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• ADSL2+ - High sync-rate, good line attenuation, but low noise margin and slow speeds

  - by Mark Pim

  I've been with my ISP (IdNet) for a few months and have been getting some good speeds, but in the last week the speed has dramatically decreased (from 15 Mbps+ to around 0.2 Mbps). This happens at all times of day, not just peak periods. Obviously I've done all I can to isolate problems my end - only one PC is connected to the router (via ethernet cable) and no other background programs are using the network etc. I've raised the issue with the ISP and they've suggested trying a new ADSL filter to see if that is casuing the problem, but I thought it would also be good to get the opinion of superuser on possible causes or other troubleshooting I can do. Here are the juicy stats :) My router (Netgear DGN1000) reports: Downstream Upstream Connection Speed 17602 kbps 1062 kbps Line Attenuation 17.9 db 8.6 db Noise Margin 6.0 db 6.1 db I used RouterStats and it seems to show those figures stay fairly consistent all the time I ran the BT speedtest and it reported: download speed of 164 kbps, out of a max achievable of 21000 kbps upload speed of 859 kbps, out of 1048 kbps DSL connection rate 17719 kbps down and 1048 kbps up IP Profile of 15000 kbps Is there any more troubleshooting I can do? Does this look like a problem with my equipment / wiring or with BT's line? Any advice would be great :)

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• Exchange 2010 UR3 - customizing OWA logon page

  - by STGdb

  I have an Exchange 2010 UR3 deployment that I need to customize the OWA logon page for. I've created a new LGNTOPL.GIF file to replace the existing one in the folder: “C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\14.3.158.1\themes\resources” When I bring up OWA, I still get the original “Outlook Web App” logo. I’ve searched and found a couple of other instances of LGNTOPL.GIF in the directories: “C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\14.3.123.3\themes\resources” “C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\14.3.146.0\themes\resources” “C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\Current\themes\resources” I’ve replaced the LGNTOPL.GIF file in each of the above directories but got the same results. I’ve tried clearing my browser cache and even using multiple browsers from multiple PC’s but the same results. I’ve even tried making my GIF file the same pixel size as the original LGNTOPL.GIF logo but still the same results. I’ve tried restarting IIS on the CAS server and restarting the server but same results. Has something changed with Exchange 2010 UR3 when trying to customize OWA? I don't see anything documented about any change to OWA customization. Thanks

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• How to safely use grub rescue> in Fedora 16? System does not boot anymore

  - by YumYumYum

  When i boot my PC, i get this in my Fedora 16 distro. I have tried as following but none allowing me to boot anymore. Any help please? I am blocked completely. Grub loading. Welcome to GRUB! error: file not found. Entering rescue mode... grub rescue> grub rescue> ls (hd0) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1) grub rescue> ls (hd0,gpt2)/ ./ ../ lost+found/ memtest86+-4.20 grub2/ System.map-3.1.0-0.rc3.git0.0.fc16.i686 config 3.1.0.0.rc3.git0.0.fc16.i686 grub/ vmlinuz-3.1.0.0.rc3.git0.0.fc16.i686 elf-memtest86+-4.20 initramfs-3.1.0.0.rc3.git0.0.fc16.i686.img initramfs-3.1.0.0.rc4.git0.0.fc16.i686.img System.mpa-3.1.0.0.rc3.git0.0.fc16.i686 config-3.1.0.0.rc3.git0.0.fc16.i686 vmlinuz-3.1.0.0.rc3.git0.0.fc16.i686 grub rescue> set prefix=(hd0,gpt2)/boot/grub grub rescue> set root=(hd0,gpt2) grub rescue>insmod normal error unknown filesystem. or sometimes "error: file not found." grub rescue>normal unknown command normal

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• USB Device Not Recognized (Mac)

  - by Nargis

  Fortunately, my Mac-pro also made one of my USB storage devices inoperable. My data loss in that USB device but such as another USB device and USB keyboard are unaffected. I have heard that my friend usually trigger this problem by having at least two devices plugged in - typically thumb drives/USB flash drives, and then once a second flash drive is plugged in that become unrecognized. I have only two USB ports and first I think port loose when I connect two USB devices. But later I found these hidden files (“.Spotlight-V100”, “.TemporaryItems”, “.Trashes”, and “._.Trashes”) are created by Mac OS. And before unrecognized that USB device I have deleted these files and my friend had also done the same action. Now I don’t want to test for next USB device to become unrecognized and I won’t deleted any hidden system file inside the flash drives. But I really want to know why these problems happened. Can I delete these hidden files when I only connect to virtual machine (Vista), because I used to delete all useless hidden files from USB flash drives? Any suggestions or thoughts to prevent this or alternative suggestions to fix the problem that take lossless would be much appreciated.

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• Router intermittently failing

  - by nomen

  My old Asus router died a few weeks ago, so I thought I'd set up my Debian box to deal with routing my home network. I have a few complications, but I adapted my configuration from a previously working configuration, and I don't see why I am having intermittent problems. But I am having them! Every so often, my SSH connections to the router (and to the Xen virtual machines hosted by the router) just drop. I am unable to use the router's dns server. I can't ping the router. Etc. All of these things work most of the time, but break down intermittently, for a few minutes at a time. (I can provide more details, but I'm not sure what will be helpful) /etc/network/interfaces: # The loopback network interface auto lo iface lo inet loopback # Gigabit ethernet, internal network auto eth0 allow-hotplug eth0 iface eth0 inet manual # USB ethernet, internet auto eth1 allow-hotplug eth1 iface eth1 inet dhcp # Xen Bridge auto xlan0 iface xlan0 inet static bridge_ports eth0 address 10.47.94.1 netmask 255.255.255.0 As I understand it, this is sufficient to create the network interfaces, and even do some switching between Xen hosts and my eth0 interface. I installed and configured Shorewall to manage routing between the bridge and my internet-facing interface: /etc/shorewall/zones fw firewall net ipv4 lan ipv4 /etc/shorewall/interfaces net eth1 detect dhcp,tcpflags,nosmurfs,routefilter,logmartians lan xlan0 detect dhcp,tcpflags,nosmurfs,routefilter,logmartians,routeback,bridge /etc/shorewall/policy net all DROP info fw net ACCEPT info all all REJECT info /etc/shorewall/rules DNS(ACCEPT) fw net DNS(ACCEPT) lan fw Ping(ACCEPT) lan fw ... and so on, these all work, when the router is accepting traffic at all. /etc/shorewall/masq eth1 10.47.94.0/24 Also, the router is currently "working", and I checked on a problematic client: arp infrastructure infrastructure.mydomain (10.47.94.1) at 0:23:54:bb:7d:ce on en0 ifscope [ethernet] I tried it when the router was down, and I (eventually) got the same response. It took about 30 seconds to return, though.

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• Mirror your display to another computer on your network

  - by klikkamongo

  I have a computer I am using for showing media, running windows 7 (XBMC). It is hooked up with a projector. I want other computers on my network to have the opportunity to mirror their display to this computer.(without the media computer having to accept it, it should be all controlled by the sending computer.(like sending a movie with Apple's Airplay)) One scenario: I am finding a webpage with a great article (or a Word document) on my computer that i want to show to the other people in the room, i press a button, then my screen is mirrored to the media pc. I can still scroll, write etc. so everybody can see it. When i am done showing the article, I can exit the display mirroring, and the media computer display goes back to normal. This should mirror the whole screen, not only the browser like plugins can do in chrome, or sending Youtube movies like plugins for Opera. Update I found a video example of the solution I am looking for, unfortunately it looks like it will be hard making a Chromecast reciever for windows. Using the "Cast entire screen (experimentally)" button on the Chromecast plugin in Chrome is doing the exact thing I want to do, see this video.

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• How can I get Windows to apply its settings?

  - by Jouke van der Maas

  I have a computer with a major problem; it gives a blue screen when the login screen loads. I've been using this guide to troubleshoot the issue, and now I've run into a problem. I have determined the issue is not bad memory or a bad hard drive. According to the guide, this means the problem is in the OS. I've tried to follow the steps, but Windows (Vista SP1) somehow doesn't remember any changes. On every reboot, the computer is in exactly the same state it was in before. Any changes to system settings or files won't be recorded. As this means I can't check what is causing the problem, I can't fix my PC. Is there a way to find out what's causing this? Is it just a mode Windows goes into to protect itself, or is it some other problem? Anything to help troubleshoot will be of great help here. PS. I'm kind of new to this site. If I messed up, please tell me in the comments.

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• proxy pass domain FROM default apache port 80 TO nginx on another port

  - by user10580

  Im still learning server things so hope the title is descriptive enough. Basically i have sub.domain.com that i want to run on nginx at port 8090. I want to leave apache alone and have it catch all default traffic at port 80. so i am trying something with a virtual name host to proxy pass to sub.domain.com:8090, nothing working yet and go no idea what the right syntax could be. any ideas? most of what i found was to pass TO apache FROM nginx, but i want to the do the opposite. LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_http_module modules/mod_proxy_http.so <VirtualHost sub.domain.com:80> ProxyPreserveHost On ProxyRequests Off ServerName sub.domain.com DocumentRoot /home/app/public ServerAlias sub.domain.com proxyPass / http://appname:8090/ (also tried localhost and sub.domain.com) ProxyPassReverse / http://appname:8090/ </VirtualHost> when i do this i get [warn] module proxy_module is already loaded, skippin [warn] module proxy_http_module is already loaded, skipping [error] (EAI 2)Name or service not known: Could not resolve host name sub.domain.com -- ignoring! and yes, the app is working (i have it running on port 80 with another subdomain) and it works at sub.domain.com:8090

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• Why are SIP calls via my server silent?

  - by Archcode

  I have FreeSWITCH SIP server up and running. It has public IP and sits behind 1-to-1 NAT (it's Amazon EC2 instance actually). I can connect to it, make a call to other endpoint (namely, my android device to my pc and vice versa) and signals are send with no problems (call, answer, hangup, etc). Unfortunately, and what drives me crazy, that's all: no audio gets through, no video either. Server does not throw errors, it reports many retransmission though, looks like this: switch_rtp.c:915 [ zrtp engine]: WARNING! HELLO Max retransmissions count reached (20 retries). ID=15 Codecs are set up correctly (same config worked locally on my LAN). NAT/firewall on client side may be a problem, signals do get through (perhaps due to fixed port, data streaming runs on random one, that is currently my best bet). STUN/TURN/ICE setting on client seem to have no effect. Endpoints sit behind symmetric NAT. On server there are no iptables rules, security group is set as suggested there: http://wiki.freeswitch.org/wiki/Firewall Help, please. How to make it work or at least diagnose what's wrong?

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• Setup shared internet connection on virtualbox with fixed IP

  - by Tom

  I am a web developer and until recently I have been using ubuntu as my OS. For many reasons, I have switched back to windows. I still want to keep my server on linux platform, so I setup my local server as a virtual machine. Everything works great, but i have a little struggle with the networking. Since I am working in different places and going around clients, I connect to all sorts of network with different settings. That means the possible IP range is very dynamic which causes issues when I work on my local server. At the moment I have a dynamic IP on my host and static IP on my guest. That way I can access the server from my host (by adding record to hosts file). I also have internet connection on the guest. But once i change networks, it does not work (assuming the network has different configuration). My question is, how to setup host-guest networking, so no matter what network I connect to, I can keep my static IP on guest, which is registered in hosts file on my host so I can access the webserver and also I will have internet connection on the guest? Hope it make sense. Thank you

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• Intel HD Graphics vs NVIDIA Quadro FX 380 PCI-E

  - by Michael

  I recently purchased an Acer Veriton which has an i5-650 processor, Windows 7 Pro (64 bit) and Intel HD Graphics listed as the video card. I also purchased a PNY nVIDIA Quadro FX 380 PCI-E card for improved picture and home video viewing and editing. I have already replaced the original 300 wattt power supply to a 430 watt Antec Truepower I had on hand and boosted the RAM to 8 gigs from the original 4. Question 1) Am I getting any improvement in visual quality or system speed with the Quadro or is it a waste of money and I should just save up to buy a bigger video card? This card was on sale for $115. If I am getting improvement then I need to ask another question. Question 2) Instructions for the Quadro installation are as follows... 1--Uninstall the existing VGA driver. -Remove the existing Display Driver via "Add or Remove Porgrams". -Shut down your computer. 2--Remove your Existing Graphics Board (or Disable Integrated 3D Graphics Controller). skipping instructions on how to remove existing graphics board -Systems with integrated (also know as on-board) 3D graphics may require you to disable the integrated 3D graphics system. Consult the owners or vendor manual that came with your PC on how to properly do this. So is the Intel HD Graphics considered a 3D graphics controller? If so should I just contact Acer or can anyone give me instructions? Thanks in advance for any help.

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• Dual hard drive Windows 7 system, modified the registry to get programs to install on second drive, now IE doesn't work

  - by paul

  I have a dual hard drive Windows 7 system, Windows is installed on an SSD (C:) and I modified the registry to try to force programs to install on second HDD drive (another letter). The registry edits are pretty simple, just a few keys in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion to change the drive letter. For the most part the system is very fast and works great, but IE doesn't work anymore. With IE10, it opens for a flash with a white window then closes. I tried installed IE11 which opens a white window for a few seconds, doesn't respond, then crashes. I've tried all the solutions I could find. This includes resetting the IE settings, "uninstalling" and re-installing IE, which is just turning it on and off in "Turn Windows Features on or off", copying the Program Files\Internet Explorer files onto both/either drives, changing the registry keys back to use C:, lots of rebooting, and safe mode. Nothing has worked. I don't see errors in the event viewer, but I might not know what to look for. Any ideas on how to get IE running? I don't need IE for daily browsing, I just need it for cross-browser testing on sites I build and on the rare occasion a page only works in IE. I don't really want to use a virtual machine, but would be ok with something standalone like tredosoft's, but I'm not aware of something like that for current versions of IE.

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• Any ideas why Ettercap filters aren't seeing packet data?

  - by Bryan

  I'm using an Ettercap filter to detect a query response coming back from a particular service on a remote machine. When I see a response from the service, I'm searching through the data in the packet to see if an offset is a specific value, and if so I'm changing the value at another offset. Trouble is, when I try this on a new virtual machine I built my Ettercap filter's no longer getting any data in the DATA.data variable available to it. if(ip.proto == TCP && tcp.src == 17867) { msg("Response seen!\n"); if(DATA.data + 2 == "\0x01") { msg("Flag detected!\n"); DATA.data + 5 = 0x09; } } The filter's getting applied to the traffic because "Response seen!" messages get printed out by Ettercap. However, "Flag detected!" messages do not. I think DATA.data is indeed empty because if I change my second "if" statement to check for DATA.data == "" then the "Flag detected!" message gets printed. Any ideas why this may be happening?! Also, if this is the wrong site to be asking questions like this, please let me know. I wasn't sure if it fit better here or somewhere like superuser or serverfault. By the way, this is a cross-post from StackOverflow... I should have posted on this forum instead I think. :)

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• Limit access on Apache 2.4 to ldap group

  - by jakobbg

  I've upgraded from Ubuntu 12.04 LTS to 14.04 LTS, and suddenly, my Apache 2.4 (previous: Apache 2.2) now lets everybody in to my virtual host, which is unfortunate :-). What am I doing wrong? Anything with the Order/Allow lines? Any help is greatly appreciated! Here's my current config; <VirtualHost *:443> DavLockDB /etc/apache2/var/DavLock ServerAdmin [email protected] ServerName foo.mydomain.com DocumentRoot /srv/www/foo Include ssl-vhosts.conf <Directory /srv/www/foo> Order allow,deny Allow from all Dav On Options FollowSymLinks Indexes AllowOverride None AuthBasicProvider ldap AuthType Basic AuthName "Domain foo" AuthLDAPURL "ldap://localhost:389/dc=mydomain,dc=com?uid" NONE AuthLDAPBindDN "cn=searchUser, dc=mydomain, dc=com" AuthLDAPBindPassword "ThisIsThePwd" require ldap-group cn=users,dc=mydomain,dc=com <FilesMatch '^\.[Dd][Ss]_[Ss]'> Order allow,deny Deny from all </FilesMatch> <FilesMatch '\.[Dd][Bb]'> Order allow,deny Deny from all </FilesMatch> </Directory> ErrorLog /var/log/apache2/error-foo.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access-foo.log combined </VirtualHost>

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• Apache2 doesn't serve PHP-scripts correctly [closed]

  - by cmbrnt

  I've run into a problem with my Apache 2.2.16 configuration, running on Debian Squeeze. The problem is that it stopped serving PHP5-scripts completely. When I try to access the sites with Google Chrome, it instead downloads a file called "download", which contains the contents of the script. This is of course not a good thing. It does serve common html-files perfectly... I've been at this for quite a while now, and after all the googling and troubleshooting, I thought it would be a good time to ask you guys. Here's what I've got: The php5 and libapache2-mod-php5 packages are installed /etc/apache2/mods-available contains both php5.load and php5.conf, and these are symlinked from the mods-enabled directory The /etc/php5/ directory is left untouched since the installation. Here's the contents of /etc/apache2/mods-available/php.load: LoadModule php5_module /usr/lib/apache2/modules/libphp5.so And /etc/apache2/mods-available/php.conf: <IfModule mod_php5.c> <FilesMatch "\.ph(p3?|tml)$"> SetHandler application/x-httpd-php </FilesMatch> <FilesMatch "\.phps$"> SetHandler application/x-httpd-php-source </FilesMatch> <IfModule mod_userdir.c> <Directory /home/*/public_html> php_admin_value engine Off </Directory> </IfModule> </IfModule> What am I missing? This is a server with modified virtual hosts and the like, so I might have changed some settings which causes this problem, but simply purging and reinstalling is not an option so far, since the configuration is quite extensive. Any help would be great. Thanks.

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• How to Monitor Network in Medium-Sized Company?

  - by Kyle Lowry

  I work at a medium sized company (100+ employees). An issue that has been cropping up is network performance, internet access in particular. We have about 70 or more computers, a mix of Mac OS X and Windows XP & 7 machines. We have several servers (Exchange server, PC file servers, MS SQL, Blackberry, FTP, Mac server, etc). There are four main switches, a SonicWall firewall, and probably a couple routers in the server room with a dozen or so more scattered around the building. The network structure has grown organically over a number of years; and, as far as I know, there really isn't a monitoring solution in place. When we experience network issues (slow connections, dropped packets, and so on), our general solution is to power cycle some hardware or go around to each employee and ask them if they are uploading/downloading any large files. This is really inefficient and time consuming, and it does not allow us to monitor the network, tackling potential problems proactively. I would like to find a solution that would allow me to monitor network usage company-wide in real time, with detail going down to the individual computer, ideally. Given the hodgepodge of equipment and operating systems, what would be the best way to set up some kind of monitoring solution? Hardware, software, restructuring our network architecture?

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• How can I make my Super keys (Windows Key) behave more like Ctrl/Alt/Shift in Linux

  - by deltaray

  After using the Ctrl + "arrow keys" for 13 years to switch virtual desktops in X windows, I've been convinced recently to change to using the Super keys instead (the windows key and the context menu key, which I've remapped). This all works fine for the most part. However, something is still picking up the key events that these keys are sending as if they are a normal alphanumeric like key. For example, I first noticed this in Google Docs spreadsheet that if I press the windows key alone over top of a cell, that it starts editing that cell. It doesn't insert anything, it just sends a key event that Firefox sees and starts editing the cell. This caused problems on a collaborative document I was working on as the way Google docs works, it led to me accidentally erasing the data in a few fields before I realised what was going on. I like using the super keys, but I want them to behave more like a Ctrl or Alt key does in that its a modifier key and doesn't send anything until a second key is pressed. My setup is the following: Ubuntu 10.10 XFCE 4 Microsoft Natural Ergo 4000 keyboard (with the logo scratched out) The following is my .Xmodmap file: remove Lock = Caps_Lock keycode 66 = Escape ! The below maps my other windows context menu key. keycode 135 = Super_R Edit: As requested, here is the relevant output from xev for a keypress and keyrelease of my Super_L (left windows key) KeyPress event, serial 34, synthetic NO, window 0x8200001, root 0x15d, subw 0x0, time 2428849342, (177,174), root:(182,228), state 0x10, keycode 133 (keysym 0xffeb, Super_L), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 34, synthetic NO, window 0x8200001, root 0x15d, subw 0x0, time 2428849430, (177,174), root:(182,228), state 0x50, keycode 133 (keysym 0xffeb, Super_L), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False

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• Explorer constantly hanging

  - by user978122

  So I'm running Windows 7 Ultimate (x64) an AMD 8150 on an Asus Crosshair V motherboard with all the latest and greatest patches, and I am experiencing frequent Explorer freezes. I've included the information I've grepped from the Event Viewer below: The program Explorer.EXE version 6.1.7601.17567 stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Action Center control panel. Process ID: 13a4 Start Time: 01cdb2968999c6fd Termination Time: 0 Application Path: C:\Windows\Explorer.EXE Report Id: c000ba44-1e8b-11e2-9ae7-000272ddf2b0 - System - Provider [ Name] Application Hang - EventID 1002 [ Qualifiers] 0 Level 2 Task 101 Keywords 0x80000000000000 - TimeCreated [ SystemTime] 2012-10-25T10:08:44.000000000Z EventRecordID 14626 Channel Application Computer RyanMain-PC Security - EventData Explorer.EXE 6.1.7601.17567 13a4 01cdb2968999c6fd 0 C:\Windows\Explorer.EXE c000ba44-1e8b-11e2-9ae7-000272ddf2b0 430072006F00730073002D0074006800720065006100640000000000 -------------------------------------------------------------------------------- Binary data: In Words 0000: 00720043 0073006F 002D0073 00680074 0008: 00650072 00640061 00000000 In Bytes 0000: 43 00 72 00 6F 00 73 00 C.r.o.s. 0008: 73 00 2D 00 74 00 68 00 s.-.t.h. 0010: 72 00 65 00 61 00 64 00 r.e.a.d. 0018: 00 00 00 00 .... Any idea what "Cross-thread" here means?

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• Howto align partitions in Linux + NetApp

  - by santisaez

  NetApp support has suggested us aligning partitions to improve performance, in short: starting sector must be divisible by 8. How can I move the start point in a misaligned partition -in production, with ext3- under Linux? A screenshot with a misaligned (start=63s) and aligned (start=64s) partition is available at: http://filesocial.com/lkwvvn2 (If anyone is interested in this topic, NetApp has a good document explaining performance issues in misaligned partitions, search for "tr-3747": Best Practices for File System Alignment in Virtual Environments.) I have tried using parted "resize + move" commands, but when moving start point a get this error: (parted) resize Partition number? 1 Start? [64s]? End? [419425019s]? 419425018 (parted) move Partition number? 1 Start? 65 End? [419425019s]? 419425019 Error: Can't move a partition onto itself. Try using resize, perhaps? Using fdisk 'b' command in expert mode ('move beginning of data in a partition') works, but it doesn't move the file system.. thanks!!

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• Pull network or power? (for contianing a rooted server)

  - by Aleksandr Levchuk

  When a server gets rooted (e.g. a situation like this), one of the first things that you may decide to do is containment. Some security specialists advise not to enter remediation immediately and to keep the server online until forensics are completed. Those advises are usually for APT. It's different if you have occasional Script kiddie breaches. However, you may decide to remediate (fix things) early and one of the steps in remediation is containment of the server. Quoting from Robert Moir's Answer - "disconnect the victim from its muggers". A server can be contained by pulling the network cable or the power cable. Which method is better? Taking into consideration the need for: Protecting victims from further damage Executing successful forensics (Possibly) Protecting valuable data on the server Edit: 5 assumptions Assuming: You detected early: 24 hours. You want to recover early: 3 days of 1 systems admin on the job (forensics and recovery). The server is not a Virtual Machine or a Container able to take a snapshot capturing the contents of the servers memory. You decide not to attempt prosecuting. You suspect that the attacker may be using some form of software (possibly sophisticated) and this software is still running on the server.

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• Understanding Unix Permissions (w/ ACL)

  - by Dr. DOT

  I am trying to set permissions on my server properly. Currently I have a number of directories and files chmod'd at 0777 -- but I am not comfortable with it being this way. So at the advice of a serverfault specialist, I had my hosting provider install ACL on my shared virtual server. When I FTP to the server as my FTP user account "abc", I can do everything I need to do (and rightfully so) because all my dirs and files are owned by "abc", the group is "abc", and the 1st octet is set to 7 (rwx). That much I get. But here's where it gets dark gray for me. PHP is set to user "nobody". so when someone browses on of my web pages that either ends in .php or has some embedded PHP, I assume the last octet controls the access. Because all my dirs and files are owned by "abc" and assigned to group "abc", if the last octet was a 4 (r--) then the server would let the browser read the file. If it were a 6 (rw-) then the server would let the browser also write to the file or directory, correct? what if the web document does not end in .php or does not have any PHP embedded? What is the user then? how can I use ACL to not set the permission to 6 (rw-) or even 7 (rwx)? [not sure what execute does or means] Just looking for some sort of policy settings to best lock down my dirs and files while allowing my PHP scripts to do uploads and write to files (so my users don't call me to tell me "permission denied". Ok, thanks to anyone out there willing to lend me a hand. It is greatly appreciated.

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• INACCESSIBLE_BOOT_DEVICE after installing Linux on same drive

  - by kdgregory

  History: My PC was configured with two drives: an 80G on IDE 0 Primary that was running Win2K, and a 320G on IDE 0 Secondary that was running Linux (Ubuntu). I decided to pull the 80Gb drive out of the system, so dd'd the entire 80 G drive (/dev/sda) onto the 320 (/dev/sdb) -- this included the MBR and partition table. Then I pulled the drive, plugged the 320 into IDE 0 Primary, and rebooted. The Windows partition worked at this point. Then I installed Ubuntu into the remaining space on the 320. It works. However, when I try to boot into Windows, I get a BSOD with the following message: *** STOP: 0x0000007B (0x89055030,0xC000014F,0x00000000,0x00000000) INACCESSILE_BOOT_DEVICE Before the BSOD I see the Win2K splash screen, and it claims to be "starting windows" for a couple of seconds -- so it appears that the first stage boot loader is working as expected. Ditto when I try booting in Safe Mode. After reading the Microsoft KB article, I booted into the recovery console and tried running chkdsk /r. It refused to run, claiming that the drive was corrupted (sorry, didn't write down the exact error message). However, I can mount the drive from Linux, and access all files. And for what it's worth, I can scan the drive using the Linux "Disk Utility" (this is Ubuntu, the menus don't show real program names), it claims the drive to be clean. The KB article mentioned that boot.ini could be the problem, so here it is: timeout=10 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows 2000 Professional" /fastdetect Any pointers on what to do next?

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• Apache forwarding to tomcat shows a blank page

  - by MNS

  I have an application running on tomcat at http ://www.example.com:9090/mycontext. The host name in server.xml points to www .example.com. I do not have localhost anymore. I am using apache to forward requests to tomcat using mod_proxy. Things work fine as long as the ProxyPath is /mycontext. The server name setup in virtual host is www .abc.com and http ://www.abc.com/mycontext works fine. However I would like to ignore the context path and simply use http://www.abc.com/ to forward requests to http://www.example.com:9090/mycontext. When I do this, apache shows me a blank page. What am I missing here? I have not changed anything in server.xml except the default host to www .example.com. <VirtualHost *:80> ServerName www.abc.com ProxyRequests Off ProxyPreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / http://www.example.com:9090/mycontext ProxyPassReverse / http://www.example.com:9090/mycontext </VirtualHost> Thanks

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• Advice for UPC/Surge Protector in home office

  - by user37755

  I'm just starting out as an independant developer, mostly Unix stuff with some Windows thrown in occasionally. I've been running two machines, a linux and a windows dev machine. Long story short, we had a bad storm come through last week and I unplugged one machine, forgot to unplug the other and the p/s and mobo ended up dead. Luckily I backup to an external service religiously (rsync.net for anyone interested), so there was no loss in data, but it did show me a glaring hole in my current setup, namely, lack of UPC and Surge Protection (this has honestly never been an issue before). Can anyone recommend a UPC/Surge Protector for a home office? It only needs to support a single machine (I opted to use vmware instead of rebuilding that machine), but it's a quad core Phenom 2 with a 1k watt p/s. This is outside my experience so I thought I'd get some input from others. I'm looking for something that's reasonably priced and does the job reasonably well. I don't need absolute 100% uptime, just something to protect my PC better than it is now.

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• Is this a legitimate registry key? (windows 7)

  - by Keyes

  In hkey_local_machine/software/classes I found some registry keys named msime.taiwan, msime.japan and a couple others with similar names, except with a number at the end of, so there was 4 keys altogether. From what I know itmcoulc be associated with a thing in windows that lets you write japanese characters or whatever. I also found a macaffee page, , which seemed dated but it said the key is created by a virus named w32 virut. Just wondering is this a legit key? I found it on another pc and both pcs show when exported to a .txt show it was last written to in 2009. Here is the reg query for the 4 keys. (added lines to differentiate them.) HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Japan (Default) REG_SZ Microsoft IME (Japanese) HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Japan\CLSID (Default) REG_SZ {6A91029E-AA49-471B-AEE7-7D332785660D} HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Japan\CurVer (Default) REG_SZ MSIME.Japan.11 HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Japan.11 (Default) REG_SZ Microsoft IME (Japanese) HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Japan.11\CLSID (Default) REG_SZ {6A91029E-AA49-471B-AEE7-7D332785660D} HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Taiwan\CLSID (Default) REG_SZ {F407D01A-0BCB-4591-9BD6-EA4A71DF0799} HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Taiwan\CurVer (Default) REG_SZ MSIME.Taiwan.8 HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Taiwan.8 (Default) REG_SZ IMTCCORE HKEY_LOCAL_MACHINE\Software\Classes\MSIME.Taiwan.8\CLSID (Default) REG_SZ {F407D01A-0BCB-4591-9BD6-EA4A71DF0799}

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