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• Windows 7 can't find Ubuntu computer by hostname

  - by endolith

  I got a new Windows 7 machine, and was using VNC, SSH etc to connect to my Ubuntu machine, and it worked fine previously connecting to the Ubuntu computer's hostname. Now it doesn't work if I use the machine's hostname, but it does if I use the local IP or DynDNS name. I can also access it from my Android phone using the local hostname over SSH. If I try to connect with SSH to the hostname, it says "Host does not exist". VNC says "Failed to get server address". NX says "no address associated with name", and I don't see it in Windows' "Network" folder. I've rebooted everything. I've turned off Windows firewall. It was working fine a few days ago, but now it's not. How do I figure out what's blocking it? Aha: It probably has something to do with Samba. I reset the Samba configuration the other day, and apparently this can affect it. http://ubuntu-virginia.ubuntuforums.org/showthread.php?t=1558925 I tried commenting out "encrypt passwords = No" as described there, but it still doesn't work.

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• Computer keeps restarting [closed]

  - by Joris

  I have a strange problem with my desktop pc, when I start it, it just restarts immediately, it displays the bios/motherboard logo and then restarts. I can't access the bios to edit settings because it restarts to fast. Then I tried different things to fix it with mixed success. (I also tried to reset the bios without success) I noticed that a capacity from the graphics card was broken (it looked exploded) so I ordered a new graphics card & plugged it in the computer. It didn't change much, still the same problem. Then I unplugged everything that's not necessary and put only 1Gig RAM in the motherboard (usually it has 4 x 1Gig RAM) and the computer started, then I putted another gig of RAM and the computer still started. (starting=booting windows) When I putted in the 3th RAM it didn't boot anymore (again restarting all the time) so I removed this 3th gig of RAM and this is where it gets weird. I expected the computer to boot again because it is exactly the same configuration as before - which worked - but the computer didn't want to start. It just gave the same problem as before (restarting all the time.. ) Anyone an idea what might be wrong?

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• Exchange 2003: Accounts with only OWA access unable to change passwords when expired or forced

  - by radioactive21

  We have accounts whith only OWA access, because they are generic accounts and we do not want the accounts to be used as machine logins. We have a password policy that users must change their passwords every 6 months. The problem we are having is that since the accounts are not loging into the machines, when the password policy kicks in it is preventing users with OWA only access from changing their password. Also, when we select "User must change the password at next logon" it also causes the same issue. We have two exchange servers the main one and a front end one. what we have been doing with these generic account is in properties, under the "account" tab we restricted "log on to" to the front end server. Just to clarify, when we have no restrictions, users can change their passwords via the web without any issues. It is only when we force them to only login via OWA that they cant change passwords. I tried adding our domain controler and main exchange server to the "This user can log on to The following computers" in the account tab, but still it is not allowing them to change passwords. Currently I have to manually reset the passwords for OWA only accounts. Is there anyway to allow OWA acconts to change passwords? EDIT: Users restricted to only OWA can change their password via the web browser without any issues when there are no restrictions. In other words normally they can just log into outlook via the web and change their password, but when the password policy expires or we force them to change their password at next login, they are unable to.

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• Locked out of our Comcast Business Gateway for seemingly no reason

  - by Tyler

  A little backstory... Last fall we migrated our ISP from AT&T to Comcast at one of our offices. At that time, we received a new modem/router from Comcast and we configured everything to our liking. We've never really had very many issues with the router aside from having to restart it every once in a while. Here's the problem... About three months ago I changed the password on the router from the default. After that, I logged into the router several times to make changes with no issue. During May I logged into the router to add two new static routes, no problems. A week ago, I tried to log into the router and could not. I tried the non-default password that I changed it to, the default, anything and everything I could think of and no luck. I restarted the router on Monday thinking it may just be locked up, but after the restart it would still not let me log in. This router is at our other office about 2 hours from here and I want to avoid having to drive down there and reset to factory defaults, reconfigure, etc. Any ideas?

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• "Ethernet" doesn't have a valid IP configuration

  - by Xuzuno

  I'm using an ethernet cord to connect to my internet and it has been working well until Thursday morning when I turned on my laptop (Windows 8) to see a yellow triangle sign in the bottom right hand corner, in front of the ethernet connected symbol. Since then I haven't been able been able to access the internet from my computer. When I hover over it, it says that it is an "Unidentified network" and there is "No internet access". I've run the Windows 8 troubleshooting and it says that the problem found was ""Ethernet" doesn't have a valid IP configuration", but I'm unsure how to fix it. I'm thinking that the problem is to do with my computer rather than my network, because I've tried another laptop (Windows 7) through the same ethernet cable and connection and the internet works fine on the other laptop. I've tried so many fixes that I've found online, with none of them actually working. Yesterday I even tried a full system reset, where I re-installed Windows 8, re-partitioned and wiped everything off the hard drive, but it still appears have the exact same problem. Today I also purchased and tried a new ethernet cable which didn't work, so I then purchased a USB to Ethernet adapter, to make sure that it wasn't my ethernet port on my laptop that was faulty. That didn't work either, and the same problem still remains. I feel like I've tried everything, so can someone please help me?

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• Upgrading PHP, MySQL old-passwords issue

  - by Rushyo

  I've inherited a Windows 2k3 server running an XAMPP-installation from the stone age. I needed to upgrade PHP to facilitate an upgrade to MediaWiki to facilitate a new MediaWiki extension (to facilitate some documentation to facilitate doing my job to facilitate getting paid to facilit... you get the idea). However... installing a new version of PHP resulted in PHP's MySQL libraries refusing to communicate using MySQL's 'old style' 152-bit passwords. Not a problem in theory. The MySQL installation is post-4.1, so it should have the functionality to upgrade the user's passwords from 152-bit to 328-bit (what a weird hashing algorithm...). I ran the following: SET PASSWORD = PASSWORD('foo'); on MySQL but querying: SELECT user, password FROM mysql.user; returned just the same password I started out with - 152-bit. Now... I suspect you're thinking 'AHA! old-passwords is on!'. Unfortunately it's not - I've disabled it in the configuration (explicitly set it to 0), made doubly sure I have an absolute reference to that configuration file and ensured the service isn't using the --old-passwords flag. The service was reset after each and every operation. So I went onto another system and generated the 328-bit hash on there, copying the hash over to the first MySQL instance. Unfortunately, that didn't work either (I did remember to FLUSH PRIVILEGES). The application error is: "'mysqlnd cannot connect to MySQL 4.1+ using the old insecure authentication. Please use an administration tool [...snip...] Is there anything else I can try to get PHP to recognise MySQL as not using the 'old insecure authentication'? MySQL seems to be stuck in 'old-passwords' mode and I can't get it out of it.

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• Monitoring instantaneous network throughput at one second intervals?

  - by Shaddi

  For a testing setup I have, I need to monitor the throughput through a "router"* at regular intervals of around 5 seconds or less (sub-second intervals would be very nice, but not required). Ideally, I would be able to generate a file which contained both the number of bytes and packets seen during each interval. I will eventually be generating a time-series of throughput from this data. On a previous setup using an older version of FreeBSD, there was a tool called "bpfmon" which gave me this information. However, I need to do this under a modern version of Linux (namely, Ubuntu 11.04). I have looked at both iptraf and iftop, but these do not appear to provide the resolution I need, nor do they seem to easily allow scraping the data I need. I understand iptables statistics may be able to give me what I'm after, but the examples I've seen of this seem to rely on repeatedly reading and resetting traffic counters, which seems like it could give inaccurate as read/reset is not an atomic operation. I already capture a tcpdump trace of the traffic I'm interested in on the link I want to monitor, so I am open to approaches which simply parse that. I feel like this must be a common problem though, so I am hoping there will be a standard "best practice" tool for accomplishing this. *I say "router" in quotes because I am really talking about a machine with two bridged NICs through which all the traffic I'm interested in passes.

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• Wireless Access Point stopped working

  - by Alex Pritchard

  I have a simple LAN set up at home using a Linksys WRT54GSV4 as my primary router and an Encore ENHWI-2AN3 as an access point. I connect the Encore to the Linksys by running a cable from one of the Linksys LAN ports into the Encore WAN input. I originally configured this using the Encore setup wizard, setting the device up in AP Router Mode. It detected the input network and worked about as expected, creating a second network that used my primary network to connect to the internet. It worked fine for about 2 weeks, then abruptly cut out today. I checked to make sure the network was still live through the cable going into the Encore (provides internet when connected to a laptop directly) and that devices are still able to connect to the network being broadcast by the Encore. When I try to rerun the connection wizard on the Encore, I receive the message "No Services found in WAN port." The WAN Settings is no longer retrieving a dynamic ip from the line. I tried providing a static IP, assigning an IP address within the subnet range of my primary router that wasn't being used and pointing the Default Gateway to the Linksys IP, but this did not work either. When I plug the cable into the WAN port, an internet light comes on that is not lit when a live network is not connected. I've tried doing a hard reset on the Encore (held down the rest button until the lights flashed, reconfigured from scratch), but the WAN settings are still not detected. Also tried powering off and on the modem, linksys, and encore. Any suggestions would be appreciated!

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• How to fix high Load_Cycle_Count laptop drive (TOSHIBA MK6006GAH in Vaio TX1XP)?

  - by Sam Brightman

  Hoping someone knows exactly what's going on here. It seems this drive has some combination of aggressive power saving settings and Ubuntu defaults that has massively increased the Load_Cycle_Count for the drive: https://wiki.ubuntu.com/DanielHahler/Bug59695 So the drive is now so slow that it cannot boot because it takes long enough to access the data that the kernel will not recognise it properly. I'm not worried about the data on the drive, but would really like to keep the laptop functioning. There is some indication that this is possible because the figure is still low 200,000s and most drives supposedly go to 600,000. Additionally, SMART tests pass and consider the drive healthy and without errors. But the really surprising thing was when I ran mhdd... Every single read came up red (slow) until I pressed 'R' for reset drive. I noticed the next read was normal speed, so held down 'R'. Magically the drive read perfectly for as long as I held the key BUT resumed slow (and noisy) seeking/reading after releasing. I don't think the source code to mhdd is available, so I'm not exactly sure what this means (besides, I don't know enough low-level HDD stuff either). It seems like the drive should be able to work, but is stuck trying to power save or something. There are no BIOS options on the laptop. Does anyone know how I can stop the drive from doing extremely slow/noisy operations like this? Or is constantly resetting the drive also damanging, and only causing it to work well by luck (i.e. not a suggestion that it's fixable)?

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• Access to CD/DVD Drive is Denied through Windows 7 Explorer (Permission Problem)

  - by Synetech inc.

  A while ago I started having trouble with my optical drives. Both of them keep showing up in Explorer as CD/DVD drives on boot, but as soon as I put a disc in either one, it suddenly turns into a hard-drive—“local disk” is displayed in the Type column, though the File System column remains UDF/CDFS. (I though that maybe it was a permission issue on the registry key in HKLM\System\CurrentControlSet..., but I’m not so certain because of the next test.) When I try to open a disc (of any type), I get an access denied error message. If I open an elevated command-prompt, I am able to access the files. Also, if I kill Explorer and run it from an elevated command-prompt (thus giving Explorer elevated permissions), then I can access the files from Explorer. I’ve tried uninstalling and reinstalling the devices without success. The security dialog indicates that there are none set for the drives (no owner and no permissions). I tried setting the owner, but am only able to do so if there is a disc in it (it complains if it is empty), but the settings do not stick (if I immediately open the security dialog after setting it, it is empty again). I tried setting permissions, but that gives an error. I’ve included a screencap-flowchart of the security dialog of one of the drives below. (Yes, I made sure that there are no upper- or lower-filters, and yes, I ran sfc. I also made sure that in the policy editor, “devices: restrict CD-ROM...” is not set.) Does anyone know what the owner and permissions are supposed to be for optical drives and how to reset them?

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• ASUS laptop doesn't charge/use the battery after reinstalling Windows 7

  - by Stan

  I've done a clean install of Windows 7 x64 on an ASUS X501A laptop. The battery is detected and shows in the system tray as "plugged in, charging". However the charge level stays at 76% and if the AC cord is plugged out the laptop turns off. The laptop does not turn on without being plugged in either. Everything worked perfectly prior to reinstall. I've tried: Downloading and installing all the ASUS drivers, including the ATK ACPI driver Checking the BIOS - there do not seem to be any battery-related settings Flashing the BIOS to the latest version Uninstalling Microsoft ACPI-Compliant Control Method Battery in device manager as suggested on the internet Full power discharge/ATX reset as suggested by ASUS support: remove mains power charger, remove battery, press and hold power button for 10 seconds, reconnect battery and mains and turn on I have a feeling all this may have something to do with the EFI BIOS that comes on the laptop. During the reinstall I had to delete all partitions and start anew, because the Windows installer complained about the improper order of GPT partitions. The EFI System Partition was recreated by the installer, and I am guessing that it may be missing the particular ACPI driver needed to make the battery work. I've tried researching this, but could not come up with any useful info. I am hoping someone here may know a bit more about this and maybe help me understand what's going on and how to fix it. Barring that, I'll have to re-image the drive off an identical ASUS laptop with stock install and hope it fixes things.

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• How to Set Up an SMTP Submission Server on Linux

  - by Kevin Cox

  I was trying to set up a mail server with no luck. I want it to accept mail from authenticated users only and deliver them. I want the users to be able to connect over the internet. Ideally the mail server wouldn't accept any incoming mail. Essentially I want it to accept messages on a receiving port and transfer them to the intended recipient out port 25. If anyone has some good links and guides that would be awesome. I am quite familiar with linux but have never played around with MTA's and am currently running debian 6. More Specific Problem! Sorry, that was general and postfix is complex. I am having trouble enabling the submission port with encryption and authentication. What Works: Sending mail from the local machine. (sendmail [email protected]). Ports are open. (25 and 587) Connecting to 587 appears to work, I get a "need to starttls" warning and starttls appears to work. But when I try to connect with the next command I get the error below. # openssl s_client -connect localhost:587 -starttls smtp CONNECTED(00000003) depth=0 /CN=localhost.localdomain verify error:num=18:self signed certificate verify return:1 depth=0 /CN=localhost.localdomain verify return:1 --- Certificate chain 0 s:/CN=localhost.localdomain i:/CN=localhost.localdomain --- Server certificate -----BEGIN CERTIFICATE----- MIICvDCCAaQCCQCYHnCzLRUoMTANBgkqhkiG9w0BAQUFADAgMR4wHAYDVQQDExVs b2NhbGhvc3QubG9jYWxkb21haW4wHhcNMTIwMjE3MTMxOTA1WhcNMjIwMjE0MTMx OTA1WjAgMR4wHAYDVQQDExVsb2NhbGhvc3QubG9jYWxkb21haW4wggEiMA0GCSqG SIb3DQEBAQUAA4IBDwAwggEKAoIBAQDEFA/S6VhJihP6OGYrhEtL+SchWxPZGbgb VkgNJ6xK2dhR7hZXKcDtNddL3uf1YYWF76efS5oJPPjLb33NbHBb9imuD8PoynXN isz1oQEbzPE/07VC4srbsNIN92lldbRruDfjDrAbC/H+FBSUA2ImHvzc3xhIjdsb AbHasG1XBm8SkYULVedaD7I7YbnloCx0sTQgCM0Vjx29TXxPrpkcl6usjcQfZHqY ozg8X48Xm7F9CDip35Q+WwfZ6AcEkq9rJUOoZWrLWVcKusuYPCtUb6MdsZEH13IQ rA0+x8fUI3S0fW5xWWG0b4c5IxuM+eXz05DvB7mLyd+2+RwDAx2LAgMBAAEwDQYJ KoZIhvcNAQEFBQADggEBAAj1ib4lX28FhYdWv/RsHoGGFqf933SDipffBPM6Wlr0 jUn7wler7ilP65WVlTxDW+8PhdBmOrLUr0DO470AAS5uUOjdsPgGO+7VE/4/BN+/ naXVDzIcwyaiLbODIdG2s363V7gzibIuKUqOJ7oRLkwtxubt4D0CQN/7GNFY8cL2 in6FrYGDMNY+ve1tqPkukqQnes3DCeEo0+2KMGuwaJRQK3Es9WHotyrjrecPY170 dhDiLz4XaHU7xZwArAhMq/fay87liHvXR860tWq30oSb5DHQf4EloCQK4eJZQtFT B3xUDu7eFuCeXxjm4294YIPoWl5pbrP9vzLYAH+8ufE= -----END CERTIFICATE----- subject=/CN=localhost.localdomain issuer=/CN=localhost.localdomain --- No client certificate CA names sent --- SSL handshake has read 1605 bytes and written 354 bytes --- New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA Server public key is 2048 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : DHE-RSA-AES256-SHA Session-ID: E07926641A5EF22B15EB1D0E03FFF75588AB6464702CF4DC2166FFDAC1CA73E2 Session-ID-ctx: Master-Key: 454E8D5D40380DB3A73336775D6911B3DA289E4A1C9587DDC168EC09C2C3457CB30321E44CAD6AE65A66BAE9F33959A9 Key-Arg : None Start Time: 1349059796 Timeout : 300 (sec) Verify return code: 18 (self signed certificate) --- 250 DSN read:errno=0 If I try to connect from evolution I get the following error: The reported error was "HELO command failed: TCP connection reset by peer".

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• FTP account ownership on vhost directory makes Apache not run website correctly

  - by CodeShining

  I've purchased a virtual server, where I'm given of a non-root sudo-enabled user. Actually I do need to create an FTP account that's not that sudo-able account, so I created a no-login account just for that purpose. I've set up VSFTPd correctly, also enabling the "userlist" feature, to specify which user are permitted to use FTP. Then I created an empty directory under my sudo-able account, and I gave ownership permissions to the second account, so to make it more easy to understand, let's say the main account (the one I do use to manage my VPS) is called ubuntu and the FTP-user is named ftpuser, I created a directory /home/ubuntu/mywebsite giving the ownership to ftpuser:ftpuser. Then I uploaded a worpdress website, whose default permissions are 755 and 644. The issue is that Apache is not given of any privilege to run the website. How can I make the website run properly, and which is the most secure? Should I run that virtualhost with another user (if it's possible)? Should I force the FTP user to use the www-data group (if that's possible) and run with permissions like 775 and 664? How can I solve this issue? Any help is appreciated, I'd like to run it using the default permissions, so any update won't break up anything (because of permissions reset).

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• Windows Share permissions

  - by Armando

  I have a SQL/File server that I am replicating a File Share and SQL instance, using ArcServer RHA, to a Replica server. Everything seems to work as far as the replication of the SLQ instance and Share is concerned. When I fail over to the Replica server the DNS Host A record is modified to point to the Replica Server IP Address so if I do an NSLOOKUP on ServerA it then points to the IP Address of ServerB. Ans since the SQL instance is named the same I can still map my ODBC connections to ServerA and I can still make a SQL connection. When I try to do a \ServerA\Share I get an error that says I do not have permissions to the Share. I think this is because it uses keberose authentication and the Share is tied to the actual sever host name. I have tried puting in a CNAME and pointing it to ServerA and Disabling Strict Name Checking on ServerB as well as adding the CNAME to the OptionalNames in the registry but I am still getting the error when I have the ServerA powered off. Is there a way to reset the Authentication of the Share to use the DNS Cname?

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• Win7 Hangs During App Install/Upgrade/Uninstall

  - by JadeMason

  I have a custom built PC that intermittently hangs when installing, uninstalling, or upgrading applications. Technical Specs ASUS P5E w/ WiFi Motherboard Intel Core2 Quad Q6600 Processor 4x 2GB G.Skill DDR2 800 SDRAM ASUS EAH2900XT / Radeon HD 2900XT 512MB Video Card Under normal operation the machine runs reliably, even under heavy load, such as video transcoding. The temperature never gets anywhere near where I would worry about it. However, the machine regularly hangs (complete lockup, no response to keyboard or mouse, no activity on-screen) when either installing a new application, uninstalling an existing application, or applying patches to existing applications or the OS. This is extremely frustrating as this machine is primarily used as a HTPC. Several apps are configured for automatic updates, and these updates sometimes cause the machine to lockup while we are watching content on the PC. In previously investigating this issue, I found one likely problem could be my Logitech Webcam. The Logitech software has a bug that leaves an entry in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Control\SessionManager\PendingFileRenameOperations Which references the Temp directory. My registry contained this error, so I uninstalled the webcam software and deleted this registry key value. Unfortunately, the machine will still intermittently hang. I've noticed that the hangs always happen when an install/upgrade/uninstall requires elevated privileges (presumably to modify the registry). I can typically get at least one install/upgrade/uninstall to complete after a reboot, but after that it is a game of russian roulette to see if the operation will succeed or hang the machine. The event log is not helpful, as log messages end at the time of the hang, with no record of a warning or error. My only recourse when the machine hangs in this way is to perform a hard reset/power cycle. Any tips on how to further debug this issue are greatly appreciated.

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• Windows 7 Taskbar resets on every login

  - by Arne Mertz

  I like to reorder my Taskbar a bit, other than the Windows 7 default is. I use two "rows", the lower is for quicklaunch and other toolbars: This works perfectly, as long as I don't log off from the computer. Every time I log in, Windows 7 has messed up/reset the toolbar positions like this: So I have to drag them into position again and again, every morning. Fixing the taskbar positions won't help, I tried to google for the problem but it does not seem to be very common. Does anyone recognize that problem and has a solution? Update: This is not the AutoLogon bug. AutoLogon is off. We have installed Novell at our company, and it does not matter wether I log directly onto the Novell network or only to the computer first and to Novell later. Update2: I get the same issue when I logon without Novell, i.e. when I log on only to the computer. When I boot in safe mode, the taskbar looks essentially the same: Update3: KB979155 says it's "not applicable to my system". Creating a neew user is not an option since I don't have the admin privileges to do that - I have almost any other local admin privileges, though.

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• What is the solution to enable Dymo Turbo 400 Label Printer to work on Win 7 / 64-bit?

  - by mdpc

  It's Christmas time and time for printing labels for all those Christmas cards. I've upgraded to Windows 7 64-bit from XP. I've been unsuccessfully attempting to get the connected Dymo 400 Turbo label USB printer to work again. The latest manufacturer drivers have been successfully loaded and installed. The drivers are supposed to work on Windows 7/64-bit. The Win 7 system(s) in question are patched and up-to-date on that score. The Windows Update site responds with a driver when the USB cable is connected to this printer. The printer queue seems to be established correctly. What happens is that I submit a job to the printer (either using the DYMO s/w or not), it delays for a period of time, and then I get the message 'printing error'. Can't seem to locate the appropriate error in the new and improved event log. Several combinations of rebooting, re-installation and power cycling components fail to make the printer work. Sometimes during some type of reset it spits out the last thing to be submitted, but that seems intermittent. I have tried different USB cables and different USB (2.X) ports as well. I have run the Windows 7 troubleshooter it tries to fix the problem but alas it doesn't. Interestingly, trying the USB printer (and its associated manufacturer drivers and s/w) on another Windows 7 64-bit system has the identical failures noticed on the original system. I did not find anything on the manufacturers' site concerning this problem. The printer has no hardware problems or issues.

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• IPTABLES syntax help to forward Remote Desktop requests to a VM [CentOS host]

  - by NVRAM

  I've a VM running MSWindows XP hosted on my CentOS 5.4 machine. I can rdesktop into it from the hosting machine and work just fine using the private ddress (192.168.122.65), but I now need to allow Remote Desktop access from other computers (not just the machine hosting the VM). [Edit] I only need to allow access for a day or so, so don't want to add a NIC (for XP activation reasons). Could someone help me with the iptables syntax? The VM is on a private/virtual network: 192.168.122.65 and my CentOS machine is on a physical network, at 10.1.3.38 (and 192.168.122.1 as the GW for the virtual net). I found this question, but none of the answers seemed to work and I'm a bit timid at blindly trying variations. My FORWARD rules are as listed. Thanks in advance. # iptables -L FORWARD Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable RH-Firewall-1-INPUT all -- anywhere anywhere [Edit] If I do play "blindly" is there a simple way to reset the settings on CentOS (a la service network restart)?

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• Data loss by randomly unplugging the computer during runtime

  - by Kan

  I'm from Austria and we and the Germans have some sort of bad science-show which runs every day. What I call it would rougly translate to "half-knowledge" if you want so. By the way: It is called "Galileo". So they thought they'd make a computer myth busters video right now, and I couldn't believe what I saw and heard... The strangest thing to me was that they asked: "Does unplugging the computer damage your data?" Then they started up some machine with Vista on it, started copying some files and randomly unplugged the PC cable, the whole thing around 50 times. After their computer continued to start up normally, they just said "nothing can happen, your data or computer can't be damaged". They of course excluded unsaved data in running programs like text editors from this. I asked myself: What the hell are their "computer experts" saying? You can't tell by unplugging the cable 50 times if that can damage your computer. Can unplugging the cable during runtime cause data loss (as said by the moderator of the show)? (I destroyed my windows registry once during a reset)

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• Client cannot access my IIS7 web server

  - by Soccerwiz

  I have a Windows 2008 web server on running IIS 7 with about 25 websites. One of those sites is an SaaS application that is accessed constantly throughout the day. However, one particular client keeps getting blocked from my server. They will be using the service, and then all of a sudden they cannot access the program, or any other site on the server. The entire office of 4 users is blocked from accessing anything on the web server. A trace route reveals they get all the way to the server before they are blocked. However, they can access a linux server that is a different VM with a different IP on the same physical server. Also, when they are blocked from their office, they can still access the site from their mobile phone or local Starbucks. They can also occasionally reset the router and gain access to the web server again as they are on a dynamic IP address. I checked IIS and allow all IPs to access the server. There is nothing in the logs the says anything about a user being banned. I really have no idea what is causing this? Could it be a virus on their end? I have even moved the SaaS to a completely new server in a different location, and they were working fine for about a month, and then the problem started occurring again. Are there any hidden blacklists in IIS? Or is it a routing issue on their end?

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• Cannot install windows. Compaq Presario CQ62

  - by Matthew

  I bought a used Compaq Presario CQ62 for cheap, and went to install windows on it. I formatted the partition and went to install when I got this error.... Windows cannot install required files. The file may be corrupt or missing. Make sure all files required for installation are available and restart the installation. Error code: 0x80070017 I have used this disk before with no problems, but internet searching suggested I burn one at 2x speed because that helps for some reason... I'm burning one now, but my question is, why would I get this error, OTHER than the disc being bad? I'm pretty certain this one isn't as I have used it before... (ok so the slowly burned cd (using imgburn) didn't work either so it's DEFINITELY not the disc) Thanks in advanced for any answers Also I took one stick of ram out because internet searching also suggested that, but it didn't make a difference. Also I ran memory and hard drive checks and they passed fine. Also I reset the motherboard options to default What could it be!? Help I'm completely stumped...

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• why would resetting the Netgear N300 router fix my Win 7 laptop's slow wifi?

  - by rjnagle

  In the past day the wifi download speeds of my Win 7 HP 64 bit laptop have slowed considerably. I am trying to troubleshoot the problem and to figure out whether it's hardware related (i.e., is the Intel(R) Centrino(R) Wireless-N 2230 the problem?) or router related. I have a Netgear N300 router connected to my modem. I'm using Speedtest to measure my speed. First, during my problem state, my ipad can download and upload at normal speeds. It's only my Win 7 laptop which is having problems. Because my ipad downloads at normal speeds, that would tell me that the problem is specific to the laptop (either HW or SW). But when I restarted my Netgear router, the laptop wifi problems disappeared. That just doesn't make sense. If we know that one device can connect properly to the router, why would a laptop have problems? What are some possible reasons why this might happen? Also, during my problem state, I noticed that on my laptop upload speeds were faster than my download speeds. Anybody have a guess about what might cause upload speeds on one device to be faster than another? Is there any actions i could take (or options to enable) so this problem won't occur. (I initially thought my problem might be software related or memory related -- Norton AV or browser plugins. But even after I disabled everything and made sure memory footprint was minimal, the slowdown was still occurring -- and it solved itself altogether when the router was reset).

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• Specify default group and permissions for new files in a certain directory

  - by mislav

  I have a certain directory in which there is a project shared by multiple users. These users use SSH to gain access to this directory and modify/create files. This project should only be writeable to a certain group of users: lets call it "mygroup". During an SSH session, all files/directories created by the current user should by default be owned by group "mygroup" and have group-writeable permissions. I can solve the permissions problem with umask: $ cd project $ umask 002 $ touch test.txt File "test.txt" is now group-writeable, but still belongs to my default group ("mislav", same as my username) and not to "mygroup". I can chgrp recursively to set the desired group, but I wanted to know is there a way to set some group implicitly like umask changes default permissions during a session. This specific directory is a shared git repo with a working copy and I want git checkout and git reset operations to set the correct mask and group for new files created in the working copy. The OS is Ubuntu Linux. Update: a colleague suggests I should look into getfacl/setfacl of POSIX ACL but the solution below combined with umask 002 in the current session is good enough for me and is much more simple.

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• Uninstalled server 2008 now router won't handle DHCP

  - by john

  My set up is this. server behind router, router has a server and switch connected to it with multiple computers. router used to serve DHCP and DNS, a couple of days ago installed AD, DNS and DHCP on the server, and the server gave out IP's. For various reasons we had to uninstall the domain on our server. I removed AD, DHCP and DNS from the roles and set the router back to serving DHCP and DNS. Now I can't get computers on the network. I reset my router back to factory defaults, and if I plug a computer directly into the router I can get a IP address, but all the computers behind the switch can't get an IP address and can't see the router. All my computers say unidentified network, and if I ping the router it says host is unreachable. On the other hand, my wireless devices are just fine and connect no problem. But for desktops, ipconfig /release doesn't release anything and /renew can't find a server to renew on. My router log shows several FIN scans but they are from innocuous websites (google, netgear) and it shows a couple of smurf attacks but they are all from my external IP. Any ideas? the server isn't even connected to the route right now, and all the computers are set for dynamic IP addresses.. I don't know what else to try? Any help?

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• Issues connecting to HP ProCurve switches

  - by BriGuy

  We are having a very strange issue trying to connect to our infrastructure switches via SSH. When you first try connecting to them, the switches will prompt for the password - and then just sit there after it is entered. If you create a second SSH session to the switch (while letting the first one remain open and just sitting there) it will let you log right in. The switches are doing the same thing with RADIUS and local authentication. The other strange part to all of this, is that about 10 switches started doing it all at the same time. As far as actual configuration of the switches, nothing has changed. Occasionally, one switch will start working like normal, but then stop again. These are all HP ProCurve managed switches, but all different models/firmware. Some switches that are not working are using the same firmware as others that are working. UPDATE: 20130312 I am also seeing this same behavior when trying to use telnet. The first telnet session just hangs there, and the second telnet session will let me log in. Rebooting the switches seems to get them working, but I still have 5 production switches that cannot easily be rebooted because of their production roles. Is anyone aware of anything else that can be switched on/off that may reset the logon for remote management or something like that?

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