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• Win7 glass-like Aero feature - unable to enable

  - by user24752

  I have a 4 months old PC with Win7 Home Premium x64. Windows Experience Index is 5.4. Intel i5 processor 6GB memory nVidia GT220 video card. During games, Windows reported shortage of system resources, so switched the desktop back to "Windows 7 Basic" desktop theme. After game-over, I could switch back to the normal theme and enjoy all Aero eye-candies. However, lately the glass-like window transparency feature got disabled, and I found no ways to enable it again. There is a Troubleshouting option in Control Panel saying: "Find and fix problems with transparency and other visual effects". If I launch that, it does not find anything. Event viewer is full with the following warnings: The Desktop Window Manager is experiencing heavy resource contention. Scenario : The Desktop Window Manager responsiveness has degraded. Taskbar, window borders, etc, none of the other transparent features work, and I cannot turn them on. Any thoughts?

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• MMC could not create the snap in

  - by hossam-khalili

  hello i have windows SBS 2008 R2 when i try to open manager server or event viewer i got this message "MMC cannot create the snap in" can anyone help me thanks

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• Can't connect to LAN when connected to D-Link DIR-615

  - by Senseful

  I'm have a D-Link DIR-615 Wireless N 300 Router. I didn't use the CD it comes with to set up the network. Instead I configured it manually through the router's settings that are accessed via a web browser. The main changes I made are: Secured the router so that a password is required before clients can use the wireless internet. Broadcasting 802.11N only (not B or G). I can connect to the router just fine and I'm able to access the internet. The only problem is that I don't see any of the other computers in my LAN. When I try connecting to another Wi-Fi router that I have (which is connected to the same network), I can see all of the computer's on my LAN just fine. Therefore, I'm guessing that the reason I can't connect to the LAN is not a problem with my computer and is a problem with the router instead. I'm on a MacBook Air running Mac OS X 10.6.6. I tried contacting D-Link technical support, but they only try to help you if you have problems connecting to the internet. They aren't really concerned with problems that have to do with the accessing PC's on the same network.

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• Error 720 on VPN (PPTP) attempt

  - by Andy Shulman

  When I attempt to connect to a server running XP x64 (so essentially Server 2003) using a PPTP connection, it fails with client-side error Registering your computer on the network... Error 720: A connection to the remote computer could not be established. You might need to change the network settings for this configuration. and server-side error Event ID: 20050 The user WINSERV3\Andy connected to port VPN8-1 has been disconnected because no network protocols were successfully negotiated. I have configured the router to pass both TCP packets on 1723 and GRE packets. I have used Wireshark (filtering out ARP, UDP, and all TCP ports other than 1723) to observe the packets received by the server. Wireshark does not explicitly name any protocol GRE, but it does tell me the server sent and received TCP, PPTP, PPP LCP, PPP CHAP, PPP CBCP, and PPP IPCP. The connection seems to go wrong at packet 30, where the protocol is PPP LCP, with the payload of the packet being labeled "Protocol Reject". Obviously, this is going from server to client. This would seem to lead to the conclusion that there is something wrong with my client, which runs Windows 7 Ultimate x64. However, it is able to connect to my house's router, which runs the DD-WRT firmware and is thus a PPTP endpoint. I'm thoroughly at a loss. Please help!

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• Advice needed: ADSL and VPN for a small company

  - by Saajid Ismail

  Hi. I need advice on purchasing an ADSL modem/router for a small company. At the moment, we are using the iBurst Wireless service for internet connectivity. I have the iBurst desktop modem, which connects to my Netgear WNR2000 router via ethernet. I am using the Netgear WNR2000 to deploy a wireless network as well. I have also set up a VPN using Windows Server 2003, and enabled the VPN Passthrough settings on the Netgear router. I am able to connect to the office network remotely without difficulty. However the problem that I've read is that the Netgear WNR2000 only supports VPN passthrough for a single session. This is simply not good enough. I need to be able to support at least 3 concurrent VPN connections immediately, and up to 5 in the near future. Now I am cancelling my iBurst Wireless service and have just got my ADSL line installed. I have to purchase an ADSL modem, and now is a good time to think of future proofing my investment. I need a good ADSL modem, that will allow me to support at least 5 concurrent VPN connections, or more, without breaking the bank. My budget is about 150-200 USD. I believe that my current Netgear WNR2000 router will be useless, except maybe to extend my wireless network in the future by a bit. Is there a solution where I can still use my Netgear WNR2000 for WiFi, for e.g., by connecting a cheaper non-WiFi ADSL modem to the Netgear router? If not, then which WiFi-enabled ADSL modem/router that supports at least 5 VPN passthroughs can you recommend? To sum it up, I need an ADSL modem/router that is: ADSL & ADSL2+ compatible has built-in 802.11n 270/300mbps WiFi (if having this feature doesn't push the price up too much) supports at least 5 VPN connections using VPN passthrough EDIT: Answer 2.10 in the following FAQ has me a bit worried - What is VPN/multiple VPN Pass-through?

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• What's up with stat on MacOSX/Darwin? Or filesystems without names...

  - by Charles Stewart

  In response to a question I asked on SO, Give the mount point of a path, one respondant suggested using stat to get the device name associated with the volume of a given path. This works nicely on Linux, but gives crazy results on MacOSX 10.4. For my system, df and mount give: cas cas$ df Filesystem 512-blocks Used Avail Capacity Mounted on /dev/disk0s3 58342896 49924456 7906440 86% / devfs 194 194 0 100% /dev fdesc 2 2 0 100% /dev <volfs> 1024 1024 0 100% /.vol automount -nsl [166] 0 0 0 100% /Network automount -fstab [170] 0 0 0 100% /automount/Servers automount -static [170] 0 0 0 100% /automount/static /dev/disk2s1 163577856 23225520 140352336 14% /Volumes/Snapshot /dev/disk2s2 409404102 5745938 383187960 1% /Volumes/Sparse cas cas$ mount /dev/disk0s3 on / (local, journaled) devfs on /dev (local) fdesc on /dev (union) <volfs> on /.vol automount -nsl [166] on /Network (automounted) automount -fstab [170] on /automount/Servers (automounted) automount -static [170] on /automount/static (automounted) /dev/disk2s1 on /Volumes/Snapshot (local, nodev, nosuid, journaled) /dev/disk2s2 on /Volumes/Sparse (asynchronous, local, nodev, nosuid) Trying to get the devices from the mount points, though: cas cas$ df | grep -e/ | awk '{print $NF}' | while read line; do echo $line $(stat -f"%Sdr" $line); done / disk0s3r /dev ???r /dev ???r /.vol ???r /Network ???r /automount/Servers ???r /automount/static ???r /Volumes/Snapshot disk2s1r /Volumes/Sparse disk2s2r Here, I'm feeding each of the mount points scraped from df to stat, outputting the results of the "%Sdr" format string, which is supposed to be the device name: Cf. stat(1) man page: The special output specifier S may be used to indicate that the output, if applicable, should be in string format. May be used in combination with: ... dr Display actual device name. What's going on? Is it a bug in stat, or some Darwin VFS weirdness? Postscript Per Andrew McGregor, try passing "%Sd" to stat for more weirdness. It lists some apparently arbitrary subset of files from CWD...

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• Cognos 8.3 and Oracle11g

  - by hiddenkirby

  When i place ojdbc5.jar in the c8\webapps\p2pd\WEB-INF\lib directory... i receive the error below. And yes the content store is on an oracle 11g RAC database. I am running Oracle11g Client. Cognos version is 8.3 SP4. [Content Manager database connection] 1. [ ERROR ] The database connection failed. 2. [ ERROR ] Content Manager failed to start because it could not load driver "oracle.jdbc.driver.OracleDriver". Any help would be greatly appreciated.

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• "MMC cannot create the snap in "

  - by hossam-khalili

  hello i have windows SBS 2008 R2 when i try to open console manager or event viewer i got this message "MMC cannot create the snap in" can anyone help me thanks

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• Lenovo Wi-Fi Replacement

  - by user22910

  I recently got my T500 with a very poor signal Wi-Fi, Thinkpad BGN, a Realtek chipset. I would like to replace my Wi-Fi card with either the Intel WiFi Link 5100 or 5300. However, I read somewhere that Lenovo specfically "whitelist" their Wi-Fi cards to only work with their laptops. I could not find any of the Intel Wi-Fi, moreover any Wi-Fi cards on the Lenovo site. So, I went to hunt around in Amazon and found several sellers. Plus what sort of card do I require? There is a difference between mini cards and the full sized card, though I do not know which one my laptop supports. Here are the specifications for my laptop: http://privatepaste.com/8b0537bce0 I would like to have confirmation which one of these specific cards as posted below will work on my laptop (or the one you recommend to have): Intel Wifi Link 5300 Intel WiFi Link 5100 - Network adapter - PCI Express Mini Card - 802.11b, 802.11a, 802.11g, 802.11n (draft 2.0) Intel WiFi Link 5100 - Network adapter - PCI Express Half Mini Card - 802.11b, 802.11a, 802.11g, 802.11n (draft) Intel WiFi Link 5300 - Network adapter - PCI Express Mini Card - 802.11b, 802.11a, 802.11g, 802.11n (draft)

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• Embedded Spotlight does not function in Outlook 2011

  - by syntaxcollector

  I have a rather strange problem. I manage a network of about 35 Mac, and we all recently switched from Mail.app to Outlook 2011 (Please don't debate this, I've already had this conversation ad nauseum) We are using network home directories (NHD) server from a Windows file server over the SMB protocol. The problem I'm having is Spotlight does not function inside of Outlook. But ONLY inside of Outlook. The global Spotlight can find all email and contacts with Outlook, but the embedded Spotlight cannot. As a test, I took one of my users and switched them from a network home directory to a portable home directory (PHD) (this means the home folder was copied to the local hard drive). This resulted in a working Spotlight within Outlook, as soon as I switched the user back to an NHD, however, it stopped working. I have already tried erasing the Spotlight index and killing the process to force re-indexing. I have exhausted all Spotlight troubleshooting, and since the global is working that is obviously not the issue. I believe it has something to do with the Spotlight plugin Microsoft wrote that is located in /Library/Spotlight. Any ideas?

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• Mac Management and Security

  - by Bart Silverstrim

  I was going through some literature on managing OS X laptops and asked someone some questions about usage scenarios when using the MacBooks. I asked someone more knowledgeable than I about whether it was possible for my Mac to be taken over if I were visiting another site for a conference or if I went on a wifi network at a local coffee house with policies from an OS X Server with workgroup manager (either legit for the site or someone running a version of OS X Server on hardware they have hidden somewhere on the network), which apparently could be set up to do things like limit my access to Finder or impose other neat whiz-bang management features. He said that it is indeed possible for it to happen as it would be assigned via the DHCP server and the OS X server would assume my Mac is a guest and could hand out restrictions and apparently my Mac will happily accept them without notifying me or giving me an option, unlike Windows which I believe would need to be joined to a domain before it becomes "managed" by Active Directory. So my question is as network admins and sysadmins with users traveling with MacBooks, is there a way to reasonably protect your users from having their machines hijacked without resorting to just turning off networking all the time? Or isn't this much of a security hazard? What threat does this pose to the road warriors in your businesses?

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• When I log on to my company desktop, I log on to a domain. How is this domain name installed?

  - by learnerforever

  Hi, When I have to work on my machine in company, I have noticed that I log on to a domain (named on the basis of company name) and not really on that computer. From, what I understand, this has a few advantages, the primary being that I just need one password for the domain and can work through any of the machines in company. My questions are : What software on desktop/network have to be installed so that the desktop recognizes and gives me option of logging into a domain. I would guess that a software can be installed on desktop, and there we can configure the IP address of domain server of company and port number, which handles authentication. Is this correct? This takes me to another question that how are softwares installed on end machines in a company. Going to each machine physically and installing looks very unweildy from administrator point of view. An obvious solution would be to install softwares (and updates) over network. My question on this are: What protocols,keywords come into picture when administrator installs OS,softwares,updates from his administrator machine to end machine through network. Thanks,

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• Split horizon, route filtering, and having RIPv2 announce a non-attached route to host

  - by Paul

  Routers A, B & C live at 10.1.1.1, 10.1.1.2 and 10.1.1.3 on a /24 metro Ethernet subnet. Each router also has its own private subnet on another interface. Router B's private subnet links thru a firewall to a 10.20.20.0 network at another organization. Router B redistributes to A and C several static routes for hosts on 10.20.20.0. However, a new host 10.20.20.5/32 must be reached via a different path that goes through router C. I know that C can advertise this host-based route with no problem, but I'd like to keep all my 10.20.20.x static routes in one place. So, how can B tell A via RIPv2 to send packets for 10.20.20.5/32 to C? So far it looks like I need no ip split-horizon on router B's 10.1.1.2 interface, perhaps because B has already learned from C other routes with a next hop of 10.1.1.3. But how does RIPv2 split horizon with no auto-summary and network 10.0.0.0 really work? If B learns a route to ANY 10.x.x.x network or host from A or C, is that enough for split horizon to keep it from redistributing ip route 10.20.20.5 255.255.255.255 10.1.1.3? And if I want to suspend split horizon only for this one new host, how do I filter out the mess of regurgitated routes that B advertises when I try no ip split-horizon? Thanks much.

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• Where should CentOS users get /usr/share/virtio-win/drivers for virt-v2v?

  - by Philip Durbin

  I need to migrate a number of virtual machines from VMware ESX to CentOS 6 KVM hypervisors. Ultimately, I wrote an RPM spec file that solved my problem at https://github.com/fasrc/virtio-win/blob/master/virtio-win.spec but I'm not sure if there's another RPM in base CentOS or EPEL (something standard) I should be using instead. Originally, I was getting this "No root device found in this operating system image" error when attemting to migrate a Window 2008 VM. . . [root@kvm01b ~]# virt-v2v -ic 'esx://my-vmware-hypervisor.example.com/' \ -os transferimages --network default my-vm virt-v2v: No root device found in this operating system image. . . . but I solved this with a simply yum install libguestfs-winsupport since the docs say: If you attempt to convert a virtual machine using NTFS without the libguestfs-winsupport package installed, the conversion will fail. Next I got an error about missing drivers for Windows 2008. . . [root@kvm01b ~]# virt-v2v -ic 'esx://my-vmware-hypervisor.example.com/' \ -os transferimages --network default my-vm my-vm_my-vm: 100% [====================================]D virt-v2v: Installation failed because the following files referenced in the configuration file are required, but missing: /usr/share/virtio-win/drivers/amd64/Win2008 . . . and I resolved this by grabbing an iso from Fedora at http://alt.fedoraproject.org/pub/alt/virtio-win/latest/ as recommended by http://www.linux-kvm.org/page/WindowsGuestDrivers/Download_Drivers and building an RPM from it with this spec file: https://github.com/fasrc/virtio-win/blob/master/virtio-win.spec Now, virt-v2v exits without error: [root@kvm01b ~]# virt-v2v -ic 'esx://my-vmware-hypervisor.example.com/' \ -os transferimages --network default my-vm my-vm_my-vm: 100% [====================================]D virt-v2v: my-vm configured with virtio drivers. [root@kvm01b ~]# Now, my question is, rather that the virtio-win RPM from the spec file I wrote, is there some other more standard RPM in base CentOS or EPEL that will resolve the error above? Here's a bit more detail about my setup: [root@kvm01b ~]# cat /etc/redhat-release CentOS release 6.2 (Final) [root@kvm01b ~]# rpm -q virt-v2v virt-v2v-0.8.3-5.el6.x86_64 See also Bug 605334 – VirtIO driver for windows does not show specific OS: Windows 7, Windows 2003

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• Puppet: array in parameterized classes VS using resources

  - by Luke404

  I have some use cases where I want to define multiple similar resources that should end up in a single file (via a template). As an example I'm trying to write a puppet module that will let me manage the mapping between MAC addresses and network interface names (writing udev's persistent-net-rules file from puppet), but there are also many other similar usage cases. I searched around and found that it could be done with the new parameterised classes syntax: if implemented that way it should end up being used like this: node { "myserver.example.com": class { "network::iftab": interfaces => { "eth0" => { "mac" => "ab:cd:ef:98:76:54" } "eth1" => { "mac" => "98:76:de:ad:be:ef" } } } } Not too bad, I agree, but it would rapidly explode when you manage more complex stuff (think network configurations like in this module or any other multiple-complex-resources-in-a-single-config-file stuff). In a similar question on SF someone suggested using Pienaar's puppet-concat module but I doubt it could get any better than parameterised classes. What would be really cool and clean in the configuration definition would be something like the included host type, it's usage is simple, pretty and clean and naturally maps to multiple resources that will end up being configured in a single place. Transposed to my example it would be like: node { "myserver.example.com": interface { "eth0": "mac" => "ab:cd:ef:98:76:54", "foo" => "bar", "asd" => "lol", "eth1": "mac" => "98:76:de:ad:be:ef", "foo" => "rab", "asd" => "olo", } } ...that looks much better to my eyes, even with 3x options to each resource. Should I really be passing arrays to parameterised classes, or there is a better way to do this kind of stuff? Is there some accepted consensus in the puppet [users|developers] community? By the way, I'm referring to the latest stable release of the 2.7 branch and I am not interested in compatibility with older versions.

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• How to get headphones and speakers working at the same time?

  - by Borek

  I have a Gigabyte P55-UD3 motherboard which comes with a Realtek sound card and audio header for the front panel. My headset is permanently connected to the front panel (mic in, headphones in) and I also have speakers connected at the rear of the computer. What I want to achieve is that both the headphones and the speakers work at the same time. On my old PC with Realtek, I was able to do this by clicking "Device advanced settings" in the Realtek HD Audio Manager and then clicking "Make front and rear output devices playback two different audio streams simultaneously" and then doing some reassigning of front/rear settings in the Realtek Audio Manager (can't remember the details). But that doesn't seem to be working now - either the speakers play sounds or the headphones, not both at the same time. To pose the question differently, Windows plays the sounds on the "default device". I'd like to make both headphones and the speakers kind of like the default devices.

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• just curious if anybody every tried this- hyper-v r2

  - by tony roth

  I have a server that san boots that I want to p2v. I have many options disk2vhd, scvmm etc but I was thinking about cloning the lun (flexclone, netapp) presenting it to my hyper-v r2 server. Within the hv manager do a create new disk then have it copy the cloned lun to a vhd file. Then do the bcdedit\bootsect stuff to it. Should work right? I'm also curious if anybodys booting vhd's that are on bootable luns? I've booted native vhd's just fine was just curious about the running them off a bootable lun. I think that this has quite a few advantages like instant p2v etc.. any thoughts on this? hmm dang as I was typing this I realized that I should not use the hv manager new disk copy routine, I should just disk2vhd the mounted lun. This has advantages in that it should be a lot faster!! thanks

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• Linux Kernel Packet Forwarding Performance

  - by Bob Somers

  I've been using a Linux box as a router for some time now. Nothing too fancy, just enabling forwarding in the kernel, turning on masquerading, and setting up iptables to poke a few holes in the firewall. Recently a friend of mine pointed out a performance problem. Single TCP connections seem to experience very poor performance. You have to open multiple parallel TCP connections to get decent speed. For example, I have a 10 Mbit internet connection. When I download a file from a known-fast source using something like the DownThemAll! extension for Firefox (which opens multiple parallel TCP connections) I can get it to max out my downstream bandwidth at around 1 MB/s. However, when I download the same file using the built-in download manager in Firefox (uses only a single TCP connection) it starts fast and the speed tanks until it tops out around 100 KB/s to 350 KB/s. I've checked the internal network and it doesn't seem to have any problems. Everything goes through a 100 Mbit switch. I've also run iperf both internally (from the router to my desktop) and externally (from my desktop to a Linux box I own out on the net) and haven't seen any problems. It tops out around 1 MB/s like it should. Speedtest.net also reports 10 Mbits speeds. The load on the Linux machine is around 0.00, 0.00, 0.00 all the time, and it's got plenty of free RAM. It's an older laptop with a Pentium M 1.6 GHz processor and 1 GB of RAM. The internal network is connected to the built in Intel NIC and the cable modem is connected to a Netgear FA511 32-bit PCMCIA network card. I think the problem is with the packet forwarding in the router, but I honestly am not sure where the problem could be. Is there anything that would substantially slow down a single TCP stream?

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• Intranet Design and Development Book Recommendations

  - by Russ Giddings

  Hi All, Can anyone recommend any good books on Intranet planning and implementation for the business professional / manager? Thanks Russell

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• Using Virtualbox Bridge Networking fails connection from Guest OS to Oracle XE running on Host

  - by Licheng

  I am trying to make a JDBC connection from a VirtualBox Ubuntu Guest OS to an Oracle XE database running o Host. However, the connection is refused. Here are the details of my environment: VirtualBox: 4.1.4 Host OS: Windows 7 Guest OS: Ubuntu server 11.4 Networking mode: Bridged network Oracle XE database running on Host Issue: WebLogic server runs on the Ubuntu virtualbox. It attempts to connect to an Oracle XE database running on the Host OS (windows 7) with listening port 1521. On the Guest OS (Ubuntu), I am able to ping the Host computer from the Guest OS. However, when I configured a JDBC data source on the WebLogic server on the Guest OS to connect to the Oracle XE, connection took a long time, and eventually I received an "IO Exception: The Network Adapter could not establish the connection". When I tried "telnet host-ip 1521", no connection was established. With Bridge networking, I can make bi-directional connections between the host and the guest OS (e.g. connection through ssh and ftp). Is there anything I missed in the setup of Bridge networking and the guest/host OS? Note that I was able to make the same connection within a normal networking environment (i.e. not using virtual box). I am not sure whether Bridge networking is a good option for the work described above. Should I use host-only networking mode? If so, any specific configurations I need to perform? I read through the Virtual box document on setting up the host-only network, however, it lacks of details. I followed the procedures described in the manual, and couldn't even connect to the host. Could some experts here enlighten me on this issue? Much appreciated. Licheng

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• Windows file sharing with a private LAN when a public VPN is connected?

  - by netvope

  OS: Windows Vista My LAN interface is configured as a "private network". I want to have all the sharing and discovery features (Network Discovery, File Sharing, Public Folder Sharing, Printer Sharing, Password Protected Sharing, and Media Sharing), so I enabled them all. My VPN interfaces are configured as "public networks", and I do NOT want to have any of the above features. Now the problem is that if I disabled these sharing features while a VPN is connected, it affects both interfaces. I guess the Network and Sharing Center is probably an oversimplified tool that may not support multiple interfaces. Where can I tell Windows to enable sharing features for the private networks and not the public networks? For file sharing, I think I can disable "File and Printer Sharing for MS Networks" in each of the VPNs' properties. However, I will need to disable it every time I add a new VPN. Moreover, I can't find how to disable Media Sharing by this way. If this can be more easily done in Windows XP or 7, please let me know.

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• Enable anonymous access to report builder in reporting services 2008

  - by ilivewithian

  I have a 2008 reporting services server installed on windows 2003 server. I am trying to allow anonymous access to the report builder folder so that my users do not have to select the remember password option when they login, if they are wanting to use the report builder. All I have found so far is that I should be able to do this with the IIS manager, but that only seems to work for reporting services 2005. Reporting services 2008 does not show up in the IIS manager, enabling anonymous access seems to be hidden somewhere else. How do I enable anonymous access to report builder in reporting services 2008?

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• Middle Mouse Button does not work in XFCE / Arch Linux

  - by Alp

  I have the XFCE desktop manager installed on my Arch Linux system. With E17 (Enlightenment desktop manager) i had no problems with my mouse: all buttons worked correctly out of the box. But in XFCE my middle mouse button does not fire an event at all (no output with xev). Evdev seems to identify my mouse correctly (Razer Deathadder) because it echoes its name in the xorg logs. I have no idea what could cause this and how to debug the problem. I start both e17 and xfce with startx. Here is my ~/.xinitrc: exec startxfce4 --with-ck-launch #exec enlightenment-start

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• How to point a Wordpress registered domain to github pages?

  - by Dave Castillo

  I'm trying to use a CNAME file in my git hub project to point to my wordpress registered domain name. E.g. example.com to point to myusername.github.com. I read Github-Setting up a custom domain and it tells me to point the domain to their servers: For a TLD like example.com, you should use an A record pointing to 204.232.175.78: But in the wordpress domain manager I only get the option to specify a nameserver like this: NS1.WORDPRESS.COM NS2.WORDPRESS.COM Inputting 204.232.175.78 in the wordpress manager give me an "invalid TLD." What am I doing wrong and how can I troubleshoot this issue?

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• How to collect the performance data of a server during an unreachable/down period using Nagios?

  - by gsc-frank

  Some time services and host stop responding due to a poor server performance. I mean, if for some reason (could be lot of concurrency services access, a expensive backup execution on the server or whatever that consume tons of server resources) a server performance is very degraded, that could lead that the server isn't capable to establish any "normal network communication" (without trigger whatever standards timeouts defined for such communication). Knowing host's performance data (cpu, memory, ...) in case of available during that period (host is not down and despite of its performance degradation still allow plugins collect performance data) could be very useful for sysadmin to try to determine what cause the problem, or at least, if the host performance was good and don't interfered at all in the host/service down. This problem could be solved using remote active (NRPE) or remote passive (NSCA) if such remote solutions could store (buffered) perf data to be send to central Nagios server when host performance or network outage allow it. I read the doc of both solutions and can't find any reference to such buffer mechanism neither what happened in case that NSCA can't reach Nagios server. Any idea of how solve this lack of info? so useful for forensic analysis. EDIT: My questions isn about which tools I can use to debug perf problems or gather perf data to analysis, but is about how collect (using Nagios) host perf data even during a network outage for its posterior analysis (kind of forensic analysis). The idea is integrate such data to Nagios graphers like pnp4nagios and NagiosGrapther. I know that I could install tools like Cacti in each of my host, and have a kind of performance data collection redundancy, but I really want avoid that and try to solve all perf analysis requirements with one tools: Nagios

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