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  • Intel z77 vs h77 for intensive compiling, gaming [closed]

    - by Bilal Akhtar
    I'm in the market for a desktop motherboard (preferably ATX) that functions well with Intel i7-3770 Ivy Bridge processor at 3.4 GHz with LGA1155 socket. That processor is very fast, and it should handle all my tasks. My question is about the type of motherboard chipset I should choose to accompany it. I plan to use my rig for compiling and developing Debian package and other OS components, web development, occasional Android apps, chroots, VMs, FlightGear, other gaming but nothing serious, and heavy multitasking, all on Ubuntu. I do NOT plan to overclock, and I never will, so that's not a cause of concern for me. That said, I'm down to three chipset choices: Intel H77 Intel Z68 Intel Z77 I'm planning to go for H77 since I don't need any of the new features in Z77. I don't plan to use a second GPU and I will never overclock my CPU/GPU. My question is, will H77 based MoBos handle all my tasks well? Intel advertises that chipset as "everyday computing" but other sites say it's base functionality is the same as Z77. Intel rather advertises Z77 for "serious multitaskers, hardcore gamers and overclocking enthusiasts". But the problem with all Z77 motherboards I've seen is, they're way too expensive and their main feature seems to be overclocking, which won't be useful to me. Will I lose any raw CPU/GPU performance or HDD R/w with the H77 when comparing it to a Z77? Will heat, etc be an issue too? From what I've seen, Z77 motherboards have larger heat sinks when compared to H77 ones. Will that be an issue too, if I go with an H77 motherboard with no heat sinks for the chipset? The CPU will have a fan in both cases, of course. tl;dr When it comes to CPU/GPU performance and HDD r/w, is the Intel H77 chipset slower than the Z77? I don't care about overclocking or multiple GPUs, and for the processor, I'm set on Ivy Bridge i7-3770.

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  • Alternatives to Splunk?

    - by MichaelGG
    I'm pretty impressed with Splunk, especially version 4. Pretty graphs, alerting (Enterprise only), and fast, accurate, searching. It's a great product. However, the cost just way too high to consider for full production use for our company. All we really need is to be able to index different logs in a central place, and have reasonable searching on that. Having alerts based on a saved search is also really nice. We don't really go beyond that. In fact, our biggest usage has been in deploying new applications. Everything gets logged via log4net to either the Event log on Windows or a text file on Linux. Splunk makes it pretty easy to quickly search across those to make sure all the parts of the app are working ok -- that's saved us tons of time versus hunting down individual logging sources. What alternatives exist in this market? I have a sinking feeling Splunk's pricing is so high because they have the best product by far, and they know it. We want the server to run on Windows. I'd be open to a split model, using one product for general logs (collect via syslog/Snare), and a dedicated product for our custom apps (like Log4Net Dashboard). Would using a simple syslog server such as Kiwi, sent to SQL Server (perhaps with fulltext enabled) work? I'd hope the cost should be well under 5 figures, USD. (And yes, I know, we're cheap. We're a startup with little money, and BizSpark takes care of all our MS licensing.) Edit: I should add, we have about 10 physical servers, 20 VMs, and a couple firewalls and switches. 90% is Windows.

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  • Black Screen and System Hang - Possibly CPU overheating

    - by Mahesh
    I have this old computer - P4 2.0ghz, 1.2GB RAM and onboard graphics(no external card), 80GBHDD. It has xubuntu installed on it and it regularly hangs when it takes more system resources for say like graphical programs, too many tabs on firefox etc. It just either hangs the system or shows black screen. Tested if it was issue of HD but it wasn't because i have used linux livecd and problem is still the same even if I have removed the HD. I have also tested with USB linux (puppy linux and ubuntu linux on 8gb drives). Tested windows XP as well on this HD and results are the same. Tested another HD on this machine, results are still the same with it. System hangs or goes black screen and requires restart. I thought later it could be thermal heat issue and then applied thermal paste on heatsink but still it fails to work for me. It continues to show symptoms. Another thing which was yet to be tested is changing of CPU fan which was not done because I have not found any fan for old pentium 4 machine in the market. I have to hit online stores (but i am in india and it's hard to find it in online shops which can deliver it to me). So far I don't see this as HD or Monitor or OS issue because I have tested with other HD and results are the same. So it could be either CPU fan or motherboard? What could be possible issue with the hardware?

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  • Ubuntu 12.04 cloud edition on Amazon - Apache2 - /etc

    - by jdog
    I have setup a web server on Amazon with 3 Virtual hosts. For some reason I can't get any of the sites going on it, they all show a 404 error. /var/log/apache2/error.log shows "File does not exist: /etc/apache2/htdocs" I have checked: a2ensite all my virtual hosts actually checked softlinks in sites-enabled access rights in /var/www to 777, in case user is not www-data grep -r htdocs /etc/apache2 (returns nothing) ports.conf has NameVirtualHost directive exactly matching Virtual Hosts What else could this be? ports.conf # If you just change the port or add more ports here, you will likely also # have to change the VirtualHost statement in # /etc/apache2/sites-enabled/000-default # This is also true if you have upgraded from before 2.2.9-3 (i.e. from # Debian etch). See /usr/share/doc/apache2.2-common/NEWS.Debian.gz and # README.Debian.gz NameVirtualHost 107.20.169.163:80 Listen 80 <IfModule mod_ssl.c> # If you add NameVirtualHost *:443 here, you will also have to change # the VirtualHost statement in /etc/apache2/sites-available/default-ssl # to <VirtualHost *:443> # Server Name Indication for SSL named virtual hosts is currently not # supported by MSIE on Windows XP. Listen 443 </IfModule> <IfModule mod_gnutls.c> Listen 443 </IfModule> sites-available/www.seleconlight.com <VirtualHost 107.20.169.163:80> ServerName www.seleconlight.com DocumentRoot /var/www/www.seleconlight.com CustomLog /var/log/apache2/www.seleconlight.com-access.log combined ErrorLog /var/log/apache2/www.seleconlight.com-error.log </VirtualHost>

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  • Outlook express 6 crashes after "synchonizing account"

    - by Ira Baxter
    [EDIT: Revised OE version to match reality] I use Outlook Express (OE) 6.00.3790.3959 to read newsgroups. I regularly scan through about 100 newsgroups. When I select a newsgroup, and then select "synchronize account", OE goes through the newsgroups visibly updating the unread message count. It gets apparantly to the end, and then comes back to check for Watched Conversations, of which I typically have a few scattered across the newsgroups. It invariably crashes with some kind of access fault. A dialog box pops up saying "Want to debug with "; I invariable say No, and the process goes away. I restart OE, select the newsgroup, and skip "Synchronize Account"; I am able to read news and everything seems just fine. This behavior has occurred since I set it up several months ago. Is the newsgroups database screwed up? Can I run something like CHKDSK or Outlooks PST repair to fix things up? Any suggestions as to what to do? The system is Windows XP 64 system installed in January 2008. I accept Windows Updates and install them on a regular basis. I use Outlook (not OE) for regular email an it behaves perfectly normally.

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  • "postgres blocked for more than 120 seconds" - is my db still consistent?

    - by nn4l
    I am using an iscsi volume on an Open-E storage system for several virtual machines running on a XenServer host. Occasionally, when there is a very high disk I/O load on the virtual machines (and therefore also on the storage system), I got this error message on the vm consoles: [2594520.161701] INFO: task kjournald:117 blocked for more than 120 seconds. [2594520.161787] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [2594520.162194] INFO: task flush-202:0:229 blocked for more than 120 seconds. [2594520.162274] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [2594520.162801] INFO: task postgres:1567 blocked for more than 120 seconds. [2594520.162882] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. I understand this error message is caused by the kernel to inform that these processes haven't been run for 120 seconds, most likely because a disk access to the storage system has not yet been processed. But what is the effect on the processes. For example, will the postgres process eventually write its data when the storage system is idle again after a few minutes, so that all data is still consistent? Or will it abort the write, leaving some tables in an inconsistent state? I certainly expect that the former should be the case - if the disk access is slow, postgres (or any other affected process) should just wait as long as it takes. I can live with the application hanging for a few minutes. But if there is a chance for data corruption then any of these errors is really bad news. Please advise what to do here.

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  • How can a Linux Administrator improve their shell scripting and automation skills?

    - by ewwhite
    In my organization, I work with a group of NOC staff, budding junior engineers and a handful of senior engineers; all with a focus on Linux. One interesting step in the way the company grows talent is that there's a path from the NOC to the senior engineering ranks. Viewing the talent pool as a relative newcomer, I see that there's a split in the skill sets that tends to grow over time... There are engineers who know one or several particular technologies well and are constantly immersed... e.g. MySQL, firewalls, SAN storage, load balancers... There are others who are generalists and can navigate multiple technologies. All learn enough Linux (commands, processes) to do what they need and use on a daily basis. A differentiating factor between some of the staff is how well they embrace scripting, automation and configuration management methodologies. For instance, we have two engineers who do the bulk of Amazon AWS CloudFormation work, and another who handles most of the Puppet infrastructure. Perhaps a quarter of the engineers are adept at BASH shell scripting. Looking at this in the context of the incredibly high demand for DevOps skills in the job market, I'm curious how other organizations foster the development of these skills and grow their internal talent. Scripting doesn't seem like a particularly-teachable concept. How does a sysadmin improve their shell scripting? Is there still a place for engineers who do not/cannot keep up in the DevOps paradigm? Are we simply to assume that some people will be left behind as these technologies evolve? Is that okay?

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  • How do I get a subdomain on Xampp Apache @ localhost?

    - by jasondavis
    **UPDATE- I got it working now, I just had to change to The port number is important here. I just modified my windows HOST file @ C:\Windows\System32\drivers\etc and added this to the end of it 127.0.0.1 images.localhost 127.0.0.1 w-w-w.friendproject-.com 127.0.0.1 friendproject.-com Then I modified my httpd-vhosts.conf file on Apache under Xampp @ C:\webserver\apache\conf\extra Under the part where it shows examples for adding virtualhost I added this code below: NameVirtualHost *:80 <VirtualHost *:80> DocumentRoot /htdocs/images/ ServerName images.localhost </VirtualHost> <VirtualHost *:80> DocumentRoot /htdocs/ ServerName friendproject.com/ </VirtualHost> <VirtualHost *:80> DocumentRoot /htdocs/ ServerName w-ww-.friendproject.c-om/ </VirtualHost> Now the problem is when I go to any of the newly added domains in the browser I get this error below and even worse news is I now get this error even when going to http://localhost/ which worked fine before doing this I realize I can change everything back but I really need to at least get htt-p://im-ages.localhost to work. What do I do? Access forbidden! You don't have permission to access the requested directory. There is either no index document or the directory is read-protected. If you think this is a server error, please contact the webmaster . Error 403 localhost 07/25/09 21:20:14 Apache/2.2.11 (Win32) DAV/2 mod_ssl/2.2.11 OpenSSL/0.9.8i PHP/5.2.9

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  • Are HDMI to VGA Adapters Really Device-Specific?

    - by allquixotic
    There are a lot of devices on the market right now (especially mobile devices) with a Micro-HDMI or Mini-HDMI port and no VGA or D-Sub output. Most manufacturers of said devices sell a cable that looks something like this: I have yet to find a cable like this that claims to work on a wide array of devices. In general, these cables claim to work with one specific device only. The way these cables work, I think, is that analog VGA signals are sent from the HDMI port on the device. This should work for devices that have special hardware on the motherboard/GPU capable of driving this. Is it the case that these cables have to be custom designed for each device? Or, is it rather that any device which possesses this special "signaling of analog VGA over the HDMI port" can be made to work with a cable that is physically compatible (i.e. the HDMI end plugs into the device and the VGA end accepts a VGA monitor cable)? Note that I am not looking for a product recommendation, just a conceptual clarification on what exactly these devices are doing. Also, a few remarks: The cables like the one depicted here are not digital to analog converters. I know about these: they are expensive, and they are the ONLY solution if your device only outputs a digital signal and is incapable of driving analog VGA over the HDMI port. The cables like the one depicted here are not straight crossover cables from VGA to HDMI, either. The crossover cables are designed to send a digital HDMI signal over the VGA port's wires; that is, the wire protocol is HDMI (digital) but the physical pinout is the same as VGA, even though nothing analog is happening. Once again, this is not the behavior that, I believe, the devices which I'm talking about in this question are doing. The cabling and devices that this question is about transmit the analog VGA data over the HDMI port (the HDMI port is in the device outputting the data, and the VGA side is the monitor/projector).

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  • How do I export address book from N97

    - by mplungjan
    Hi, I need to copy my numbers from my private Nokia to my office BB. I have not found a way to export my phone numbers from ovi or elsewhere. On Mac iSync stopped working with snow leopard and OVI on windows does not export. I do not mind using a windows suggestion. I lost a description on how to use the ovi backup files in another program. What I have done so far terminal: sudo open -a iSync.app - it launched but iSync said "this device is not supported by iSync" went here http://europe.nokia.com/support/product-support/isync/compatibility-and-download found a plugin (I am sure that was not there a while ago :| ) Checked software version 22.0.110 installed plugin Ran iSync which found and installed my N97 device successfully. synced. It stopped with The connection was lost while talking to the phone. http://discussions.europe.nokia.com/t5/Nseries-and-S60-Smartphones/N97-iSync-Multimedia-Transfer-Modem/m-p/568560 no news since Jan 2010. Tried to download and install http://best-vcard.en.softonic.com/symbian but the installer fails :( I simply do not understand why Nokia is giving us such a hard time. I would not have considered switching from Nokia if Mac had been better supported. It is so frustrating that they just seem not to care losing Nokia fanbois like me - especially since I am this outspoken on the net and what i say on popular forums gets indexed by google fast. I am very close to just go iPhone here. Hope someone has Nokia's ears UPDATE: I Downloaded NbuExplorer from sourceforge. It will extract everything from an OVI backup into VCF, VCS and VMG files. Very useful software and free.

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  • Why can`t we treat SSL Certs like Pgp keys instead of trusting CAs?

    - by yarun can
    I am dumb and stupid and I do not know all the technical aspects of SSL and server/client side implications and implementations. However I understand them good enough from user point of view to use SSL and encyrption daily. I was thinking that how silly it is to trust some unknown/known CAs when it comes to our our certificates for our servers. There had been many cases of misconduct, misuse, compromises and theft of certificates/ca keys from those places. On top of those known issues we also have to pay these guys regularly. I am wondering why can not we use/treat web server certificates like we use our pgp keys? So I sign a SSL certificate and send to a central server. And then each user accessing my site checks the validity and the keys from some central server (like pgp key servers). Is this a stupid idea? If so what could be a better idea than current system of issuing valid certificates. I am looking for a better than more secure idea. Naturally this is not a solution to an existing problem, rather it will be a hypothetical solution for some future implementation of a currently messed up web of trust on the internet due to recent news about NSA and their criminal buddies around the world. thanks

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  • How to create custom content for nginx error 502 page, keep origin url on browser

    - by user123862
    i'm trying to get custom language and message for nginx error page but keep url on browser.. not success for eg: i go to url : xaluan.com/aaa/bbb.html on the time server down.. nginx will show error 502. with the same url but custom message as my language. test 1. I created a custom page at /usr/local/nginx/html/205.html as following config but it show on web site when error is default nginx error at domain.com/50.html ( the content of webpage not same as i created) error_page 502 /502.html; location = /502.html { root /usr/local/nginx/html; } test 2. Then i create same page at my www domain folder /home/xaluano/public_html/502.html but this keep redirect me to root domain.com/502.html the content now same as i created. but.. the url still not as i need error_page 502 /502.html; location = /502.html { root /home/xaluano/public_html; internal; } EDIT UPDATE for more detail 10/06/2012 please download my nginx config http://pastebin.com/7iLD6WQq and vhost config following: http://pastebin.com/ZZ91KiY6 == the case test.. if apache httpd service stop: #service httpd stop then open browser go to: xaluan.com/modules.php?name=News&file=article&sid=123456 I will see the 502 error with the same url on browser address == Custome error page I need the config which help when apache fail .. will show the custom message tell user wail for 1 minute for service back then refress current page with same url ( refresh I can do easy by javascript ), Nginx dosent change url so java-script can work out. any help will be great.. thank in advance

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  • Bare-metal virtualisation for the desktop

    - by Andrew Taylor
    Hi, Does anyone have any knowledge about bare-metal virtualisation products? I'm interested in building a new desktop machine for home, I've been looking at the Intel Quad Core processors and I'd like to put 8GB of RAM in there, but, it got me thinking about making the most out of the available resources. I thought if I could get a good 64bit machine, put some bare-metal virtualisation on, then have a primary system, I'd also be able to bring up some extra virtualised systems as and when I needed. I know most of the bare metal systems are designed for the server market, but, is there anything out there that works well for a desktop. What are the caveats? I presume I won't be able to make the most out of any video cards I could buy, what about just getting a decent screen resolution, will this be a problem? I run a single 24" screen. What about DVD/CD writing, is this possible? I'd like to re-rip my CD collection, I was hoping the quad 64Bit goodness would help me out with the encoding. I currently use a Mac and couldn't go back to windows so that leaves Linux, I was thinking a primary OS of ubuntu. Does this make a difference? Thanks Andrew

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  • Trying to understand Wireless N vs Wireless AC

    - by EGHDK
    Whenever a new wireless standard gets approved you expect faster speeds and longer range. From everything that I've read about it, it seems that AC will only transfer over the 5GHz band and up to 3Gbps. Studying the new AC routers on the market, it seems that they will transfer over 5GHz and 2.4GHz. And 5GHz will only transfer at 1.3Gbps. Which isn't what AC is supposed to be. I know there is a difference between what the standard actually says, and what products will actually do, but is there any reason for this? Is there any other main differences between AC and N? I've heard people discussing AC and saying that it's finally "fixing" what N was supposed to fix... what do they mean by that? Any security benefits? I have seen this image online: Will AC really do that? Will that require an AC network card in my laptop for that to actually happen? Lastly, will the router only be able to communicate with AC devices if I have beamforming technology on? I know it's a ton of questions, but most articles online seem to be outdated, and don't provide too much reliability.

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  • Recommendations for colocation in the US

    - by Emil
    Hello serverfault I work for a European media company and we are currently looking for colocation in the US. I know the European market quite well unfortunately that is not the case for the US. I'm hoping for you guys to help me out a bit with a few questions, it would be much appreciated! I am looking for a data center that can deliver a high level of availability (tier 3 or better). The installation will be fairly large so capacity is important. Good internet connectivity/carrier presence. However most important is good customer support, skilled dedicated and responsive technical staff, since we won't have tech staff close by. I'm looking for a small and fast moving company that target internet businesses rather than big old enterprise hosting. What locations should we go for given that we want to reach all of the US from a single site and still maintain decent latency? (do we need east and west coast?) Where are the main internet hubs and should you try and get as close as possible? Are there any good online resources I should look at? Where do the large scale internet/media services colocate? Lastly I would be very happy to get some actual recommendations for companies to talk to P.S I'm happy to return the favor if anyone has question regarding data centers and colocation in Europe.

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  • Restore passwd for root on a server

    - by s.mihai
    Hello,       I have a DVR server with linux embeded. It has some telnet functions but i don't have the password for it (the chinese manufacturer refuses to give me the password). I did get a upgrade folder from them and found a passwd file inside.       So i assume that when i upgrade the firmware the password in that file will be used.       Now i am trying to modify the file so taht i can insert a password i already know.       The problem is that i don't know how to create the password hash from what i figured the password hash is $1$1/lfbDKX$Hmd.FqzB8IZEohPesYi961       The file is named rom.ko and i found a command telnetd /mnt/yaffs/web/boa -c /mnt/yaffs/web & /bin/cp -f /mnt/yaffs/rom.ko /etc/shadow in a script file so i assume this is the right way.       Can you help me reconstruct a password that i know already? Tell me how or make one for me :) ?... passwd file: root:$1$1/lfbDKX$Hmd.FqzB8IZEohPesYi961:0:0:99999:7:-1:-1:33637592 bin::10897:0:99999:7::: daemon::10897:0:99999:7::: adm::10897:0:99999:7::: lp::10897:0:99999:7::: sync::10897:0:99999:7::: shutdown::10897:0:99999:7::: halt::10897:0:99999:7::: mail::10897:0:99999:7::: news::10897:0:99999:7::: uucp::10897:0:99999:7::: operator::10897:0:99999:7::: games::10897:0:99999:7::: gopher::10897:0:99999:7::: ftp::10897:0:99999:7::: nobody::10897:0:99999:7::: next::11702:0:99999:7:::

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  • Google Chrome sync: limit for bookmarks & extensions?

    - by Lyubomyr Shaydariv
    Actually, Chrome is my favorite web-browser, and one of its most powerful features is synchronizing the actual data into a Google account. For the last years I gained a lot of bookmarks and from time to time browse the extensions gallery to find new valuable ones. Really, synchronizing between my work and home PC's freed me from manual sync. And for the recent months I experience strange glitches. I guess it may be caused by a lot of stored bookmarks (potentially about 3K [in estimate], but please don't ask why :)) and extensions (about 130 installed but only 10-15 daily used). I can mention the following strange things: Recently added bookmarks sometimes are not synchronized (e.g. I put a bookmark at work, but it's not guaranteed I can see it that evening), despite about:sync indicates a good sync process. Sometimes recently modified bookmarks appear in either (let's call) last at home or last at work bookmark folders. Sometimes bookmarks are not synced at all. (Moreover, Chromium versions may even crash) Extensions are not synced now at all. Perhaps, there's another reason, but Google Mail Checker and Google Reader Notifier do not show indicators of incoming e-mails and news. ... I'm not sure but it looks like I might exceed Chrome internal sync limits... Is it right? Are there any workarounds, or should I make a massive bookmarks/extensions cleanup (I really don't want it :()? I mostly use Google Chrome Canary builds, and the my current one is 12.0.732.0. Thanks in advance. Update #1 (2001-04-19): I removed about 50 extensions that I'm not interested in (or that I consider as trash), and gained pretty some results: The extensions count is below 100 (exactly 97); The chrome://extensions page does not get slow (or even frozen) any more on enabling/disabling/uninstalling extensions; The extensions are seem to be synchronized now again.

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  • Is there a Windows 7 compatible IPSec VPN client that allows protocol and port specific rules?

    - by Sani Huttunen
    As the title says, I need to find a IPSec VPN client for Windows 7. On XP and Vista we've used SafeNet SoftRemote in which you can set up rules for specific protocols and ports. But SoftRemote isn't compatible with Windows 7. 172.xxx.xxx.1 TCP 1433 172.xxx.xxx.2 TCP 1433 172.xxx.xxx.10 ALL ... Since the VPN gateway is configured this way the client must mirror these settings. I've tried TheGreenBow, NCP Secure Entry, Cisco VPN Client and Shrew Soft VPN but none of these allows you to configure by protocol and port. Does anyone have any other suggestions? EDIT: Forgot to mention that agressive mode is also a requirement. --UPDATE-- I've got some news... I've managed to get SoftRemote to work on Windows 7 x64 through Windows XP Mode. After scouring all corners of the Internet for idéas I had enough information to construct a working solution. This solution will probably benefit other clients as well! You'll find a post here with detailed instructions of how I went about.

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  • Macbook Pro - 15" with i7 processor - Any problems with heat?

    - by webworm
    You may have already heard about the review done by the folks at PC Authority in Australia, where they had an i7 MacBook Pro that got up to 100 degrees Celsius during benchmarking. Here is the URL in case you have not read it. http://www.pcauthority.com.au/News/172791,macbook-pro-helps-core-i7-hit-100-degrees.aspx In any case, I was considering purchasing a 15" Macbook Pro with the i7 processor and the NVIDIA GeForce GT330M with 512 video memory. Having read how hot the computer got I started to become hesitant about purchasing. My main concern is long term damage to the computer due to excessive heat. I plan to use the MacBook Pro as a development machine where I will be running Windows 7 within VMWare Fusion or Virtual Box. Within the VM I will be running IIS, SQL Server, Visual Studio and SharePoint Server. Hence why I would like to have the power of the i7 processor. That is why I wanted to check with actually owners of the MacBooks with the i7 processor and see what their experiences have been. Have you noticed excessive heat? How does your Macbook handle process intensive apps over long periods of time? Thank you!

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  • Internal/External Moodle - DNS

    - by Chief17
    Network diagram: I have a moodle (a VLE) setup that I want to be internally and externally accessible. The green route on the diagram below is the route I would like the traffic to take when the user is inside the LAN, and the red route is seemingly what it does take. The website has a domain name (like most websites do). From the User PC, if I ping the domain name, I get the internal IP of the webserver (because of a hosts file entry), if I nslookup the domain name I also get the internal IP of the webserver (because of an A record on my DNS server). Running the same two commands on the webserver gives me the webservers external IP. (going well so far) If I use PHPs gethostbyname() on the moodle website and use domain name as a parameter (getting php/apache to resolve the hostname) it returns the exernal IP of the webserver (good news, DNS seems to be doing what I want it to). All things so far seem to be going well. The only thing that is confusing me and preventing the moodle single sign on from working is the fact that if I get moodle to show my IP address, it says that it is an external one (outside my NATting firewall) when it should show an internal IP. This is the issue, any ideas on how to go about resolving this? Any ideas on tests I can perform (I have also tried a tracert and the request goes directly to the webserver), anything? Thanks all!

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  • Is UPS worthwhile for home equipment?

    - by Jon Skeet
    Over the years, I've had to throw away a quite a few bits of computing equipment (and the like): Several ADSL routers with odd symptoms (losing wireless connections, losing wired connections, DHCP failures, DNS symptoms etc) Two PVRs spontaneously rebooting and corrupting themselves (despite the best efforts of the community to diagnose and help) One external hard disk still claiming to function, but corrupting data One hard disk as part of a NAS raid array "going bad" (as far as the NAS was concerned) (This is in addition to various laptops and printers dying in ways unrelated to this question.) Obviously it'll be impossible to tell for sure from such a small amount of information, but might these be related to power issues? I don't currently have a UPS for any of this equipment. Everything on surge-protected gang sockets, but there's nothing to smooth a power cut. Is home UPS really viable and useful? I know there are some reasonably cheap UPSes on the market, but I don't know how useful they really are. I'm not interested in keeping my home network actually running during a power cut, but I'd like it to power down a bit more gracefully if the current situation is putting my hardware in jeopardy.

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  • Options for small windows network setup without dedicated server?

    - by Mitch
    I'm very weak on networking and hope someone can point me in the right direction: I have written some windows client/server software which incorporates a database which is located on a windows server. I have a test installation running at a customer's office where the server has a static IP address. In this case its easy for the clients to access the database because of the fixed IP address. Also, customers with network servers generally have specialist support staff to set up my software, so its not such a problem for me. However I also need to offer the software to customers who have small offices with less than 10 PCs and no dedicated network server. In this case I want the customer to be able to nominate one PC as the database "server" and install my software and have the clients access it. But in this situation I believe the "server" PC may not have a dedicated IP address. Q1: What is the best way to set this up simply and make it work? Can I reliably reference the "server" by using its name, or is there a way to assign dummy fixed IP addresses? Ideally this needs to be workable on small networks running a mixture of XP/Vista/Windows7 as my target market may well have mixed OSes etc. I guess this would be akin to home networking? Many thanks Mitch

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  • a VPS mail server

    - by microspino
    Hello I'm trying to substitute citadel on my Virtual Private Server with something more simple. I dislike their documentation and the webmail client. I don't need any groupware feature. I need only an MTA with a nice looking web interface, SPAM and VIRUS check. I recently found the lamson project from Zed Shaw. Is that production ready? Do you had any real and good experience with It? On the latest-news page I see that the last release dates december 2009. Sorry for my lack of knowledge, I'm really new to mail servers but I have to find a solution to manage sending and receiving mail on my VPS. I would accept also to build my VPS email server using a linux system like exim, postfix or whatever but I have really small needs and they will not grow in at least a year and i will be the only one user. I'm searching for something that I could build and manage easily, as I'm a novice linux sysadmin. Having also some good documentation or at least a robust step by step guide would be a plus.

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  • Designing a software based load balancer

    - by Kishore pandey
    Hello to all Server fault users, I am new to this website but have constantly been using the mother website, stackover flow. Well to begin with, i would like to design a load balancer for the organization i am working for. As i am very new to this whole, idea about load balancing and networks. I am finding it very difficult to start my project. I did a lot of research on already existing load balancer and found some(HAPROXY,NGINX) that could solve my problems, but the point is, I am still in a dilemma if they could answer the following requirements of mine: The client and server in my architecture are distributed. The load balancer should take care of the firewall. LB server should balance the load among all servers present in WWW cloud. The LB server should have some sort of configuration file, with the help of which it is possible to configure the servers. Heart beat: With the help of which it would be possible to check if any server is down, if any server is down the request should be passed to some other server. Various load balancing algorithms of the incoming requests. Easy error handling. It should be fairly possible to prioritize the incoming requests. Is there any already available load balncer solution on the market that could satisfy these requirements? If not is there any base code available with the help of which i could develop my own load balncer. If not where should i start from scratch? I am practically new to everything. Any help from a load balancer expert is very much appreciated. Thanx a ton in advance. Cheers and regards. Kishore

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  • Problem routing between directly connected Subnets w/ ASA-5510

    - by Zephyr Pellerin
    This is an issue I've been struggling with for quite some time, with a seemingly simple answer (Aren't all IT problems?). And that is the problem of passing traffic between two directly connected subnets with an ASA While I'm aware that best practice is to have Internet - Firewall - Router, in many cases this isn't possible. For example, In have an ASA with two interfaces, named OutsideNetwork (10.19.200.3/24) and InternalNetwork (10.19.4.254/24). You'd expect Outside to be able to get to, say, 10.19.4.1, or at LEAST 10.19.4.254, but pinging the interface gives only bad news. Result of the command: "ping OutsideNetwork 10.19.4.254" Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.19.4.254, timeout is 2 seconds: ????? Success rate is 0 percent (0/5) Naturally, you'd assume that you could add a static route, to no avail. [ERROR] route Outsidenetwork 10.19.4.0 255.255.255.0 10.19.4.254 1 Cannot add route, connected route exists At this point, you might gander if its a NAT or Access list problem. access-list Outsidenetwork_access_in extended permit ip any any access-list Internalnetwork_access_in extended permit ip any any There is no dynamic nat (or static nat for that matter), and Unnatted traffic is permitted. When I try pinging the above address (10.19.4.254 from Outsidenetwork), I get this error message from level 0 logging (debugging). Routing failed to locate next hop for icmp from NP Identity Ifc:10.19.200.3/0 to Outsidenetwork:10.19.4.1/0 This led me to set same-security traffic permit, and assigned the same, lesser and greater security numbers between the two interfaces. Am I overlooking something obvious? Is there a command to set static routes that are classified higher than connected routes?

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