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  • Best practice for system clock sync on KVM host

    - by Tauren
    I have an Ubuntu 9.10 server running as a KVM host with ntpd installed on it. The host system has the correct system time. At the moment I only have a single KVM guest, also Ubuntu 9.10 server. I do not have ntpd installed on it, and I just discovered the clock is about 6 minutes slow. It wasn't that way when it was installed about a month ago. I thought that I only needed to keep the host clock synchronized and that the guests used the host clock. But maybe that is a memory from using OpenVZ. I believe the reasoning was related to only the host could modify the physical system clock. Is running ntpd on both the host and all the guests the correct thing to do? Or is there something else that is preferred? How should I keep the guest clocks in sync?

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  • Converting a VMware player image from non-persistant to persistant

    - by Journeyman Geek
    I'm pondering setting up a virtual machine to generate app-v (since i got mdop from school) or thinapp application virtualisation packages. Ideally with either of these, i should work off a fresh system do the install, then copy out the packages produced. I'd like to not have to reinstall windows per package to get a fresh, unmodified stock copy of windows. I'm aware that its possible to make a hard disk image persistant in vmware player (one of my lecturers did it, but he's in another country). I'm wondering how would i convert a persistant image to a non persistant one? I'm currently running vmware player 4, with windows 7 guest and host.

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  • RAID P410i and P812 performance issues

    - by Alexey
    I'm having much trouble with I/O performance of HP DL360 server with two RAID controllers - P410i and P812, Windows Server 2008, 36 GiB RAM and 16 x Intel Xeon x5550. The server runs a bunch of tasks producing heavy sequential I/O, and after about 20-30 minutes of intensive work it looks like the tasks are stuck, not using CPU and with enough free memory (so this cannot be a bottleneck). The same tasks were running quite well on the older server (Windows Server 2003, 4 x Intel Xeon, 12 GiB RAM). RAID cache is present, write-cache battery is installed. Cache is configured as 25% readahead/75% writeback. The swap file resides on the logical disk served by P410i and other logical disks are on P812. Can someone tell me what can be the matter of this? Is this a hardware problem or misconfiguration?

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  • Openfiler RAID 10 option not found

    - by chrisling106
    Hi, I'm building a NAS using Openfiler2.3 (from 32-bit ISO), first of all I want to experiment it on VM first before going out and buy the harddrives needed. I created 5 virtual drives on VMware, sda is 2GB and the rest 1GB each (sdb to sde). I left sda blank and want to setup a RAID 10 disk using sdb, sdc, sdd and sde, 4 RAID partitions are setup successfully, but when I try to create a RAID device the only option for RAID level is 1, 0, 5 and 6. RAID 10 is not there! Can someone let me know what have I missed, please? TIA.

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  • KVM Guest installed from console. But how to get to the guest's console?

    - by badbishop
    I'm trying to install a fully virtualized guest (Fedora 14 x86_64) on KVM (RHEL 6), using command-line only (both hypervisor and guest). It goes without errors, and without a tangible result . I'd like to know how to do a text-only installation. So, here's what I've done: # virt-install \ --name=FE --ram=756 --vcpus=1 \ --file=/var/lib/libvirt/images/FE.img --network bridge:br0 \ --nographics --os-type=linux \ --extra-args='console=tty0' -v \ --cdrom=/media/usb/Fedora-14-x86_64-Live-Desktop.iso Starting install... Creating domain... | 0 B 00:00 Connected to domain FE Escape character is ^] ÿ Now what? As I understand after googling for a couple of days, I should see the guest's output from the text installation, but nothing happens. virt-viewer cannot connect to it, kindly suggesting that I explore all the options by adding --help (which I did). If I reconnect with virsh, I see this: Domain installation still in progress. You can reconnect to the console to complete the installation process. [root@v ~] # virsh console FEConnected to domain FE Escape character is ^] This shows that VM is running # virsh list Id Name State ---------------------------------- 8 FE running Qemu log: LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin /usr/libexec/qemu-kvm -S -M rhel6.0.0 -enable-kvm -m 756 -smp 1,sockets=1,cores=1,threads=1 -name FE -uuid 6989d008-7c89-424c-d2d3-f41235c57a18 -nographic -nodefconfig -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/FE.monitor,server,nowait -mon chardev=monitor,mode=control -rtc base=utc -no-reboot -boot d -drive file=/var/lib/libvirt/images/FE.img,if=none,id=drive-ide0-0-0,format=raw,cache=none -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive file=/media/usb/Fedora-14-x86_64-Live-Desktop.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:0a:65:8d,bus=pci.0,addr=0x2 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 char device redirected to /dev/pts/1 Output of /etc/libvirt/qemu/FE.xml # cat /etc/libvirt/qemu/FE.xml <domain type='kvm'> <name>FE</name> <uuid>6989d008-7c89-424c-d2d3-f41235c57a18</uuid> <memory>774144</memory> <currentMemory>774144</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel6.0.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/var/lib/libvirt/images/FE.img'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:0a:65:8d'/> <source bridge='br0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target port='0'/> </console> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </memballoon> </devices> </domain> I'm obviously missing something that many others don't, but what is it? Thanx in advance!

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  • Webkit based browsers on Mac refuse to load certain websites or resources, other browsers work fine from the same machine

    - by BergQuester
    OK, this one has really been puzzling me. Certain websites (such as instapaper.com ) or certain resources (such as the CSS and images for icanhazcheezeburger.com sites) refuse to load at all in Safari or Chrome on any of my Mac machines. Rebooting the machine doesn't fix it. If I use another browser, such as Firefox or a browser on my iPhone or in my Windows virtual machine, the pages load just fine. When the whole page errors out, Safari displays an error: "WebKit encountered an internal error" WebKitErrorDomain:300 This is all from within my home network. Any ideas what could possibly be causing such bizarre behavior?

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  • Need help configurating my Tomcat server without any WAR files

    - by gablin
    I just reinstalled my entire server, and now I can't seem to get my JSP-based website to work on Tomcat anymore. I use the same server.xml file, which worked perfectly before the reinstallation, but no longer. Here's the content of the server.xml file which worked before: <!--APR library loader. Documentation at /docs/apr.html --> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html --> <Listener className="org.apache.catalina.core.JasperListener" /> <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html --> <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <!-- Global JNDI resources Documentation at /docs/jndi-resources-howto.html --> <GlobalNamingResources> <!-- Editable user database that can also be used by UserDatabaseRealm to authenticate users --> <Resource name="UserDatabase" auth="Container" type="org.apache.catalina.UserDatabase" description="User database that can be updated and saved" factory="org.apache.catalina.users.MemoryUserDatabaseFactory" pathname="conf/tomcat-users.xml" /> </GlobalNamingResources> <!-- A "Service" is a collection of one or more "Connectors" that share a single "Container" Note: A "Service" is not itself a "Container", so you may not define subcomponents such as "Valves" at this level. Documentation at /docs/config/service.html --> <Service name="Catalina"> <!--The connectors can use a shared executor, you can define one or more named thread pools--> <!-- <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="150" minSpareThreads="4"/> --> <!-- A "Connector" represents an endpoint by which requests are received and responses are returned. Documentation at : Java HTTP Connector: /docs/config/http.html (blocking & non-blocking) Java AJP Connector: /docs/config/ajp.html APR (HTTP/AJP) Connector: /docs/apr.html Define a non-SSL HTTP/1.1 Connector on port 8080 --> <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <!-- A "Connector" using the shared thread pool--> <!-- <Connector executor="tomcatThreadPool" port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> --> <!-- Define a SSL HTTP/1.1 Connector on port 8443 This connector uses the JSSE configuration, when using APR, the connector should be using the OpenSSL style configuration described in the APR documentation --> <!-- <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true" maxThreads="150" scheme="https" secure="true" clientAuth="false" sslProtocol="TLS" /> --> <!-- Define an AJP 1.3 Connector on port 8009 --> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> <!-- An Engine represents the entry point (within Catalina) that processes every request. The Engine implementation for Tomcat stand alone analyzes the HTTP headers included with the request, and passes them on to the appropriate Host (virtual host). Documentation at /docs/config/engine.html --> <!-- You should set jvmRoute to support load-balancing via AJP ie : <Engine name="Standalone" defaultHost="localhost" jvmRoute="jvm1"> --> <Engine name="Catalina" defaultHost="localhost"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> <!-- The request dumper valve dumps useful debugging information about the request and response data received and sent by Tomcat. Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.valves.RequestDumperValve"/> --> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> <!-- Define the default virtual host Note: XML Schema validation will not work with Xerces 2.2. --> <!-- <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> --> <!-- SingleSignOn valve, share authentication between web applications Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.authenticator.SingleSignOn" /> --> <!-- Access log processes all example. Documentation at: /docs/config/valve.html --> <!-- <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/> --> <!-- </Host> --> <Host name="www.rebootradio.nu"> <Alias>rebootradio.nu</Alias> <Context path="" docBase="D:/services/http/rebootradio.nu" debug="1" reloadable="true"/> </Host> </Engine> </Service> </Server> The JSP site doesn't use any WAR files or anything like that; there's just a default.jsp in the specified folder D:/services/http/rebootradio.nu which loads the site. As I said, this configuration worked before, but now with the latest verion of XAMPP and Tomcat it doesn't work anymore. All I get is a 404 message saying The requested resource () is not available.

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  • magento on Zend Server (Win7) installation error

    - by czerasz
    I try to install magento for the first time. I've created the database with the name "project" in my C:\Zend\Apache2\conf\httpd.conf I added on the end: <Directory "C:\Zend\Apche2\htdocs\project"> Options Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> in my ZendServer/Server Setup/Extensions: PDO_MySQL, simplexml, mcrypt, hash, GD, DOM, iconv, curl, SOAP are on in C:\Zend\ZendServer\etc\php.ini I set: safe_mode = Off ;<-- was set to off ... memory_limit = 512M; Maximum amount of memory a script may consume (128MB) After step "Configuration" of magento installation (with Use Web Server (Apache) Rewrites enabled) I get: Internal Server Error My database is full of tables (that schould be ok) My Zend Server shows: 27-Oct 06:55 6 Severe Slow Request Execution (Absolute) http://localhost/project/index.php/install/wizard/installDb/ Critical Open 27-Oct 06:55 4 Fatal PHP Error C:\Zend\Apache2\htdocs\project\lib\Varien\Db\Adapter\Pdo\Mysql.php Critical Open 27-Oct 06:55 5 Slow Function Execution curl_exec Warning Open 27-Oct 06:55 5 Slow Request Execution (Absolute) http://localhost/project/index.php/install/wizard/configPost/ What can be wrong?

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  • Server Performance

    - by Burt
    We have a dedicated server that we use to stage websites (our test server). The performance of the server has become really bad and we regularly have to restart it. When performance is poor I have checked task manager for the processes and memory but everything looks OK. We use a content management system and it is always when using the admin section of this CMS that we notice the performance degrade which makes me think it may have something to do with DB calls the CMS is making. Does this sound viable? Any other sggestions of how I can go about testing this? Thanks in advance...

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  • Apache Front End....Tomcat back end...SSL question

    - by Jared
    Hi Everyone, Question.... I have Apache setup as my webserver. Tomcat is hooked into Apache via mod_jk, so the user never interacts with Tomcat. I have set up SSL on the Apache Webser...I can hit it with https:// localhost When I try to access my application at ...https://localhost/app I get a directory not found error. Catch is when I go regular http... I can hit it fine... http:// localhost/app What do I have to edit for this connection to work? I have uncommented the AJP connector in server.xml I have added my virtual host to httpd.conf What am I missing? Thanks in advance. Jared

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  • Amazon EC2 performance vs desktop

    - by flashnik
    I'm wondering how to compare performance of EC2 instances with standard dedicated servers and desktop. I've found only comparance of defferent clouds. I need to find a solution to perform some computations which require CPU and memory (disc IO is not used). The choice is to use: EC2 (High-CPU) or Xeon 5620/5630 with DDR3 or Core i7-960/980 with DDR3 Can anybody help, how to compare their performance? I'm not speaking about reliability of alternatives, I want to understand pros and cons from the point of just performance.

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  • What is the correct configuration for multiple apache2 vhosts and multiple php5-fpm pools?

    - by farinspace
    I have a group of sites (group A) which I would like to run using one php5-fpm pool and a second group of sites (group B) which I would like to run using a second php5-fpm pool. I can effectively define/create the pool in the fpm.conf file and I confirmed that it is running with the different user/group I've defined. However I am unclear as to how to setup the apache virtual host config. I've tried a few apache2 configurations but I seem to not be able to add the second pool. If you've done this please help.

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  • How to reliably take Java Heap Dumps?

    - by karlcyr
    My team is running into difficulties when trying to take good heap dumps triggered by OutOfMemoryErrors. For specific reasons we are currently taking the dumps with jmap called from a bash script instead of using the HeapDumpOnOutOfMemoryError flag. We're using a 64-bit 1.6 JVM with a heap size around 3 GB. Our heap dumps fail 90% of the time (guesstimate). Is there anything we can do to improve our odds of getting a clean heap dump we can use to troubleshoot memory problems? I have read that jmap had major issues in Java 1.4 but that those issues should be mostly addressed now.

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  • Remotely managing Hyper-V VMs from Windows 8 Client

    - by Vazgen
    Currently, I have a core Hyper-V Server hosting VMs for a domain controller and several domain-joined VDI infrastructure servers. The VMs are connected in that domain environment, but the remote management of the physical Hyper-V Server is set up using the same WORKGROUP (as the Windows 8 client I'm managing from) This makes it cumbersome to manage the VMs hosted on the physical server from my remote management Windows 8 client because I can only connect to the physical Hyper-V server and not the individual VMs hosted inside. Can I make my set up more flexible by hosting a second domain controller in a VM hosted on my Windows 8 machine and switching my remote management set up to use the same domain through? Meaning ALL physical and virtual machines including the VDI infrastructure under the same domain? I'm new to this just looking for some suggestions.

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  • Error installing Network driver

    - by Simon Carpentier
    I'm tring to install NetLimiter 3 (3.0.0.10, x64) on my Windows 7 x64 machine. At the driver installation step, I'm getting an error: Error 0x8004a029: Couldn't install the network component. (InstallNdisIMDriver) UPDATE 2010-09-20: I received a response to my support request: Hi Simon, It seems that problem is rather on your system than in NL3. Too many networking applications (VPN, Virtual computers) are installed on your machine and they are preventing NL3 from proper installation. In order to install NetLimiter 3, try to disable/temporarily remove these apps. Several users had the same problem and shuffling with adapter and networking software helped them. Please, let us know which action helps you (if any). Sincerely, Jan Bilek Any thoughts on this?

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  • Are there any data remanence issues with flash storage devices?

    - by matt
    I am under the impression that, unlike magnetic storage, once data has been deleted from a flash drive it is gone for good but I'm looking to confirm this. This is actually relating to my smart phone, not my computer, but I figured it would be the same for any flash type memory. Basically, I have done a "Factory Reset" on the phone, which wipes the Flash ROM clean but I'm wondering is it really clean or is the next person that has my phone, if they are savvy enough going to be able to get all my passwords and what not? And yes, I am wearing my tinfoil hat so the CIA satellites can't read my thoughts, so I'm covered there.

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  • Transferring Windows XP Mode VM to Another Machine?

    - by Omar Kooheji
    I've been running Windows XP mode on my Windows 7 Laptop for a while now and I've got my VM set up just how I like it. I am switchign laptops due to an intermittent hardware failure. Is it possible to transfer my Windows XP mode VM to my new laptop? I know it's just a Windows Virtual PC VM, how would I go about transferring it if this is possible? Will the Fact that I'm moving from Windows 7 Ultimate to Windows 7 Pro make a difference? AFAIK they both support Windows XP Mode.

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  • Virtualbox and Serial Port permissions

    - by Pandincus
    I have a Windows XP Pro SP3 host machine running a Windows XP Pro SP3 guest machine. The host machine has one serial port, COM1, that I need to use in the guest machine. When I add the serial port to the guest machine and try to start it, I get the following error: Failed to start the virtual machine xxx Cannot open host device 'COM1' for read/write access. Check the permissions of that device (VERR_ACCESS_DENIED). Unknown error creating VM (VERR_ACCESS_DENIED). What are some of the things that might be causing this problem? How can I check "permissions" on a serial port?

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  • An SQLite/STDIN Conundrum, Specific to AIX

    - by mikfreedman
    Hi there! I'm been playing around with SQlite at work, specifically with trying to get the sqlite3 command line tool to accept stdin instead of a file. Sounds easy enough, on linux you can execute a command like: echo 'test' | sqlite3 test.db '.import /dev/stdin test' unfortunately - our machines at work run AIX (5 & 6) and as far as I can tell, there is no equivalent to the virtual file /dev/stdin. I managed to hack together an equivalent command that works on AIX using a temporary file. echo 'test' | cat - > /tmp/blah ; sqlite3 test.db '.import /dev/stdin test' ; rm /tmp/blah Now, does it need to use STDIN? isn't this temporary file thing enough? Probably, but I was hoping someone with better unix-fu had a more elegant solution. note: the data I would like to import is only provided via STDOUT, so that's what the echo 'test' command is all about

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  • Rough estimate for speed advantage of SAN-via-fibre to san-via-iSCSI when using VMware vSphere

    - by Dirk Paessler
    We are in the process of setting up two virtualization servers (DELL R710, Dual Quadcore Xeon CPUs at 2.3 Ghz, 48 GB RAM) for VMware VSphere with storage on a SAN (DELL Powervault MD3000i, 10x 500 GB SAS drives, RAID 5) which will be attached via iSCSI on a Gbit Ethernet Switch (DELL Powerconnect 5424, they call it "iSCSI-optimized"). Can anyone give an estimate how much faster a fiber channel based solution would be (or better "feel")? I don't mean the nominal speed advantage, I mean how much faster will virtual machines effectively work? Are we talking twice the speed, five times, 10 times faster? Does it justify the price? PS: We are not talking about heavily used database servers or exchange servers. Most of the virtualized servers run below 3-5% average CPU load.

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  • Improve performance of bind9 service restart

    - by Jakob
    Hi, I'm setting up a name server hosting DNS for a large number of domains, 50,000 - 100,000 domains. I will be using Bind9 and the service will need to be restarted several times a day. I have made some tests and it seems that restart of the Bind9 service scales very poorly with the number of domains. #domains | restart time ----------------------- 10,000 | 3.1 sec 25,000 | 8.9 sec 50,000 | 50 sec 100,000 | 7:50 min Is there some way to speedup the restart of the service? I have noticed that restart only utilizes one core, is there some way for it to use more cores? The Bind9 version is 9.7.1-P2 with default configuration. The server running Bind9 is a Intel Core 2 Due 2.93 GHz with 4 GB memory and Ubuntu Server 10.10. Any help will be appreciated. Jakob

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  • Why do I see router and not my real IIS?

    - by Tim Tom
    I am trying to access IIS through web but unable to do so. Basically I have a router (which functions as router and modem) that is given by ISP and I have another router connected to the router given by ISP. My ISP's router can be visited through 192.168.0.1 and the router that I connected to ISP's router can be visited through 192.168.1.1 Please see my ISP's router: As you can see I have DMZ enabled for my router of 192.168.1.1 Now please see my router of 192.168.1.1: As you can see I added a virtual server for port 80 where 192.168.1.125 is my private IP. I rebooted both of my modems an tried to visit my IP from: http://www.whatsmyip.org/ and after doing so, when I type my live IP I still see my router of 192.168.0.1 instead of my IIS. What am I missing? Note: I have disabled Firewall on both of the routers. Any help would be appreciated.

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  • Why do I see router and not my real IIS?

    - by Tim Tom
    I am trying to access IIS through web but unable to do so. Basically I have a router (which functions as router and modem) that is given by ISP and I have another router connected to the router given by ISP. My ISP's router can be visited through 192.168.0.1 and the router that I connected to ISP's router can be visited through 192.168.1.1 Please see my ISP's router: As you can see I have DMZ enabled for my router of 192.168.1.1 Now please see my router of 192.168.1.1: As you can see I added a virtual server for port 80 where 192.168.1.125 is my private IP. I rebooted both of my modems an tried to visit my IP from: http://www.whatsmyip.org/ and after doing so, when I type my live IP I still see my router of 192.168.0.1 instead of my IIS. What am I missing? Note: I have disabled Firewall on both of the routers. Any help would be appreciated.

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  • Where can I download copies of a Windows XP ISO image with Internet Explorer 6 or Internet Explorer 7 for VirtualBox?

    - by Andrew Arrow
    I have Windows 7 Professional hosting Ubuntu inside VirtualBox for my development machine. To test my site, I run Internet Explorer and hit my Ubuntu box. This works great for Internet Explorer 8, the default browser on this Windows machine. I also want to run another VM with a copy of Windows XP with Internet Explorer 6 or Internet Explorer 7. Where can I download ISO image files of old copies of Windows XP? I've looked in Internet Explorer Application Compatibility VPC Image and these only run in Virtual PC/XP Mode which won't run while VirtualBox is running. If I have to run VirtualBox (can't work without Ubuntu running the site), is there any way to test Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 from the same Windows 7 machine?

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  • Single file changed: intrusion or corruption?

    - by Michaël Witrant
    rkhunter reported a single file change on a virtual server (netstat binary). It didn't report any other warning. The change was not the result of a package upgrade (I reinstalled it and the checksum is back as it was before). I'm wondering whether this is a file corruption or an intrusion. I guess an intrusion would have changed many other files watched by rkhunter (or none if the intruder had access to rkhunter's database). I disassembled both binaries with objdump -d and stored the diff here: https://gist.github.com/3972886 The full dump diff generated with objdump -s is here : https://gist.github.com/3972937 I guess a file corruption would have changed either large blocks or single bits, not small blocks like this. Do these changes look suspicious? How could I investigate more? The system is running Debian Squeeze.

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