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  • Full disk encryption on dual boot system using TrueCrypt

    - by Anders Hovgaard
    I'm thinking about encrypting my whole harddrive for example using TrueCrypt, which I've used for encrypting file containers for a while. It is possible to encrypt the whole harddisk through the program and then add a password secured bootloader before the actual bootloader. Is it possible to do this on a dualboot system with Windows 7 and Fedora 15 currently using Grub as the main bootloader? If so, is it possible to reinstall a system later or will that ruin the whole setup? Thanks

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  • multiple "ÏF" formula

    - by Karen
    I am trying to write an IF formula for an order form where a discount is applied depending on the amount of units ordered..... The discounts are: 0 to 24 units - 0 discount 24 to 59 units – 5% discount 60 to 95 units – 10% discount 96 to 131 units – 15% discount 132 to 263 units – 20% discount 264+ units - 30% discount the cell that i am taking the total from is J1028. I have no idea how to do IF formula's so desperately need some help. Thanks

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  • Migrating from register.com webmail

    - by mgb
    Anyone know of any tools to migrate emails from register.com's webmail to anything else (gmail, local mbox, anything!), I have nearly 15 years of mails and folders I want to keep. Other than spending ages writing some Perl scraper code I wondered if anyone else had already done this. sorry - It's impossible to search Google for the name of a registrar!

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  • 64-bit linux kernel only seeing 3 of 4GB after upgrade...

    - by Blaine
    Hey everyone. I am running Ubuntu 9.04 64-bit on my macbook. I had 2GB of ram before, and everything ran great. I just upgraded to 2x2GB (4GB), but my system only sees 3GB of it. OS X, which I am dual booting, sees all 4GB. Also, my video performance is incredibly lacking. Before the upgrade my compiz benchmark was full at 80fps, and now it is at 22fps with very choppy window dragging. Has anyone ever heard of this on a 64-bit kernel? I just don't quite understand what could be the issue. 10$ uname -a Linux macbook 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 19:25:34 UTC 2009 x86_64 GNU/Linux $ free -m total used free shared buffers cached Mem: 2953 1031 1921 0 114 427 -/+ buffers/cache: 489 2463 Swap: 7812 0 7812 9$ lsmod Module Size Used by i915 77960 2 drm 123232 3 i915 binfmt_misc 18572 1 ppdev 16904 0 btusb 21784 2 bridge 63776 0 stp 11140 1 bridge bnep 22912 2 vboxnetadp 109356 0 vboxnetflt 116972 0 vboxdrv 1721612 1 vboxnetflt uvcvideo 69640 0 compat_ioctl32 18304 1 uvcvideo videodev 45184 2 uvcvideo,compat_ioctl32 v4l1_compat 23940 2 uvcvideo,videodev lp 19588 0 parport 49584 2 ppdev,lp snd_hda_intel 557492 3 snd_pcm_oss 52352 0 snd_mixer_oss 24960 1 snd_pcm_oss snd_pcm 99464 2 snd_hda_intel,snd_pcm_oss arc4 10240 2 snd_seq_dummy 11524 0 ecb 11392 2 snd_seq_oss 41984 0 snd_seq_midi 15744 0 snd_rawmidi 33920 1 snd_seq_midi snd_seq_midi_event 16512 2 snd_seq_oss,snd_seq_midi snd_seq 66272 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event ath9k 310584 0 snd_timer 34064 2 snd_pcm,snd_seq snd_seq_device 16276 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq mac80211 251528 1 ath9k iTCO_wdt 21712 0 iTCO_vendor_support 12420 1 iTCO_wdt joydev 20992 0 video 29204 0 snd 78920 15 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device applesmc 37700 0 output 11648 1 video soundcore 16800 1 snd pcspkr 11136 0 cfg80211 43680 1 mac80211 appletouch 19972 0 isight_firmware 11520 0 input_polldev 12688 1 applesmc intel_agp 39408 1 snd_page_alloc 18704 2 snd_hda_intel,snd_pcm led_class 13064 2 ath9k,applesmc hid_apple 15872 0 usbhid 47040 0 ohci1394 42164 0 ieee1394 108288 1 ohci1394 sky2 63364 0 fbcon 49792 0 tileblit 11264 1 fbcon font 17024 1 fbcon bitblit 14464 1 fbcon softcursor 10368 1 bitblit Some information from dmesg: [ 795.820163] ACPI: EC: GPE storm detected, transactions will use polling mode [ 1762.709516] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 1763.078130] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 2362.760889] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 2416.352084] ACPI: EC: missing confirmations, switch off interrupt mode. [ 3718.721095] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 3719.108914] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 4318.773266] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 9513.813066] CE: hpet increasing min_delta_ns to 15000 nsec [ 9693.815684] npviewer.bin[6736]

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  • memcached and PHP ... massive lag with sessions

    - by Ben Dauphinee
    I'm working on a new server built with Unbuntu 10.04, running php-fastcgi, nginx, and memcached. phpinfo() script loads and works great, same as a test memcached script. For any script using sessions, page load time rockets through the roof. --- memcached.ini --- extension=memcached.so memcache.hash_strategy = "consistent" memcache.max_failover_attempts = 100 memcache.allow_failover = 1 session.save_handler = memcached session.save_path = "tcp://127.0.0.1:11211?persistent=1&weight=1&timeout=1&retry_interval=15" Let me know if you need to see any other configs.

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  • Mavericks not booting after successful installation over Lion (10.7.5)

    - by rpatil
    On my 2012 MacBook Pro (15 inch, non retina, i7, 10GB RAM) after successful installation when Mavericks tried to boot, it is freezing there with "Still waiting for root device" (Seen Using CMD + V during boot). Someone please help. My Mac is not usable anymore. Boots in safe mode but freezes in safe mode too. From safe mode reinstalled Mavericks but failed again with same error. If it can't be fixed please let me know if it can be reverted.

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  • How to Protect Apache server from this attack

    - by 501496270
    Is there a .htaccess solution against this attack 188.165.198.65 - - [17/Apr/2010:15:46:49 -0500] "GET /blog/2009/04/12/shopping-cart/?cart=../../../../../../../../../../../../../../../../etc/passwd%00 HTTP/1.1" 200 28114""Mozilla/4.0 (compatible; MSIE 7.0;Windows NT 5.1; .NET CLR 1" my WordPress .htaccess is # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase /blog/ RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /blog/index.php [L] </IfModule> # END WordPress

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  • HTTP caching headers: how should must-revalidate work?

    - by Bobby Jack
    Using trac, I'm getting a response with the following header: Cache-control: must-revalidate Moreover, no 'Expires' header is being sent. Our local proxy, however, is caching these responses, so when an edit is made, pages need to be 'hard refreshed' to update. Is the proxy misbehaving? Other headers that might be relevant: Connection Keep-Alive Proxy-Connection Keep-Alive Keep-Alive timeout=15, max=100

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  • Troubleshooting painfully slow Windows XP boot

    - by shan
    When I reboot my machine, it takes around 10-15 minutes to boot. Tried removing unused programs, disk defragmentation, check disk, but I'm not able to identify the issue. Any ideas to troubleshoot to see whether there is any failure, trying to start a service/program?

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  • How can I troubleshoot Virtualbox port forwarding from Windows guest to OSX host not working?

    - by joe larson
    There are a plethora of questions about virtual box port forwarding problems but none with my specific details. I have a Windows install living in Virtual Box, hosted within OSX. I've got several webservers running on localhost on different ports within the Windows install. I cannot for the life of me get port forwarding to work so I can access those webservers from OSX. My settings look like this (yes I have a NAT adapter): And in my vbox configuration file the relavent portion looks like this: <NAT> <DNS pass-domain="true" use-proxy="false" use-host-resolver="false"/> <Alias logging="false" proxy-only="false" use-same-ports="false"/> <Forwarding name="RLPWeb" proto="1" hostport="7084" guestip="127.0.0.1" guestport="7084"/> <Forwarding name="UtilWeb" proto="1" hostport="4040" guestip="127.0.0.1" guestport="4040"/> <Forwarding name="WCARLP" proto="1" hostport="8084" guestip="127.0.0.1" guestport="8084"/> <Forwarding name="WCAUtil" proto="1" hostport="4848" guestip="127.0.0.1" guestport="4848"/> </NAT> I've turned off the Windows firewall to ensure it is not interfering, and I am not running a firewall on OSX. Anyway, when I attempt to go to for example http://127.0.0.1:4040/ on any of my OSX browsers, it will eventually time out. The log file for this VM shows that it is correctly reading the settings and implying it's doing the right thing here: 00:00:08.286 NAT: set redirect TCP host port 4848 => guest port 4848 @ 127.0.0.1 00:00:08.286 NAT: set redirect TCP host port 8084 => guest port 8084 @ 127.0.0.1 00:00:08.286 NAT: set redirect TCP host port 4040 => guest port 4040 @ 127.0.0.1 00:00:08.286 NAT: set redirect TCP host port 7084 => guest port 7084 @ 127.0.0.1 00:00:08.290 Changing the VM state from 'LOADING' to 'SUSPENDED'. 00:00:08.290 Changing the VM state from 'SUSPENDED' to 'RESUMING'. 00:00:08.290 Changing the VM state from 'RESUMING' to 'RUNNING'. 00:00:08.337 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000012017d000 w=1834 h=929 bpp=32 cbLine=0x1CA8, flags=0x1 00:00:09.139 AIOMgr: Host limits number of active IO requests to 16. Expect a performance impact. 00:00:13.454 NAT: DHCP offered IP address 10.0.2.15 I've tried setting the Host IP to 127.0.0.1, and I've tried setting Guest IP blank and also 10.0.2.15. None of these seem to help. What else can I look at to troubleshoot this issue? Details of setup: OSX 10.6.8 Windows 7 Professional 64bit VirtualBox 4.1.2

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  • Xeon X3220 Dual-Core 2.4 GHz - which march setting for gcc?

    - by hurikhan77
    Should I use -march=nocona or -march=core2 when compiling binaries for this processor with gcc 4.3? vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Xeon(R) CPU X3220 @ 2.40GHz stepping : 8 cpuid level : 10 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni ssse3 cx16 lahf_lm I cannot really find if this CPU is already core2 architecture... Only find information about the quad core variants, but this CPU is only dual core.

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  • TTL for PTR records on Windows 2003 Server DNS

    - by Kyle Brandt
    When I look at the TTL (Time to Live) for PTR records (Reverse Lookup Zone) on one of our Windows 2003 DNS servers I see some are at 15 minutes, others are at 20. They have "Delete this record when it becomes stale" checked. These PTR records are for workstations that get IPs from Windows DHCP, so I think that creates the PTR records dynamically? How is TTL for these records set?

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  • How to get rid of Gmail's on "behalf of" using postfix

    - by user2815
    I'm using the default configuration of postfix on Ubuntu 9.04, and I've been trying to configure Gmail to send email through my server. I'm looking for a simple configuration for 10-15 users (like using a password file), but all the tutorials I have found have been too extensive and seem very enterprise-oriented. I just need to configure postfix with AUTH/TLS that is compatible with gmail.

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  • Apache won't serve images larger than ~2K

    - by dtbaker
    Hello, Just upgraded an old box to Ubuntu to 10.04.2 LTS. Apache will not display images to a browser that are over about 2K. Small images seem to display fine. Static HTML and PHP continues to works fine as well. Installed: apache2 2.2.14-5ubuntu8.4 apache2-mpm-prefork 2.2.14-5ubuntu8.4 apache2-utils 2.2.14-5ubuntu8.4 apache2.2-bin 2.2.14-5ubuntu8.4 apache2.2-common 2.2.14-5ubuntu8.4 here is an ngrep of an image that doesn't display fine in the browser: T 192.168.0.4:32907 - 192.168.0.54:80 [AP] GET /path/path/logo.png HTTP/1.1..Host: 192.1 68.0.54..Connection: keep-alive..Accept: application/xml,application/xhtml+ xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5..User-Ag ent: Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13..Accept-Enco ding: gzip,deflate,sdch..Accept-Language: en-US,en;q=0.8..Accept- Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3.... T 192.168.0.54:80 - 192.168.0.4:32907 [A] HTTP/1.1 200 OK..Date: Wed, 09 Mar 2011 05:28:38 GMT..Server: Apa che/2.2.14 (Ubuntu)..Last-Modified: Tue, 05 Oct 2010 11:59:17 GMT ..ETag: "17b6f4-15fe-491dd63eb2f40"..Accept-Ranges: bytes..Conten t-Length: 5630..Keep-Alive: timeout=15, max=100..Connection: Keep -Alive..Content-Type: image/png.....PNG........IHDR...!...v...... .%.....sRGB.........bKGD..............pHYs.................tIME.. etc... This looks ok to me! I have tried firefox and chrome, both display small images fine but when a large image is requested the browser prompts to download the file. When the image file is saved to the local computer it is corrupt, it also takes a long time to save which makes me think the browser cannot see the content-length header sent from apache. Also when I look at the saved image file it includes the headers from apache, along with a bit of garbage at the top, like so: vi logo.png: ^@^UÅd^@$^]V^S^H^@E^@^Q,n!@^@@^F^@^@À¨^@6À¨^@^D^@P^Y¬rÇŹéw^P^@Ú^@^@^A^A^H ^@^GÝ^]^@pbSHTTP/1.1 200 OK^M Date: Wed, 09 Mar 2011 04:47:04 GMT^M Server: Apache/2.2.14 (Ubuntu)^M Last-Modified: Tue, 05 Oct 2010 11:59:17 GMT^M ETag: "17b6ff-157c-491dd63eb2f40"^M Accept-Ranges: bytes^M Content-Length: 5500^M Keep-Alive: timeout=15, max=94^M Connection: Keep-Alive^M Content-Type: image/png^M ^M PNG^M etc... Any ideas? It's driving me nuts. There is nothing in apache error logs, and permissions are fine (because the image data is there, it's just somewhat corrupt). There's no proxy or iptables on this ubuntu box either. Thanks heaps!! Dave ps: just tried on IE from a different computer, same problem :( pps: rebooted server, no help.

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  • lacp, cicso 3550, 3560, help with configuration

    - by Flamewires
    Hey all this is a repost from a question I asked on the cisco forums but never got a useful reply. Hey I'm trying to convert the FreeBSD servers at work to dual-gig lagg links from regular gigabit links. Our production servers are on a 3560. I have a small test environment on a 3550. I have achieved fail-over, but am having troubles achieving the speed increase. All servers are running gig intel (em) cards. The configs for the servers are: BSDServer: #!/bin/sh #bring up both interfaces ifconfig em0 up media 1000baseTX mediaopt full-duplex ifconfig em1 up media 1000baseTX mediaopt full-duplex #create the lagg interface ifconfig lagg0 create #set lagg0's protocol to lacp, add both cards to the interface, #and assign it em1's ip/netmask ifconfig lagg0 laggproto lacp laggport em0 laggport em1 ***.***.***.*** netmask 255.255.255.0 The switches are configured as follows: #clear out old junk no int Po1 default int range GigabitEthernet 0/15 - 16 # config ports interface range GigabitEthernet 0/15 - 16 description lagg-test switchport duplex full speed 1000 switchport access vlan 192 spanning-tree portfast channel-group 1 mode active channel-protocol lacp **** switchport trunk encapsulation dot1q **** no shutdown exit interface Port-channel 1 description lagginterface switchport access vlan 192 exit port-channel load-balance src-mac end obviously change 1000's to 100's and GigabitEthernet to FastEthernet for the 3550's config, as that switch has 100Mbit speed ports. With this config on the 3550, I get failover and 92Mbits/sec speed on both links, simultaneously, connecting to 2 hosts.(tested with iperf) Success. However this is only with the "switchport trunk encapsulation dot1q" line. First, I do not understand why I need this, I thought it was only for connecting switches. Is there some other setting which this turns on that is actually responsible for the speed increase? Second, This config does not work on the 3560. I get failover, but not the speed increase. Speeds drop from gig/sec to 500Mbit/sec when I make 2 simultaneous connections to the server with or without the encapsulation line. I should mention that both switches are using source-mac load balancing. In my test I am using Iperf. I have the server(lagg box) setup as the server(iperf -s), and the client computers are client(iperf -c server-ip-address), so the source mac(and IP) are different for both connections. Any ideas/corrections/questions would be helpful, as the gig switches are what I actually need the lagg links on. Ask if you need more information.

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  • How do I extend the virsh/qemu/libvirt Timeout?

    - by Nick
    There's a known issue with starting virtual machines with large hard drive images. Apparently, the time-out is 3 seconds, but in reality, it can take up to 15 seconds for a machine to start. I've read several bug reports, and people confirming it's a time-out problem, but I have yet to see a solution. Is there an option I can pass, like: virsh start MyMachine --ignore-timeout Or a config file that needs changed? Thanks!

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  • Configure Apache with a htaccess file to strip out unneeded respond-headers.

    - by Koning Baard XIV
    For ultimate speed, I want my Apache server strip unneeded headers from the response. Currently, the headers looks like this (excluding the status header): Connection:Keep-Alive Content-Length:200 Content-Type:text/html Date:Sat, 15 May 2010 16:28:37 GMT Keep-Alive:timeout=5, max=100 Server:Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8l DAV/2 PHP/5.3.1 Phusion_Passenger/2.2.7 X-Powered-By:PHP/5.3.1 Which I want to be like: Connection:Keep-Alive Content-Type:text/html Keep-Alive:timeout=5, max=100 How can I configure this in a .htaccess file? Thanks

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  • Server and Application architecture for large outgoing email volume.

    - by Ezequiel
    Hi, we need to develop an application to send large amount of emails (newsletters) We estimate 15 millions of emails per month (6 - 10 emails per seconds). Would you recommend me the proper architecture for this application? should we have several MTA agents and use them in a round robin fashion? What considerations should we take on account to not being treated as spammers (its really not spam what we are going to send). Thanks for your help. Ezequiel

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  • SMB returns the entire file instead of header info

    - by billdlawson
    Starting a section of code checks for access to many data files (flat files so each table is a file) and when I do a packet capture, in our capture only the header info is sent by the server to the client. However I have one Customer who is using a SAN that gets the whole file instead of just the header info,and besides just being slower, this is causing file access issues. They have already turned off OPLOCKS at the server and at the workstations. This is not client server. The data files and the application reside on the server but the users run the application locally via a shortcut with a mapped drive or UNC. So when I simply select an option that prompts for a vehicle number, not tryng to select a record but rather simply verify the datafiles are accessible, that window opens in 1-2 seconds for me. When they do the same thing it takes 6-15 seconds after there several users are running the program. Maximum number of users is 15. The program has a lot of small modules, 800 .cob modules. So it is very chatty but these are datafiles. We have Wireshark captures that show he's pulling the whole file and we're just getting the header. Thier capture vs ours. We suspect the SAN. Has anyone ever heard of a SAN improperly interpreting runtime requests? So an SMB request. This is Acucobol-GT (now Microfocus). The application is written in COBOL. This is not a new program just a new problem. This is one customer of over a thousand who are otherwise running smoothly and we are totally stumped. All XP users, the server is Windows 2003 (with Virtual server) and I don't yet know the SAN info. Also we have many installations running virtual servers but only few on SANs or we just don't know it. This is not a network throught put issue, the load is less than 5% on the server and theer are no timeout or retransmits. PS If it wasn't for Wireshark I'd still be chasing my tail. An application trace file on thier installation just looks like they run slower. If you want the Wireshark trace file I can make it available. Thanks in advance - Please excuse my verbosity (word?) but I'm not sure what's relavent.

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  • Is the 2010 Apple Macbook Air 4GB memory upgrade worth it?

    - by ehfeng
    I'm looking to buy the new Macbook Air and, being from Windows, am unfamiliar how much memory it would be advisable to have (thinking about the 4GB upgrade). For those from the fairer OS: how much memory does the operating system take up? how much memory does Google Chrome, with 10-15 tabs open, probably a Youtube, Gmail, Docs among them, usually take up? Microsoft Word, Excel, Powerpoint? I plan on purchasing the 1.86Ghz 13" Macbook Air.

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  • Free memory on linux [closed]

    - by Julia Roberts
    Possible Duplicate: Meaning of the buffers/cache line in the output of free What would be a good setting to free memory on linux? I have 8GB but gets used up so fast. current settings: kernel.sched_min_granularity_ns = 10000000 kernel.sched_wakeup_granularity_ns = 15000000 vm.dirty_ratio = 40 kernel.pid_max = 4096 vm.bdflush = 100 1200 128 512 15 5000 500 1884 2 What settings would I need so linux frees old ram faster?

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