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• Scaling a LAMP website hosted on EC2

  - by Gublooo

  Hello, I'm very new to all this - I've recently managed to launch my website on EC2. As next step, I want to learn how to scale the website. I have a general idea but wanted some input from the experts about how to go about it. My website is based on LAMP but also has Red5 server which allows users to record messages and also used for playing them back. Currently this is the architecture I'm planning to setup for initial scaling. Deploy four small EC2 instances for the following purposes: Instance-1: On this instance I will run the MySql database Instance-2: On this instance I will run the red5 server Instance-3 & Instance-4 These 2 instances will be used to deploy the website and will have Apache running on them. They will communicate with the mysql server on Instance-1 and red5 server on Instance-2 using the internal IP address. As an when required, I will launch another instance of the same EBS - I will have EBS of say 50 GIG where all the mysql data will be stored. Also red5 will use this EBS to store the video messages Load-Balancer - Use the load balancer provided by Amazon to load balance Instance-3 and Instance-4 This is what I have in mind. I could be way off so please bear with me. Also I have not taken into account the case of scaling MySql server as I currently have no idea about how that will be done and whether or not it is necessary initially. I am aware that Amazon provides auto scaling and mysql scaling as well but I dont want to get into that right now. Your feedback is appreciated Thanks

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• Advice for UPC/Surge Protector in home office

  - by Fred

  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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• Secure NAT setup with iptables

  - by TheBigB

  I have Debian running device that needs to act as an internet-gateway. On top of that I want to provide a firewall that not only blocks inbound traffic, but also outbound traffic. And I figured iptables should be able to do the job. The problem: I've configured NAT properly (I think?), but once I set the default policy to DROP and add rules to for instance allow HTTP traffic from inside the LAN, HTTP is not going through. So basically my rules don't seem to work. Below is the initialization script that I use for iptables. The device has two NICs, respectively eth0 (the WAN interface) and eth1 (the LAN interface). echo 1 > /proc/sys/net/ipv4/ip_forward # Flush tables iptables -F iptables -t nat -F # Set policies iptables -P INPUT DROP iptables -P OUTPUT DROP # NAT iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -A FORWARD -i eth0 -o eth1 -m state --state RELATED,ESTABLISHED -j ACCEPT # Allow outbound HTTP from LAN? iptables -A FORWARD -i eth1 -o eth0 -p tcp --dport 80 -j ACCEPT iptables -A OUTPUT -p tcp --dport 80 -j ACCEPT Can anyone shed some light on this?

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• Linux Firefox copy/paste issue

  - by Daniel

  I'm using Firefox 15.0.1 on Fedora 17 without running gnome or kde. The problem I'm having is that whenever I select text outside of Firefox, for instance in xterm, the middle mouse button doesn't copy it inside Firefox, for instance in a text area, but rather brings up a context menu. A related problem is that whenever I middle click inside Firefox, for instance in a text input, the middle mouse button brings up a menu when I'd like it to paste. Even if I select Paste in the menu not the selected text (from outside Firefox) gets pasted but the last selected text inside Firefox. In about:config I tried "middlemouse.paste true" and also "middlemouse.paste false" together with the add-on Auto Copy but no combination worked. A middle mouse click always brings up a context menu. But the Auto Copy did help with automatically copying selected text to the clipboard. With Auto Copy the only problem I still have is pasting by middle button. Follow up: somehow the problem solved itself. After removing Auto Copy firefox works as I expect it to (as any X application). I can't figure out why it was not doing it before, probably I was messing too much with about:config and not restarting frequently enough.

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• Laptop keyboard stopped functioning properly

  - by galdikas

  Basically today out of blue my laptop keyboard started acting up. For example I press "s" but I see "`s" on the screen. Some keys don't work at all. And the weird thing is it keeps changing, in a sense that for example in the morning I press "s" and I get "`s", then few hours later "s" works correctly.. but pressing some other key output multiple characters. Then sometimes it spontaneously will start outputting some character onto any input field that is available as soon as I click on it to gain focus. And it will just keep on going and going, as if I keep a button pressed (which I don't). At first I thought this was a virus, but I have a dual boot of Windows 7 and Ubuntu, and I get same problem on both. I even tried to boo live CD, and still had same problem. Anyone had this kind of problem? It's a Toshiba Satellite c660-258. It is around year old, but quite well kept. Never spilled anything on it, or dropped it. And my wireless USB keyboard works perfectly on it (appart from the spontaneous character inputs, which I can stop by hitting NUM LOCK key)

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• Windows XP VM on VMWare ESXi 4.1 "pausing" / blocked occasionally

  - by FelixD

  We have an issue with Windows XP SP3 VMs on VMWare ESXi 4.1.0 (the free version): They sometimes seem to "pause" for several minutes. This happens rarely (maybe once a month per VM, at least noticed only that often), but still is an issue for us. It happens for three different but similar VMs on three pretty different hosts (different hardware). I have the feeling that the "pausing" is not actually the CPU blocking, but probably the harddisks, but not 100% sure. The servers have one IDE disk (C:) and one SCSI (D:) and it might be either of the two. I have seen scheduled tasks simply not starting for up to 9 minutes and then running normally again with normal speed. They were totally blocked. This is not a load issue, the VMWare hosts have average load and the VMs in question already have reserved CPU resources plus high priorities for CPU and disk. The Windows boxes run mainly MySQL, Tomcat, FileZilla server, Cygwin stuff, Java + R applications, VMWare client, Elusiva Terminal Server pro, Nagios client. Not sure if this might be related with any of that software (e.g. Elusiva). Trying to debug this, there was nothing visible in Windows Event log, other logs in C:\Windows, VMWare events etc. Unfortunately the vmware.log file ends with "Log throttled". We found that we ran into 2 VMWare bugs there: The VMWare client writes lots on bogus messages in the vmware.log, which we now disabled (log level error setting) plus the bug that VMWare does not unthrottle the log (at least so far despite VM reboots). I know there is not much guidance and that may also be the reason why I so far didn't find anything related on the web or on ServerFault, but maybe some of this rings a bell with someone? Or please direct me to what more info to post. I hope that the vmware.logs get unthrottled eventually (can't easily restart the hosts at the moment). Thanks for any input!

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• Long running php script hangs/terminates on IIS 7.5

  - by Rich

  I'm a bit of nube when it comes to configuring IIS 7.5 and Php so apologies if this is a silly question but I've been wrestling with this for over half the day and need some fresh input. I have a php application running on IIS 7.5 , php 5.4 running as fastcgi. The application works absolutley fine with the exception that long running php scripts seem to hang; no 500 error they simply seem never complete and return the results to the browser. I've written a simple test script below to eliminate the possibility of programming error in the main app : <?php /* test timeout */ /*set_time_limit(110);*/ echo "Testing time out in seconds\n"; for ($i = 0; $i < 175; $i++) { echo $i." -- "; if(sleep(1)!=0) { echo "sleep failed script terminating"; break; } } ?> If I run the script beyond 175 seconds it hangs. Below that it will return the results to the browser. Here are the time out parameters that I've set for php and fastcgi. I've also played around setting these really low in order to get various time out errors and have succeeded which brings me to the conclusion that there's another setting that I'm missing .. perhaps. fastcgi activity timeout=800 Idle Timeout = 900 request Timeout 800 Php max_execution_time=700 Any solutions or pointers in the right direction would be very ... very welcome. Thanks

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• Computer Won't Boot Properly, unless in safe mode?

  - by Mr_CryptoPrime

  I bought a computer today and booted it up, but when I did I only got a blank screen. I checked to make sure it wasn't the monitor by connecting it to my old computer...it worked. I then tried connecting my monitor to both DVI ports and found that the bottom one did work. However, now it just boots up and says "loading windows" and then when the login screen is suppose to come up the screen just goes blank and monitor says "no input, check cord" (or something like that). I tried reinstalling windows and then I was able to log on normally. I used the CD's and reinstalled all the drivers, then rebooted...now I am stuck right back where I started. I tried taking out the RAM and inserting into different slots, that didn't fix anything. I was able to boot up into windows using safe-mode. I suspected that my ATI Radeon 6950 was the issue and downloaded the drivers, but I can't install them on safe-mode. Someone said to install C++ distr. and I tried doing that to fix driver installation problem of "failed to load detection driver" but it wouldn't let me do that either. Please someone help me, I don't want to have to deal with the evil redtape of sending it back to get a replacement! My computer: -Content--text-_-"http://www.newegg.com/Product/Product.aspx?Item=N82E16883229236&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel--Content--text-_- Driver detection problem: http://www.hardwareheaven.com/hardwareheaven-tools-discussion/174912-failed-load-detection-driver-installation-error.html Driver download page: http://sites.amd.com/us/game/downloads/Pages/radeon_win7-64.aspx#1 I am using windows 7. Thanks again.

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• My nameserver isn't registered?

  - by jflory7

  My problem is that I am trying to set my domain's nameservers to the nameservers of my dedicated server. My domain is hosted by Namecheap, and everytime I try to input the two nameservers for my private server, one of them is rejected for being unregistered. My dedicated server's control panel is managed through Parallels Plesk 11.5, and the nameservers provided to me are one from the actual provider, OVH (sdns1.ovh.ca), and the other is an actual unique nameserver that points directly to my specific dedicated server. Previously, for another domain I own, I was successfully able to get Namecheap to take the nameserver without an error, so I know this is possible. I know that it works for one of my other domains. After being redirected by Namecheap to contact the server provider, I called OVH and they said it was something I would have to do myself. One interesting detail the OVH representative mentioned was that he saw that my port 53 was closed, which is the port that handles DNS. The only problem is that I have no idea or knowledge as how to open this port back up. So, my final question is how can I get this nameserver working in Namecheap to point to my dedicated server? If you need any more details, feel free to ask for clarification.

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• How can I have Vhosts with Lighttpd on Windows and keeping PHP through mod_cgi ?

  - by Pixelastic

  Hello, I installed Lighty on Windows 7 and managed to get it correctly serve both static and PHP files (through mod_cgi). At first I got the "No input file selected" message displayed when requesting a .php file. So, I updated the doc_root value in my php.ini to match the server.document-root defined in my Lighty config, and PHP stops complaining. Then I defined a VHost to point all foo.com requests to a specific dir. It worked well for all static files but when requesting a .php file, the mod_cgi was still picking files from the doc_root defined in php.ini, not in the directory I defined for server.document-root in my Vhost. I know its what's supposed to happen, PHP follows the config defined in php.ini. And I have to set this value in my php.ini otherwise no php is processed at all. What I don't understand is how I'm supposed to have virtual hosts with mod_cgi enabled here ? I tried adding [HOST=foo.com] section in the php.ini without any luck. I tried mod_fastcgi but could'n get it to work at all, I also tried mod_simple_host but could get it handle php. I managed to get it working by copying my PHP install to another dir (and changing the doc_root value) and adding a cgi.assign pointing to that install in my vhost. But this is a really hackish way, it means having one PHP install for each virtualhost. Note that I'm working on a development machine running Windows, this is not a production server, I just wanted to emulate the final Server config locally to test some changes. I googled a lot this problem but all I can find are people installing Lighty on windows with mod_cgi, or installing Lighty on Windows with virtual hosts, but I never found anyone who managed to get both.

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• Basic connectivity issues between Win 7 and XP mixed wired/wireless network. [Solved]

  - by Pulse

  Setup: Windows 7 x64 Ultimate desktop hard wired to Asus WL500gp router (WL500gpv2-1.9.2.7-d-r1445 firmware) Several Bridged VirtualBox VM's running XP, 7, ubuntu server 10.04, Mint 9 and SuSE 11.2 Win XP Pro SP3 notebook with D-Link Airplus wireless network card. No firewall or other security software currently running on either platform (at least for the duration of the test) Situation: Router is acting DHCP server Clients are receiving correct addresses and additional parameters Internet connectivity is available from all clients Windows 7 sharing is set to Network type = work (not home group) NetBT is disabled on all clients using smb over TCP What I can do: I can ping the router and internet addresses from the wireless XP notebook I can ping the Win 7 desktop and any VM from the XP wireless notebook I can ping all devices from the router All VM's and 7 can ping each other and the router as well as Internet addresses What I can't do: I cannot ping the XP wireless notebook from either the Win 7 desktop or the VM's; it always returns a destination host unreachable error. Tracert resolves the name or the XP notebook but also returns a destination host unreachable. From the above it would seem that something is blocking connectivity in a single direction (from the Win 7 box to the Win XP notebook) only but the router can ping the XP notebook. Some fresh input would be most welcome, as this is beginning to drive me batty. Thanks

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• File corruption (bad checksums) in large files copied to VMware guest

  - by AllanA

  In setting up a development lab, I've got a desktop system running ESXi 4.1.0 (free license) on SATA RAID 0 (already purchased and configured when I started this job; I'm open to hardware input as it pertains to my problem.) Its guests so far include two Win2008 Server R2 64-bit VMs and on Ubuntu 10.04 64-bit VM. I'm installing onto the Windows servers. We've been copying off some fairly large files (over a gigabyte) for an installation, hoping to install more quickly from a (virtual) hard drive than from the network for from BD-ROM. The problem is that they keep coming up with different checksums from the originals. The file sizes are the same, but md5sum reports different numbers (and so does the installer, as it refuses to continue when the checksums don't match.) I've tried copying directly from the BD-ROM (attaching the OS drive to the host system's physical drive). I've tried copying the large files onto a co-worker's Windows machine from his Blu-Ray drive; when I do that, the checksums match. But when I copy from his machine to the VM guest over a network share, the checksums no longer match. Thinking this meant a corrupt destination drive, I deleted it in vSphere and added another freshly created drive. The problem persists. I'm not sure what to try next.

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• iptables (DNAT)

  - by user1126425

  I have a host that acts as a gateway for other hosts. The configuration is such that eth0(192.168.1.3) is connected to internet via a router and eth1(172.16.2.50) is connected to internal network via switch. Given that, this host is also running a service that is bound to eth1 and serves the internal network. I want to extend this service to the outside world as well and was trying to manipulate iptables so that any request that comes to this host via eth0 and is directed to 192.168.1.3:80 is send to 172.16.2.50 and internet users can also make use of the service. Here are my iptable rules for setting up the host as gateway (and these work fine): sudo iptables -t nat -A POSTROUTING -s 172.16.2.0/16 -o eth0 -j MASQUERADE sudo iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o eth1 -j MASQUERADE sudo iptables -A FORWARD -s 172.16.2.0/16 -o eth0 -j ACCEPT sudo iptables -A FORWARD -d 172.16.2.0/16 -m state --state ESTABLISHED,RELATED -i eth0 -j ACCEPT And these are the rules that I am trying to add to the iptables to achieve my ends: sudo iptables -A INPUT -d 192.168.1.3 -p tcp -dport 80 -i eth0 -j ACCEPT sudo iptables -t nat -A PREROUTING -d 192.168.1.3 -p tcp -dport 80 -j DNAT --to-destination 172.16.2.50:80 sudo iptables -t nat -A PREROUTING -s 172.16.2.50 -p tcp -sport 80 -j SNAT --to-source 192.168.1.3:80 sudo iptables -A FORWARD -d 192.168.1.3 -p tcp -dport 80 -m state --state ESTABLISHED,RELATED -j ACCEPT When I do so, I get error like : "multiple -d flags not allowed" ... Can someone tell me how to resolve this error... and do the entries that I want to add will serve my purpose ? Thanks!

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• Create new vms with a template with a csv. Possible?

  - by EdConde

  I am new to Powershell and Powercli... but i manager few ESX environments and really would like to do as much as possible via powershell. I am trying to do as much as i can via Powershell. On with the help I need: I used this one liner to create VMs from templates. But the problem is there has to be some user input after each new VM is created. New-VM name -Template template -VMHost VMHost -Datastore Datastore What i would like to do is be able to import via CSV the name of the new vm, the template to use, the host to put the new vm and the datastore all from a CSV. I don't know if it is as easy as below, but i kept getting errors. Import-Csv "C:\powershell\Data\VM2Create.csv" | Foreach-object{ New-VM $.name -Template $.template -VMHost $.VMHost -Datastore $.Datastore} I know there some () or {} or possibly | that need... just don't know where to put them... The csv i think would look like this: name, template, vmhost, datastore Any help or thoughts would be much appreciated...

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• SMTP Server setting on Windows 2008 R2

  - by user223298

  I am very very new to this and just trying to configure SMTP virtual server. I have followed a few threads to get it all running, but the mails are not being delivered. What I have done so far - 1) Install SMTP server. 2) SMTP server Properties General Tab - IP address is set to 'All Unassigned'. Access Tab - Authentication is anonymous access. Everything else is left to Default settings. Delivery Tab - Outbound security is anonymous access. In Advance section, entered the domain name in the FQDN field, and localhost in Smart host field. 3) Created an Inbound Rule for SMTP service to allow connections to Port 25. When I try to telnet, everything works up until the point the mail has to be send. Now, the sender's domain is different to the receiver's domain. Not sure if settings have to be changed to allow that? I had set the Relay restrictions on SMTP server, but because I couldn't send the mails, I thought I might as well make it work without the relay first. The error I see while sending the mail is 451 Timeout waiting for client input. I used to get some other error before when I had Relay restrictions on. Can anyone please point me in the right direction? Please let me know if you need more information. Thanks.

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• Conditional formatting Excel 2007/2010: Highlight the first cell in the row that contains duplicate values?

  - by Nancy Prades

  I have a table with hundreds of columns and rows of data; each row and column have a header. For instance, column headers are ITEM, FILE1, FILE2, FILE3, etc. and row headers are AA, BB, CC, DD, and so on. Under conditional formatting, I used "Highlight Cells Rules" "Equal to", in order to highlight cells that have values equal to the value in another cell. In this case, my formula rule is: Rule: Cell Value = $A$1 Applies to: =$B$3:$G$8 When I input "X" into cell A1, Excel will highlight all of the cells that have a value equal to "X", in this case, the following cells are highlighted: B3, C5, G6, and E8. Here's my problem. The data that I am working with contains more than 100 columns and rows. I want to identify all of the ITEMS (AA, BB, CC, etc.) that contain the duplicate file "X". In order to do this I have to scroll right to left, and up and down. Here's my question. Is there a way to use conditional formatting to add an additional rule? I want to keep the current rule, but I also want the row header to be highlighted if any of the cells in that row contain a value equal to "x". In this case, I want AA, CC, DD, and FF to also be highlighted. Is this possible? I've spent days trying to figure this out - and no luck. Any help would be appreciated! :) Nancy A B C D E F G 1 X 2 ITEM FILE1 FILE2 FILE3 FILE4 FILE5 FILE 6 3 AA x t y u d w 4 BB r y a b k d 5 CC y x f u i g 6 DD t v b d f x 7 EE e w y s l n 8 FF w u n x e m

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• Sound doesn't work anymore after replacing RAM

  - by thejh

  Hello, today, I replaced one old RAM module with two newer, bigger ones, but now, the sound doesn't seem to work anymore. Already ran alsaconf and it didn't help. Output of lspci for the audio device: 00:07.0 Audio device: nVidia Corporation MCP67 High Definition Audio (rev a1) Subsystem: Giga-byte Technology Device a002 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 (500ns min, 1250ns max) Interrupt: pin A routed to IRQ 21 Region 0: Memory at f5100000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Queue=0/0 Enable- Address: 0000000000000000 Data: 0000 Masking: 00000000 Pending: 00000000 Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+ Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel The audio device is onboard and has six configurable outputs, two or so are also capable of being an input (if I remember it correctly), but I don't know how to control it under linux. Does somebody know how/whether replacing the RAM could be related to my problem and/or how to fix it?

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• How to stop Vista from auto changing video resolution?

  - by bialix

  I have new Acer Aspire Revo R3600 computer with Vista pre-installed. The computer has NVidia video adapter. While connecting 17" LCD monitor (LG L1742S) via VGA cable it works fine, and I can change the resolution of the display from max 1920*1024 down to some other value, and after reboot the settings are restored correctly. But when I'm connecting bigger full HD 1920*1080 display (LG E2250) via VGA cable then every boot I have the same problem: I see boot progress window, then I see MS logo, then I see welcome screen then I start to see desktop and suddenly monitor switch off and show me the message about unsupported frequency of input signal As I understand Vista tries to auto-change resolution and sets wrong parameters. I've tried to boot into safe mode and into low-resolution mode, every time I have the same problem: Vista boot-up and suddenly monitor stops working. I've tried to connect this monitor to notebook with Windows XP and has no problem to work with this display on its native resolution. How can I disable this display resolution auto-changer in Vista? Or maybe there is another workaround?

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• where Redirect permanent rule need to be add

  - by eli1128

  I want redirect my web site http request to https my web site is https://test my apache is version 2.4 and ssl configration is (ssl.conf) on separate file from httpd.conf and I am not using .htaccess file so where I should append. i have tried on both file but didn't work. Redirect permanent / https://test is that should be on my httpd.conf or ssl.conf or did I miss something else. I prefer to use redirect over rewrite. Rewrite.log 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial/redir#1] (2) init rewrite engine with requested uri /error/HTTP_BAD_REQUEST.html.var 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial/redir#1] (3) applying pattern '^(.*)$' to uri '/error/HTTP_BAD_REQUEST.html.var' 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial/redir#1] (4) RewriteCond: input='off' pattern='!=on' = matched 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial/redir#1] (2) rewrite /error/HTTP_BAD_REQUEST.html.var - *ttps://test/error/HTTP_BAD_REQUEST.html.var[QSA,R=301,L] 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial /redir#1] (2) implicitly forcing redirect (rc=302) with *ttps://test/error/HTTP_BAD_REQUEST.html.var[QSA,R=301,L] 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial/redir#1] (1) escaping *ttps://test/error/HTTP_BAD_REQUEST.html.var[QSA,R=301,L] for redirect 10.10.86.1 - - [05/Apr/2012:15:10:19 --0700] [test/sid#7ce00][rid#277448/initial/redir#1] (1) redirect to *ttps://test/error/HTTP_BAD_REQUEST.html.var%5bQSA,R=301,L%5d [REDIRECT/302]

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• Allow connections to only a specific URL via HTTPS with iptables, -m recent (potentially) and -m string (definitely)

  - by The Consumer

  Hello, Let's say that, for example, I want to allow connections only to subdomain.mydomain.com; I have it partially working, but it sometimes gets in a freaky loop with the client key exchange once the Client Hello is allowed. Ah, to make it even more annoying, it's a self-signed certificate, and the page requires authentication, and HTTPS is listening on a non-standard port... So the TCP/SSL Handshake experience will differ greatly for many users. Is -m recent the right route? Is there a more graceful method to allow the complete TCP stream once the string is seen? Here's what I have so far: #iptables -N SSL #iptables -A INPUT -i eth0 -p tcp -j SSL #iptables -A SSL -m recent --set -p tcp --syn --dport 400 #iptables -A SSL -m recent --update -p tcp --tcp-flags PSH,SYN,ACK SYN,ACK --sport 400 #iptables -A SSL -m recent --update -p tcp --tcp-flags PSH,SYN,ACK ACK --dport 400 #iptables -A SSL -m recent --remove -p tcp --tcp-flags PSH,ACK PSH,ACK --dport 400 -m string --algo kmp --string "subdomain.mydomain.com" -j ACCEPT Yes, I have tried to get around this with nginx tweaks, but I can't get nginx to return a 444 or abrupt disconnect before the client hello, if you can think of a way to achieve this instead, I'm all ears, err, eyes. (As suggested by a user, bringing this inquiry over from http://stackoverflow.com/questions/4628157/allow-connections-to-only-a-specific-url-via-https-with-iptables-m-recent-pote)

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• OSX server setup suggestions

  - by Tom

  I am looking into the possibility to setup an OSX server for my employees, and would like some input on what is the best approach to meet my needs, and perhaps some suggestions if I am moving in the wrong direction. I am thinking of a Mac Mini OSX server, and are not sure if my needs will be met, and what possibilities are out there. I want these capabilities: - Groups/Users managed on server - Shared folders and private folders for users/groups - Access to activated services - Server hosting software for the users (developing tools ++) - Similar to Windows Terminal Server - Virtual desktop environment (both local and over internet/VPN) - Possible to access trough Mac and Windows The reason I am looking at OSX server is that my employees almost only work in OSX environment, and I want to offer the capabilities to logon to the server trough some kind of terminal software, and have full access to their work OSX environment and software on their mac or pc, from anywhere they might be. Instead of having to have multiple setups and need for spending alot of time installing and setting up needed software on every client. This is a small business, where some work on local network, and others from the internet, preferably trough VPN. But a terminal server solution, that are fast and easy to manage would be perfect for our needs. So if anyone have any experience with a similar setup, please let me know what you did, and your experiences with your setup.

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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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• Install Peppermint OS three on Asus EeePC

  - by Kithoth

  I just had a new Asus EeePC R051CX. Out of the box, the installed OS is Ubuntu 12.04 LTS, but I am trying to install Peppermint OS three (as single boot). Problem. Once on live CD (well, live USB stick...), I'm in trouble in both following situations: Try Peppermint OS Live In this case, the first thing I get is a message reading The system is running in low-graphics mode Your screen, graphics card, and input device settings could not be detected correctly. You will need to configure these yourself. I can solely press "return" to accept, then I have a list of 4 options to answer the question "What would you like to do?". But I simply can't do anything at this moment, except switching to console mode or rebooting (keyboard / mouse controls don't allow me to do anything else). Install Peppermint OS Something I really don't understand... it launches the Ubuntu Recovery Media (which was already installed when I received the device)! Also, it says in the bottom ERROR: This recovery media only functions on Ubuntu systems. All I can do is quit (that is, reboot). One last important thing that comes to my mind: this stick worked just fine on the other computers I've tried it on. I really hope someone could bring me the light, a friend of mine told me how cool this OS is for EeePCs. Don't want to give up! Thanks. Edit I finally could install Peppermint, but not by understanding why I couldn't do it the logical way. Instead, I reinstalled Ubuntu myself (erasing the factory one). Then, I could simply boot on my live USB and perform a fresh install of Peppermint. So, I still don't know how and why the mentioned problem occurred.

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• Shell replacement for kiosk environment with desktop icons

  - by tuesprem

  I have to deploy around 80 touch-screen terminals for my company. We're going to run several Windows applications on those terminals and they'll be operated by touch input only. I basically want those machines to run in a kiosk mode, so employees won't be able to launch any programs than the ones they're supposed to (also, this will hide the task bar/start menu, which will give it a much nicer, corporate look). There's usually one app that should automatically launch on startup and other apps that can be launched from the desktop. I've tried to accomplish this (under Windows 7 Pro) with a custom shell replacement. This removes the task bar/start menu like I described earlier. I used an AutoHotKey script for this, because it's easy to, for instance, define hotkeys so admins will still be able to launch stuff like Windows Explorer (okay, I know I could just launch it from the task manager [Ctrl+Shift+Esc] but I'm considering locking that as well). So far so good. Some problems though: No desktop icons. Needed to launch apps from the desktop. No wallpaper. Required for CI. Is there any way around this? I wouldn't mind using another shell replacement, as long as it's reasonably lightweight. I'd love to get the wallpaper and desktop icons to show with something like AutoHotKey though. Thanks!

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• IPtables and Remote Desktop with Proxy

  - by Sebastian

  So I setup a windows 2008 web server R2 on VirtualBox. Currently using Bridged Network. I can remote desktop to the machine hosting the VM (10.0.0.183) but cannot remote desktop to the VM itself (10.0.0.195). The remote port on the VM set to 5003. VM setup to accept remote connections (windows side). We also use a proxy for our internet, and I added these rules under NAT. (centOS 5) on our proxy box. -A INPUT -p tcp --dport 3389 -j ACCEPT -A REROUTING -i ppp0 -p tcp --dport 3389 -j REDIRECT --to-port 5003 -A FORWARD -d 10.0.0.195 --dport 5003 -m state --state NEW,ESTABLISHED,RELATED -j ACCEPT I've been trying for hours and hours and just cannot get it to work. I also used freedns so that we can use a domain name to connect too this VM over the internet. (the DNS points to our external IP address). If we don't get this right we will have to purchase a PPoE from an ISP to connect to this VM remotely, but I know that there is an alternative route if I can just get this port forwarding right!

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