key from a passphrase, according to the "de facto" standard. (A site such as [http://www.powerdog.com/wepkey.cgi] produces the expected outputs.) I have already written portions of the script that take inputs and write them to a file; one of the inputs would be the passphrase, sanitized to lower case. For the longest time I had no idea what the defacto standard was, much less how to even go about implementing it. I finally stumbled across a paper (http://www.lava.net/~newsham/wlan/WEP_password_cracker.pdf) that sheds as much light as I've had yet on the issue (page 18 has the relevant bits). Apparently, the passphrase is "mapped to a 32-bit value with XOR," the result of which is then used as the seed for a "linear congruential PRNG (which one of the several PRNGs Python has would fit this description, I don't know), and then from that result several bits of the result are taken. I have no idea how to go about implementing this, since the description is rather vague. What I need is help in writing the generator in Python, and also in understanding how exactly the key is generated. I'm not much of a programmer, so explanations are appreciated as well. (Yes, I know that WEP isn't secure.)

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  • Ubuntu Server UFW NAT Issues

    - by William Fleming
    *nat :POSTROUTING ACCEPT [0:0] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A ufw-before-input -i tun0 -j ACCEPT -A ufw-before-output -i tun0 -j ACCEPT -A ufw-before-forward -s 10.8.0.0/24 -j ACCEPT -A ufw-before-forward -d 10.8.0.0/24 -j ACCEPT This input into my before.rules file stops me being able to ping the outside world. Before its fine i can ping google.co.uk after cant get out. Is there something wrong in my syntax here or what is the issue...? Im just trying to NAT my VPN so i can get internet access. Any thoughts would be greatly appreciated. Thanks William

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  • Wireless Keyboard/Mouse: Should batteries be removed when not in use?

    - by abel
    I recently bought a Logitech Wireless Keyboard and mouse. I use it almost daily but for a couple of hours only. The keyboard has 2 AAA batteries and the mouse has 1 AA battery. The box mentions that the keyboard has a 24 month battery life and the mouse has a 5 month battery life. Should I keep the batteries in the keyboard/mouse, when they are not in use?Is it safe? Does the battery life mean 24 months of continuous usage or 24 months of average usage?

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  • Cisco, How to do a subnetting scheme using VLSM and RIP-2?

    - by Andrei T. Ursan
    I'm studying for my CCNA exam and I have to create a VLSM scheme using RIP-2 for the following requirements: (this is an exercise) Use the class C network 192.168.1.0 network for your point-to-point connections Using the Class A network 10.0.0.0, plan for the following number of hosts in each location: New York: 1000 Chicago: 500 Los Angeles: 1000 On the LAN and point-to-point connections, select subnet masks that use the smallest ranges of IP addresses possible given the above requirements. In all cases, use the lowest possible subnet numbers. Subnet zero is allowed. My guess is the following: New York: S0/0 192.168.1.1 /24 Fa0/0 10.1.0.1 netmask 255.255.248.0 - because we need 1000 hosts Chicago: S0/0 192.168.1.2 /24 Fa0/0 10.2.0.1 netmask 255.255.252.0 (for 500 hosts) Los Angeles: S0/0 192.168.2.3 /24 Fa0/0 10.3.0.1 netmask 255.255.248.0 (for 1000 hosts) Is this a good configuration? I'm reading the CCNA book but not everything is very clear, so I said to do some exercises... Thank you!

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  • Only One GPU Detected in the Nvidia Quadra NVS 450

    - by Kyle Brandt
    I just built myself an new workstation and now only 2 of 3 monitors are working. I built the nvidia driver by downloading it and installing with ./Nvidia... Before when I ran nvidia-settings I saw two GPUs listed but now I only see one. Xorg Config (Not sure how I ended up with 3 devices in there): # nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 256.35 (buildmeister@builder101) Wed Jun 16 19:25:39 PDT 2010 Section "ServerLayout" # Removed Option "Xinerama" "1" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" RightOf "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor0" VendorName "Unknown" ModelName "DELL E207WFP" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor1" VendorName "Unknown" ModelName "DELL E207WFP" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor2" VendorName "Unknown" ModelName "DELL E207WFP" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro NVS 450" BusID "PCI:6:0:0" EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro NVS 450" BusID "PCI:5:0:0" EndSection Section "Device" Identifier "Device2" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "Quadro NVS 450" BusID "PCI:3:0:0" EndSection Section "Screen" # Removed Option "TwinView" "0" # Removed Option "metamodes" "DFP-0: nvidia-auto-select +0+0" # Removed Option "metamodes" "DFP-0: nvidia-auto-select +0+275, DFP-3: nvidia-auto-select +1680+0" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "1" Option "TwinViewXineramaInfoOrder" "DFP-3" Option "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-3: nvidia-auto-select +1680+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" # Removed Option "metamodes" "DFP-3: nvidia-auto-select +0+0" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen2" Device "Device2" Monitor "Monitor2" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection lscpi: 00:00.0 Host bridge: Intel Corporation 5520/5500/X58 I/O Hub to ESI Port (rev 13) 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) 00:02.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 2 (rev 13) 00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) 00:10.0 PIC: Intel Corporation 5520/5500/X58 Physical and Link Layer Registers Port 0 (rev 13) 00:10.1 PIC: Intel Corporation 5520/5500/X58 Routing and Protocol Layer Registers Port 0 (rev 13) 00:11.0 PIC: Intel Corporation 5520/5500 Physical and Link Layer Registers Port 1 (rev 13) 00:11.1 PIC: Intel Corporation 5520/5500 Routing & Protocol Layer Register Port 1 (rev 13) 00:13.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub I/OxAPIC Interrupt Controller (rev 13) 00:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13) 00:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13) 00:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13) 00:15.0 PIC: Intel Corporation 5520/5500/X58 Trusted Execution Technology Registers (rev 13) 00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller 00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 00:1c.1 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 2 00:1c.3 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 4 00:1c.4 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 5 00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller 00:1f.2 IDE interface: Intel Corporation 82801JI (ICH10 Family) 4 port SATA IDE Controller #1 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller 00:1f.5 IDE interface: Intel Corporation 82801JI (ICH10 Family) 2 port SATA IDE Controller #2 01:00.0 IDE interface: Device 1b4b:91a3 (rev 11) 02:00.0 USB Controller: NEC Corporation Device 0194 (rev 03) 03:00.0 PCI bridge: nVidia Corporation PCI express bridge for Quadro Plex S4 / Tesla S870 / Tesla S1070 (rev a3) 04:00.0 PCI bridge: nVidia Corporation PCI express bridge for Quadro Plex S4 / Tesla S870 / Tesla S1070 (rev a3) 04:02.0 PCI bridge: nVidia Corporation PCI express bridge for Quadro Plex S4 / Tesla S870 / Tesla S1070 (rev a3) 05:00.0 3D controller: nVidia Corporation G98 [Quadro NVS 450] (rev a1) 06:00.0 VGA compatible controller: nVidia Corporation G98 [Quadro NVS 450] (rev a1) 08:00.0 SATA controller: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 02) 08:00.1 IDE interface: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 02) 09:00.0 SATA controller: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 03) 09:00.1 IDE interface: JMicron Technology Corp. JMB362/JMB363 Serial ATA Controller (rev 03) 0a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) 0b:06.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link)

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  • How to forward UDP and TCP traffic from one IP to another

    - by Rishabh Agnihotri
    Well i have a server with two LAN Card Installed.I have a server in U.S and one in India.I have created a GRE tunnel to route all traffic from U.S Server to my Indian Server.My Traffic has UDP,TCP,HTTP,etc Traffic.Now i have two LAN Card on my Indian Server.Well i have configured two IPs on the system for some of my needs on the system.One is a /30 and another is a /24.Well now i want the /30 IP to talk to my /24 IP.Lets take a e.g the IPs are 180.151.130.34 - /30 and 103.243.19.254 -/24 I want to forward all the TCP,UDP,HTTP,etc like traffic coming to 180.151.130.34 to 103.243.19.254.In the sense i want to make them talk to each other in a way if a TCP/UDP Packet comes to 180.151.130.34 it should be forwarded to 103.243.19.254 and then that packet is sent back by 103.243.19.254 to 180.151.130.34.I am not able to configure this part.Can anyone tell me step by step how to do so? Well i forgot to specify i am using Windows Server 2008. Any help would be greatly appreciated.Thanks in advance.

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