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  • Prolific USB-to-Serial Comm Port significantly slower under Windows 7 comparing to Windows XP

    - by Dmitry S
    Not sure if this question should be asked here or on SuperUser but if we get an answer here it may be useful for others here I am using a Prolific USB-to-Serial adapter based on the Prolific chip to use with a device on serial port. I have the latest version of the driver installed: 1.3.0 (2010-7-15). When I use my device with this adapter on my main Windows 7 (32bit) system it takes 8-9 seconds to send a command through to the device. However, when I do the same thing on a different Windows XP system (an old laptop I borrowed for testing) it only takes 2-3 seconds. I have made sure that the port settings and other variables are the same between systems. I also tested on a third laptop (also running Windows 7) and again got a significant delay. So the question is if anyone else experienced the same problem and found a solution. I would like to avoid moving to an XP system for what I need to achieve so that's my last option. Thanks in advance.

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  • How can I tell which page is creating a high-CPU-load httpd process?

    - by Greg
    I have a LAMP server (CentOS-based MediaTemple (DV) Extreme with 2GB RAM) running a customized Wordpress+bbPress combination . At about 30k pageviews per day the server is starting to groan. It stumbled earlier today for about 5 minutes when there was an influx of traffic. Even under normal conditions I can see that the virtual server is sometimes at 90%+ CPU load. Using Top I can often see 5-7 httpd processes that are each using 15-30% (and sometimes even 50%) CPU. Before we do a big optimization pass (our use of MySQL is probably the culprit) I would love to find the pages that are the main offenders and deal with them first. Is there a way that I can find out which specific requests were responsible for the most CPU-hungry httpd processes? I have found a lot of info on optimization in general, but nothing on this specific question. Secondly, I know there are a million variables, but if you have any insight on whether we should be at the boundaries of performance with a single dedicated virtual server with a site of this size, then I would love to hear your opinion. Should we be thinking about moving to a more powerful server, or should we be focused on optimization on the current server?

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  • Help Email Account Management among multiple users

    - by CogitoErgoSum
    So I preface this with saying this may belong in IT Security, not too sure feel free to move. Currently we have an email account [email protected] - hosted via google apps (as is all our email). We had an incident where we had to terminate an employee. This employee however had the password for this account as we have 20-30 people utilizing it at any given point to manage customer emails etc. Thinking on this I feel there must be a better way to manage access. With Google you can associate upto 10 email accounts to another the problem is we have more like 20-30 people going. We were evaluating tools such as SalesForce and Assistly where people have their own login credentials and then the system contains the appropriate smtp information for the [email protected] email address to send emails from it rather than a users personal account. Aside from those options does anyone have any other thoughts? One suggestion floated was moving everyone to desktop clients and saving the PW info there so they could only login from their physical workstation but we may have situations where we'd like employees to work remotely. Does anyone have experience with this sort of system where ~20-30 people are responding from one email box and how to manage security and access?

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  • Will Parallel-port dongle work on USB-to-Parallel Adapter?

    - by Gary M. Mugford
    We have a niche program running on a Win2K laptop that uses a security dongle connected to a parallel port for authentication. The laptop is getting creaky and I spent a frustrating night last night shopping various websites for a new laptop that had a parallel port. Seems I'm about three years late [G]. The question I have, is, if I buy a new(ish) laptop and use a USB-to-Parallel Port adapter, will the security dongle work? I know I'm not being specific about the app, but it's one most people wouldn't have heard of anyways. I've been guessing the answer to my question is no, since the app won't know to send a request out to the non-existent port. But, if the process actually is that the dongle sends a message INTO the computer every now and then, then it might work. And, I'm not sure whether the dongle is only needed at program startup time or randomly. The dongle is a 'permanent' addition to the old laptop. This is all about the money. We can have a newly-updated version of the program (which won't add any features we need) for the princely sum of $2700. Or we can spend $500 on a refurbed laptop still running WinXP, add a 30 buck adapter and keep the same solid, stolid performance we've come to appreciate. But it all comes down to the dongle behaviour. Oh, and a dock won't work. The whole laptop issue is about moving about the various nooks and crannies of the building with laptop in hand. Thanks for any suggestions/guidance. GM

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  • Load Testing a Security/Gateway Appliance

    - by Joel Coel
    In a couple weeks I will load testing a security/gateway appliance. We're a small residential college, and that "residential" means the traffic moving through the appliance is a bit like the Wild West. We have everything from Facebook to World of Warcraft, BitTorrent to Netflix, or Halo to YouTube... basically anything you might find in the home of a high-school or college aged person. Somewhere in there some real academic work gets done as well. We rely on our current appliance for traffic shaping, antivirus, malware filtering, intrusion detection on our servers, logging and abuse reporting, and even some content filtering. All this puts a decent load when we have students around, and I'm concerned about the ability of the new candidate to keep up. On paper it should handle things, but I'm worried. Prior experience is that vendors greatly over-report what an appliance can handle. The product also includes a licensed session limit, and I'm also worried that just a few misbehaving students could unwittingly bring us to that limit and cause service disruptions. I need to know this will work for our campus in order to commit to it. Going a performance level higher in that product takes the pricing way out of line with what we expect and have done in the past. What I need is a good way to load test this guy. My problem is that our current level of summer traffic is less than one percent of what it will be when students come back just six weeks from now. Any ideas on how to really stress this thing and see what it can do, in a way that will give me some clear ideas o. How that will scale for our campus? For the curious, I'm looking at a Watchguard 515, but it could be anything. If I were evaluating a competitor, I'd ask the same question.

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  • Setting Up Apache as a Forward Proxy with Cahcing

    - by Karl
    I am trying to set up Apache as a forward proxy with caching, but it does not seem to be working correctly. Getting Apache working as a forward proxy was no problem, but no matter what I do it is not caching anything, to disk or memory. I already checked to make sure nothing is conflicting in the mods_enabled directory with mod_cache (ended up commenting it all out) and also I tried moving all of the caching related fields to the configuration file for mod_cache. In addition I set up logging for caching requests, but nothing is being written to those logs. Below is my Apache config, any help would be greatly appreciated!! <VIRTUALHOST *:8080> ProxyRequests On ProxyVia On #ErrorLog "/var/log/apache2/proxy-error.log" #CustomLog "/var/log/apache2/proxy-access.log" common CustomLog "/var/log/apache2/cached-requests.log" common env=cache-hit CustomLog "/var/log/apache2/uncached-requests.log" common env=cache-miss CustomLog "/var/log/apache2/revalidated-requests.log" common env=cache-revalidate CustomLog "/var/log/apache2/invalidated-requests.log" common env=cache-invalidate LogFormat "%{cache-status}e ..." # This path must be the same as the one in /etc/default/apache2 CacheRoot /var/cache/apache2/mod_disk_cache # This will also cache local documents. It usually makes more sense to # put this into the configuration for just one virtual host. CacheEnable disk / #CacheHeader on CacheDirLevels 3 CacheDirLength 5 ##<IfModule mod_mem_cache.c> # CacheEnable mem / # MCacheSize 4096 # MCacheMaxObjectCount 100 # MCacheMinObjectSize 1 # MCacheMaxObjectSize 2048 #</IfModule> <Proxy *> Order deny,allow Deny from all Allow from x.x.x.x #IP above hidden for this post <filesMatch "\.(xml|txt|html|js|css)$"> ExpiresDefault A7200 Header append Cache-Control "proxy-revalidate" </filesMatch> </Proxy> </VIRTUALHOST> Thank you once again!

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  • IIS7 - Virtual Directories' Parent Paths behaving differently than previous versions

    - by MisterZimbu
    I'm doing a migration of a web server running on IIS 5 to IIS 7. I'm noticing that the virtual directories are behaving differently between the two. I have a site located at c:\inetpub\SiteName. This site contains a virtual directory "bob" that points at c:\virtualdirs\bob. There's a script in the bob folder (script.asp) that contains just: <!--#include virtual="../index.asp"--> I'm noticing different behaviors between IIS5 and IIS7 when I attempt to run the script by going to http://SiteName/bob/script.asp: IIS5 references the parent path of the site, and imports c:\inetpub\SiteName\index.asp. IIS7 references the parent folder of the virtual directory, and looks for a c:\virtualdirs\index.asp (that doesn't exist). Doing a Response.Write of a Server.MapPath confirms this. Is there a way to get IIS7 to behave like IIS5 in this regard? Unfortunately, moving index.asp and its logic into the virtualdirs folder isn't an option as the virtual directory will be shared across many sites (with differing index.asps). Thanks.

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  • How to change controller numbering/enumeration in Solaris 10?

    - by Jim
    After moving a Solaris 10 server to a new machine, the rpool disk is now c1t0d0. We have some third party applications hard coded for c0t0d0. How can I change the controller enumeration on this machine? There is no longer a c0. I've tried rebuilding the /etc/path_to_inst, but the instance numbers don't seem to match up with the controller numbers. Also, it's not clear if i86pc platforms use this file. I've tried devfsadm -C to clear the dangling links, but I'm not sure how to cause devfsadm to start numbering from 0 again (or force certain devices in the tree to a specific controller number). Next I am going to try to create the symlinks manually in /dev/dsk and rdsk to point to the correct /devices. I feel like I am going way off path here. Any suggestions? Thanks Update: This is on virtual ESXi hardware with an additional pass-through HBA. There is no controller 0 on the machine, that is for sure. devfsadm -C cleans up all the c0 device symlinks but keeps the already linked controllers at their current ids.

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  • Why is the link between my switch and my router always negotiating half-duplex mode?

    - by Massimo
    I have a Cisco 2950 switch which has one of its ports connected to an Internet router provided by my ISP; I have no access to the router configuration, but I manage the switch. If I leave all switch ports with their default setup (auto-negotiation of speed and duplex mode), this link always connects at 100 MBit/s, but in half-duplex mode. I've tried replacing the cable, and also moving the link to another switch port: the result is always the same. A different device connected to the same port (or to any switch port, really) shows no problem at all. It could be guesed that someone configured the router to only connect in half-duplex mode... BUT, here's the catch: if I manually force the switch port to full-duplex mode (duplex full in the interface configuration), the link goes up, stays up and is completely stable. So: The connection is not forced to half-duplex mode by the router, otherwise it would not connect at all if I force the switch end to full-duplex. There is no actual link problem, otherwise the full-duplex connection would not go up or would at least show some errors. But if I leave the port free to auto-negotiate, it always connects in half-duplex mode. Why?

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  • SQL Server Installation: Is it 32 or 64 bit?

    - by CapBBeard
    Recently I was performing an OS upgrade on one of our DB servers, moving from Server 2003 to Server 2008. The DBMS is SQL Server 2005. While reinstalling SQL on the new Windows installation, I went to another of our DB servers to verify a couple of settings. Now, I always thought this second server was Server 2003 x64 + SQL 2005 x64 (from what I'd been told), but I now have my doubts about this. I now suspect that it is in fact only 32 bit SQL, however I'd like to verify this. Here's some details: The OS is definitely 64 bit. xp_msver shows Platform as NT INTEL X86 SELECT @@VERSION shows Microsoft SQL Server 2005 - 9.00.4035.00 (Intel X86)... However sqlservr.exe is not shown with '* 32' in taskmgr, does anyone know why this is the case, if it is in fact 32 bit as claimed? Despite this, it does seem to be running out of the x86 program files folder. If I do the same checks on a confirmed 64 bit installation, it does give back the expected 64 bit readings, which can only prove that this server in question is only running in 32 bit. Now, that being the case, the question arises about how much memory this '32 bit' install can use. Task manager reports about 3.5GB memory usage for sqlservr.exe (The server has 16GB physical). I suspect that AWE has not been configured at all, and therefore the server will be significantly under-utilised (remembering that the OS is 64 bit) if SQL is simply using a 32bit address space. Is this assumption correct? I feel the server should have SQL reinstalled as 64 bit in order to fully utilise the hardware platform, however it is currently heavily in production; this will be no easy task. I suspect we may just have to configure AWE correctly and let it be for the time being (Unless this is a bad idea?). I apologise that this question is a little vague/lost; I'm no SQL expert, just trying to get a handle on what's going on here.

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  • Two hosted servers, one public - VPN?

    - by Aquitaine
    Hello there, Web developer here who has to occasionally wear a system & network admin hat (small company). We currently have a single hosted server running Windows Server 2003 that runs both our web server (IIS/Coldfusion) and our database server (SQL Server 2008). We lock down the SQL server by allowing only specific IPs to connect to it. Not ideal but it's worked thus far. We're moving up to two distinct servers and I want to take the opportunity to 'get things right' and make only the web server face the public. What I need to be able to do is to allow only a handful of people to connect to the database server. Rather than using an IP allow list, I'd prefer to use a VPN to let people through so that access is based on the user and not simply the user's location. I'm leaning toward something like OpenVPN, just so I can stick with Server 2008 Web edition. Do I: Use the web server as a VPN server and set up the database server to only accept connections from the web server? Is there an extra step required to make connections to, say, db.mycompany.com route through the VPN rather than through a different connection? I'm ignorant of this part of network infrastructure stuff. Or, Set up a VPN server on the database server as the only public-facing server connection so that there aren't any routing issues to deal with? I know this is Network 101 stuff but I thought I'd ask before just blundering through it since it could affect the company a bit. Thanks very much!

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  • Setting up DNS using VirtualMin/WebMin

    - by Nyxynyx
    I am moving from a cPanel server to one where I've installed VirtualMin. The LAMP stack and the website files have been setup properly and I can access the website by its IP address. Problem: Now its time to point my domain mydomain.com to my new server. After reading many sites describing setting up bind and master zones, I am pretty confused as to what to do, especially coming from a cPanel server where its really simple to set this up. Attempt Tried to register my nameservers ns1.mydomain.com and ns2.mydomain.com at my domain registrar, but I am missing the IPs I need to point these nameservers to. Should I set ns1.mydomain.com to the IP addres of my web server, and not register ns2.mydomain.com? When specifying the DNS for mydomain.com, the first one I've set it to ns1.apadment.com. On the manager/admin page of my webhost provider, I am given the option to create a secondary slave DNS, which I assigned to the IP address of my server. Though I am not sure how the slave DNS will copy the info from my web server? I have assigned this secondary DNS ns.hostprovider.com as the second DNS for mydomain.com I tried creating a Virtual Server under Virtualmin, but it seems to mess up Apache's DocumentRoot for the site by creating and enabling a new vhost file that ends with .conf. I edited the .conf file to point DocumentRoot back to where its supposed to be /var/www/mydomain instead of /user/mydomain.com I believe the next step is to setup the zone. Virtualmin has already created a Master Zone with 8 different addresses (www.mydomain.com, ftp.mydomain.com...). Under Nameservers, there are already 2 records. One is the hostname (random name given by hostprovider, ns12345.ip123-123.net), the other is the secondary slave DNS provided by the host provider. Does having BIND running on my web server makes the server the master DNS? Thank you!

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  • Linux: prevent VNC from swapping like mad

    - by Weezy
    I'm accessing a MacMini (with MacOS X 10.4) from my Linux machine using VNC and there's an issue that is driving me crazy... My Linux machine has 4 GB of ram and I run a lot of various apps on it and I've got no issue at all. It's all snappy and don't hear the hard disk swapping/read/writing too often. Now with VNC, the hard disk is swapping like mad... When I'm moving things on the OS X desktop. So I was thinking of creating a ramdisk and forcing the temp VNC files to go into that ramdisk but the problem is I can't find any temp files. I've attempted to do that: #!/bin/bash while [ true ] do lsof | grep vnc done And eyeball parse the output to try to find some temp file: no luck. The VNC version I'm using is this one: $ vncviewer -version VNC Viewer Free Edition 4.1.1 for X - built Jan 30 2009 19:33:16 Copyright (C) 2002-2005 RealVNC Ltd. No matter how much data is coming from the Mac, there should be plenty of memory (4 GB of ram) so there's really no reason to swap like crazy. This is driving me mad. Any help as to how I could solve this problem is most welcome because this is literally driving me nuts.

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  • How much memory will a Windows file-server be able to use effectively.

    - by Zoredache
    In the near future we will be moving our fileserver to a newer box that will be running Windows 2008R2. I want to know how much memory Windows will be able to use for a system that is just a file-server. In searching around I found an old document for Windows 2000 that mentions the maximum size of the file-system cache is 960MB. I suspect this limit no longer applies, but is there a new limit? The file server will be just a standard Windows fileserver. It will have 1TB of attached storage. The large majority of the of the files accessed during the day are just typical Office documents. There are 80-100 people usually using the fileserver during a typical day. This system will only be used as a file server, it doesn't have any other roles. In Windows 2008r2 is there any hard limits for the filesystem cache? What are they? The server we will be re-using for this purpose currently has 4GB of memory, but it can be maxed out at 16GB. Is there any value in doing this for a Windows file-server? Are there any performance counters can I look at on the existing 2003 fileserver that will tell me if adding more memory will be worthwhile.

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  • How to use Zune software to listen to podcasts with generic MP3 player?

    - by Bevan
    I listen to a bunch of podcasts - a great way to fill the otherwise mindless space of a daily commute. My MP3 player is a Transonic brand, appears on my computer as a generic storage device. I've been using iTunes to download the podcasts, and manually moving the files out of the disk folder onto my player, but this is pretty tedious. iTunes also fails to recognise that the files are gone and leaves them in the list. (Actually, iTunes for windows is pretty much a dog, but that's a different rant.) The Zune software is 99% of what I want in a podcast downloader - performs well, looks nice, downloads reliably and so on. Some features - like only downloading the next five unheard episodes of a podcast - are superb. However, if I manually move the files across to the MP3 player, the Zune software concludes that the file has never been downloaded, and downloads it again. This leads me to my question: What is a good way to use the Zune software to download podcasts for listening on a generic MP3 player? Are there any addons for the Zune software to make this easier? Registry hacks? Can I configure the Zune software to not download the same episode multiple times? Is there a way for the Zune software to populate my MP3 player directly, instead of having to copy files?

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  • Mac "Steam needs to be online to update" - 404 fetching *_osx.zip.*

    - by Chris Boyle
    Since yesterday evening, when I launch Steam on OSX, a self-update progress bar appears instead (at 0 of 30MB or so). This bar does not advance, an error dialog appears: Steam needs to be online to update Please confirm your network connection and try again. The app then exits. This happens whether wifi or ethernet or both are connected, and pings to the outside world succeed throughout. If I look at the logs in Console, they are very similar to this example (though that's not mine). Specifically: Success! http://store.steampowered.com/public/client/steam_client_osx?date=718277 [...] Failed! http://cdn.store.steampowered.com/public/client/breakpad_osx.zip.27f59114a86fcd50533e1d7b128f9300947f9969 Failed! http://cdn.store.steampowered.com/public/client/steam_osx.zip.11a99384214805f2dd3be5084ba6be61d662f8ac Failed! http://cdn.store.steampowered.com/public/client/miles_osx.zip.d9fb546541f59c1fdd03962a605236b1021abab8 Requesting the first URL successfully returns some data including the filenames of the latter three, and requesting any of those gives me a 404 (I've tried multiple clients on multiple continents). Searches on Google and Twitter show about 10-20 others having this problem in the past 24 hours, but hardly the angry mob I'd expect if the problem affected all Steam OSX users. Things that have already been tried with no effect: Switching between wifi and ethernet. Killing all Steam processes including ipcserver. Moving the ~/Library/Application Support/Steam/registry.vdf file away. Requesting those URLs with other clients and from other locations. Interesting: that first URL with the date parameter returns the same content even without that parameter (thus would lead to the same 404s) suggesting that the problem is not necessarily specific to coming from a particular currently-installed version of Steam.

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  • Passenger not booting Rails App

    - by firecall
    I'm at the end of ability, so time to ask for help. My hosting company are moving me to a new server. I've got my own VPS. It's a fresh CentOS 5 install with Plesk 9.5.2 Essentially Passenger just doesnt seem to be booting the Rails app. It's like it doesnt see it's a Rails app to be booted. I've got Rails 3.0 install with Ruby 1.9.2 built from source. I can run Bundle Install and that works. I've currently got Passenger 3 RC1 installed as per here, but have tried v2 as well. My conf/vhost.conf file looks like this: DocumentRoot /var/www/vhosts/foosite.com.au/httpdocs/public/ RackEnv development #Options Indexes I've got a /etc/httpd/conf.d/passenger.conf file which looks like this: LoadModule passenger_module /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.0.pre4/ext/apache2/mod_passenger.so PassengerRoot /usr/local/lib/ruby/gems/1.9.1/gems/passenger-3.0.0.pre4 PassengerRuby /usr/local/bin/ruby PassengerLogLevel 2 and all I get is a 403 forbidden or the directory listing if I enable Indexes. I dont know what else to do! Yikes. There's nothing in the Apache error log that I can see. The new server admin isnt much help as I think he's a bit junior and says he doesnt know about Rails... sigh :/ I'm a programmer and server admin isnt my bag :(

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  • What is the fastest way to resize a large partition?

    - by Jook
    Due to a new HDD-Configuration I am currently handling larger backup/resize tasks with partitions between around 900MB, wich are 70-90% full. some background: First thing I've noticed was, that the Acronis-WesternDigital TrueImage was extremly slow while running it under Windows 7, even though on high priority. To create a normal backup for 650gb of data (900gb partition), it would have taken 3 days! The same task done with the boot-cd version of this acronis version took about 2 hours (SATA3 copy from one disk to another, both around 110MB/s). Now, after I have done all my backups, I've wanted to remove some obsolete partitions and resize the leftovers to full hdd size. Of course, usually this takes quite some time - in this case for this 900gb partition, to extend it to 931 (30gb+ from front, 1gb+ from end), it will take around 6 hours (using gparted)! Had I new that erlier, I would have just restored the image. But no - first it showed a reasonable time of 1:45h and 0 of 1 operations, but after finishing 1:45h it started again, only this time with 4h to go, still 0 of 1 operations, but now it was copying instead of moving. Question: However, why has it to be this slow to resize a partition? I am asking for a good explanaition. This has bugged me, since I started partitioning - why does it require to copy all the data around, can't it just stay in place?!

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  • Is there an high quality natural text reader for the mac?

    - by Another Registered User
    I'm reading about 150 pages of text on screen, every day. I will have to read about 15.000 in the next upcoming months. No joke. Well, the problem is this: I suffer from a sort of attention deficit hyperactivity disorder which forces me to read every sentence up to 10 times until I really get it. Mac OS X Snow Leopard has a built-in text reader with the name "Alex". Although it is already pretty good quality, I know there are far better natural sounding voices out there. I have heard already voices that are absolutely amazing compared to Alex. They're so good, that you can't tell anymore the difference between a real person or a computer. Alex still has this "metal factor" in its voice, which makes my ears hurt after 8 hours of listening. The next problem with Alex is, that he never makes a break after a sentence. Also, it's not possible to think about a sentence and then continue reading. It's also not possible to have him repeat a sentence, without tedious text selection and shortcut usage. Actually, the best tool I can imagine would have the option to read a sentence and move on to the next one after pressing a special key, OR repeating the previously one after pressing a special key. That would help so much! And if that's even with one of those bell lab / AT&T / whatever super-natural voices, even better! But it would be already a great relief if there was just a better tool to control Alex. To let him make breaks after sentences or let him speak big chunks of text sentence-by-sentence with fine-grained control over repetition and moving on. Is there anything?

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  • Will restoring a cPanel account delete irrelevant mysql databases?

    - by user54625
    Long story short: I have many accounts in WHM, many domains. However, most of the MySQL databases for all the sites were created under one user, "admin" (let's say it's admin.com). I recently moved the admin.com account to another web server , and now I need to move it back. I would like to restore this account from a backup made by that web server. However, it only has 3 databases attached to that domain, while the server I'm moving it to has those 3 databases (old DBs that need to be replaced), PLUS all the other databases which are used by other accounts on the server. My question: if I restore the admin.com account, will it delete all the other databases on the account, or will it only replace the 3 DBs it has? I can't take any chances here to delete all those other DBs... If it WOULD delete all those other accounts, how would I go about restoring this account without losing the other data? An easy to way to resolve this situation would be to move the mysql owners to the proper accounts, but alas it doesn't seem that there is a way to do that via WHM.

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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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  • Programmer configuring a new network

    - by David Lively
    I'm in the process of expanding my home network from a couple of laptops on a wireless Verizon FiOS router to include: Linksys 24-port switch Cisco Pix 515 Cisco 3640 router One new development desktop and three new machines to act as a db server, web server and a backup system. My company is moving offices and we've decommissioned some older hardware, which I was able to pick up for the cost of the labor to move it home from the office. The benefits to working with dedicated web and db servers are very valuable to me. I know very little about network topology, other than that everything plugs into the switch, which then plugs into the cheap Verizon router. (Verizon provides a coax connection that the router must translate into Ethernet before I can use it with any of this equipment). Questions: What is the recommended topology for this equipment? Verizon router - Pix - 3600 - switch? Is the 3600 even necessary or desirable? The Verizon router has one WAN port and 4 client ports, all 10/100. Is there any performance benefit at all to wiring multiple connections from the verizon router to the switch, assuming I don't use the Pix? Should I use the Pix? Software firewalls are a pain, and seem silly if I have a device like this lying around. Anything else I should know? Am I wasting my time with this? I also obtained a 7 foot rack, shelves, patch panels, UPS, patch panels, etc, which are going into a conveniently air conditioned closet. All constructive advice appreciated.

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  • Some clients cannot connect to Server 2008 R2 VPN

    - by Robl
    Hi all, Have a server 2008 r2 setup as a VPN server. We have created a windows group to control access to the VPN called vpn-users. Clients are all Windows 7 Pro. This all seems to work fine except some users cannot connect to the VPN! For example I try to logon to the VPN from a client and get an error saying the server refused the connect due to a policy in place. Specifically authentication type! Fine I think. So i drop that user into the vpn-users group created for this and try again and hey presto the user can now logon! Great. Now try this with another user. But this time I get the same error even though I have dropped them into the vpn-users group!! So does anyone have any idea why this works for some users and not for others?? I have tried moving the user from certain OU's in AD to others, copying the account, taking the user out of the vpn-users group and then back in but get the same error each time. Any thoughts anyone?

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  • Network driver for Hyper-V restore from Windows Home Server

    - by Philipp Schmid
    I have backed up Windows Server 2008 running virtualized on Hyper-V to a Windows Home Server 2008 SP1 (I know I should have backed up the VHD instead). Now I need to restore the contents of the VM from WHS. I have created a restore CD ISO and used it to create a new VM. It all works as advertised up to the point where the restore process wants to load the network drivers (it only finds 4 disk drivers on the restore CD. but no network drivers). So I created a virtual floppy and copied the contents of 'Home Server Drivers for Restore onto it. But no luck! I have tried moving the 4 subdirectories into the root of the floppy, but that didn't work either. Finally, I started another instance of the WS 2008 to identify the network driver that the virtualized instance is using (%WINDOWS%\system32\drivers\netvsc60.sys) and copied that file onto the virtual floppy, without success. Does anyone have any suggestions on how to get networking working on a Hyper-V instance running off the Windows Home Server Restore CD? UPDATE: As suggested by delenda, I have added a legacy network adapter to my VM, and indeed I now get a network driver listed! However, the WHS it still not found, even after entering the home server name manually. PHS

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  • Mac: window manager frozen, have ssh access

    - by Bernd
    I have a Mac which regularly runs into a problem. The user interface stops reponding, showing a "frozen" user interface. The mouse is still moving but clicking does not trigger anything. This happens about once a week. Solution so far is to force switch-off the Mac and reboot it. I have ssh root access to the Mac. Killing (kill -9) the active application has no visible impact on what is shown on the screen. Any ideas on how to diagnose this? Is there a way to restart the window manager from the ssh shell? Killing /System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreGraphics.framework/Resources/WindowServer seems not to be possible. The Mac is an early 2008 iMac and runs Lion with latest updates. /Library/Logs/DiagnosticReports is empty. Update: Problem stays after update to Mountain Lion. The WindowServer process is in "uninterruptible wait" state ("U" flag in ps output set): imac:~ root# ps ax|awk "NR==1|| /WindowServer/"|grep -v awk PID TT STAT TIME COMMAND 86 ?? Us 50:51.69 /System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreGraphics.framework/Resources/WindowServer -daemon Any idea for diagnosing what blocks the process? Any idea for "waking up" the process?

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