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• centos TCP/IP connection very slow

  - by yuli chika

  I have a VSP (centos6.1 64bit) with 4gb ram. It always runs well, but in recent few days, the server become slowly. open a small css file need 22 seconds(2kb). tested in home/office/phone with (IE,chrome,safari,firefox). see in firebug networking DNS Lookup ?4?ms Connecting ?21.18?s Sending 1?ms Waiting ?115?ms Receiving ?9?ms The connection cost 21.18 seconds I have checked all the log file, there have no error. top commond, still have free memory. top - 00:23:15 up 8 days, 3:57, 1 user, load average: 3.60, 3.42, 3.83 Tasks: 221 total, 4 running, 217 sleeping, 0 stopped, 0 zombie Cpu(s): 19.3%us, 3.2%sy, 0.0%ni, 76.1%id, 1.4%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 4194304k total, 3247724k used, 946580k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 32357 mysql 15 0 3710m 835m 6268 S 34.5 20.4 39:14.40 mysqld 9780 apache 15 0 442m 59m 12m S 33.2 1.4 0:05.69 httpd 9842 apache 15 0 403m 26m 10m S 16.9 0.7 0:01.23 httpd 9847 apache 15 0 412m 45m 22m R 15.3 1.1 0:01.00 httpd 9834 apache 15 0 426m 46m 11m R 13.0 1.1 0:02.22 httpd 9891 apache 15 0 407m 43m 19m S 8.0 1.1 0:00.33 httpd 9845 apache 15 0 414m 51m 24m S 6.0 1.3 0:01.53 httpd 9827 apache 15 0 402m 28m 11m S 3.3 0.7 0:02.69 httpd 9768 apache 16 0 414m 51m 24m S 3.0 1.3 0:06.51 httpd 9889 root 15 0 211m 12m 8160 S 2.7 0.3 0:00.32 php 9702 apache 15 0 415m 55m 26m S 1.7 1.4 0:10.67 httpd 9844 apache 15 0 413m 47m 21m S 1.7 1.2 0:01.21 httpd 9697 apache 15 0 414m 51m 24m S 1.3 1.3 0:11.05 httpd 9778 apache 15 0 414m 53m 25m S 1.3 1.3 0:05.38 httpd 9772 apache 15 0 414m 51m 23m R 0.7 1.3 0:05.04 httpd 9823 apache 15 0 415m 50m 23m S 0.7 1.2 0:03.97 httpd 9837 apache 15 0 402m 27m 11m S 0.3 0.7 0:01.04 httpd Then, how to check where is the problem and fixed it? I haven't change and config files in these days. Thanks.

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• Painfully slow login to AD bound Mac OS X Leopard machine when off home network

  - by GeeBee

  Dear all Just looking for a little help with this problem that seems to trip a lot of people up and is causing me no end of grief. I have a number of fully patched OS X Leopard machines that are bound to my AD (Server 2003). When on the home network, logging in seems swift and works as expected. When users take the machines off site, login can take 5 minutes or more. The user adds correct credentials but the desktop does not appear for a very long time. Outside the office, I have tried logging in using a local Admin account, switching off Airport and then logging in using an AD account. In this situation login is immediate again. It all seems as if Leopard is finding a suitable wireless network, spending far too long looking for the Domain before eventually giving up and using the cached credentials instead. I have read that disabling Bonjour on the machine will stop this problem (i have not yet tested) http://www.macwindows.com/leopardAD.html#111607z ...but I am reluctant to use this "Solution" as I would like to be able to use Bonjour on the local network as well as having AD-bound machines. However, is disabling Bonjour really the only answer? Is there not some time-out setting somewhere that could be amended to stop Leopard spending forever looking for home? Any help would be very gratefully received Thanks Gordon

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• Sendmail : Mail delivery of same domain to internal or external mail server.

  - by Silkograph

  Its bit difficult to explain but very simple problem. We have internal sendmail server and hosted server. Both are set to same domain name. We have mixed mail accounts. For example we have two user in one office. [email protected] is local only [email protected] is internal plus external. Internal means we create user on local linux box where sendmail is set. External means we create user on local and hosted server. [email protected] can send mails to any internal user created on Linux box where sendmail is installed. But he can not send mail to outside domain and no mail can be sent to him as there is no account created on external hosted server. [email protected] can send mails to internal as well as all other domains through sendmail's smart_host feature, which uses hosted server's smtp. [email protected] can get all external emails internally through Fetchmail on linux box. Now we have third user [email protected] who will be always outstation and can use external server only. So I can not create account on local linux box for [email protected] because his mail will get delivered locally only. I don't want to create alias and send his mails to gmail or yahoo's account. I want to send emails to his external account from any internal user. How this can be done? Thanks in advance.

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• How to choose which network connection provides the default gateway in Windows XP

  - by Cathy

  I have a laptop with an integrated NIC and a WiFi connection. Both the wired and wireless networks I am using can access the Internet. Win XP is routing all traffic through the wireless network. I want to force it to route everything through the wired network when it is available (i.e. when I am sitting at my desk with the laptop docked) and through the wireless when that is the only option (i.e. when I have undocked my laptop and carried it to a conference room, or if I am out of the office working on a different WiFi network). The wireless connection cannot be established until after I am logged into Windows, so it's always the second network to become available to the OS. I have manually overridden the metric values in the TCP/IP configurations so that the NIC has metric 10 and the WiFi has metric 20. However, Windows is still picking the WiFi adapter's address as the Default Gateway, so this isn't helping. If I manually disable and re-enable the WiFi adapter, then it will switch the default gateway to the wired network and stay that way until I shutdown Windows. How can I tell Windows XP not to replace the default gateway when the WiFi connection is first enabled?

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• Troubleshoot dropped wireless connections

  - by Jack

  I was recently hired in the IT department of a small company (~180 users) and one of the issues that people have been complaining about is having their wi-fi connections drop during meetings. The company is using an HP ProCurve Wireless LAN with 10 APs and a controller unit located in the server room. I don't have any experience troubleshooting WLAN in a multi-AP environment, so I'm trying to at least gather information using free or cheap tools. I did a basic site survey using the free version of Ekahau HeatMapper and discovered the following in one of the conference rooms that has been a problem. The program picked up three access points (plus a bunch of others with much lower signals that were out of range): AP 1: SSID: "Unknown SSID" - Signal strength: -48 dBm - -40 dBm. Channel: 2 AP 2: SSID "CompanyMain" - Signal strength: -35 dBm or greater. Channel: 2. Security: WEP (This is the main SSID for the company's WLAN.) AP 3: SSID: "CompanyGuest" - Signal strength: -40 dBm - -35 dBm. Channel: 2. Security: WPA2 (This SSID is the company's "guest" WLAN, which was setup to allow Internet access, but prevent network access.) Is there anything that you see that is clearly a problem from the above? I'm assuming that the unknown SSID might be a big problem, and that it is an AP from a neighboring office that is causing interference. Does that seem likely? Also, regarding channel, should we try changing the channels of our APs to avoid interference with that unknown SSID? (Since everything seems to be on Channel 2?) Should our APs be on different channels? In other words, should the CompanyMain and CompanyGuest APs be on different channels? Finally, any recommendations for free/cheap tools to help me figure this out, and/or a good methodology to follow? Thanks in advance for any help. Jack

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• emails not sending from CentOS 5.6 VM on Win7 via PHP code

  - by crmpicco

  I am experiencing an issue where my CentOS 5.6 (Final) VM running on Windows 7 has stopped sending emails from my PHP code. I'm confident this isn't a coding issue as I have the exact same code running in my office and emails send correctly from there, hence why I believe this to be a networking/configuration issue. In my /etc/hosts/ file on my VM I have the following: 127.0.0.1 localhost.localdomain localhost 192.168.0.9 crmpicco.co.uk m.crmpicco.co.uk dev53.localdomain When I run setup on my VM the DNS configuration is set to dev53.localdomain and my Primary DNS is 192.168.0.1. In My /var/log/maillog files I see a lot of this sort of thing: Nov 19 14:36:58 dev53 sendmail[21696]: qAJEawI7021696: from=<[email protected]>, size=12858, class=0, nrcpts=1, msgid=<1353335817.9103820024efb30b451d006dc4ab3370@PHPMAILSERVER>, proto=ESMTP, daemon=MTA, relay=localhost.localdomain [127.0.0.1] Nov 19 14:36:58 dev53 sendmail[21693]: qAJEawvd021693: [email protected], [email protected] (48/48), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=42681, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (qAJEawI7021696 Message accepted for delivery) Nov 19 14:36:59 dev53 sendmail[21698]: qAJEawI7021696: to=<[email protected]>, delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=132858, relay=mailserver.fletcher.co.uk. [213.171.216.114], dsn=5.0.0, stat=Service unavailable Is this likely to be a configuration issue?

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• Cable management techniques

  - by cornjuliox

  How do you manage the giant jungle of cables behind your PC? When you have 2 or more PCs next to each other, you wind up with this giant mess cables that's a pain in the neck to clean especially when both computers are running 24/7 and any fidgeting with the cables is likely to cause data loss and/or angry users. So far I've tried masking tape, cable ties and plain old string but none have been very effective. The masking tape kept the cables in place, but over time they ended up leaving this awful sticky residue on the sides of the cables that just won't come off gets all over your fingers and is horrible horrible horrible. I have nightmares about that stuff. We used cable ties and 'folded' up some of the longer cables so that they weren't any longer than they needed to be, but this meant that the position of some of our devices like the keyboard and the mouse were essentially 'fixed' until we removed the ties. The string didn't work much differently and required that we tie them properly or risk it coming loose. I would switch to a wireless keyboard and mouse, but I don't want to have to deal with the added expense of batteries, even the rechargable ones. Plus I don't want them to die on me at a crucial moment (happened to me once while playing Firearms _<). I know that there are people out there with home/office networks a thousand times more convoluted than mine, so

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• Remote search system for samba shares

  - by fostandy

  I have several shares residing on a samba server in a small business environment that I would like to provide search facilities for. Ideally this would be something like google desktop with some extra features (see below), but lacking this the idea is to take what I can get, or at least get an idea for what is out there. Using google desktop search as a reference model, the principle additional requirement is that it is usable from clients over the network. In addition there are some other notes (note that none of these are hard requirements) The content is always files, residing on a single server, accessible from samba shares. Standard ms office document fare Also a lot of rars and zips which it is necessary to search inside. Permissions support, allowing for user-based control to reflect current permission access in samba shares. The userbase will remain fairly static, so manual management of users is fine. majority of users will be Windows based I know there are plenty of search indexers out there: beagle and tracker seem to be the most popular. Most do not seem to offer access control and web-based/remote search does not seem to be high priority. I've also seen a recent post on the samba mailing list asking for pretty much the exact same thing. (They mention a product called IBM OmniFind Yahoo! Edition and while their initial reception seems positive, I am pretty skeptical. RHEL 4? Firefox 2? Updated much?) edit: similar question here What else is out there? Are you in a similar situation? What do you use?

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• Best way to attach 96 tb to workstation

  - by user994179

  I'm running a workstation with dual xeon 5690's (12 physical/24 logical cores), 192 gb of ram (ie, maxed-out), Windows 7 64bit, 5 slots for adapter cards, and 1 tb of internal storage, with 5 more internal bays available. I have an app that creates data files totaling about 88 tbs. These are written once every 14 months, and the rest of the time the app only needs to read them; and 95% of the reads are sequential reads of huge chunks of data. I have some control over how big the individual files are, but ideally they would be between 5 and 8 tbs. The app will be reading from only one drive at a time, and the nature of the data is such that if (when) a drive dies I can restore the data to a new disk from tape. While it would be nice to be able to use the fastest drive/controllers available, at this point size matters more than speed. After doing lots of reading, I am leaning toward buying a bunch of cheap 2tb drives and putting them into a bunch of cheap enclosures. All this stuff is going into my home office, so I need to avoid the raised floor/refrigerated approach. My questions: Is the cheap drive/enclosure solution the best one for this situation? Given the nature of the app and the way the data is used, does RAID make sense? If so, which one? For huge sequential reads, would Usb 3.0 and eSata be a wash performance-wise? For each slot available on the workstation, can I hook up an enclosure that can hold multiple drives? Or is it one controller per drive? If I can have multiple drives on one controller, am I essentially splitting the bandwidth (throughput)? For example, if I have a 12 bay enclosure, is the throughput of the controller reduced by a factor of 12? Are there any Windows 7 volume/drive/capacity limits I should be aware of? Thanks

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• Application Does Not Start in Windows 7

  - by Jim Fell

  I recently installed a new 60GB SSD as my primary hard drive and re-installed Windows 7 Professional 64-bit. I then installed SSD Fresh from Abelssoft to optimize Windows to run on the SSD. It seemed to install okay, but when I try to run the utility, its splash screen appears briefly before it quietly closes. No errors are displayed; the utility just fails to launch. I have run SSD Fresh on another SSD-equipped Windows 7 Pro x64 computer in the past without any problems. Does anyone know what might be preventing the program from running? I tried running sfc /scannow from the command line (with administrator privileges), shutting down the Spybot Resident, and disabling the firewall and virus scanner. I also tried running the tool as administrator; I even tried reinstalling it, running the installer as administrator. No luck. Every time I try to launch the program the Event Viewer logs this same set of errors: Error 4/2/2012 11:35:44 PM Application Error 1000 (100) Faulting application name: SSDFresh.exe, version: 1.0.0.0, time stamp: 0x4f2a45d8 Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0xc0000005 Fault offset: 0x000007ff0016dbba Faulting process id: 0x994 Faulting application start time: 0x01cd11fd9fe978df Faulting application path: C:\Program Files (x86)\SSD Fresh\SSDFresh.exe Faulting module path: unknown Report Id: dfeed551-7df0-11e1-a2c7-002522c47ec0 Error 4/2/2012 11:35:43 PM .NET Runtime 1026 None Application: SSDFresh.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException Stack: at AbBugReporter.BugForm.InitLanguage() at AbBugReporter.BugForm..ctor(AbFlexTrans.LanguageInfo, AbBugReporter.BugReportManager, Boolean) at AbBugReporter.BugReportManager.Show(System.Exception) at SSDFresh.App.App_DispatcherUnhandledException(System.Object, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs) at System.Windows.Threading.Dispatcher.CatchException(System.Exception) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.WrappedInvoke(System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr) at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef) at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame) at System.Windows.Application.RunInternal(System.Windows.Window) at System.Windows.Application.Run() at SSDFresh.App.Main() Error 4/2/2012 11:35:39 PM SideBySide 59 None Activation context generation failed for "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe".Error in manifest or policy file "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe.Config" on line 0. Invalid Xml syntax. Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None For those who are interested, here is my system configuration: ASRock M3A770DE AM3 AMD 770 ATX AMD Motherboard AMD Athlon II X3 455 Rana 3.3GHz Socket AM3 95W Triple-Core Desktop Processor ADX455WFGMBOX G.SKILL Value Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model F3-10600CL9D-8GBNT Mushkin Enhanced Chronos Deluxe MKNSSDCR60GB-DX 2.5" 60GB SATA III Synchronous MLC Internal Solid State Drive (SSD) (Primary/Boot HD) Western Digital Caviar Blue RFHWD1600AAJS 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive (Secondary HD) Sony Optiarc CD/DVD Burner Black SATA Model AD-7261S-0B LightScribe Support RAIDMAX RX-850AE 850W ATX12V v2.3 / EPS12V SLI Certified CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply ASUS HD7850-DC2-2GD5 Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card Asus ML228H 21.5" Full HD LED BackLight LED Monitor Slim Design (x3)

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• DNS requests failing from computers that can ping DNS server

  - by dunxd

  I have a situation where computers in some of our remote offices from time to time lose the ability to use our DNS server (in head office) to resolve hostnames. The offices are connected via VPN using Cisco ASA 5505 (VPNclient config rather than Site to Site). Ping to the IP address of the DNS server works. But nslookup will get a "no response from server" message. Computers in other locations can use DNS fine. This is an intermittent problem. One day/hour it works, another it doesn't. Other offices connected in the same way work when another doesn't. No config changes have been made on routers around the time we see the problem. Some users have reported that the problem goes away after doing a repair connection in Windows XP. I think this could be caused by the DNS cache being flushed as part of this - the Windows DNS cache makes the intermittent problem look less so because it caches failed lookups as well as successful ones. However, it is possible some other aspect of Windows is involved. Windows 7 clients have also had the same problem. Any pointers on deeper troubleshooting, or anyone else found this?

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• Building a PC, advice on SSD/Hybrid Hard Drives

  - by Jamie Hartnoll

  I am looking at building a new PC, it's mainly for office (graphics heavy) use and programming. Looking for good performance with opening and closing programs and files as well as a fast boot. I plan to have 3 primary hard drives Windows 7 Programs (photoshop etc) Current Files (There'll also be a large storage capacity back up drive, but this will be the Seagate drive I already have.) So, my question is, looking at standard "old fashioned" hard drives and SSD drives, obviously there's a massive price difference. I have been looking at drives like this: http://www.ebuyer.com/268693-corsair-120gb-force-3-ssd-cssd-f120gb3-bk-cssd-f120gb3-bk and this: http://www.ebuyer.com/321969-momentus-xt-750gb-sata-2-5in-7200rpm-hybrid-8gb-ssd-in-st750lx003 Having no experience of using either I don't know what's the most efficient thing to go for. Clearly the SSD will have better performance, but: If, for example, I had an SSD for Windows (say about 100gB), that would clearly give me the boot speed I want, then I guess my real questions are: If I were to buy one more SSD, would it give the greatest improvement on standard performance if used to store programs, or currently used files? Given that the OS is on an SSD, should I not bother with the 3 drives and instead, partition that Hybrid drive to store programs and currently used files on it? Obviously, option two is cheaper and option one could cause me storage issues, but that's when I can dump files I am not currently using onto another drive. Any, I am open to suggestions... so what do you suggest?!

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• Web Application Publishing on Citrix with Restricted Access

  - by Kanini

  We have a Citrix setup enabling users to access our applications from home. Basically, they login to our site using the Windows Authentication. Once, the are successfully logged in, they see the following icons Desktop - Full Screen (which provides them the Desktop as they would see when the login in our office) We now have a requirement where we would like to publish a web application, hxxp://ourlibrary on Citrix with the following security requirement. (this application is already accessible if the users launch the desktop and launch IE within it and navigate to it) The requirement is this - When the are successfully authenticated to our site, they should be able to see The Internet Explorer icon only, NOT the Dekstop - Full Screen icon. On clicking on the icon, Internet Explorer should open up and should automatically navigate to hxxp://ourlibrary They should not be able to access any other URL, such as Google, Hotmail etc., They should not be able to go FileOpen and Browse They should not be able to do FileSave and Browse In effect, they should be able to view the site and that should be it. Any ideas on how to accomplish the security feature? We have already published the application.

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• Backing up Excel Files to a different Directory

  - by Joe Taylor

  In Excel 2007 in the Save As box there is an option to 'Create a Backup' which simply backs up the file whenever it is saved. Unfortunately it backs up the file to the same directory as the original. Is there a simple way to change this directory to another drive / folder? I have messed about with macros to do this, coming up with: Private Sub Workbook_BeforeClose(Cancel As Boolean) 'Private Sub Workbook_BeforeSave(ByVal SaveAsUI As Boolean, Cancel As Boolean) 'Saves the current file to a backup folder and the default folder 'Note that any backup is overwritten Application.DisplayAlerts = False ActiveWorkbook.SaveCopyAs Filename:="T:\TEC_SERV\Backup file folder - DO NOT DELETE\" & _ ActiveWorkbook.Name ActiveWorkbook.Save Application.DisplayAlerts = True End Sub This creates a backup of the file ok the first time, however if this is tried again I get: Run-Time Error '1004'; Microsoft Office Excel cannot access the file 'T:\TEC_SERV\Backup file folder - DO NOT DELETE\Test Macro Sheet.xlsm. There are several possible reasons: The file name or path does not exist The file is being used by another program The workbook you are trying to save has the same name as a... I know the path is correct, I also know that the file is not open anywhere else. The workbook has the same name as the one I'm trying to save over but it should just overwrite. I have posted the question about the coding on Stack Overflow but wondered if there is an easier way to do this. Any help would be much appreciated. Joe

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• How do I setup routing for 2 companies with different Internet connections on the same LAN?

  - by Clint Miller

  Here's the setup: 2 companies (A & B) share office space and a LAN. A 2nd ISP is brought in and company A wants it's own Internet connection (ISP A) and company B wants it's own Internet connection (ISP B). VLANs are deployed internally to separate the 2 company's networks (company A: VLAN 1, company B: VLAN 2, shared VOIP: VLAN 3). With separate VLANs it's simple enough to use separate DHCP servers (or separate scopes on the same server) to assign the default gateway to each company's gateway for their Internet connection. Static routes can be created on each gateway to point traffic destined for the other company's VLAN or the voice VLAN so that all nodes are reachable as expected. However, I think this is a form of asymmetrical routing, right? (The path from node A1 to node B1 is not the same as the path back from node B1 to node A1). Can I setup policy-based routing to correct this? In that case, can I assign the same default gateway to every device on all VLANs and create a routing policy on a L3 switch to look at the source address and forward traffic to the appropriate next hop? In that case, I want the routing logic to go like this: If the destination address is known, forward the traffic (traffic destined for a different VLAN). If the destination address is unknown, forward the traffic to ISP A's gateway if the source address is on VLAN A; or forward the traffic to ISP B's gateway if the source address is VLAN B. Am I thinking about this problem in the correct way? Is there another way to solve this problem that I am overlooking?

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• Experiences in Upgrading from Exchange 2003 to Exchange 2010

  - by gWaldo

  I'm currently running Exchange 2003 SP2 Cluster on a Server 2003 AD Forest (in native 2003 mode), and we beginning to plan the upgrade to Server 2008 AD and Exchange 2010. We have two main sites, one middle-sized office, and a couple of smaller sites which have DCs (which may be RODCs after the upgrade). Currently all of our Exchange cluster is in my main site, but we are considering using the new datastore paradigm for load-balance/failover at the other large site, but this is not set in stone. Right now we are in the information-gathering and planning phases. I am looking for input of any gotchas experienced while performing either upgrade, but especially the Exchange upgrade. Gotchas? What surprised you? What wasn't documented? What said one thing but was misleading? (Confusing either in content or severity.) What is great or horrible about the new system? What worked well? What worked poorly? If you were to do it over again...? (I know that this isn't so much a question that can be definitively answered, but I'm happy to reward insight and useful resources (not the Microsoft documentation, but Blogposts are welcome) with upvotes.) UPDATE A couple items of note: -We are not currently using OWA (currently only the admins), but it may become more of a consideration with iOS devices. -We do have a small number of Blackberries in the environment (< 10%). -In addition to the standard Exchange connectors, we have a third-party connector for Captaris RightFax integration.

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• OpenVPN on Tomato and Vista - can't see my network

  - by Ian

  I followed the instructions here (http://todayguesswhat.blogspot.ca/2011/03/quick-simple-vpn-setup-guide-using.html) to set up a TCP connection to OpenVPN on my Tomato router. Used TCP because the place I usually surf at seems to have the other ports blocked. My Vista laptop is able to connect to the router but I don't appear to be getting an IP address. I'm able to access my router's admin page, but I can't see the network at home. When I browse to Whatsmyip I see my home IP. Here are the results of route print -4 when I'm just connect to the library and when I've fired up the VP connection as well: Library only: =========================================================================== Interface List 22 ...00 ff c4 a0 e7 5c ...... TAP-Win32 Adapter V9 15 ...00 23 4e 20 b3 64 ...... Atheros AR9281 Wireless Network Adapter 10 ...00 23 8b 39 ec 71 ...... Marvell Yukon 88E8040T PCI-E Fast Ethernet Controller 1 ........................... Software Loopback Interface 1 11 ...00 00 00 00 00 00 00 e0 isatap.{834A8A0A-5E2C-47D0-9673-7965DE8B5470} 14 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface 17 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 20 ...00 00 00 00 00 00 00 e0 6TO4 Adapter 18 ...00 00 00 00 00 00 00 e0 6TO4 Adapter 19 ...00 00 00 00 00 00 00 e0 6TO4 Adapter 23 ...00 00 00 00 00 00 00 e0 isatap.{C4A0E75C-765E-4F7D-A55C-77945779816A} 34 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #5 =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.1.29.1 10.1.29.117 25 10.1.29.0 255.255.255.0 On-link 10.1.29.117 281 10.1.29.117 255.255.255.255 On-link 10.1.29.117 281 10.1.29.255 255.255.255.255 On-link 10.1.29.117 281 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 10.1.29.117 281 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 10.1.29.117 281 =========================================================================== Library and TCP OpenVPN: IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 10.1.29.1 10.1.29.117 25 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.116 30 0.0.0.0 128.0.0.0 192.168.1.1 192.168.1.116 30 10.1.29.0 255.255.255.0 On-link 10.1.29.117 281 10.1.29.117 255.255.255.255 On-link 10.1.29.117 281 10.1.29.255 255.255.255.255 On-link 10.1.29.117 281 24.212.205.68 255.255.255.255 10.1.29.1 10.1.29.117 25 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 128.0.0.0 128.0.0.0 192.168.1.1 192.168.1.116 30 192.168.1.0 255.255.255.0 On-link 192.168.1.116 286 192.168.1.116 255.255.255.255 On-link 192.168.1.116 286 192.168.1.255 255.255.255.255 On-link 192.168.1.116 286 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.1.116 286 224.0.0.0 240.0.0.0 On-link 10.1.29.117 281 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.1.116 286 255.255.255.255 255.255.255.255 On-link 10.1.29.117 281 =========================================================================== Thanks for any advice. I looked at one of the answers but I'm not sure if it applied to me as it said that 10...* was the vpn connection, but I appear to have 10...* when I connect just to the library.

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• Wireless to Wireless Transfer Slow on a Linksys WRT54GL

  - by Kyle Brandt

  The Situation: When I try to transfer a file from one computer to another that are both connected via wireless on a WRT54GL (in a office) with dd-wrt firmware I often get bad speeds. In generally they average around 100 kilobytes a second. Either computer can download via wireless from the Internet at at about 2 megabytes a second. The speed is slow with the transfer of one large file. There are about 20 other wireless networks that the computers can see, so there is a lot of noise, but I don't have the equipment to really monitor the frequencies well. But that still seems pretty slow. I thought maybe it was the transmit on each card, but even when they are 5 feet away with a line of sight I still get these speeds. According to Linux both cards are operating at 54g. My Questions: Is this normal for this sort of consumer level wireless equipment? Anything I can do to improve it? why is wireless to wireless transfer slow when everything else isn't? Whats steps might I take to figure out what is happening? For example, are lots of packets not making to the access point requiring retransmissions? Above all, I want to find out what the problem actually is. This may seem odd, but at this point I am more interested in understanding what the problem is than fixing it. What I have tried: I have tried messing with lots of settings. Different channels, xmit power, G-Only, none of which has made anything any better. I've also tried upgrading to newer dd-wrt firmware version and doing a reset to wipe out the settings.

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• LDAP, Active Directory and bears, oh my!

  - by Tim Post

  What I have: Workstations running Ubuntu Jaunty mounting /home on a remote NFS server. User accounts are still created locally on each individual workstation. Workstations running Windows XP / Vista NFS server (as noted above) Windows 2008 server All machines share a single private network (LAN). What I need to accomplish: A single, intuitive (GUI driven) place for an office administrator to create user accounts. This should let anyone login to their (linux or windows) workstation, then fire up remote desktop and use the same login to the Windows 2008 server, from any machine on the network. I have read so much on samba, LDAP vs AD, etc and now I'm even more confused than I was before I began researching the problem. Ideally, Linux and Windows users should be able to get to their local files once logged into the Win2008 server. I am a programmer, not an interoperability guru and I'm completely lost on where to even start trying to accomplish this, plus I've run out of things to Google. How would you do this? Is it even possible?

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• Inconsistent SMTP Access

  - by Mike Hanson

  I have a mail server setup on Windows Server 2008. All was working fine, until I wanted to map a drive on the server so that I can access files on another machine. Windows prompted me to configure Network Discovery, which I did with the "Home/Office" option rather than "Public". After that, several access points that worked before stopped working, like VNC, SMTP, etc. After reinstalling those packages, things appeared to be working again. Unfortunately, problems have returned with my SMTP server. I can use an web-based SMTP tester, and it connects in 62msec (as expected). However, if I telnet from my machine on the same LAN, it takes more than 20 seconds to connect! When I try to send messages from Outlook, it times out entirely with the message: Sending' reported error (0x80042109) : 'Outlook cannot connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).' I've checked the firewall settings, I've tried configuring it to use port 587 instead of 25, but nothing gets around this problem. Does any have any useful insights? Thanks in advance!

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• wget is working only when used with sudo

  - by Yusuf

  I'm having quite a strange behavior with wget since yesterday. I can download files by using sudo wget, but when I try the same file with only wget, I can get this error: yusufh@ubuntu-yuh:~$ wget http://www.kegel.com/wine/winetricks --2010-12-17 09:34:11-- http://www.kegel.com/wine/winetricks Resolving www.kegel.com... failed: Name or service not known. wget: unable to resolve host address `www.kegel.com' and with sudo wget: yusufh@ubuntu-yuh:~$ sudo wget http://www.kegel.com/wine/winetricks --2010-12-17 09:35:37-- http://www.kegel.com/wine/winetricks Connecting to 127.0.0.1:5865... connected. Proxy request sent, awaiting response... 200 OK Length: 190672 (186K) [text/plain] Saving to: `winetricks' 100%[==================================================================================================>] 190,672 --.-K/s in 0.03s 2010-12-17 09:35:37 (6.92 MB/s) - `winetricks' saved [190672/190672] After the comments below, here is an update: I can use Google Chrome or Firefox perfectly without running it as root. I use ntlmaps to connect to the office proxy. So I need to use 127.0.0.1:5865 as the proxy for clients. Result for env | grep -i proxy: NO_PROXY=localhost,127.0.0.0/8,*.local, http_proxy=127.0.0.1:5865 ftp_proxy=127.0.0.1:5865 all_proxy=socks://127.0.0.1:5865/ ALL_PROXY=socks://127.0.0.1:5865/ https_proxy=127.0.0.1:5865 no_proxy=localhost,127.0.0.0/8,*.local while sudo env | grep -i proxy is empty! HELP!

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• Find the IP of the router between me and main router/gateway?

  - by Crash893

  I have a Netgear router that is the main router/gateway in and out of the network. Then I have a Linksys 54g router with WiFi that we use as are main WiFi access point The Cat5 runs from the router to the WiFi routers LAN port (not WAN). And then if you connect to that WAP you are basically on the network. I want to be able to find out what the IP address of that WAP is but so far I can't figure out how to: I've tried doing a tracert to the gateway IP but I get nothing. I've scanned all the IP addressed in the network. I've gone to the Netgear main router and looked under attached devices but it doesn't say anything. Any ideas on how I can figure out how to administer it? (I do have limited physical access but my attempt to plug into it came back with a faulty IP (in the 169 range where the rest of the office is 192.168...). I never set this router up to begin with so I'm reluctant to just kill it with the reset button because I can't get into see what the settings are set to.

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• Bandwidth Suggestion

  - by Campo

  I have been asked to analyze the bandwidth usage of a company and make a recommendation for upgrading their Internet connection(s). Here is the layout 3 DLS lines so it is 3x(6 Down, 1 Up Each) into a load balancer out to the office's network. 30 VOIP phones run on a T1 (1.5 Down, 1.5 Up) The users at the company are heavily uploading. It is my suspicion that the issue in slowdown is being cause by multiple people uploading and others not being able to get requests out for even simple http requests. My initial idea is to get them a fiber line with a 10 down and 10 up. What do others think on this plan? Will that be enough to host their network traffic? What do I do about the VOIP line afterward? The fiber is expensive and I know the T1 does a great job for their VOIP so I do not want to suggest a DSL line because I know it may not be sufficient. I would also like to save them some money if I can. Maybe even get a faster fiber line and forgo the T1. Though I know their load balance/switch can only handle 20MB/S throughput. Looking for some confirmation/suggestions on my plan. I am planning on going in to get some real diagnostic numbers. Any suggestions on software to use for that? Preferably Windows software.

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• Disappearing Arial on 2 Macs

  - by drewk

  I noticed that Safari started rendering common web pages in a funny manner on two different Macs that I have. One is a Macbook Pro and the other a Mac Pro desktop. Yahoo and Google would appear all excessively bold or all italic and not at all look right or acceptable. The computers are all running OS X 10.6.3 "Snow Leopard" Turns out that "Arial.TTF" and "Arial Bold.ttf" got deleted somehow on these two computers. I restored Arial through Font Book and got my web mojo back. So questions: 1) Anyone seen "arial" strangely randomly disappear? The only thing in common is these are the only two computers out of eight on site that recently got Adobe CS 5 installed. Has anyone had CS 5 delete arial? 2) When I restored arial with font book, it goes into User fonts rather than the All fonts. Can I use Font Book to restore a font in /System/Library/Fonts or do I need to do that manually? 3) I located THIS article on the web regarding OS X fonts. Essentially, Snow Leopard did away with the older .dfont format and replaced with open True Type. There is a minimum font list, but Arial is not among them. Arial is installed by MS Office. 4) Why are web sites affected by Arial being missing anyway? If I look at the HTML source for Yahoo for example, "arial" is specified by name only in an ad. Yahoo itself does not specify a font name. In my Safari preferences, I have Times and Courier specified as the default font which is the default for Safari when installed. How does a missing Arial screw things up anyway? Thanks in advance.

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• Windows 7 pc freezes for an indeterminate amount of time after unlocking

  - by pikes

  Not sure if this type of question is appropriate for this forum, but I've tried everything I can think of to solve this problem aside from format/reinstall. I recently got a new work PC (Dell optiplex 755) with windows 7 professional x64. Standard developer software installed for .net development: VS2008, VS2005, SQL management studio, office 2007, etc. Recently I've been having this weird problem where after I lock my pc, when I try to unlock it, the screen will be black for awhile after unlocking. I can ctl+alt+del and put my password in but then it just goes black. The amount of time on the black screen seems to be related to the amount of time I am away from my PC. If only away a few minutes, it'll take about a minute to get to the desktop. If away for an hour, could take up to 15 minutes. If I lock it and go home for the night, I have to restart my PC in the morning (I've let it sit for an hour after a night of being locked and nothing happened). It doesn't do it every time but definitely the majority of the time. One weird thing I've seen is that if I remote into my machine before trying to log back in it does not do it. I uninstalled all software back to the point when I remember it started happening and it still does it. I was using this PC for a few weeks without this problem happening at all. Anyone know what my next troubleshooting steps could be? My IT department tried to fix it by moving my old profile to another disk and having me log in, effectively recreating a profile from scratch but that didn't solve it. As I said above if this isn't the right forum for these types of questions please let me know. Thanks in advance!

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