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• Embedded Net DVR camera1 failed to start preview!

  - by user44212

  I am gettig the following error as "Embedded Net DVR camera1 failed to start preview!" when we are trying to login and view the preview of the cameras on the DVR 8116HCI-S Standalone. There is an IP Address assigned to the same via which we access the same. I checked the site for information here http://www.hikvision.com/en/Products_show.asp?id=32. But could not find any useful information relating to the error message. We can access the same via login in from one machine but we are not able to access it from more than one machine.

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• TP-LINK TD-W8151N Modem/router as just wi-fi router

  - by Reshma

  I am planning to buy TP-LINK ADSL wifi router (model TD-W8151N) for my Internet connection which provides Internet through ADSL telephone line. I am also planning to take cable internet in a few months which provides internet through a LAN cable without the need of any modem. So I would like to have my modem work for both connections which I am using. When using cable internet I want this TP-Link modem to work just as a wireless router (so that I can have the freedom to use my laptop in different rooms instead of sitting at a place by plugging in that cable). Is it possible to use this modem in that way? I don't have much knowledge about these things except that I can configure things as instructed. Please suggest me whether I should go ahead and buy this one or if there is any other modem in your view which can serve both my purposes, let me know. Operating System I am using: Windows 7

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• setup Mac Book Wifi interface as Wifi hotspot using specific DHCP option

  - by srjohnhuang

  I want to using my Mac Book as an access point. Besides that I also need to configure its DHCP server to not provide DNS info. For example, Mac Books AP's ssid is "MacBookHotspot". While my iPhone connected to "MacBookHotspot", I want the Wifi info displayed my iPhone would be looked like: IP ADDRESS DHCP(tab) IP Address 192.168.0.1 Subnet Mask 255.255.255.0 Router 192.168.0.254 DNS Search Domains Client ID (key point: DNS filed is blank) Does anyone have any good suggestion? Thanks!

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• Cross platform support for network attached USB hubs?

  - by larsks

  I am looking at network-attached USB hubs in order to run licensed software in a virtualized environment when hardware dongles are required. Are there any solutions that will work with both Linux and Windows? Most of the dedicated devices -- such as the Zonet ZUH2214 or the (oddly expensive) Digi AnywherUSB/2 -- appear to be Windows-only. Linux has the the USB/IP project, for which there appear to be Windows drivers, but the last "News" post on the site was in 2007, so I'm not entirely confident about the viability of the project. Has anyone out there found a solution that will work well in both environments?

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• Windows XP IIS5 performance across Network

  - by davidsleeps

  Hi, Just wondering whether Windows XP with IIS5 running needs any extra configuration to be suitable as a web server...I'm not considering using this for anything other than a web server on a small network for testing development etc One of the reasons I'm concerned though is that we've deployed an asp.net application to a workstation with Windows XP, and running the application using a browser on the machine (so accessing it through localhost/myApp/page.aspx and not accessing it through the network) runs the application really quickly. If another machine on the LAN accesses the same page (using http://ComputerName/myApp/page.apx) then the whole application runs noticeably slower...yet the computers are connected on a gigabit switch...so I wouldn't have thought network latency or bandwidth could be an issue... Does Windows XP need anything etc enabled or changed or network settings for it to work correctly?

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• Logging network activity of LAMP server using BASH

  - by Yarin

  I've got a Fedora LAMP server on Amazon EC2 functioning as a HTTP pseudo-proxy (Sorry, don't know the terminology- It's not a true proxy where requests are relayed through apache, rather client requests are being translated by a PHP script, which then sends a new request.) I'd like to be able to fully log the HTTP cycle CLIENT - PROXY PROXY - SERVICE SERVICE - PROXY PROXY - CLIENT I'm hoping to do this using BASH tools- thinking netcat? Looking for advice and examples. Thanks!

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• Browsing Playstation 3 from Ubuntu Box

  - by zfranciscus

  Hi, My Goal here is to be able to transfer files from my Ubuntu 10.04 box to my PS3 over a wireless network. My PS3 and my Ubuntu Box is on the same home network. These are some stuff that I tried: I can't see my PS 3 from 'Places ? Network' nor other computer that is running on windows. I am still puzzled by this fact. I have not tried ping-ing my PS3. I'll try that later today and post the result in the forum I install PS3MediaServer (http://code.google.com/p/ps3mediaserver/). Someone in the PS3 chat forum (http://www.ps3chat.com/playstation-3...lp-please.html) claims that it will enable your ubuntu box to browse PS3. So I downloaded PS3MediaServer, and ran the software. The status tab keep showing "Waiting ...". It seems that PS3MediaServer can't find my PS3. Some how I feel that 1 and 2 are related somehow.Perhaps that there is something wrong with my Ubuntu network settings that is preventing my ubuntu box from looking up other device on the network. I can go to the Internet fine, but I can't see other device on my network. Does anyone have any experience in this area. I would like to hear your experience and perhaps some solution. Any kind of hints or help will be greatly appreciated. Cheers

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• IP alias lost when changing main IP

  - by rmflow

  my /etc/network/interfaces: auto eth0 iface eth0 inet static address 192.168.3.75 netmask 255.255.255.0 gateway 192.168.3.0 Situation 1: After linux booted I set an IP alias: ifconfig eth0:0 192.168.3.111 Now ifconfig reports two IP addresses 192.168.3.75 at eth0 and 192.168.3.111 at eth0:0 When I change main IP to another network: ifconfig eth0 192.168.1.111 the alias eth0:0 is lost! Situation 2: After linux booted I set an IP alias: ifconfig eth0:0 192.168.4.111 Now ifconfig reports two IP addresses 192.168.3.75 at eth0 and 192.168.4.111 at eth0:0 When I change main IP to another network: ifconfig eth0 192.168.1.111 the alias eth0:0 stays! How do I properly change main IP, so all my aliases are not lost?

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• Why can I not access the internet when Windows 7 finds no issue with the ethernet connection and the network can see my device?

  - by WannabeCoder

  So I just moved from a house to an apartment. In the house and the apartment I had Uverse set up - and in both I had my desktop connected via a ~40 foot long cat5 cable. However, upon moving to the apartment I found that my ethernet connection no longer provides internet. This would seem like a mundane problem if not for: The router can see the computer on the network Windows 7 (the desktop's OS) detects no problems with the ethernet connection. Connections over the internet (i.e. browser windows, Pandora, etc.) do not immediately fail. Instead they load for 2 minutes and then finally give up. Devices connected over the Wifi (PS4, Laptop) access the internet just fine While removing the cat5 cable from my house, I accidentally damaged the locking tab but managed to bend it back into the appropriate position. I would suspect that a bad cat5 cable might be to blame if not for the above issues (thought I've heard bad cat5 cables cause the most nonsensical problems) and the fact that I tested the cat5 cable by having it share internet between my laptop (working internet) to my desktop and it functioned just fine and provided the desktop with internet. My ipconfig /all successfully finds a default gateway, DHCP server, and DNS server. What could possibly be causing the problem?

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• Most secure way of connecting an intranet to an external server

  - by Eitan

  I have an internal server that hosts an asp.net intranet application. I want to keep it completely and utterly secure and private however we need to expose some information through a WCF service to another server which hosts our external websites which CAN be accessed by the public. What is the best way to pass information between the two servers with regards to an IT setup, while keeping the intranet in house server completely secure and inaccessible? I've heard VPN was the way to go but I wanted to be sure this was the safest way. Another question what would be the most secure way of passing data in the WCF service?

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• Wicd not playing well with networks that utilize network access control

  - by Sion

  Starting a couple months ago (might be able to find exact date if necessary) my installation of Wicd stopped being able to see wireless networks that use NAC (Network Access Control) such as Aruba networks. But if I shut down Wicd and start NetworkManager I can connect to said networks and log in to them depending on what the NAC requires. This is the current wicd package installed: net-misc/wicd-1.7.1_pre20111210-r1 This is how I manipulate the network manager running: su -c'/etc/init.d/wicd stop; /etc/init.d/NetworkManager start' What would cause this specific of a problem to occur?

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• How to backup a networked drive?

  - by nute

  I have a networked drive (Iomega Media Drive). To be safe in case the drives crashes, I've decided to buy an additional networked drive (WD MyBook World). Now, how do I backup one onto the other continuously? The WD drive came with a backup software (trial version, they didn't say that when i bought it), however it doesn't allow me to select a networked drive, only local drives. How do I backup a NETWORKED DRIVE ONTO A NETWORKED DRIVE? Thanks

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• Using an audio cable (or similar) to create unidirectional communication from a secure server

  - by makerofthings7

  I'm interested in exploring how a semi-offline Root CA can be used to update CRLs to the sub CA's. This answer on Security.SE mentions using an audio cable for this purpose. Doe anyone have details on how an Audio cable (or similar) can be used to create a unidirectional path of communication? Since I'm a .Net programmer, I'm also open to code samples, drivers, etc that may enable this scenario.

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• internet disconnects

  - by Smokezzaj

  Internet disconnects and reconnects, computer is in a peer to peer workstation with two other computers XP o/s. Only one computer has this problem the other two don't disconnect. Computer's connect to switch no router is being used. Ipconfig shows a DHCP connection, local area connection status shows packets being sent out but packets are not being received or being received at a extremely slow rate. Tried Winstock tool, reinstalling network card driver, restored to previous date, checked ethernet cable and release/renew IP.

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• "entering link in browser" to "finding route to host" how it works?

  - by Algorist

  Hi, Is there a wiki or book, which explains what happens when user enters a link in the browser, and how the dns is resolved, how the router finds the route to the host etc.. I am mainly interested in routing the packets. Thank you

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• NIC models for HVM guests in Xen 4.0

  - by Jed Daniels

  Is there a list of NIC models that I should use with various HVM guests in Xen 4.0? Is there even a list of possible choices for the model=field? I'm planning on running both Windows and FreeBSD guests on the particular Xen box that I'm configuring now, and ideally I'd like a setting that can work on both of them and get me gigabit speeds without a lot of extra hassle loading special drivers (similar to VMware's e1000 NIC option). Any suggestions? The vif line I'm currently using in my config is: vif = [ 'type=ioemu,bridge=eth0,model=ne2k_pci,script=vif-ovs' ] This works in my Windows XP SP3 VM, but is only recognized as a 10Mbit interface. Changing to model=e1000 or model=i82557b resulted in Windows not being able to find a driver for the NIC.

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• How do I see what connections are being made?

  - by Coldblackice

  My DDWRT router is showing that my computer has a connection count around 600! The router is at 100% CPU use. How can I see what's making all the connections? So far, I've opened up Resource Monitor and checked the network tab. I can sort by which program is using the most network bandwidth (Pale Moon browser), but I can't see what's making all of the connections. Or rather, where all the connections are being toward (trying to find what tab must be making all of these connections). I've also tried netstat -A, but it apparently doesn't show the actual number of connections being made. At least, the list of established connections isn't very long, by any means (like enough to account for the 500+ connections apparently being made.

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• WHS - Windows Update Failure

  - by Kyle B.

  Clicking "Update Now..." inside my EX470 control panel for Windows Update produces the following error message: "Windows Home Server updates installation can not complete. Please try again later. If the problem persists, please restart the server." I have rebooted the server numerous times, and I have also used remote desktop to connect to the machine to perform the update this way, however the browser is unable to pull up http://windowsupdate.microsoft.com. This is very strange behavior because I am able to access all other sites (gmail.com, serverfault.com, etc). Would it be possible for someone to explain to me how I can check to see what is blocking the connection of this device, which apparently has a valid internet connection, to the Microsoft Windows Update site? note #1 Using the shortcut: %SystemRoot%\system32\wupdmgr.exe does not work either. It says "Connecting to 65.55.200.155..." but nothing ever happens. This is strange because all other sites seem fine. Also, I can connect to windowsupdate.microsoft.com on my local desktop so I know this is running as well

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• How to redirect all Internet traffic to OpenVPN Server

  - by JuliaS

  I have seen working solutions around the issue of forcing Internet traffic to go through the OpenVPN server but they are all done in Linux, all I want to know is how to add an entry to the route table in windows to make this happen. connectivity between the client and server is fine, my Windows 7 client can establish a connection to the Windows 2008 Server, but when established Internet traffic is still going from the local Windows 7 machine. Here are the details: Server: Windows 2008 Server with one NIC OpenVPN IP Address: 192.168.0.1 Local NIC IP Address (connects the server to the Internet): 10.242.69.107 Client: Windows 7 with one NIC OpenVPN IP Address: 192.168.0.2 ISP allocated IP Address: 10.0.8.2 (gateway 10.0.8.1) Server OpenVPN Config: dev tun ifconfig 192.168.0.1 192.168.0.2 secret static.key push "redirect-gateway def1" Client OpenVPN Config: remote xxx.xxx.com dev tun ifconfig 192.168.0.2 192.168.0.1 secret static.key I'm not an expert with adding routes...etc. I would be grateful if someone could let me know how to add this entry in my server/client route table. EDIT: Output from the client's netstat -rnv IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.0.8.1 10.0.8.2 20 10.0.8.0 255.255.255.252 On-link 10.0.8.2 276 10.0.8.2 255.255.255.255 On-link 10.0.8.2 276 10.0.8.3 255.255.255.255 On-link 10.0.8.2 276 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.0.0 255.255.255.252 On-link 192.168.0.2 286 192.168.0.2 255.255.255.255 On-link 192.168.0.2 286 192.168.0.3 255.255.255.255 On-link 192.168.0.2 286 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.0.8.2 276 224.0.0.0 240.0.0.0 On-link 192.168.0.2 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.0.8.2 276 255.255.255.255 255.255.255.255 On-link 192.168.0.2 286 ===========================================================================

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• Windows XP does not list WPA wireless networks

  - by Tomalak

  What can be the reason that Windows XP does not show WPA-encrypted wireless networks? The laptop I have problems with is an older model (Toshiba Satellite Pro 6100) with Windows XP SP3 on it, fresh install. The wireless network card in it is an Agere product that lists as "Toshiba Wireless LAN Mini PCI Card". The networks showed up perfectly before I first tried to connect to one (it was set to WPA2). The connection failed (the card supports WPA only), then something must have happend and Windows hides these networks now. A manually configured WPA setup via Windows' own wizard works, I'm using it right now. The network just won't show up in the list of available network on its own. I suspect that XP incorrectly set a flag somewhere that this network card does not support WPA. Is there such a flag, and if so, how can I change it back?

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• Cisco ASA: Routing packets based on where the connections started from

  - by DrStalker

  We have a Cisco ASA 5505 (version 8.2(2)) with three interfaces: outside: IP address 11.11.11.11, this is the default route inside: IP address 10.1.1.1, this is the local subnet newlink: 22.22.22.22, this is a new internet connection. We need to move VPN users from the 11.11.11.11 address to the 22.22.22.22 address, and we're using SSH on the ASA as to test and sort out the routing. The problem we have is this: If we define a particular IP as being on a static route out the newlink interface then it can SSH to 22.22.22.22 fine. If we do not define a static route then the traffic hits the ASA, but the return traffic does not come back over newlink; presumably it gets sent over the outside interfcae as that is the default route. We can't define a static route for each remote endpoint because there are dialup VPN users, who obviously change IP a lot What we need to do is configure the ASA so if a connection comes in on the newlink interface then the outgoing packets for that go over the newlink interface, not the default route. With iptables this should be do-able by marking the connection and doing mark-routing, but what is the equivalent for a Cisco ASA?

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• How do I stop apps trying to use a dial-up connection?

  - by ProfKaos

  Every now and again, I might have to use a dial-up internet connection via another tethered phone, i.e. Bluetooth connection to the GPRS modem. Now I am back on 'ops normal', i.e. using a shared internet connection on my own phone, or on my 3G stick, but some apps, especially IE9, keep popping up a 'dialup connection' dialogue, which I cannot dismiss enough times ever, to make to stay away. How can I tell these idiot applications that I no longer need a dial-up connection?

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• Using Static Public IPs and Private DHCP IPs on the Same Router

  - by Andrew Larsson

  I have a subnet of public IP addresses that my ISP has provided me with. They are routed through my router (how profound) that has a a static IP. I have successfully assigned the IPs from that subnet to various devices on my network. This works just fine, they get their own public IP, they can access the Internet, and the Internet can access them. However, I would like to also assign some private IPs on my network through that same router and put them behind NAT. Is this even possible? Could a VLAN be of use? I would like to avoid putting another router on the network, which makes this is quite an awkward question.

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• No communication on my VLAN?

  - by Donovan

  I am using a Netgear FSM7328S switch and have designated ports 19-24 as being part of VLAN # 3. I designated them all as untagged because I do not want them to switch traffic to any other port on the switch. I also removed them from the default, untagged, VLAN 1. My issue is that none of the ports 19-24 will communicate with eachother. My laptop plugged in with wireshark shows no switched traffic what so ever. Have I configured it wrong? Thanks, D

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• Bonjour/DNS Service Discovery queries

  - by senloe

  I'm trying to implement dns service discovery in my application (no, I'm not asking for a programmatic answer). What I believe is one of my big pain points is generating the query. I know I need to send out a multicast broadcast on port 5353 and want to look for devices of type _ipp._tcp and _print._tcp, but I don't know what the question section needs to look like. For example, in SSDP I sent out a query that looks like the following: "M-SEARCH * HTTP/1.1\r\n" "HOST: 239.255.255.250:1900\r\n" + "MAN: \"ssdp:discover\"\r\n" "ST: urn:schemas-upnp-org:device:Printer:1\r\n" "MX: 5000\r\n\r\n" From what I know about a DNS query I need to send something like: "_ipp.tcp,all,all" but I know there needs to be more. Any pointers to documentation, etc would be greatly appreciated! update rfc1035 appears to contain promising information re the message structure.

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