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• Sharing between Vista and Windows 7

  - by Metro Smurf

  Vista Ultimate 32 bit Windows 7 Ultimate 64 bit I've read through similar questions about sharing between Win7 and Vista, but none of them have resolved my issue of not being able to share between Win7 and Vista: Connecting to a Vista shared folder from Windows 7 Networking Windows 7 and Vista Enable File sharing in Windows Vista Previously I had previously had my Vista and XP system sharing back and forth without any problems. I was able to access the shares without entering a user name / password in the NT challenge prompt (note: account names and passwords were different on the Vista and XP systems). Currently I replaced my XP system with a Win7 system. Now, when I attempt to access shares to/from Vista / Win7, I am continually prompted with an NT challenge to enter my credentials. Things I've Verified/Tried Both systems are on the same workgroup. Win 7 is using the Home network. Vista is using the Private network. In other words, neither system is using a Public network profile. Enabled file sharing with and without password protection on both Vista and Win7 Tried HomeGroup Connections (win7) with Windows to manage connections and Use user accounts to connect. Reviewed too many online articles to count to trouble shoot. Set the shares to have full control by everyone. Set up the shares directly on the directory and through the share manager. My Question How can I enable file sharing between Vista and Win7 without being prompted with a username/password challenge, ever?

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• Stepmania + KDE4 = sound problem

  - by picca

  I cannot manage to get KDE4 + stepmania working. If I run StepMania I always get: StepMania 3.9 Log starting 2010-12-24 14:52:48 Loading window: gtk OS: Linux ver 020636 Crash backtrace component: x86 custom backtrace Crash lookup component: dladdr Crash demangle component: cxa_demangle Runtime library: glibc 2.11.2 Threads library: NPTL 2.11.2 TLS is available ALSA: Advanced Linux Sound Architecture Driver Version 1.0.23. ALSA Driver: 0: HDA ATI SB [SB], device 0: STAC92xx Analog [STAC92xx Analog], 0/1 subdevices avail ALSA Driver: 0: HDA ATI SB [SB], device 1: STAC92xx Digital [STAC92xx Digital], 1/1 subdevices avail Couldn't load driver ALSA: dsnd_pcm_open(hw:0): Device or resource busy Mixing 0.000000 ahead in 0 Mix() calls Couldn't load driver ALSA-sw: dsnd_pcm_open(hw:0): Device or resource busy Mixing 0.000000 ahead in 0 Mix() calls Couldn't load driver OSS: RageSound_OSS: Couldn't open /dev/dsp: Device or resource busy Language: english Theme: default Error: Couldn't find a sound driver that works I found that in StepMania/Data/StepMania.ini I should add following line: SoundDevice=default That enables me to run StepMania, but I don't have any sound. Which is pretty bad for an application like this one. I'm quite sure that the problem is in phonon that is blocking the audio device to which StepMania needs to access directly. I think that I can fix this if I run other (lighter) window-manager than KDE4. But that is not a solution occasional linux user. Do I have any chance to get StepMania under KDE4 completely working?

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• Is there a standard method for assigning nameservers to servers in a Windows domain?

  - by HopelessN00b

  As the title asks, I'm wondering if there's any standard or "best practice" for how to actually assign nameservers (DNS) and manage the nameserver configuration for client servers on a Windows domain. I'm talking about the setting circled in the below image, in case the language of the question is not clear enough: This is for a large, multi-site environment, where ideally/hopefully all servers point at their site's Domain Controller as the primary DNS server, and a DNS server at a different site as the secondary DNS server. For simplicity's sake, we can say that the secondary server would be the Domain Controller at the home site for everyone, and there are no tertiary DNS servers (even though that's not actually the case). Try as I might, I can't seem to find a GPO setting for this (at least on FL 2003 R2, the Computer Configuration - Administrative Templates - Network - DNS Client - DNS Servers GPO is Supported on: Windows XP Professional only), and I find it rather hard to believe that the "best"/"standard" solution would therefore be either scripting up something to apply the DNS settings per site, or using a DHCP server to push those configurations out to the other servers via the DHCP Scope Options. So, is there a standard way of managing this configuration? (That's hopefully not "a script" or "DHCP Scope Option.)

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• How can I setup BluePill to Monitor a Rails App Running via Passenger (mod_rails)

  - by Jim Jeffers

  I recently launched a site running phusion passenger. Unfortunately, the site went down due to a frozen thread. I was able to save the server by doing kill -9 to the specific PID. Still though, I thought passenger was able to manage this automatically. I have a server with 1GB of memory running one rails app with passenger allotted up to 7 instances. However, when I came to discover the site went down I found that passenger had spawned 6 instances with one of them using up over 800mb of memory causing the server to swap. As a result I am hoping to setup something like bluepill on the server but I'm slightly confused as to how you go about doing it. Mainly because bluepill expects to start/stop the processes it's monitoring. However, in our case, passenger already restarts processes for us so we only need to monitor the pids of passengers instances and kill them once they've gotten too large. Has anyone here setup BluePill to monitor a rails app running under phusion's passenger? Any insight would be useful.

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• Is It Possible To Self-Teach PHP, Wordpress, CentOS (Linux), Apache, Nginx etc?

  - by Aahan

  consider me a total noob, who uses a Windows PC and has never touched Linux. But I want to administer, manage and take responsibility of my server, at least at some point, if not now. But since I am a full-time blogger I am unable to find time to study at an institute. So, here is my question — - Is It Possible To Self-Teach HTML, CSS, PHP, JavaScript, Wordpress, CentOS (or for that matter any Linux distro), Apache, Nginx, and Varnish? Yes, beginning with HTML, absolutely all of them. I might seem overly ambitious and foolish, but I just want to do it. Aren't there any self-taught server admins? (1) Please help me out with the names of good books, links and whatever you can. (2) How long would it take me to get there (approximately)? 3 years? 5 years? (I have good touch with HTML & Wordpress.) This is a great community, I hope at least some of you will shoot some suggestions at me.

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• Display issue with fresh install of windows server 2012

  - by Tony

  I installed windows server 2012 last night on my home "server". I use server loosely. From the get go I had display and graphic issues. The image was fuzzy and jumbled up during the install. This continued once booted into the install. I did installed Server 2012 twice now as the first time, I only installed "core". I know this is not a busted graphics card because it worked fine in Win7, during boot, and fine in "core" mode. Once booted into "GUI" install of Server 2012, the image was messed up again. To make things even more weird, the windows "loading" screen looks fine. Once the login screen appears the image is fuzzy and jumbled. My guess was that it was a driver issue. I did try to install the win8 x64 drivers from nvidia. This caused the system to become unbootable and I had to restore to a previous working point and uninstall the driver. I did try two different monitors and cables. Also both ports on the back of the video card. I did manage to get RDP running and that works fine. I rarely work directly on this machine but it would be nice to have the option back. Geforce 210, AMD 4600+, 4 gigs of ram.

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• Network structure --> Server 2k8r2 <--> Livebox <--> Router <--> Other PCs

  - by Yusuf

  I have a Livebox connection to the Internet and I have set up my network as follows: - Livebox <--> Win2k8R2 Server - Livebox <--> Netgear N150 Router - Router <--> Other PCs Therefore, in my LAN, - the Livebox has IP address 192.168.1.1, - the Router 192.168.1.12 (when accessed from the Livebox or the server), - the Router 10.0.0.1 (when accessed from the PCs connected to the Router), - the server 192.168.1.2, - the PCs 10.0.0.x I was using a previous configuration, which was as follows: - Livebox <--> Netgear N150 Router - Router <--> Win2k8R2 Server - Router <--> Other PCs Everything was simple, and I just had to forward all ports for incoming connection on the Livebox to the Router, and then forward the specific ports to the Server as needed (it must be however noted that any server I use is found on the Win2k8R2 server itself). In this previous configuration, the IP addresses were as follows: - Livebox 192.168.1.1 - Router 192.168.1.12 (when seen from Livebox) - Router 10.0.0.1 (when seen from server & PCs connected to it) - Server 10.0.0.2 - PCs 10.0.0.x So now of course, my port-forwarding does not work anymore since the server is not connected (directly) to the Router. What I would like to know is how do I configure the Livebox and Router to still have the features like before? From what I understand of networks (which is very limited, btw), I see these options: Make the router assign IPs like 192.168.1.x (but then I want the forwarding to be done from the router itself, is it possible?) The forwarding on the router to the server uses IP address 10.0.0.2. I could change it to 192.168.1.2 (Is that even possible, does it work?) Forward all ports from the Livebox itself to the server, and then manage them there (Is software-based port-forwarding as secure as hardware-based?)

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• Proper configuration for Windows SMTP Virtual Server to only send email from localhost, and tracking down source of spam emails

  - by ilasno

  We manage a server that is hosted on Amazon EC2, which has web applications that need to be able to send outgoing email. Recently we received a notice from Amazon about possible email abuse on that server, so i've been looking into it. It's Windows Server Datacenter (2003, i guess), and uses SMTP Virtual Server (you know, the one that requires IIS 6 for admin). The settings on the Access tab are as follows: - Authentication: Anonymous - Connection: Only from 3 ip addresses (127.0.0.1 and 2 others that refer to that server) - Relay: Only from 3 ip addresses (127.0.0.1 and 2 others that refer to that server) In the SMTP logs there are many entries like the following: 2012-02-08 23:43:56 64.76.125.151 OutboundConnectionCommand SMTPSVC1 FROM: 0 0 4 0 26364 SMTP - - - - 2012-02-08 23:43:56 64.76.125.151 OutboundConnectionResponse SMTPSVC1 250+ok 0 0 6 0 26536 SMTP - - - - 2012-02-08 23:43:56 64.76.125.151 OutboundConnectionCommand SMTPSVC1 TO: 0 0 4 0 26536 SMTP - - - - 2012-02-08 23:43:56 64.76.125.151 OutboundConnectionResponse SMTPSVC1 250+ok 0 0 6 0 26707 SMTP - - - - ([email protected] is sending quite a lot of emails :-/) Can anyone confirm if the SMTP server settings seem correct? I'm also wondering if a web application on the machine could be exposing a contact form or something that would allow this sort of abuse, looking into that (and how to look into that) further.

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• How to autorun wpa_supplicant on Debian startup

  - by The Electric Muffin

  I'd like to run wpa_supplicant -D wext -i wlan0 -c /etc/wpa_supplicant.conf on Debian startup (runlevels 2-5). I found some vague instructions from a related question that said to put a script in /etc/init.d/ and then symlink to it from the apropriate /etc/rcRUNLEVEL.d/ directories. However, I noticed that there are already some files named "wpasupplicant" that probably run at startup: /etc/network/if-down.d/wpasupplicant /etc/network/if-post-down.d/wpasupplicant /etc/network/if-pre-up.d/wpasupplicant /etc/network/if-up.d/wpasupplicant They all are symlinks to the same script, /etc/wpa_supplicant/ifupdown.sh. It has a comment at the beginning saying it "[...] allows ifup(8), and ifdown(8) to manage wpa_supplicant(8) and wpa_cli(8) processes running in daemon mode." However, the closest it gets to calling wpa_supplicant itself is (in functions.sh): WPA_SUP_BIN="/sbin/wpa_supplicant" [snip] start-stop-daemon --start --oknodo $DAEMON_VERBOSITY \ --name $WPA_SUP_PNAME --startas $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE \ -- $WPA_SUP_OPTIONS $WPA_SUP_CONF [snip] start-stop-daemon --stop --oknodo $DAEMON_VERBOSITY \ --exec $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE Does that mean it's safe to make an init.d script for wpa_supplicant, and if so what would it look like? General info: Debian Squeeze (5.0) official wpasupplicant package (v0.6.10-2.1) The full contents of my system's functions.sh and ifupdown.sh are here (dependent, of course, on my system's uptime—it's a five-year-old laptop that greatly enjoys overheating): functions.sh ifupdown.sh

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• Change Outlook's default calendar to iCloud (meeting requests end up in wrong calendar)

  - by flohei

  Following scenario: I've got a main computer (Windows 7, Office 2010) which is being used to manage contacts, meetings, etc. using Outlook. Now I've added an iPad and an iPhone to sync using iCloud. I moved all appointments and contacts from the old PST file to the iCloud file. All the data syncs nicely. The email account I'm using in Outlook is an IMAP account which opens up another data file which brings us to a total of three data files in Outlook's side bar. The problem: When one of our clients sends us meeting requests via email they show up in the IMAP's inbox. When we open them up they automatically get added to Outlook's default calendar (the one in the original PST). Is there any chance not to add them to that calendar but the iCloud one? Basically we could completely get rid of the original PST since we don't use it at all anymore but the settings do not allow me to remove this PST file and set the iCloud one as default. Thanks!

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• Subdomain is preventing my search results from rising as expected in page rank

  - by culov

  My problem is that I have a site which has requires a dedicated page for every city I choose to support. Early on, I decided to use subdomains rather than a directly after my domain (ie i used la.truxmap.com rather than truxmap.com/la). I realize now that this was a major mistake because Google seems to treat la.truxmap.com as a completely different site as ny.truxmap.com. So for instance, if i search "la food truck map" my site will be near the top, however, if i search "nyc food truck map" im no where in sight because ny.truxmap.com wouldnt be very high in the page rank by itself, and it doesnt have the boost that it ought to be getting from the better known la.truxmap.com So a mistake I made a year ago is now haunting my page rank. I'd like to know what the most painless way of resolving my dilemma might be. I have received so much press at la.truxmap.com that I can't just kill the site, but could I re-direct all requests at la.truxmap.com to truxmap.com/la and do the same for all cities supported without trashing my current, satisfactory page rank results I'm getting from la.truxmap.com ?? EDIT I left out some critical information. I am using Google Apps to manage my domain (that is, to add the subdomains) and Google App Engine to host my site. Thus, Google Apps provides a simple mechanism to mask truxmap.appspot.com (the app engine domain) as la.truxmap.com, but I don't see how I can mask it as truxmap.com/la. If I can get this done, then I can just 301 redirect la.truxmap.com to truxmap.com/la as suggested below. Thanks so much!

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• Weird glitches on Intel iGPU

  - by FrederikVds

  I have a weird problem that I can't manage to describe in one word, so I'm having trouble searching for a solution. My monitors sometimes go black for a tenth of a second. Other times, they show the image shifted a few centimeters to the left or to the right. This happens on both of my monitors, but not necessarily at the same time. I would say it happens about once a minute, unless under heavy load, in which case it can happen every second or so. Interestingly, heavy CPU/memory usage can also cause this, not just heavy GPU usage. This only happens when they are both at 1920x1080, not when one of them, or both, are at a lower resolution. It also happens when they are in mirrored mode instead of extended desktop mode. My GPU is obviously not at full clock speed most of the time: this happens at 350 MHz as well as at 1200 MHz. So it doesn't seem like a matter of too little performance. I'm not seeing any traditional artefacts, even when I use MSI Kombustor, only this kind of full-screen glitches. CPU stressing software isn't reporting any issues either. I'm thinking maybe the connection between my CPU and my PCH isn't fast enough, but I can't find anyone with the same problem to confirm that. I'd rather not invest in a discrete GPU without being certain it will fix something. Does anyone know how to search for this, or even better, does anyone have a solution? My full specs are below. Thanks in advance! Specs: ASUS P8Z77-M Intel Core i5-3570K (with Intel HD 4000 Graphics) 2x4 GB AMD Performance Edition memory Corsair Force 3 Series Rev. B 120GB SSD Maxtor 200GB HD Lite-On DVD-RW Antec 350 Watt PSU 64-bit Windows 7 Professional 2x Iiyama ProLite E2208HDS display

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• My SSD stopped working as it ends up in blue death right after windows 7 launches, how can I reset it for new windows install?

  - by HattoriHanzo

  As I mentioned in the title my SSD suddenly started to fail as after launching Windows 7 it goes straight to completely idle and after a few minutes it goes to blue death and restarts. I have an another HD with a windows xp on it and it works fine and I can also see the SSD and can access everything on it. Windows 7 on the SSD does work in safe mode though yet I didn't manage to find out what causes the problem. Since I can sill access the files and save them to another HD I'm looking for the best way to wipe and reinstall Windows 7. I have yet failed to find an easy to follow (or even understand) guide, different sources on the internet recommend different ways of doing this. And some guides are just simply full of terms I have no clue about. It's an OCZ Vertex 2 120GB. I"d very much appreciate if someone could give me an advice on what I should do, preferably in a way so I could regain the best possible performance as well. it doesn't matter if I don't understand the science behind it as long as I can follow the steps. Thanks!

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• Trouble with Russian pc's on my wifi

  - by hogni89

  I have created a WiFi hotspot for the local community. The problem is, some Russian PC's (Windows XP, Windows Vista and Windows 7) can't get internet connection (We have a lot of bypassing russian fishing vessels / cargo ships). The pc's obtain a valid IP address, and some of them can even manage to send some few packages - But none of them are usable on the network. They all say "Limited internet access" or "???????????? ?????? ? ????????". The thing these PC's have in common is, that they all run a Russian installation of Windows. No one else has problems with the WiFi hotspot - Danish and English Windows, Linux and OS X all work like a charm. Can it be, that there is a difference between the danish / english windows installation, compared to the Russian installation? EDIT START They can't ping the router (One PC got one response - ONCE), they can't access any sites and Windows newer asks "Is this network public, home or work?". EDIT END PS: The hotspot is a airMAX rocket M from Ubiquiti Networks, Inc (www.ubnt.com)

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• ldap-authentication without sambaSamAccount on linux smb/cifs server (e.g. samba)

  - by umlaeute

  i'm currently running samba-3.5.6 on a debian/wheezy host to act as the fileserver for our department's w32-clients. authentication is done via OpenLDAP, where each user-dn has an objectclass:sambaSamAccount that holds the smb-credentials and an objectclass:shadowAccount/posixAccount for "ordinary" authentication (e.g. pam, apache,...) now we would like to dump our department's user-db, and instead use authenticate against the user-db of our upstream-organisation. these user-accounts are managed in a novell-edirectory, which i can already use to authenticate using pam (e.g. for ssh-logins; on another host). our upstream organisation provides smb/cifs based access (via some novell service) to some directories, which i can access from my linux client via smbclient. what i currently don't manage to do is to use the upstream-ldap (the eDirectory) to authenticate our institution's samba: i configured my samba-server to auth against the upstream ldap server: passdb backend = ldapsam:ldaps://ldap.example.com but when i try to authenticate a user, i get: $ smbclient -U USER \\\\SMBSERVER\\test Enter USER's password: Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.6.6] tree connect failed: NT_STATUS_ACCESS_DENIED the logfiles show: [2012/10/02 09:53:47.692987, 0] passdb/secrets.c:350(fetch_ldap_pw) fetch_ldap_pw: neither ldap secret retrieved! [2012/10/02 09:53:47.693131, 0] lib/smbldap.c:1180(smbldap_connect_system) ldap_connect_system: Failed to retrieve password from secrets.tdb i see two problems i'm having: i don't have any administrator password for the upstream ldap (and most likely, they won't give me one). i only want to authenticate my users, write-access is not needed at all. can i go away with that? the upstream ldap does not have any samba-related attributes in the db. i was under the impression, that for samba to authenticate, those attributes are required, as smb/cifs uses some trivial hashing which is not compatible with the usual posixAccount hashes. is there a way for my department's samba server to authenticate against such an ldap server?

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• 404 with serving static files in a custom nginx configuration

  - by code90

  In my nginx configuration, I have the following: location /admin/ { alias /usr/share/php/wtlib_4/apps/admin/; location ~* .*\.php$ { try_files $uri $uri/ @php_admin; } location ~* \.(js|css|png|jpg|jpeg|gif|ico|pdf|zip|rar|air)$ { expires 7d; access_log off; } } location ~ ^/admin/modules/([^/]+)(.*\.(html|js|json|css|png|jpg|jpeg|gif|ico|pdf|zip|rar|air))$ { alias /usr/share/php/wtlib_4/modules/$1/admin/$2; } location ~ ^/admin/modules/([^/]+)(.*)$ { try_files $uri @php_admin_modules; } location @php_admin { if ($fastcgi_script_name ~ /admin(/.*\.php)$) { set $valid_fastcgi_script_name $1; } fastcgi_pass $byr_pass; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /usr/share/php/wtlib_4/apps/admin$valid_fastcgi_script_name; fastcgi_param REDIRECT_STATUS 200; include /etc/nginx/fastcgi_params; } location @php_admin_modules { if ($fastcgi_script_name ~ /admin/modules/([^/]+)(.*)$) { set $byr_module $1; set $byr_rest $2; } fastcgi_pass $byr_pass; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /usr/share/php/wtlib_4/modules/$byr_module/admin$byr_rest; fastcgi_param REDIRECT_STATUS 200; include /etc/nginx/fastcgi_params; } Following is the requested url which ends up with "404": http://www.{domainname}.com/admin/modules/cms/styles/cms.css Following is the error log: [error] 19551#0: *28 open() "/usr/share/php/wtlib_4/apps/admin/modules/cms/styles/cms.css" failed (2: No such file or directory), client: xxx.xxx.xxx.xxx, server: {domainname}.com, request: "GET /admin/modules/cms/styles/cms.css HTTP/1.1", host: "www.{domainname}.com" Following urls works fine: http://www.{domainname}.com/admin/modules/store/?a=manage http://www.{domainname}.com/admin/modules/cms/?a=cms.load Can anyone see what the problem could be? Thanks. PS. I am trying to migrate existing sites from apache to nginx.

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• How can I get multiple video cards to work on linux?

  - by user17943

  I installed fedora 12. I have 2 ATI cards that I used to use on windows to run 4 monitors. A recurring problem has been to get them detected in linux. Only my secondary card is picked up linux. When I manage the displays it detects the 2 monitors connected that card. What are the specific steps I should take to get the second card detected? Supposedly there is a tool system-config-xfree. I don't have it, yum can't find it. Also I heard it has something to do with editing some xorg.conf file or something to that effect. I have absolutely no idea how to find the "bus id" of my card, or lookup the horizontal refresh rates, etc.. I would probably have no problem following the documentation & editing the file if I knew a good way to find these values. Someone also suggested installing linux twice and saving the xorg.conf it generates each time (with different card each time) and then merging the two by hand. That is like killing a fly with a hammer though, when I do this again and again in the future It'd be nice to not have to take twice as long. Thanks

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• McAfee ePolicy-Orchestrator (ePO) - policy ownership by groups?

  - by bkr

  Is there a way to grant ownership of an ePO policy to a group? Alternatively, is there a permission that can be set that would allow owners of an ePO policy to add other owners to that policy without making them ePO admin? In the case I'm looking at, ePO is deployed within a large heterogeneous organization with a large amount of delegation in the form of create/modify policy rights to allow multiple IT departments to customize to their needs for their sections of the system tree. The problem is that the policies are owned by the creator of the policy. This causes problems when they leave (staff turnover) or when other people on their teams need the ability to modify the existing policy. Unfortunately, as far as I can see, only someone who is an ePO admin can change the owners. Even the owner of the policy cannot add other owners (unless they are also an ePO admin). Ideally, I should be able to assign ownership of a policy to a group - since that would be easier to manage than me or another admin having to continually fix policy ownership or remove orphaned polices. Even just allowing the owners of the polices to add other owners would be sufficient. How are other people handling policy ownership when dealing with a large amount of delegated control of polices? Is there a way to delegate this out without making users full ePO admins?

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• iptables : how to allow incoming ftp traffic?

  - by logansama

  Hi, Still fighting my way through the jungle that is called iptables. I have managed to allow FTP access outside of our LAN: both these would work. NOTE: eth0 is the LAN interface and eth1 is the WAN interface. iptables -t filter -A FORWARD -i eth0 -p tcp --dport 20:21 -j ACCEPT or iptables -A FORWARD -i eth0 -o eth1 -p tcp --sport 20:21 --dport 1024:65535 -j ACCEPT But when i connect to a external FTP server i manage to log in and all is fine until it wishes to List the directory content. Then nothing happens as the data is blocked, due to the fact that i do not have a rule set up to allow it! (my last rule on the FORWARD chain is to block all traffic) I have tried a gazillion rules (many of which i did not understand) to try and allow the FTP traffic back through my server. One such rule for example was: iptables -A FORWARD -i eth1 -o eth0 -p tcp --sport 20:21 --dport 1024:65535 -j ACCEPT But i cannot get the List to work. It just times out after a while. Would anyone perhaps know how to build a rule which would allow FTP to List / allow such traffic back? Or have a link to sources i could work through? Thank you,

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• In which order does Excel process its formulae?

  - by dwwilson66

  I've got a fairly large spreadsheet with major calculations going on, and it's starting to slow down every time a value that's part of a calculated field is modified. I'm in the process of optimizing the file, adding arrays where I can, and seeing where I can shave off a few milliseconds here and there. Let's say there's data in Columns A-H. Column H is set based on relationships between values in Columns A, B and C, which change dynamically from an outside program. Users enter the data in Column F. Formulas in D & E calculate relationships between F & H and H & D, respectively. How does Excel manage formulae in the case, for instance, where they're dependent on data further into the sheet? Will my value in H be available the first time that the formulae in D & E calculate? or, will D & E calculate based on an old value for H, because H's update hasn't happened yet? Are there any efficiencies to be gained by positioning dependencies in particular rows or columns in the speadsheet? Do positions above and left the current position get processed sooner than things below and to the right?

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• Script to mirror MS SQL Server databases between 2 servers

  - by David W

  Hi I have about 200 sites each of which have 2 servers running MSSQL (2k5 at some sites, 2k8 at others) One server is production and the other is primarily there as a backup. We're rebuilding all of these servers this year and as part of that we will have to set up mirroring for ... a lot ... of databases. Some of these sites have 45 databases so mirroring them manually is going to be a huge pain. I was going to write a batch script which uses SQLCMD to backup the database and log, copies to the secondary server, restores the backup and log with norecovery, creates the endpoints and sets the partner. This in itself isn't too complicated, but i'd love to see what other people have done as i'm not very confident in catching errors using the process i've outlined above. I've seen Tools to manage sql 2008 database mirroring? Which looks really good, but the formatting is jumbled and I can't get it to work. If anyone has any other scripts they've written and are willing to share I'd be eternally grateful. Ideally I'd love to be able to use a script to ensure there are matching endpoints (same ports) on both servers, backup the database, backup the log, copy the backups to second server, restore database and log with norecovery, set the partners on both servers, and somehow confirm that the databases are linked and synchronized. Well, thanks for reading :)

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• The BitLocker encrypted logical drive of my laptop is not accessible. On clicking error appears,"Application not found"

  - by Nauman Khan

  I had an important personal data that was stored in my laptop drive 'F'. My 4 year old son also uses my laptop to play games. To secure my data I used bitlocker software that was already there in my windows 7 ultimate 32 bit. I am using a Dell D 630 Core2Duo laptop. The thing worked fine for me and I have been able to access my data in drive 'F' as and when I required. But today, when I tried to open my 'F' drive, an error box appeared saying "Application not found". I right clicked and checked 'properties' of 'F' drive. It showed me Used Space = 0 bytes and Free Space = 0 bytes. I opened 'Disk Management' which showed my 'F' drive file system as 'Unknown (Bitlocker Encrypted). 'Disk Management' is also showing my 'F' drive as healthy logical drive. I opened 'Manage bitlocker' and found that my 'F' drive was being shown locked and 'Unlock Drive' was displayed against it, however, when i click on 'Unlock Drive', it does not function. I opened 'TPM Administration' and found an information that 'Compatible TPM cannot be found'. My bitlocker encryption was working fine which means that I had a compatible TPM in my laptop. Where has it gone? How can I enable it? Is my 'F' Drive lost forever and thus the data in there as well?

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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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• How to handle files that don't need version control in mercurial

  - by richardh

  I am new to mercurial, and for the most part do LaTeX reports and statistical calculations in R using .csv and/or .sqlite files. Re LaTeX, all I really care is the .tex file. Re R, I don't need version control on the .csv or .sqlite files because they are static. When I do 'hg add' for a repo with a .csv and/or .sqlite file, I get a warning like: rev2.sqlite: up to 3070 MB of RAM may be required to manage this file (use 'hg revert rev2.sqlite' to cancel pending addition) So I revert and subsequently use adds like hg add -X *.sqlite. I guess I really have two questions: (1) Should I ignore these warnings? Because these large files are static, can I just add to the repo knowing that the diff files will always be empty and not worry about wasted resources? (2) If I should keep excluding these files from the repo, is there away that I can fix this option? I.E., add to my .hgrc file something that always appends an option like -I *.tex -I *.R to my 'hg add' commands? Thanks!

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• Grub rescue, unknown file system. Can't boot into Windows 7

  - by Sam J

  So, I'm confused, so I'm also going to use this question to get clarification and fix my computer. So, some background: I had Windows 7 on a 1 TB HDD and decided to partition my hard drive into two ~500 GB, one for Windows 7 and one for Ubuntu or whatever flavour I desired (like a sandbox partition...) I installed Ubuntu but the installation had issues so I decided to uninstall. Note before uninstallation I had to press f12 when I turned on to boot from my primary HDD, then choose what OS I wanted to use. Undesirable, but it worked. Anyway, after I decided to uninstall Ubuntu I went into Windows 7 Start Computer Manage and deleted the EXT4 filesystem (Ubuntu parition) giving me 4xx GB of free space. However when I restarted Windows 7, I am now unable to boot Windows. When I DON'T hit f12, I see a blank screen with a flashing underscore. When I DO hit f12, I choose my primary HDD, and then I get a GRUB error: Unknown filesystem: grub rescue _ Something I'm unclear of: GRUB boots linux partitions, right? What boots Windows? Is GRUB "overwriting" the Windows bootloader? How can I completely get Windows back to normal? (IE, It boots automatically without hitting f12.) Thanks for any help, I'm on a live CD version of Ubuntu right now until I can get back on Windows.

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