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• Barracuda spam filter alternative - virtualization/appliance friendly?

  - by ewwhite

  I've sold and deployed Barracuda spam and web filters for years. I've always thought that the functionality was good (Barracuda Central, easy interface, effective filtering), but the hardware on the entry to midrange units is a weak point. They have single power supplies, no RAID and limited monitoring support. Personally, I think Barracuda would make a killing selling their software as a VMWare appliance, but I'm looking for something similar that I can deploy as a consultant, but will be easy for customers to manage. It should have support for server-grade hardware or the ability to be deployed as a virtual machine. Is there anything out there that's close?

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• Linux: Why to change inode size?

  - by FractalizeR

  Hello. Tune2fs allows to change inode size from default 128 bytes to almost anything (but it should be power of two). What can the the reasons of changing default inode size? Here http://kbase.redhat.com/faq/docs/DOC-7433 is written, that this can be done to be able to store ACL attributes inside inodes. What else can be stored inside inode? May be some other attributes? Or anything else? Is there any reason to increase inode size on modern high-capacity drives (2TB and more)?

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• How to set up a software VPN when moving a server to the cloud

  - by Neal L

  I work in a small company with one office in Dallas and another in Los Angeles. We run a Fedora server at our Dallas location and use a Linksys RV042 at each location to create a VPN connection between the sites. Every time the power or internet goes out in Dallas, our server is inaccessible so the entire company goes down. Because of this, we would like to use a shared server in the cloud (something like Linode) to avoid this problem. As a relative novice to VPN configurations, I would like to know if it is possible to set up a software VPN on the cloud server and connect our local networks in Dallas and LA to that VPN. I've read about openvpn and ssh vpns, but I don't know it is the best option. Could anyone with some experience point me in the right direction on the right combination of software VPN and hardware for this? We're open to new hardware to make this happen. Thanks!

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• WHEA_UNCORRECTABLE_ERROR BSOD - what is wrong?

  - by Arcane

  Hello I have a problem with my PC getting the WHEA_UNCORRECTABLE_ERROR bsod. It is a few months old pc. I am not overclocking or changing anything in bios, but sometimes (this is my third time) I get this bsod out of nowhere. This last time I was just watching some stream on twitch when the pc suddenly crashed. I have everything up to date in windows update and every other driver as well. Everything in Open hardware Monitor seems ok. Right now as of 10 min after the crash, the CPU temp is at 38°C, fans are at 1400RPM I am using Windows 8.1 Pro 64b. Here are my spec: Intel i5-4570 CPU @ 3.20GHz, Kingston HyperX 8GB DDR3 1600 XMP, GeForce GTX 660 with 340.52 drivers, Corsair VS450 power supply, Gigabyte GA-H87-HD3 you can see the BSOD dump here: https://www.dropbox.com/s/88i1q2nnqnpzux1/082514-29656-01.dmp?dl=0 Can anybody tell me what is wrong?

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• How to tell X.org to reload input device module? (Working around suspend-to-ram crash on Acer laptop

  - by Vi

  When X.org boots up, Synaptics touchpad works well. But when I remove the module it falls back to /dev/input/mice and don't use normal driver even when touchpad is available again. Xorg.0.log: ... (II) XINPUT: Adding extended input device "Synaptics Touchpad" (type: TOUCHPAD) (--) Synaptics Touchpad: touchpad found # { rmmod psmouse && echo mem /sys/power/state && modprobe psmouse; } (WW) : No Device specified, looking for one... (II) : Setting Device option to "/dev/input/mice" ... How to tell X.org to try it's InputDevice again (without restarting X server)? P.S. rmmod psmouse is needed to prevent crashing of Acer Extensa 5220 when resuming from suspend-to-ram. Update: Found answer myself: Doing xinput set-int-prop "Synaptics Touchpad" "Device Enabled" 8 1 after reloading the kernel module reloads touchpad. Now suspend-to-ram works OK.

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• Is this a common/bug on this PPPoE setting for Cisco ASA 5505?

  - by DCAlliances

  We have to change the way the firewall setup due to we've changed the internet provider. The way we setup we have ADSL modem and we have to do a full bridge mode and the firewall configuration has to change from Static IP to Use PPPoE option on Outside interface with PPPoE username and password, CHAP authentication, WAN IP and WAN subnet mask. [See the attachment] It's been working ok with the use of PPPoE option however the issue is that if we un-plug the power cable of the firewall. This "Outside" interface turned to blank - NO WAN IP, PPPoE username and password. So basically, we have to retype this information again. Is this common or a bug? Any ideas? Thanks

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• With the Supermicro Embeded BMC, is it possible to connect to Serial Over Lan via SSH?

  - by Stefan Lasiewski

  I have several dozen Supermicro servers which use the Supermicro Embedded BMC. The documentation on that page suggests that I can access the Serial Over LAN (Serial Console) over SSH: SMASH and CLP support SSH based SOL Power control of the server But when I ssh into my BMC, all I see is a Busybox implementation, with no clear ability to connect to the SOL: # ssh 192.168.100.100 -l ADMIN [email protected]'s password: BusyBox v1.1.3 (2011.02.12-01:48+0000) Built-in shell (ash) Enter 'help' for a list of built-in commands. # show -sh: show: not found # smash -sh: smash: not found Supermicro support is giving me inconsistent answers. Is it possible to connect to the SOL via the SSH interface?

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• How to tell X.org to reload input device module?

  - by Vi

  When X.org boots up, Synaptics touchpad works well. But when I remove the module it falls back to /dev/input/mice and don't use normal driver even when touchpad is available again. Xorg.0.log: ... (II) XINPUT: Adding extended input device "Synaptics Touchpad" (type: TOUCHPAD) (--) Synaptics Touchpad: touchpad found # { rmmod psmouse && echo mem /sys/power/state && modprobe psmouse; } (WW) : No Device specified, looking for one... (II) : Setting Device option to "/dev/input/mice" ... How to tell X.org to try it's InputDevice again (without restarting X server)? P.S. rmmod psmouse is needed to prevent crashing of Acer Extensa 5220 when resuming from suspend-to-ram. Update: Found answer myself: Doing xinput set-int-prop "Synaptics Touchpad" "Device Enabled" 8 1 after reloading the kernel module reloads touchpad. Now suspend-to-ram works OK.

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• graphics-card makes sound-card produce a buzzing sound

  - by Markus von Broady

  Recently I bought a new GPU: GeForce GTX 550 Ti, and after installing it I get a strange buzzing sound. It's not always there, just sometimes (mostly when I open some game, but sometimes also in browsers etc.). It's not a capacitor or a fan, as unplugging speakers from sound-card makes the 'bzzzzzzz' go away. However, muting windows doesn't mute this sound. I'm pretty sure it is fault of the new GPU, but how is this happening and can I fix it? Can it be a low power supply? I thought of buying a stronger unit, but as everything works, and computer doesn't shut down, I hesitate.

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• How to get rid of resume information on ubuntu 9.10 ("karmic")

  - by Glen S. Dalton

  I am on an old laptop with Ubuntu 9.10 installed. I once tried to not shutdown but go into one of the resume states. On the next power on, resume did not work, but there was an error message during boot asking me for the resume image (which I do not have or know of) and when I press enter the normal boot happens. But this error pops up on every boot now. How can I get back the behaviour from before? Why does the boot process guess there would be a resume image and can I delete this information? I would like to post here the error messages from the boot proces, but they are not in /var/log/syslog, where else can they be?

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• Cablemodem frequent connection loss

  - by LVDave

  I have a Linksys BEFCMU10 cablemodem and a WRT54GL router with Tomato 1.27 firmware on Cox cable. My question is this: I get what seems to be random disconnects from the internet, where the cable modem lights are still normal, but I can connect nowhere, either via a url or an ip address. At the same time these disconnects are happening, I can go to the router's Tomato management webpage, and release/renew my external IP address from Cox's DHCP server. I've had Cox look at the signal levels on the cable modem, and they say they look fine. What brings back the modem, for sometimes as long as 17 days, is several power-cycles of the modem. I don't understand the underlying cable modem technology too well, but I do know that if I'm able to release/renew the DHCP-provided WAN address, I'd expect that the cable modem was working ok... Anybody have any ideas??

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• what firefall linux distro applicance could track internet usage per device in my home?

  - by GregH

  Hello, Anyone know of a community edition/open source/free firewall/gateway software product that I could install onto an old PC to act as my firewall/gateway/proxy etc, BUT for which it has the power to track internet usage per device in my home. So: a) Mandatory - Track internet usage for devices on my home network on a per device basis (e.g. various PCs/Xbox etc) b) Mandatory - Report/graph would would give a breakdown of internet usage, per device (e.g. IP address), per day. c) Desirable - as in b) above but per hour d) Desirable - realtime graph (e.g. 5 minute measurement intervals or something) that shows current internet usage per device e) Mandatory - Handles all internal<=internet requests for all protocols (e.g. HTTP, HTTPS, xbox etc) f) Mandatory - No explicit settings in clients required - i.e. Transparent Monitoring concept (for both HTTP and non-HTTP traffic like xbox, skype etc) g) Mandatory - easy "appliance" like installation onto a dedicated low spec PC thanks in advance

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• what firefall linux distro applicance could track internet usage per device in my home?

  - by GregH

  Hello, Anyone know of a community edition/open source/free firewall/gateway software product that I could install onto an old PC to act as my firewall/gateway/proxy etc, BUT for which it has the power to track internet usage per device in my home. So: a) Mandatory - Track internet usage for devices on my home network on a per device basis (e.g. various PCs/Xbox etc) b) Mandatory - Report/graph would would give a breakdown of internet usage, per device (e.g. IP address), per day. c) Desirable - as in b) above but per hour d) Desirable - realtime graph (e.g. 5 minute measurement intervals or something) that shows current internet usage per device e) Mandatory - Handles all internal<=internet requests for all protocols (e.g. HTTP, HTTPS, xbox etc) f) Mandatory - No explicit settings in clients required - i.e. Transparent Monitoring concept (for both HTTP and non-HTTP traffic like xbox, skype etc) g) Mandatory - easy "appliance" like installation onto a dedicated low spec PC thanks in advance

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• Any reason to prefer video adapter with two DVI ports versus one DVI/one VGA for DVI/VGA optional dual monitors?

  - by Bryce Thomas

  I am looking to buy a new video card to power two identical monitors. The monitors came with both DVI and VGA cables, so I am able to use either. My current video card has two DVI ports on the back, so I have both monitors connected via DVI at present. I have noticed that many modern video cards have a DVI/VGA/HDMI port trio and that cards with two DVI ports seem somewhat more scarce. Essentially, I have more options available to me for purchasing cards with a DVI/VGA/HDMI trio than with a DVI/DVI duo. My question is, are there any sound reasons to go to the extra effort of finding a card with two DVI ports versus simply running one of my monitors through a DVI and one through a VGA on a DVI/VGA/HDMI card? Quality differences? Any variety of image asymmetry? Configuration difficulties (I dual boot Windows and Ubuntu)? Anything else?

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• Can I provision half a core as a virtual CPU?

  - by ramdaz

  I am virtualization newbie. Please advise on these questions. Please note using a commercial VM software like Citrix or VMware is not a choice for me. I have at my disposal a couple of 2x 4 core servers with 32 GB RAM. I need to create 16 VMs on each server to test some web applications. Can I provision half a core as a virtual CPU for each VM? To my best knowledge I can't do so on Xen. Is it possible on KVM or some other free open source VM solution? If it's not possible to assign half a core, how do I ensure that uniform processing power is available for all VMs? Since the job is to create separate instances for hosting 16 web apps in a physical server, do you recommend setting up a private cloud using Ubuntu Enterprise Cloud as a better option? Is there HA solution under KVM, like Remus for Xen?

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• Increase application performance on Amazon AWS

  - by Honus Wagner

  I've got a client with an MVC v1 (.NET) application running on a micro instance. On this instance, I've got .NET, IIS 7.5, and MS SQL Server 2008 running to handle the application. The client has reported that it is taking nearly 10 seconds to process each request. Even loading the initial login page takes about that long, then logging in takes that long, etc etc. The currently running instance specs are as follows: 615 MB RAM Intel Xenon CPU E5430 @ 2.66GHz 2.78 GHz 64-Bit Is the memory availability the issue? or is it the processing power? I forsee two options: Change to a larget instance Set up a 2-tier architecture with two micro instances Which of these will give the application better performance? Thanks in advance.

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• HP OfficeJet 5600 w/ Dlink DPR1260 not printing except from Notepad

  - by joelarson

  I have an OfficeJet5600 attached to a Dlink DPR1260 wireless print router. It has worked great for a long time. Today we had a power outage and the thing was inaccessible. I reset the DPR1260 and reinstalled drivers and soforth. I can now print from Notepad, but not from any Office programs, IE, or Chrome. I have toggled on and off many settings such as spooling/not spooling, etc. Nothing has helped. Any ideas? I have Windows Vista.

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• Is it possible to have a computer run two OS's in memory at the same time?

  - by Hebon

  I'm sick of needing to reboot my computer every time I wish to use another OS, or run a virtual machine that skimps on power. With the onset of large amounts of memory for computers nowadays I began to think that there must be some way to run two OS's in memory with a way to switch between the two. In my mind, it doesn't seem too difficult; a compatibility layer boots up after bios, which in turn boots to OS1. While in OS1, software is run that triggers a save to ram boots back to the compatability layer, and then boots to OS2. This way, the OS's can be used side by side and boot times are cut drastically short since both OSs are already in ram. Both OS's have their own designated and protected memory so there is no problem there... I mean, it seems fine, but no one has done it, so there must be some reason as to why. I would love some insight into this please.

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• Remote Desktop or Streaming Software/Services that Supports Gaming

  - by Griffin

  I've simply been amazed by the quality and speed of Onlive, as this technology has the potential of making hardware requirements irrelevant to the average user. However, at the moment Onlive is only for remotely controlling video games, and not desktops or other devices in general. I'm in pursuit of software or services that can accomplish this as well as Onlive does. I need: viewer (client) program portability (able to run on a USB stick) DirectX, OpenGL / full-screen game compatibility on the server side.** Gaming-acceptable color/scaling quality and responsiveness. I have a very powerful desktop at home and I want to be able to access this raw power from any other computer that I stick my USB into (in the same way Onlive gives gamers use of their powerful servers) What software/services has most of the above? NOTE: please specify what features your suggestion doesn't have.

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• 2 ATI Radeon HD 5870 (crossfire): Intermittent loud fan and non-functioning secondary card

  - by Merritt

  Installed 2 5870s. Left off the left side panel of my case(cooler master haf x), started my computer, installed the drivers and set up the crossfire... yada yada yada... everything worked fine. Then turned off computer, put left side panel back on, turned on computer, and heard a very loud buzzing (asssuming it was a gpu fan). Checked status of cards (in Windows 7) and the secondary card did not appear. Turned off the computer, took off left side panel, jiggled power connectors into secondary card, then turned the computer back on, and it worked again. Put the panel on, turned on computer, worked. Sometime later, turned on computer, and there's that loud fan sound again. What gives?

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• Suse 12.3 cannot boot after a forced shutdown

  - by David Dai

  I was doing a system update using zypper update After a while the screen was filled with this message failed to start system logging service. and the system was not responding. I had to shutdown it by holding the power button. then I started the machine again, and selected to boot suse. Then I saw the fancy boot animation(some shiny big dots gathering to the center of the screen), then the screen just turned black and the monitor sayed "no signal". then I tried to boot into suse failsafe mode, which was fine. how can I investigate into this problem?

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• Intel Core i7-4960HQ vs. 4850HQ (Haswell) [on hold]

  - by Timothy R. Butler

  I'm looking at the new MacBook Pros and trying to decide between the Core i7-4960HQ (2.6 GHz) and i7-4850 (2.3 GHz). I've found some synthetic benchmarks comparing them, but I haven't found a lot of data, so I'd appreciate any pointers to good comparisons for the Haswell family (especially these two processors). My cursory analysis seems to suggest there isn't a huge gain from the extra 300 MHz. I'd like to determine not only whether this is generally true, but also to figure out if the gains that are made in performance come at too high of cost. Is the 2.6 going to be pushing the limits of what can fit in a thin laptop without overheating? I've looked at some of Intel's documentation, but have not been able to determine what the normal and maximum operating temperature differences are for the models. In the past, there have been times that Intel's fastest models in a given range ran especially hot and/or consumed significantly more power compared to slightly slower models. Do those concerns factor into the current generation?

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• Using Windows 7 drivers in Windows Server 2008 R2

  - by Robert Koritnik

  Maybe I should post this to http://www.serverfault.com. Windows 7 comes with all sorts of signed drivers so there's high probability that all drivers for your machine will be installed during system setup. On the other hand Windows Server 2008 doesn't event though it's practically the same OS when it comes to drivers. But I know that this has a very good reason. It's a server product, not a desktop one. But the thing is that many power users and developers use server OS on their workstations which are normally desktop machines and would need Windows 7 driver spectrum... Question I know I've been reading about some trick on the internet that first installed Windows 7 on the machine, than do something to get either all Windows 7 driver collection or just those installed, and then install Windows Server 2008 and use those drivers. The thing is: I can't seem to find these instructions on the internet any more. If anybody knows where these are please provide the link for the rest of us.

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• Open Source webapp that shows PC / Projector status in 30+ Lecture rooms

  - by Seanchán

  I am looking for a simple web application that only has a simple graphical representation of the current status of 30+ lecture rooms. I.e. Green = good, Red=bad i.e. PC or Projector not working. With a little message and a ETA as well. I am not looking for monitoring software, merely a way for a tech to flag a room as "technically challenged" until 1PM or until "Friday 10AM". With a message for those lecturers who are interested: "Waiting on replacement bulb" or "Power supply gone" I know this is a simple thing to code up yourself, but I am looking for something that has been around for a few years that has some cool extra little functionality that you wouldn't think of yourself. I just can't find anything like that out there. And just to be clear: not monitoring software, more like lecturer feedback web app.

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• Merit and demerits for various Linux fiberchannel multipath options

  - by wzzrd

  On our Linux servers, we currently use HPs qla2xxx drivers, because it has multipathing (active/passive) built in. The are, however, various other options, like Red Hats device-mapper-multipath with the stock qla2xxx drivers (multibus and failover) and things like SecurePath and PowerPath (both of which can do trunking, iirc). Can someone tell me what the merits and demerits of the various options are (if I can ask such a question), besides the obvious fact that the {Secure,Power}Path options cost vast amounts of money? I'm mainly interested in the freely available options, like HPs qla2xxx vs. Red Hats multipathd and possible other open source solutions, but I would like to hear good reasons to go for the commercial solutions too. UPDATE: I'll be benchmarking various options the coming few days (the average of 10 runs of iozone for each option (options being native qla2xxx failver, native qla2xxx multibus, HP qla2xxx failover)). I'll post a summary of results here for those interested.

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