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  • using nmap to guess remote OS and probe service details on a single port only

    - by WoJ
    I am looking at scanning with nmap a large network in order to identify the OS of devices (-O--osscan-limit) probe for details of a service on a single port (I would have used -sV for all open ports) The problem is that -sV will probe all the ports (which I do not want to do for performance reasons) and I cannot use -p to limit the ports to the one I am interested in as this impacts the OS fingerprinting. I could not find anything in the manual to limit the service probing. Thank you for any ideas (including other approaches outside of nmap, though I would prefer to stick to nmap)

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  • Dynamic VPN tunneling technologies

    - by Adam
    Ok, so I'm asking a more specific question this time. I'm writing a paper about Cisco's DMVPN and one of the tasks I have is to make the analysis of available network solutions which use dynamic VPN tunnels. Because the paper is about DMVPN, I have to compare those solutions to it. I know there are a lot of dynamic tunneling technologies but I'm looking for ones that can be compared to DMVPN. So the question is: are there any technologies which use dynamic VPN tunnels (not necessarily using crypto) that can be compared to DMVPN? What are those technologies?

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  • How do I get detailed information about what happens during logon

    - by Funky Si
    Due to my IT department leaving I am now responsible for all our IT systems. I now have several problems to get my head around and fix. I run Active Directory on windows server 2003 and use group policy to apply settings etc. Recently we have had some windows 7 clients added to our network, these are having awful problems with our logon scripts and drive mappings. For the most part my XP clients are working without a problem. What I want to know is what is going on during logon, as running the logon scripts after I have logged on often works. Does anyone know of a way to get detailed log information of what is happening before and during logon. Thanks for your help and any suggestions you have for tracking down the source of these problems.

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  • Extra Life 2012

    - by Chris Gardner
    Greetings, It's that time of year again. The time when I beg you for money for charity. See, unlike those bell ringers outside Wal-Mart, I don't do it when you have ten bazillion holiday obligations... Once again, I will be enduring a 24-hour marathon of gaming to raise money for Children Hospital in Birmingham. All the money goes straight to them, and you get to tell Uncie Samual that you're good for that money. I'd REALLY like to break $1000 this year, as I have come REALLY close for the past 2 year to doing so. Don't live near me? Live closer to a children's hospital in the Children's Miracle Network? It's OK. Go find a participant that is working for your hospital and hook them up. Just left me know, I will will join in with the karmic love you will already receive. This year, the event will take place on October 20th, beginning at 8 A.M. Once again, I will try to provide some web streams, etc, if you want to point and laugh (especially if I have to result to playing Dance Central at 4 AM to stay awake for the last part.) Look at it this way, I'm going to badger you about this for the next month. You might as well donate some money so you can righteously tell me to shut the Smurf up. You can place your bid at the link below. Feel free to spread the word to anyone and everyone. I thank you. The children thank you. Several breeds of feral platypus thank you. Maybe, just maybe, doing so will will help you feel the love felt by re-fried beans when lovingly hugged in a warm tortilla. Enjoy your burrito. http://www.extra-life.org/participant/cgardner

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  • LIfebook lh531 inbuilt card reader not working

    - by chandrasekar
    Inbuilt card reader (SD/PRO/SDHC) not working. When I insert the memory card the indicator comes for a milli second and nothing happens. When I do lspci it gives the out put which is pasted below: I use Ubuntu 11.10. Pl help pro-hq@prohq-LIFEBOOK-LH531:~$ lspci 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5) 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b5) 00:1d.0 USB Controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05) 01:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) pro-hq@prohq-LIFEBOOK-LH531:~$

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  • Unable to connect guest using VMWare Player

    - by eLAN
    I'm running RedHat server 5.3 as guest on Window XP VMware palyer. the network setting is set to "Host Only", but I have tries all other settings. I'm able to ping the guest machine, but I'm unable to connect it in any other way including webserver, Tomcat, Telnet, ssh. all of the services above are working from within the guest (using localhost). Guest firewall and SELinux are disabled. any idea on what I should check next? every idea will be appreciated... thnaks Ilan

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  • How can I figure out exactly which process is keeping my Mac from going to sleep and waking it up?

    - by pattern86
    I have read this knowledgebase article, but would like to know if there's a way to tell exactly which process is causing my Mac not to follow the sleep schedule I have set in System Preferences Energy Saver. I have narrowed it down to a being a process and will explain why I think so (see below). I am running OS X (10.6.5) on the new iMac 27" and I am certain it's not the following: The "Wake for Network Access" checkbox in Energy Saver settings (has never been a previous issue) Peripherals (has never been a previous issue) Any active GUI application (all are closed) Additional USB/FireWire drives (none are connected) Bluetooth (it's off) Sharing services (has never been a previous issue) The symptoms are as follows: The computer doesn't go to sleep at the predetermined time. It will wake up some number of hours after being put manually to sleep (but not within the first few seconds/minutes.) Is there a specific string I should be looking for in Console? I have tried searching for "wake" and "sleep" but can't make total sense of the results.

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  • How can I keep gnu screen from becoming unresponsive after losing my SSH connection?

    - by Mikey
    I use a VPN tunnel to connect to my work network and then SSH to connect to my work PC running cygwin. Once logged in I can attach to a screen session and everything works great. Now, after a while, I walk away from my computer and sooner or later, the VPN tunnel times out. The SSH connection on each end eventually times out and then I eventually come back to my computer to do some work. Theoretically, this should be a simple matter of just restarting the VPN, reconnecting via SSH, and then running "screen -r -d". However apparently when the sshd daemon times out on the cygwin PC, it leaves the screen session in some kind of hung state. I can reproduce a similar hung state by clicking the close box on a cygwin bash shell window while it's running a screen session. Is there any way to get the screen session to recover once this has happened, so that I don't lose anything?

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  • my sweet old VHS collection

    - by microspino
    Which is the best procedure and digital format to resurrect my old VHS library i a way I can see It on my LCD TV? I have a not so big collection 100 VHS I have plenty of storage I have a network media tank (A110 popcorn Hour but I can also purchase a new media center if needed) I have an old working VCR (but again I can pick a specific one new if you think It's better to save quality) The VHS cassette collection seems to have retained a good quality over the years. Of course I have some computer (either mac and pc) to do the process. Which software do I need/miss? Please give me some advice.

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  • Shooting Print Quality Pictures with a Camera Phone [Video]

    - by Jason Fitzpatrick
    Camera phones get a lot of grief for being underpowered but in this video tutorial the crew at SLR Lounge shows how basic technique and a good eye overcome all. Last year over at the photo blog FStoppers they put together a video showing off how you could use the iPhone as a fashion camera–essentially arguing that the camera wasn’t as important as the photographer. A lot of people said “Well yeah, but you had professional models and thousands of dollars in lighting equipment!” in reaction to the video. In turn the crew at SLR Lounge decided to make their own video showing that using only an iPhone camera and two reflectors (as well as an attractive but informal model). It of course helps to have some side kicks to help hold up your reflectors but the point still stands about modern camera phones being perfectly capable of good photos. The SLR Lounge iPhone Photo Shoot – A Follow Up Tribute to The FStoppers [YouTube] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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  • How to get Wifi Working Properly - I am Noob

    - by user287853
    I'm a noob to Ubuntu, but not computers. I installed a full version of Ubuntu version 12 whatever it is. I run it on a machine that has Win7/Win8 on another hard drive. My wireless adapter is some tiny USB stick I got on eBay - it works great in Windows, but I can't get it to work in Ubuntu. More precisely, Ubuntu is providing me a list (sometimes) of wireless networks in the area and when I try to connect to mine it just keeps password prompting me even though the one I use is correct. I looked over all the settings multiple times and don't believe there is anything in error regarding what it takes to connect to my network. So, I thought maybe it is a driver issue and came across NDIS. I thought I should try installing it, but I don't know how when I can't connect the Ubuntu machine to the Internet. I tried some commands to no avail. I have the Ubuntu installation disc and it shows a NDIS common and utils .deb files in there. Can someone out there help me out to get this wireless setup so I can get online?

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  • Adding a Windows Server 2012 Essentials server to an existing domain, without migrating the AD

    - by TiernanO
    I have an existing Active Directory in house, a mix between a Win2K8R2 and Win2K3 domain, and i would like to test out Windows Server 2012 Essentials BETA on the network. When walking though the install, it gives me the option of a new domain, or migrating from an existing domain. when clicking existing, it tells me i can only have one SBS server running on a domain at a time... So, i dont have any existing SBS servers in house (both are full standard or enterprise editions) but i do plan on keeping at least one of these extra servers running... So, how do i get a 2012 Essentials server to join a domain, and not migrate the existing domain? or if i do migrate, can i still get one of the other boxes to act as secondary controllers?

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  • Security of a free public VPN service

    - by Mark Belli
    I just started using VPNBOOK, which is a (very efficent) free VPN solution. I have a question: VPNBOOK user and pass used to connect to their vpn network are publicily available on their homepage; everybody uses them to connect to the vpn. Can a user intercept my wifi traffic and: Understand that my connections are directed to VPNBOOK servers. If point 1 is successful, then they could use VPNBOOK public user and pass to decrypt my traffic? I hope I am missing something, otherwise it would be a very big weakness and I would revert to a paid service (with a private account)

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  • wget has a 4 second delay

    - by guisius
    Hello. I have tried to wget a page with windows/mac, and the response is instant while the linux vesion needs to wait for 4 seconds before it shows the response. I just hope this can be solved. More information added: in Ubuntu : wget xxx://192.168.0.135/test.cgi?cmd= -O test.txt --2011-03-04 14:21:17-- xxx://192.168.0.135/test.cgi?cmd= Connecting to 192.168.0.135:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: `test.txt' [ <=> ] 17 --.-K/s in 0s 2011-03-04 14:21:22 (1.88 MB/s) - `test.txt' saved [17] while in Mac OS : wget xxx://192.168.0.135/test.cgi?cmd= -O test.txt --2011-03-04 14:22:33-- xxx://192.168.0.135/test.cgi?cmd= Connecting to 192.168.0.135:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: `test.txt' [ <=> ] 17 --.-K/s in 0s 2011-03-04 14:22:33 (755 KB/s) - `test.txt' saved [17] in ubuntu it delays 4 seconds while windows and mac will not i believe it may related to some setting in the network config such as packet size , window frame , but i have no idea to set this PS: because the limit of the post not allow to post the url so i mark this as xxx

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  • Sharing VPN from XP to Linux virtual

    - by user55513
    Hi I will keep the question simple with few details, if more is needed tell me. Thanks. I am playing around with networking and virtualbox. So I have 2 virtual machines. One is windows xp and another has linux in it. Windows XP has 2 network cards. One for the internet and the other to connect to the linux computer. Linux has one 1 card and it can only access the internet passing through Windows XP. Internet works fine until I activate OpenVPN on Windows. When I turn on VPN, Linux has no access to it. How can I make linux use VPN too? I believe it has something to do with using the "route" command on XP to send VPN traffic to Linux but I was not able to figure it out how yet.

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  • Seamlessly Authenticate with a Secondary Active Directory Server (when primary is down)

    - by LonnieBest
    How do you get workstations to (seamlessly) authenticate with a secondary Active Directory server when the primary one is down? Background: I added a secondary Active Directory server to a company's network, hoping that it would do authentication in the event that the primary Active Directory server was down. Although, the Secondary Active Directory server seems to be replicating correctly, authentication doesn't occur while rebooting the primary Active Directory server. Do I have a misunderstanding regarding the role of a secondary Active Directory server, or are there additional settings I must set to get the workstations to authenticate with it when the primary is down?

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  • software for compression-decompression of pictures

    - by infant programmer
    I need to send hundreds of pictures via email. The size is reaching 100s of MBs .. which is certainly burden on network. WinRar, 7-Zip aren't helping .. Would you like to suggest any software which can carry out compression so that I can reduce the size and send it via email, and decompress it at the other end .. opensource or freeware are more preferred .. paid-versions are appreciated too Edit: I am seeking an alternative software for winrar and 7-zip which is more efficient in compressing .. but still not losing any data ..

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  • How to install Ubuntu 12.04.1 in EFI mode with Encrypted LVM?

    - by g0lem
    I'm trying to properly install Ubuntu 12.04.1 LTS 64-bit PC (AMD64) with the alternate install CD ".iso" on a lenovo Thinkpad X220. Default Hard Disk (with a pre-installed version of Windows 7) has been replaced with a brand new SSD. The UEFI BIOS of the lenovo Thinkpad X220 is set to "UEFI Boot only" & "USB UEFI BIOS Support" is enabled (I'm using an external USB DVD reader to perform Ubuntu installation). The BIOS is a Phoenix SecureCore Tiano, BIOS version is 8DET56WW (1.26). The attempts below are made with the UEFI BIOS settings described above. Here's what I've tried so far: Boot on a live GParted CD Create a GPT partition table Create a FAT32 partition for UEFI System, set the partition to "EF00" type ("boot" flag) Leave remaining space unformated Boot on Ubuntu 12.04.1 LTS 64-bit PC (AMD64) with alternate CD: Perform the install with network updates enabled Use manual partitioning FAT32 partition created with GParted is used as "EFI System partition" Remaining space is set to be used as "Physical volume for LVM" Then "Configure encrypted volumes" using the previous "Physical volume for LVM" as the encrypted container, passphrase is setup. "Configure the Logical Volume Manager" creating a volume Group using the encrypted container /dev/mapper/sda2_crypt Creation of the Logical Volumes "Create logical volume", choosing the previously created volume Group Assign a mount point and file system to the Logical volumes : LV-root for / LV-var for /var LV-usr for /usr LV-usr-local for /usr/local LV-swap for swap LV-home for /home NOTE: /tmp would be in RAM only using TMPFS Bootloader step: neither my ESP partition (/dev/sda1, /dev/sda or MBR) seems to be the right place for GRUB, I get the following message (X suffix is for demonstration only): unable to install grub in /dev/sdaX Executing 'grub-install /dev/sdaX' failed This is a fatal error. Finish installation without the Bootloader & Reboot The system doesn't start, there's no EFI/GRUB menu at startup. What are the steps to perform a clean and working installation of Ubuntu 12.04.1 Precise Pangolin, 64bit version in U(EFI) mode using the encrypted LUKS + LVM scheme described above?

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  • Moving files from Public folder to C: takes a minute, even though they are same hard drive and same

    - by Jian Lin
    I have a big file, like 2GB, and would like to move it from Network -> Bookroom -> Users -> Public (this is the computer in the bookroom in the house) to c:\myfiles and they are actually on the SAME hard drive (and same partition). But copying still takes a minute or so? I thought if on the same hard drive and partition, then it is a "move" and it should take 2, 3 seconds only. that public folder also is \\Bookroom\Users\Public Update: Sorry, I actually mean "move" all the way... so it is not copy but move. So that's why I thought it should take 2, 3 seconds only.

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  • 12.10 Wireless hotspot configuration and internet browsing - question

    - by Indian
    In our campus we have a leased line connection from a service provider, which has an external IP W.X.Y.Z. This connection is distributed from the server several sub-networks / subnets as follows: Faculty: 172.33....../ 255.255.0.0 Administration: 172.34......./255.255.255.0 Students: 172.35...../255.255.216.0 A student has a laptop with a fixed IP address 172.35.23.123 / 255.255.216.0 where the IP address is on the ethernet port. The gateways for internet access are 172.31.1.1 and 172.31.1.2. Further the student has a wireless port which is inaccessible in the hostel area. The OS of the student is Ubuntu 12.10. The student in the possession of an android phone on which he wishes to install specific software and therefore wishes to activate the internet therein. The student has already attempted the Wireless hotspot solution which works for 12.04 but has not been successful. Various instructions on the internet have helped the student to do the following Installation of dhcp server and hostapd: sudo apt-get install isc-dhcp-server sudo apt-get install hostapd File: /etc/network/interfaces auto lo iface lo inet loopback auto wlan0 iface wlan0 inet static address 10.10.0.1 netmask 255.255.255.0 dns-nameservers 172.31.1.1 172.31.1.2 File: /etc/dhcp/dhcpd.conf subnet 10.10.0.0 netmask 255.255.255.0 { range 10.10.0.2 10.10.0.4; option routers 10.10.0.1; option domain-name-servers 172.31.1.1 172.31.1.2; default-lease-time 6000; max-lease-time 72000; } File: /etc/hostapd/hostapd.conf interface=wlan0 driver=nl80211 ssid=my_hotspot channel=1 hw_mode=g auth_algs=1 wpa=3 wpa_passphrase=1234567890 wpa_key_mgmt=WPA-PSK wpa_pairwise=TKIP CCMP rsn_pairwise=CCMP File: /etc/default/hostapd RUN_DAEMON=”yes” DAEMON_CONF=”/etc/hostapd/hostapd.conf” DAEMON_OPTS=”-dd” File: /etc/default/isc-dhcp-server INTERFACES=”wlan0” File: /etc/rc.local iptables -t nat -A POSTROUTING -s 10.10.0.0/16 -o eth0 -j MASQUERADE exit 0 After all the configuration, the computer is restarted. The student can see that the hotspot named “my_hotspot” is available. The hotspot also awards an address to the android phone. The student will now be able to browse the internet.

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  • Disk quota problem in Windows Server SBS 2003

    - by deddebme
    I have got a new job and the existing SBS 2003 domain setup is unsecure (i.e. everyone is a domain admin etc etc). There are lots of problem due to inexperienced "network admin", and I am trying to fix them one by one. There exist one issue which I found quite weird, that the "Quota" tab exists in the C:(NTFS) drive but not the D:(NTFS) drive. I played around with gpedit to enable disk quota (it was "not configured" before), but still I can't see that tab. Have you seen this problem before? How did you solve it?

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  • What's more cost effective, Hosting your web startup on Foss or Windows?

    - by user37899
    Hi, Not coming from the windows world, I'm confused about licensing. I think my knowledge may be out of date. Before we gave up with windows web servers (IIS 2), we used to have to pay Client Access licence's. This worked out quite expensive. Is it cheaper to host 1000's of users on Windows than use Free open source software tools? http://serverfault.com/questions/124329/network-load-balancing-efficience-and-limits. This post suggests I can pay $15 a month, for unlimited users. I certainly hope that this is unbiased view, I am a professional and use the right technology for the right job. I hope i am not feeling the wrath of a windows (or linux for that matter) fanboy. Perhaps a Microsoft certified Licensing person can clear this up. Should i be recommending to startups windows servers and products over lamp? Cheers!

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  • Lagging digital tv over ethernet

    - by Steve
    I have a HD Home Run TV over ethernet device, which connects the aerial to my router, and from there the router connects to my PC over about 15m of 100Mbps ethernet cable. The TV output lags every second. It does not do so for a computer much closer to the router. It is odd to me that the network rate is around 7Mbps on a 100Mbps cable. I am not downloading or streaming anything else on the affected computer. Is this lag caused by the speed of the cable, the length of the cable, or interference on the cable? I am considering swapping the ethernet cable with shielded ethernet cable.

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  • New Linux Mint User Networking questions

    - by nyCecilia
    I have a readynas that I've been using with XP, Vista, and Win7. Because of weirdness with Vista, it is set up for full read/write guest access. Now I have a Linux Mint netbook. I have set up smb on it and can read from the readynas smb shares, but I can't write. What else can I check? Part2--(keep in mind my network knowledge is small...or smaller) what is the difference between NFS and SMB, can a readynas be set up to allow access to the SMB shares via NFS (if I can figure out NFS lol)? A link to a guide for beginners would be appreciated, google searching "Linux Mint Readynas" doesn't give me anything useful.

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  • What happens when you add a Graphics card to a i7 with build in graphics (e.g. HD 4000)

    - by Matt
    I'm thinking of upgrading my computer from an AMD Phenom II X4 955BE with a AMD Radeon HD 6800 Graphics card (not integrated) to using a Intel Core i7 3770. As I have no knowledge of integrated graphics, my question is, what happens to the computing power when not using the HD4000 integrated graphics of the CPU (does it mean the CPU will run faster then it would if I relied on it?) Also what is better the CPUs inbuilt HD4000 or my Radeon Graphics card? I am mostly interested in terms of content creation: Using Adobe After Effects, 3D Rendering etc. Not too bothered about gaming performance. I will be using the spare parts of this build and older systems to make a second computer for network renders so what will be the advantages of keeping the Radeon with the current system for that?

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