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• Can't ping devices by IP address for devices allocated IPs by DHCP

  - by GiddyUpHorsey

  I have a home network with a Trendnet wireless router and a Windows Domain. The Domain Controller/DNS server is a Windows 2000 Server and is configured to forward queries to DNS servers provided by the ISP. The router provides DHCP and is configured with the Windows 2000 Server as the DNS server. The network has been set up for a couple of years and usually works fine. When I connect iPhones to the network over WiFi, the router can ping the iPhones through its browser based admin interface, but Windows machines that are part of the Windows Domain cannot. A laptop was connected to the network over WiFi that wasn't joined to the domain and it could see the iPhones. The router UI shows that the laptop has a reserved IP allocated via DHCP. All machines either have a static or DHCP allocated IP on the 192.168.0.* subnet. Router - 192.168.0.1 - Static - Wired Windows Domain Controller - 192.168.0.8 - Static - Virtual Windows 7 Workstation - 192.168.0.200 - DHCP Auto - Wired VMWare ESXi Host - 192.168.0.201 - Static? - Wired iPhone 1 - 192.168.0.202 - DHCP Auto - WiFi iPhone 2 - 192.168.0.203 - DHCP Auto - WiFi Windows Vista Laptop - 192.168.0.204 - DHCP Reserved - WiFi Using the Windows 7 machine (200), I try to ping each machine and the only DHCP machine that responds is itself. The other DHCP machines fail with Reply from 192.168.0.200: Destination host unreachable.. Using nslookup fails with *** domain.controller.name can't find 192.168.0.203: Non-existent domain. Using the Windows 2000 Domain Controller (8), I try to ping each machine and the only DHCP machine that responds is the Windows 7 machine (200). Pinging the other DHCP machines fails with Request timed out.. Using nslookup also fails with *** domain.controller.name can't find 192.168.0.203: Non-existent domain. Using the iPhone 2 (203), I try to ping (Network Ping Lite) the machines with static IP addresses and that works fine. When I try to ping the Windows 7 machine (200) it is unable to get a response. How do I configure the DNS server/Windows Domain/Router properly so that the Windows Domain machines can see the IPs allocated via DHCP?

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• HOSTS ignored when disconnected [closed]

  - by Synetech

  Problem I’m seeing a strange and extremely frustrating problem. Any system that is not connect to the Internet (Windows 7 shows the no Internet access icon because it cannot constantly ping Microsoft’s servers) cannot even access locally hosted servers. Hypothesis The problem appears to be that the HOSTS file is not being used to resolve DNS entries when there are no active NICs. Tests / Reproduction You can reproduce it as so: Disconnect a system from the Internet (make sure all wired and wireless connections are disconnected). If necessary, add an entry to the HOSTS file (e.g., 127.0.0.1 foobar or 127.0.0.1 foobar.com) Open a command-prompt Type ping foobar or ping foobar.com Observations The screenshots below show a clear and demonstrative example. In the first snap, a laptop is connected to a router wirelessly. The HOSTS file has only three entries and they resolve just fine. In the second snap, the wireless radio is turned off, so the entries in the HOSTS file are ignored. Moreover, notice that pinging localhost still works even without any active NICs (as does 127.0.0.1), but it is using the IPv6 address (must be hard-coded). You can see the same results in Windows XP with no IPv6 installed, so it has nothing to do with IPv6. I tried pining what should have resolved to 127.0.0.1 while the desktop system (with no wireless NICs) was connected via its Ethernet adapter, then again after pulling the cable from the router and waiting a couple of seconds, then again after plugging the cable back in. The same thing happens if instead of pulling out the cable, the NIC is disabled through software (the [Disable] button in the NIC’s Status dialog or via Device Manager). Conclusions It looks as though the HOSTS file is only being read and used if there is an active NIC, otherwise it is being ignored. This makes some sense in that if there are no active network adapters, then presumably there will not be any network activity, and thus no need to resolve host names via the HOSTS file. This assumption is specious however because it precludes locally hosted virtual servers. The HOSTS file should be used regardless of external DNS server connectivity, otherwise you cannot use simple/consistent/testing-production names for locally hosted servers when not connected to the Internet (for example web servers; help servers for Visual Studio, 3dsmax, etc.; and so on). Question Does anyone know how to force Windows to use the HOSTS file even if there are no active NICs? Appendix Figure 1: While the wireless NIC is connected to the router (the cable-modem is in standby, so no external Internet connectivity). Figure 2: With the wireless radio turned off (the Ethernet port is not unconnected in both cases). Figure 3: Same results in XP with no IPv6

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• Web Site Serving, Cloud-Computing, oh, my

  - by Frank

  I'm planning a software based service. To give it a bit of context (type of traffic), assume it similar to facebook in nature (with a little GitHub thrown in). I've been trying to understand my different hosting options. I've been using a shared host with GoDaddy for years just fine. I currently host a Wordpress web site there and I've not had any problems. Quite frankly, they've taken good care of me. However, the nature of a shared hosting environment is limited in nature. For example, I can't do anything but host a web site there. For example, I can not run a Mercurial server. Last time I attempted to build a web application with the intention of eventually launching it via GoDaddy, I ran in to all sorts of troubles because it was shared-hosted. Assembly issues, etc. At the time, the cost and time sank my project. (The lack of direct access was also frustrating.) (to be fair to godaddy, this was over 3 years ago) I've been looking at Rackspace or Amazon as a possible cloud solution but it seems to be just processing power and bandwidth (and an OS). From what I understand, I'd need to get Apache and MySQL Working on my own. The way cloud hosting is priced, however, seems appealing. I figure my final option might be to use a virtual private host. I think this would be more flexible than a shared-host site but less scalable than a cloud based server. So, I guess my question is what is an appropriate solution for someone who intends to build a web application service? I figure that I need to establish a hosting environment now rather than later so I can plan to effectively use the environment. I'd prefer to be fairly economical to start out with. I really can't afford to pay $999 (or even $99) while I build up the site and get the core functionality online but at the same time, I'd like to have the selected environment grow as needed. Thank you.

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• keyboard mappings are totally screwed after updating to kde4

  - by zeonglow

  I recently upgraded from KDE 3.5 to KDE 4, and I have been having weird issues with my keyboard. In one of the virtual consoles e.g. when I press ctrl + alt 1 , I can type perfectly, but in KDE, several of the number keys don't work, the left and right arrows don't work either. When I press the right arrow key in xev I get this: KeyRelease event, serial 34, synthetic NO, window 0x3600001, root 0x6f, subw 0x0, time 903459, (111,55), root:(115,836), state 0x10, keycode 114 (keysym 0x1008ff11, XF86AudioLowerVolume), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False When I press the '3' key it toggles my Bookmarks toolbar in Firefox, in xev I get this: KeyPress event, serial 34, synthetic NO, window 0x3600001, root 0x6f, subw 0x0, time 999968, (94,115), root:(98,896), state 0x10, keycode 12 (keysym 0x1008ff30, XF86Favorites), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 34, synthetic NO, window 0x3600001, root 0x6f, subw 0x0, time 1000032, (94,115), root:(98,896), state 0x10, keycode 12 (keysym 0x1008ff30, XF86Favorites), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False As this is deeper down, changing the type of keyboard in the KDE meun's has no effect. I'm slowly beginning to wade through the mountains of documentation about the X keyboard model, but there has to be a better way. Does anyone no what it is? Edit: 1234567890 ! after deleting the entire .kde folder. but only until I change the Keyboard settings from the "system settings" applet, then its hosed full time. Regardless of what I set the settings too. (restore to default settings doesn't) 2nd Edit: I'm using Gentoo AMD64, I was upgrading from KDE 3.5 KDE 4.2. I think I had manual settings before, although I didn't change anything. I was originally running KDE without HAL until that stop working a year or so ago. The only customisation I made was to set the multimedia keys to control Amarok. 3rd Edit $ grep xkb /var/log/Xorg.0.log (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "evdev" (**) Option "xkb_layout" "us" (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "evdev" (**) Option "xkb_layout" "us" Xorg.0.log has this to say: (WW) AllowEmptyInput is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled. (WW) Disabling Mouse1 (WW) Disabling Keyboard1 My Xorg.conf has this in it. Identifier "Keyboard1" Driver "kbd" Option "AutoRepeat" "500 30" # Specify which keyboard LEDs can be user-controlled (eg, with xset(1)) Option "XkbRules" "xorg" Option "XkbModel" "pc105" Option "XkbLayout" "gb"

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• Python install issue on Mac OS X

  - by Michael Waterfall

  I have been using the standard python that comes with OS X Lion (2.7.2) but I wanted to build a UCS-4 version to handle 4-byte unicode characters better. I had already installed pip and packages like pytz, virtualenv and virtualenvwrapper, etc., and these are installed in /Library/Python/2.7/site-packages. My $PATH is /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin. To build a new version of python on the machine (outside of any project specific virtual environments, that will come later), I followed the instructions on this article and managed to build it in /usr/local/bin. The problem is that when I launched a new bash window, I got the following virtualenvwrapper error: Traceback (most recent call last): File "<string>", line 1, in <module> ImportError: No module named virtualenvwrapper.hook_loader virtualenvwrapper.sh: There was a problem running the initialization hooks. If Python could not import the module virtualenvwrapper.hook_loader, check that virtualenv has been installed for VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python and that PATH is set properly. The instructions said to move /usr/local/bin to the top of the /etc/paths file, and since then I've noticed some strange issues. I installed pip into /usr/local/bin and now I have assumed that since I'm working in /usr/local/bin, and the newly installed python's site packages is now located in /usr/local/lib/python2.7/site-packages, when I do pip freeze, it should be empty as nothing is installed there yet. However, pip freeze still reports things installed in the old (OS X) site-packages folder. Here's some info after the build: $ which python /usr/local/bin/python $ which pip /usr/local/bin/pip $ echo $PATH /usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin When I uninstall a python package with pip, it removes it from the old site-packages folder as expected. When I install it again, instead of installing it in /usr/local/lib/python2.7/site-packages, it installs it in /Library/Python/2.7/site-packages (verified by attempting to install it again and receiving Requirement already satisfied (use --upgrade to upgrade): pytz in /Library/Python/2.7/site-packages ). How is it getting that path for the old site-packages folder? Why won't it install it in the correct location for the python install it's using? I'm getting several other issues since promoting /usr/local/bin but I think if I understand this I'll be able to get somewhere. Can anyone see what's happening? If you need any more info I'll be happy to provide it.

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• My virtualhost not working for non-www version

  - by johnlai2004

  I have a development web server (ubuntu + apache) that can be accessed via the url glacialsummit.com. For some reason, http://www.glacialsummit.com serves pages from the /srv/www/glacialsummit.com/ directory, but http://glacialsummit.com serves pages from the /var/www/ directory. Here's what some of my virtualhost config files look like filename: /etc/apache2/sites-enabled/glacialsummit.com <VirtualHost 97.107.140.47:80> ServerAdmin [email protected] ServerName glacialsummit.com ServerAlias www.glacialsummit.com DocumentRoot /srv/www/glacialsummit.com/public_html/ ErrorLog /srv/www/glacialsummit.com/logs/error.log CustomLog /srv/www/glacialsummit.com/logs/access.log combined </VirtualHost> <VirtualHost 97.107.140.47:443> ServerAdmin [email protected] ServerName glacialsummit.com ServerAlias www.glacialsummit.com DocumentRoot /srv/www/glacialsummit.com/public_html/ ErrorLog /srv/www/glacialsummit.com/logs/error.log CustomLog /srv/www/glacialsummit.com/logs/access.log combined SSLEngine on SSLCertificateFile /etc/ssl/localcerts/www.glacialsummit.com.crt SSLCertificateKeyFile /etc/ssl/localcerts/www.glacialsummit.com.key <FilesMatch "\.(cgi|shtml|phtml|php)$"> SSLOptions +StdEnvVars </FilesMatch> <Directory /usr/lib/cgi-bin> SSLOptions +StdEnvVars </Directory> BrowserMatch ".*MSIE.*" \ nokeepalive ssl-unclean-shutdown \ downgrade-1.0 force-response-1.0 </VirtualHost> <VirtualHost 97.107.140.47:80> ServerAdmin [email protected] ServerName project.glacialsummit.com ServerAlias www.project.glacialsummit.com DocumentRoot /srv/www/project.glacialsummit.com/public_html/ ErrorLog /srv/www/project.glacialsummit.com/logs/error.log CustomLog /srv/www/project.glacialsummit.com/logs/access.log combined </VirtualHost> ## i have many other vhosts that work fine in this file filename /etc/apache2/sites-enabled/000-default <VirtualHost 97.107.140.47:80> ServerAdmin webmaster@localhost DocumentRoot /var/www <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> filename: /etc/apache2/ports.conf NameVirtualHost 97.107.140.47:80 Listen 80 <IfModule mod_ssl.c> # SSL name based virtual hosts are not yet supported, therefore no # NameVirtualHost statement here Listen 443 </IfModule> How do I make http://glacialsummit.com serve web pages from /srv/www/glacialsummit.com/public_html just like http://www.glacialsummit.com?

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• Setting up SSL on apache on linux ubuntu

  - by ThomasReggi

  I'm trying to get SSL to run on my apache web server. I do not have the DNS for the domain setup yet is that an issue? How do I setup SSL on my web server? When I start apache it fails. root@vannevar:/etc/apache2/ssl# service apache2 start * Starting web server apache2 Action 'start' failed. The Apache error log may have more information. The log stats that it's unable to read the certificate. [Thu Jun 28 15:01:02 2012] [error] Init: Unable to read server certificate from file /etc/apache2/ssl/www.example.com.csr [Thu Jun 28 15:01:02 2012] [error] SSL Library Error: 218529960 error:0D0680A8:asn1 encoding routines:ASN1_CHECK_TLEN:wrong tag [Thu Jun 28 15:01:02 2012] [error] SSL Library Error: 218595386 error:0D07803A:asn1 encoding routines:ASN1_ITEM_EX_D2I:nested asn1 error The contents of /etc/apache2/httpd.conf ServerName [SERVERIP] The contents of /etc/apache2/ports.conf # If you just change the port or add more ports here, you will likely also # have to change the VirtualHost statement in # /etc/apache2/sites-enabled/000-default # This is also true if you have upgraded from before 2.2.9-3 (i.e. from # Debian etch). See /usr/share/doc/apache2.2-common/NEWS.Debian.gz and # README.Debian.gz NameVirtualHost [SERVERIP]:443 NameVirtualHost *:80 Listen 80 <IfModule mod_ssl.c> # If you add NameVirtualHost *:443 here, you will also have to change # the VirtualHost statement in /etc/apache2/sites-available/default-ssl # to <VirtualHost *:443> # Server Name Indication for SSL named virtual hosts is currently not # supported by MSIE on Windows XP. Listen 443 </IfModule> <IfModule mod_gnutls.c> Listen 443 </IfModule> The contents of /etc/apache2/sites-available/www.example.com <VirtualHost *:80> ServerAdmin [email protected] ServerName example.com ServerAlias www.example.com DocumentRoot /srv/sites/example.com/public/ ErrorLog /srv/sites/example.com/logs/error.log CustomLog /srv/sites/example.com/logs/access.log combined </VirtualHost> <VirtualHost [SERVERIP]:443> SSLEngine On SSLCertificateFile /etc/apache2/ssl/www.example.com.csr SSLCertificateKeyFile /etc/apache2/ssl/www.example.com.key SSLCACertificateFile /etc/apache2/ssl/comodo.crt ServerAdmin [email protected] ServerName example.com ServerAlias www.example.com DocumentRoot /srv/sites/example.com/public/ ErrorLog /srv/sites/example.com/logs/error.log CustomLog /srv/sites/example.com/logs/access.log combined </VirtualHost>

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• DVD Drive Failing on Windows 7

  - by Seth Spearman

  Hello, I have x64 Windows 7 running on an ASUS M50VM. The DVD drive works completely unreliably if not at all. But the story is not that simple so bear with me...here are the gory details. When I first got the machine it came with Windows XP and I upgraded it to Windows Vista X64 and the DVD worked fine. When Windows 7 RC2 came out I tried it on a Virtual Machine and I liked it so much that I upgraded the machine to Win7 RC1. The DVD worked fine. Of course, RC1 was going to start spontaneously rebooting, so when Windows 7 was released I DID A CLEAN INSTALL of Windows 7. Just to clarify...by clean install I mean I did a FORMAT of the HARD DRIVE and INSTALLED it from scratch. EVER since then the DVD mostly doesn't work. I can sometime read from disk but that will often hang. (Please see my description below of HANG for details.) CD or DVD writes ALWAYS fail with a HANG (I have done a successful write only one time.) Here is what I mean by HANG... *Explorer Window is unresponsive. *Any software accessing the DVD drive is unresponsive. *The DVD tray will not eject. *Using a paper clip will eject but the disk is usually spinning real hard. *Attempting to shut down windows will fail. I have waited as long as ten minutes but the whole OS seems to hang. I do a hard shutdown. *Sometimes accessing the DVD (when it does not cause a HANG) will still fail and the device will actually seem to disappear from the system until I reboot. A couple of other things. It is NOT a hardware failure. It is the Windows OS. I know this because I swapped out my DVD drive with a friend with the same model...his machine is fine (he is still running Vista X64) and my machine still fails. For what it is worth. I swapped out my primary disk with the INTEL 160GB SSD. EDIT Here is what System Information shows about my DVD drive Drive D: Description CD-ROM Drive Media Loaded No Media Type DVD Writer Name HL-DT-ST DVDRAM GSA-T50N ATA Device Manufacturer (Standard CD-ROM drives) Status OK Transfer Rate -1.00 kbytes/sec SCSI Target ID 0 PNP Device ID IDE\CDROMHL-DT-ST_DVDRAM_GSA-T50N________________RR04____\5&2B5B7F1D&0&1.0.0 Driver c:\windows\system32\drivers\cdrom.sys (6.1.7600.16385, 144.00 KB (147,456 bytes), 7/13/2009 7:19 PM) Any ideas? HELP! Seth B Spearman

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• networking tunnel adapter connections?

  - by Karthik Balaguru

  I understand that Tunnel Adapter LAN is for encapsulating IPv6 packets with an IPv4 header so that they can be sent across an IPv4 network. Few queries popped up in my mind based on this :- If i do 'ipconfig', Apart from ethernet adapter LAN details, I get a series of statments as below - Tunnel adapter Local Area Connection* 6 Tunnel adapter Local Area Connection* 7 Tunnel adapter Local Area Connection* 12 Tunnel adapter Local Area Connection* 13 Tunnel adapter Local Area Connection* 14 Tunnel adapter Local Area Connection* 15 Tunnel adapter Local Area Connection* 16 Except for the *16, all the other Tunnel Adapter Local Area Connections show Media Disconnected. Why is the numbering for the Tunnel adapter LAN not sequential? It is like 6, 7, 12, 13, 14, 15, 16. A strange numbering scheme! I tried to figure it out by thinking of some arithmetic series. But, it does not seem to fit in. There is a huge gap between 7 and 12. Any ideas? What is the need for so many Tunnel Adapter LAN connections? Can you tell me a scenario that requires all of those ? I did ipconfig /all to get more information. From the listing, I understand that: 16, 15, 14, 12 are Microsoft 6to4 Adapters 13, 6 are isatap Adapters 7 is Teredo Tunneling Pseudo-interface I understand that the above are for automatic tunneling so that the tunnel endpoints are determined automatically by the routing infrastructure. 6to4 is recommended by RFC3056 for automatic tunneling that uses protocol 41 for encapsulation. It is typically used when an end-user wants to connect to the IPv6 Internet using their existing IPv4 connection. Teredo is an automatic tunneling technique that uses UDP encapsulation across multiple NATs. That is, It is to grant IPv6 connectivity to nodes that are located behind IPv6-unaware NAT devices ISATAP treats the IPv4 network as a virtual IPv6 local link, with mappings from each IPv4 address to a link-local IPv6 address. That is to transmit IPv6 packets between dual-stack nodes on top of an IPv4 network. That is, to put in simple words, ISATAP is an intra-site mechanism, while the 6to4 and Teredo are for inter-site tunnelling mechanisms. It seems that Teredo should alone enabled by default in Vista, But my system does not show it to be enabled by default. Interestingly, it shows a 6to4 tunnel adapter (Tunnel adapter LAN connection 16) to be enabled by default? Any specific reasons for it? If i do ipconfig /all, why is only one Teredo present while four 6to4 are present ? I searched the internet for answers to the above queries, but I am unable to find clear answers.

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• Forms authentication failed between web server and sql server

  - by Matt Bear

  I've actually found the solution, but I'm trying to understand why it failed, and why my solution fixed the problem. We have an application that uses forms authentication between a web server and sql server, web server runs server 2008, sql server runs 2008 r2, and sql server 2008. In august the sql server was patched with .net 3.5.1, the web server was untouched, and the forms authentication continued to work. 1 week ago we virtualized the web server onto our vSphere server because of failing hardware. Afterwards the form authentication failed with event code 4005, detail code 50201, The ticket supplied was invalid (on the sql server). In fact the sql server started generating Schannel errors and began blue screening 3-4 times a day. At this point I touched the sql server for the first time(ever), the errors were non specific, any reference to them I could find had to do with either zone alarm(which we don't run), or memory errors. So I applied service pack 1, which stopped the blue screening, but did not fix the forms authentication. At this point we had a work around, so we put it on the back burner while we completed another project, and I was able to get back on it last night. First thing was to adjust some code in the webconfig file on the sql server, nothing, next was regenerate and change out the machine key, still no change. Update the DNS servers, no change. Finally I went through and installed all windows updates, two reboots, (over RDP installed a network card driver which failed, and did not have my server room key, that was fun). After that, forms authentication was working again. And the sql server stopped generating as many errors, I've gotten two schannel errors since then. In short, forms authentication began failing when the web server was cloned onto a virtual machine, which caused the sql server to blue sceen? and forms authentication to fail. And could only be fixed by applying patches to the sql server?(I'm wishing I had patched the servers one at a time so I could know for sure which patch on which server fixed it). My question is why did it fail, and why did patching fix it? I hate fixing something without fully understanding the why and how.

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• Optimal setup for ASUS P6X58D Premium BIOS (no OC)?

  - by rumtscho

  Normally, I'd trust the mainboard manufacturer to choose the best options as defaults. But I had trouble with the board, because even with Quick Boot enabled, it booted twice as slowly as a Pentium 4 Celeron. Then I changed lots of options at once (most of them weren't explained in the manual, just mentioned with a single sentence) and the boot time is only marginally worse than the Pentium 4 (54 sec against 46 sec from button to pw entering screen). Now I don't know if I have turned something off which should have stayed on. I guess I even won't be able to boot from a CD now, because even though it is present in the boot sequence, I took off a timeout I think it needs to check whether there is a disk in the drive. The second reason is that I don't have an internal HDD, only a SSD. I forgot my sources blush but I am under the impression that today's BIOS and OS options are geared toward booting from a HDD, which is often less than optimal when one boots from a SSD, especially when there are functions which cause avoidable writing cycles, as a SSD wears out after too many writing cycles. Most of the things I've read concern the OS, but there are some BIOS-relevant options too. I am especially confused about the disk mode. The board supports AHCI, IDE-simulation and RAID, but of the different articles I've read, there is a proponent for each and no clear arguments for any. So can one tell me which options are important in general and which are important for a SSD-only system? I don't want to overclock the CPU, so you don't have to say anything about this (yes I know the board is meant for OC:)). I am thinking of overclocking the RAM, since they sold me 1600er heatsinked modules which are running at 1066 now, but I'm not sure yet about that. The rest of the system: i7-930, Intel X25-m G2, 6 GB RAM, GTS 250, some no-name Blue-ray ROM. 2 external HDDs over USB 2.0. Lots of other USB-connected hardware (12 devices I think), no SATA 3 drives (will disabling the controller have an impact on performance?), no LAN, only WiFi. Lucid Lynx 64 bit, no dual boot, no virtual installations. The main uses of the system are: managing and playing/showing all the media stored on the external disks, lots of image manipulation, some video editing, a bit of (non-demanding) gaming, rarely development. Lots of Internet surfing too, but this shouldn't have much impact on performance.

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• LVS Configuration issue (Using piranha Tool)

  - by PravinG

  I have configured LVS on cent os using piranha tool .I am using vip of internal n/w as gateway for real server we have two NIC one having exteranl Ip and other for internal n/w which is on 192.168.3.0/24 network. But I am not able to connect from client it shows connection refused error . Please suggest iptables rules for private n public n/w to communicate. May be I am missing this . Iptables rules that we have added are : iptables -t nat -A POSTROUTING -p tcp -s 192.168.3.0/24 --sport 5000 -j MASQUERADE this is my ipconfig: eth0 Link encap:Ethernet HWaddr 00:00:E8:F6:74:DA inet addr:122.166.233.133 Bcast:122.166.233.255 Mask:255.255.255.0 inet6 addr: fe80::200:e8ff:fef6:74da/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:94433 errors:0 dropped:0 overruns:0 frame:0 TX packets:130966 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:9469972 (9.0 MiB) TX bytes:19929308 (19.0 MiB) Interrupt:16 Base address:0x2000 eth0:1 Link encap:Ethernet HWaddr 00:00:E8:F6:74:DA inet addr:122.166.233.136 Bcast:122.166.233.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:16 Base address:0x2000 eth1 Link encap:Ethernet HWaddr 00:E0:20:14:F9:2D inet addr:192.168.3.1 Bcast:192.168.3.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:20ff:fe14:f92d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:123718 errors:0 dropped:0 overruns:0 frame:0 TX packets:148856 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:18738556 (17.8 MiB) TX bytes:11697153 (11.1 MiB) Interrupt:17 Memory:60000400-600004ff eth1:1 Link encap:Ethernet HWaddr 00:E0:20:14:F9:2D inet addr:192.168.3.10 Bcast:192.168.3.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:17 Memory:60000400-600004ff eth2 Link encap:Ethernet HWaddr 00:16:76:6E:D1:D2 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:21 Base address:0xa500 and ipvsadm -ln command [root@abts-kk-static-133 ~]# ipvsadm -ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 122.166.233.136:5000 wlc TCP 122.166.233.136:5004 wlc lvs server routing table Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 122.166.233.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0 169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1004 0 0 eth1 0.0.0.0 122.166.233.1 0.0.0.0 UG 0 0 0 eth0 real 1 real 2 we have configured various ports from 5000:5008 . Do we need to this iptables for all ports? Suggest me how should I solve this issue.

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• What the hell was THAT?!?

  - by Massimo

  My system is Windows XP SP3, updated with the latest patches. The PC is connected to a Cisco 877 ADSL router, which does NAT from the internal network to its single static public IP address. There are no forwarded ports, and the router's management console can only be accessed from the inside. I was doing two things: working on a remote office machine via VPN and browsing some web pages on the Cisco web site. The remote network is absolutely safe (it's a lab network, four virtual servers, no publicly accessible services and no users at all; also, none of what I'm going to describe ever happened there). The Cisco web site... well, I suppose is quite safe, too. Suddenly, something happened. Strange popups appears anywhere; programs claiming they're "antimalware", "antispyware" et so on begins autoinstalling; fake Windows Update and Security Center icons pop up in the system tray. svchost.exe began crashing repeatedly. Then, finally, after some minutes of this... BSOD. And, upon rebooting, BSOD again. Even in safe mode. Ok, that was obviously some virus/trojan/whatever. I had to install a new copy of Windows on another partition to clean things up. I found strange executables, services and DLLs almost anywhere. Amongst the other things, user32.dll and ndis.sys had been replaced. A fake software called "Antimalware Doctor" had been installed. There were services with completely random names or even GUIDs (!), and also ones called "IpSect" and "Darkness". There were executable files without an .exe extension. There were even two boot-class drivers, which I'm quite sure are the ones that finally caused the system to crash. A true massacre. Ok, now the questions: What the hell was that?!? It was something more than a simple virus! How did it manage to attack my computer, as I am behind a firewall and was not doing anything even only potentially harmful on the web at the time?

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• Apache + PHP in paths with accented letters

  - by Álvaro G. Vicario

  I'm not able to run a PHP enabled web site under Apache on Windows XP if the path to DOCUMENT_ROOT contains accented letters. I'm not referring to the script file names themselves but to any folder in the path components. I have this virtual host definition: <VirtualHost *:80> ServerName foo.local DocumentRoot "E:/gonzález/sites/foo" ErrorLog logs/foo.local-error.log CustomLog logs/foo.local-access.log combined <Directory "E:/gonzález/sites/foo"> AllowOverride All Options Indexes FollowSymLinks Order allow,deny Allow from all </Directory> </VirtualHost> If I save the file in ANSI I get a syntax error: DocumentRoot must be a directory If I save the file in Unicode I get another syntax error: Invalid command '\xff\xfe#', perhaps misspelled or defined by a module not included in the server configuration (looks like it's complaining about the BOM) If I save the file in BOM-less UTF-8 Apache works fine and it serves static files with no apparent issue... ... however, PHP complaints when loading any *.php file (even an empty one): Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 Fatal error: Unknown: Failed opening required 'E:/gonzález/sites/foo/vacio.php' (include_path='.;C:\Archivos de programa\PHP\pear') in Unknown on line 0 I decided to try the 8+3 short name of the directory (just a test, I don't want to use such a workaround): <VirtualHost *:80> ServerName foo.local DocumentRoot "E:/GONZLE~1/sites/foo" ErrorLog logs/foo.local-error.log CustomLog logs/foo.local-access.log combined <Directory "E:/GONZLE~1/sites/foo"> AllowOverride All Options Indexes FollowSymLinks Order allow,deny Allow from all </Directory> </VirtualHost> But I get the same behaviour: Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 Fatal error: Unknown: Failed opening required 'E:/gonzález/sites/foo/vacio.php' (include_path='.;C:\Archivos de programa\PHP\pear') in Unknown on line 0 While there're obvious workarounds (use plain ASCII in all directory names or create NTFS junctions to hide actual names) I can't believe that this cannot be done. Do you have more information about the subject? My specs include 32 bit Windows XP Professional SP3, Apache/2.2.13 and PHP/5.2.11 running as Apache module (but I've noticed the same issue in another box with Windows Vista and PHP/5.3.1).

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• DVD Drive Failing on Windows 7

  - by Seth Spearman

  I have x64 Windows 7 running on an ASUS M50VM. The DVD drive works completely unreliably if not at all. But the story is not that simple so bear with me...here are the gory details. When I first got the machine it came with Windows XP and I upgraded it to Windows Vista X64 and the DVD worked fine. When Windows 7 RC2 came out I tried it on a Virtual Machine and I liked it so much that I upgraded the machine to Win7 RC1. The DVD worked fine. Of course, RC1 was going to start spontaneously rebooting, so when Windows 7 was released I DID A CLEAN INSTALL of Windows 7. Just to clarify...by clean install I mean I did a FORMAT of the HARD DRIVE and INSTALLED it from scratch. EVER since then the DVD mostly doesn't work. I can sometime read from disk but that will often hang. (Please see my description below of HANG for details.) CD or DVD writes ALWAYS fail with a HANG (I have done a successful write only one time.) Here is what I mean by HANG... *Explorer Window is unresponsive. *Any software accessing the DVD drive is unresponsive. *The DVD tray will not eject. *Using a paper clip will eject but the disk is usually spinning real hard. *Attempting to shut down windows will fail. I have waited as long as ten minutes but the whole OS seems to hang. I do a hard shutdown. *Sometimes accessing the DVD (when it does not cause a HANG) will still fail and the device will actually seem to disappear from the system until I reboot. A couple of other things. It is NOT a hardware failure. It is the Windows OS. I know this because I swapped out my DVD drive with a friend with the same model...his machine is fine (he is still running Vista X64) and my machine still fails. For what it is worth. I swapped out my primary disk with the INTEL 160GB SSD. EDIT Here is what System Information shows about my DVD drive Drive D: Description CD-ROM Drive Media Loaded No Media Type DVD Writer Name HL-DT-ST DVDRAM GSA-T50N ATA Device Manufacturer (Standard CD-ROM drives) Status OK Transfer Rate -1.00 kbytes/sec SCSI Target ID 0 PNP Device ID IDE\CDROMHL-DT-ST_DVDRAM_GSA-T50N________________RR04____\5&2B5B7F1D&0&1.0.0 Driver c:\windows\system32\drivers\cdrom.sys (6.1.7600.16385, 144.00 KB (147,456 bytes), 7/13/2009 7:19 PM) Any ideas? HELP! Seth B Spearman

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• Add Mirror for volumes other than the last one in Windows 7 (disk "not up-to-date")

  - by rakslice

  I'm using Windows 7 x64 Ultimate. I have an existing 4TB disk with 3 NTFS volumes, a new 3TB blank disk, and I'm trying to mirror the volumes onto the new disk. My Windows install is on an SSD which is Disk 0. The 4TB disk with volumes is Disk 1, and the new blank disk is Disk 2. I can add a mirror successfully for the last volume, but when I try to add a mirror for the first volume I immediately get errors (see below). Is there something I special I need to do to add a mirror for a volume other than the last one? More info: I opened Disk Management, right-clicked on the first volume on the existing disk, went to Add Mirror, and selected the new disk. The first time I did this I was prompted to convert the new disk to a Dynamic Disk, which I approved. Subsequently I got a message: The operation failed to complete because the Disk Management console view is not up-to-date. Refresh the view by using the refresh task. If the problem persists close the Disk Management console, then restart Disk Management or restart the computer. I've refreshed disk management, restarted the computer, and converted the new disk to basic and back to dynamic, but I still get that error message. Looking around for suggestions of a workaround, I saw a suggestion to use the diskpart command line tool. Running diskpart from the Start Menu as Administrator, I did select volume 2 (the first volume I want to mirror) and then add disk 2 (the new disk), and received a somewhat similar error: Virtual Disk Service error: The disk's extent information is corrupted. DiskPart has referenced an object which is not up-to-date. Refresh the object by using the RESCAN command. If the problem persists exit DiskPart, then restart DiskPart or restart the computer. A rescan appears to be successful: DISKPART> select disk 2 Disk 2 is now the selected disk. DISKPART> rescan Please wait while DiskPart scans your configuration... DiskPart has finished scanning your configuration. but attempting to add the mirror again resulted in the same error. The only similar report I found online was this: http://www.sevenforums.com/hardware-devices/335780-unable-mirror-all-but-last-partition-drive.html Based on that I attempted to mirror the last volume on the disk to the new disk using diskpart, and that started successfully -- it is currently resynchronizing. More Background: In the course of dealing with a failing 3TB hard drive, I bought a replacement 4TB drive and installed it, then copied the partitions from the failing drive to it using Minitool Partition Wizard Home, and then removed the failing drive and was up and running again normally. Now I've received a warranty replacement for the failing drive, and installed it, and now I'm attempting to mirror my partitions to it.

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• Hyper-V Machine drifts time all over, even with NTP

  - by MichaelGG

  Resolved The problem was Hyper-V on that machine. I removed Hyper-V, installed VMware Server, ran the same VM. Time sync issues went away (< 100ms difference after a day). My setup is like this: HYV1 - HyperV machine (non domain) - sync irrelevant AD1 - VM AD server on HYV1, sync'd to time.nist.gov. HyperV time sync off. S1 - Physical machine, sync'd to domain. S2 - Physical machine running HyperV, sync'd to domain. V1 - Linux VM machine on S2, sync'd to AD1. No HyperV integration. AD1 and S1 have fine sync -- stripchart shows less than 100ms difference. S2 drifts like crazy. Here's a bit of the stripchart against AD1: 18:33:22 d:+00.0010138s o:+05.4101899s 18:33:24 d:+00.0010138s o:+05.4319765s 18:33:26 d:+00.0000000s o:+05.4788429s 18:33:28 d:+00.0000000s o:+05.6089942s 18:33:30 d:+00.0010138s o:+05.7240269s 18:33:32 d:+00.0000000s o:+06.0421911s 18:33:34 d:+00.0081104s o:+06.5613708s 18:33:37 d:+00.0000000s o:+06.9096594s 18:33:39 d:+00.0000000s o:+06.8867838s 18:33:41 d:+00.0010127s o:+06.8936401s In 20 seconds, it drifted over a second. If I manually reset it to within 1s, within a few minutes it'll be back drifting about 2 seconds. Overnight it went from ~2s to ~5s. The Linux VM inside S2 has perfect sync with AD1. Here's the config: C:\Users\mgg>w32tm /dumpreg /subkey:Parameters Value Name Value Type Value Data ------------------------------------------------------------ ServiceDll REG_EXPAND_SZ %systemroot%\system32\w32time.dll ServiceMain REG_SZ SvchostEntry_W32Time ServiceDllUnloadOnStop REG_DWORD 1 Type REG_SZ NT5DS NtpServer REG_SZ ad01.mydomain ad02.mydomain C:\Users\mgg>w32tm /dumpreg /subkey:Config Value Name Value Type Value Data ----------------------------------------------------------- FrequencyCorrectRate REG_DWORD 4 PollAdjustFactor REG_DWORD 5 LargePhaseOffset REG_DWORD 50000000 SpikeWatchPeriod REG_DWORD 900 LocalClockDispersion REG_DWORD 9 HoldPeriod REG_DWORD 5 PhaseCorrectRate REG_DWORD 1 UpdateInterval REG_DWORD 30000 EventLogFlags REG_DWORD 2 AnnounceFlags REG_DWORD 5 TimeJumpAuditOffset REG_DWORD 28800 MinPollInterval REG_DWORD 2 MaxPollInterval REG_DWORD 8 MaxNegPhaseCorrection REG_DWORD -1 MaxPosPhaseCorrection REG_DWORD -1 MaxAllowedPhaseOffset REG_DWORD 300 I looked at the event log, and apart from warnings about sync (after it gets way out of sync), there's no other warnings. How can I go about troubleshooting this? It's the only machine that is having this problem. All the other machines (physical and virtual) are doing fine. Edit: To clarify: The VM (AD1) has integration turned off and syncs to time.nist.gov. AD1 is fine. It's the physical machine S1 that can't sync to AD1 and drifts all over. All the other physical servers are able to sync to AD1 just fine. Update So, it appears to be an issue of running the VM. The clock slips slowly with the VM off. Turned on, it immediately starts losing seconds. I swt the VM to only use half the resources, and that seems to have slightly mitigated it, for now. Thanks!

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• IIS 401.3 - Unauthorized on only 1 server out of 3 set up for network load balancing

  - by Tony

  Over the weekend our Server Admin set up two virtual Windows 2008 machines with IIS installed and set them up under NLB. I came in and changed the application pool the website was running under to our domain account that has proper access to the database and the file share hosting our .NET web application Sitefinity, and changed it to .NET 4 Integrated. NLB and everything was running fine on both servers. He brought up the third server for our cluster on Tuesday and I performed the same actions.. The only difference was that I was given admin rights for the third server so I could set it up remotely instead of going to his office. He has full control over the share and NTFS perms on \\hostname\Sitefinity and I believe I only had read access. I pointed the web site to the same \\hostname\Sitefinity\sitename share that the others were on and the authentication/authorization test settings passed. I hit the site from http://localhost (like I did successfully from the other two before trying the cluster's IP address) and I received a HTTP Error 401.3 - Unauthorized. I've verified many times that the application pool is running under the same service account. I tried hitting just a simple test.htm.. works fine on both of the first two servers but I get the same 401.3 on the third. I copied my dev project to the local inetpub directory and re-pointed the website and that ran perfectly. I turned on Failed Request Tracing and it acts like it's still running the local IUSR account I guess (instead of my domain account)? Here is an excerpt of the File Cache Access Start and the error from the trace: FileName \\hostname\sitefinity\sitename\test.htm UserName IUSR DomainName NT AUTHORITY ---------- Successful false FileFromCache false FileAddedToCache false FileDirmoned true LastModCheckErrorIgnored true ErrorCode 2147942405 LastModifiedTime ErrorCode Access is denied. (0x80070005) ---------- ModuleName IIS Web Core Notification 2 HttpStatus 401 HttpReason Unauthorized HttpSubStatus 3 ErrorCode 2147942405 ConfigExceptionInfo Notification AUTHENTICATE_REQUEST ErrorCode Access is denied. (0x80070005) ---------- My personal AD account was then granted read/write perms to the share so I created a new application pool and set the site under it in case there was an issue with the application pool but no success. I created another under my own account and it still failed. It just seems like maybe it's not trying to access the files under the account my application pools are running under although that's the only way I've done things before. I set the Physicial Path Credentials in Advanced Settings on the site to the service account and it threw a 500 error of some sort so I assume that's not the answer (and I don't have to do it on the other servers). It's like somehow I'm trying to force impersonation on the IUSR account or something?

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• Areca 1280ml RAID6 volume set failed

  - by Richard

  Today we hit some kind of worst case scenario and are open to any kind of good ideas. Here is our problem: We are using several dedicated storage servers to host our virtual machines. Before I continue, here are the specs: Dedicated Server Machine Areca 1280ml RAID controller, Firmware 1.49 12x Samsung 1TB HDDs We configured one RAID6-set with 10 discs that contains one logical volume. We have two hot spares in the system. Today one HDD failed. This happens from time to time, so we replaced it. Upon rebuilding a second disc failed. Normally this is no fun. We stopped heavy IO-operations to ensure a stable RAID rebuild. Sadly the hot-spare disc failed while rebuilding and the whole thing stopped. Now we have the following situation: The controller says that the raid set is rebuilding The controller says that the volume failed It is a RAID 6 system and two discs failed, so the data has to be intact, but we cannot bring the volume online again to access the data. While searching we found the following leads. I don't know whether they are good or bad: Mirroring all the discs to a second set of drives. So we would have the possibility to try different things without loosing more than we already have. Trying to rebuild the array in R-Studio. But we have no real experience with the software. Pulling all drives, rebooting the system, changing into the areca controller bios, reinserting the HDDs one-by-one. Some people are saying that the brought the system online by this. Some are saying that the effect is zero. Some say, that they blew the whole thing. Using undocumented areca commands like "rescue" or "LeVel2ReScUe". Contacting a computer forensics service. But whoa... primary estimates by phone exceeded 20.000€. That's why we would kindly ask for help. Maybe we are missing the obvious? And yes of course, we have backups. But some systems lost one week of data, thats why we'd like to get the system up and running again. Any help, suggestions and questions are more than welcome.

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• Losing internet connectivity on server after installing LogMeIn Hamachi (with server set as gateway node)

  - by Kim Jong-Un

  Our domain controller (SBS 2003) completely lost internet and network connectivity yesterday after I remotely installed LogMeIn Hamachi on it and set it to be a gateway node- in an attempt to create a VPN link between the server and a remote site. I had to go in to the office to resolve the problem as, unsurprisingly, my own remote access to the server was also lost. I was only able to restore network connectivity by deleting a virtual network adapter Hamachi created when making the server the gateway node (called "Hamachi bridge" I believe), then rebooting the server. This is a repeatable problem. Every time I try to get this to work, it just takes the server offline. Why would this bridge affect regular TCP/IP connectivity on the NIC in this way? I have tried a "hub-and-spoke" configuration between the server and our PC at a remote site (server set as hub, remote site as spoke). This caused no such problems with general internet connectivity, and file transfer worked well between the two computers. However, there was a DNS issue with the VPN between the two sites- resulting in Active Directory not being able to communicate between them (could not log on using domain user accounts at remote site if they were not already cached on that machine). I only tried a "gateway" network as LogMeIn support told me: If you can get the Active Directory to work it would only be through a "Gateway" network type with the server acting as the Gateway Node. You would configure the gateway settings on the server in the Hamachi client on that machine to push whatever IP's/DNS settings you prefer and at that point AD would be able (all things being equal) communicate to the client node when it attaches. We do not have any ActiveDirectory configuration info as that's outside the scope of our support. I hope this helps. It would be fantastic if I could get Active Directory to work over a Hamachi VPN connection, without worrying about the server going offline in this way. Does anyone have any ideas how I should proceed, or any theories as to what is going on when I try to use the "gateway" network type? I want to try to narrow down what is going on here.

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• Further Performance Tuning on Medium SharePoint Farm?

  - by elorg

  I figured I would post this here, since it may be related more to the server configuration than the SharePoint configuration or a combination of both? I'm open for ideas to try, or even feedback on things that maybe have been configured incorrectly as far as performance is concerned. We have a medium MOSS 2007 install prepped and ready for receiving the WSS 2003 data to upgrade. The environment was originally architected by a previous coworker, and I have since added a few configuration modifications to assist with performance before we finally performed the install. When testing the new site collections & SharePoint install (no actual data yet), things seemed a bit slow. I had assumed that it was because I was accessing it remotely. Apparently the client is still experiencing this and it is unacceptably slow. 1 SQL Server running SQL Server 2008 2x SharePoint WFEs - hosting queries (no index) 1x SharePoint Index - hosting index (no queries) MOSS 2007 installed and patched up through December '09 on WFEs & Index All 4 servers are VMs, should have more than sufficient disk space & RAM (don't recall at the moment), and are running Windows Server 2008 - everything is 64-bit. The WFEs have Windows NLB configured, with a DNS name & IP for the NLB cluster. Single NIC on each server (virtual, since VMWare). The Index server is configured as a WFE (outside of the NLB cluster) so that it can index itself and replicate the indexes to the WFEs that will serve the queries. Everything is configured & working properly - it just takes a minute or two to load a page on the local LAN. The client is still using their old portal (we haven't started the migration/upgrade just yet) so there's virtually no data or users. We need to either further tune the configuration, or fix anything that may have been configured incorrectly which is causing this slowness? I've already reviewed & taken into account everything that I could find that was relevant before we even started the install. Does anyone have ideas or pointers? Perhaps there's something that I've missed?

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• My facebook blocking ACL has stopped working

  - by Josh

  This probably very simple. This was setup before I arrived, and has been working to block facebook. I recently eliminated some static port forwarding on this 2691 (as in, I don't think anything else has changed), and now facebook is once again accessible. Why is this list not doing what it seems like it should be doing (and was doing)? Would an extended outbound ACL be more appropriate (I think that would have been my thought if I had been tasked with creating this in the first place)? Something different? I've included below what I believe are the relevant parts of the config. interface FastEthernet0/0 ip address my.pub.ip.add my.ip.add.msk ip access-group 1 in ip nat outside ip virtual-reassembly duplex auto speed auto access-list 1 deny 69.171.224.0 0.0.31.255 access-list 1 deny 74.119.76.0 0.0.3.255 access-list 1 deny 204.15.20.0 0.0.3.255 access-list 1 deny 66.220.144.0 0.0.15.255 access-list 1 deny 69.63.176.0 0.0.15.255 access-list 1 permit any ip nat inside source list 105 interface FastEthernet0/0 overload access-list 105 deny ip 192.168.0.0 0.0.0.255 192.168.8.0 0.0.0.255 access-list 105 permit ip 192.168.0.0 0.0.0.255 any access-list 105 permit ip 192.168.1.0 0.0.0.255 any EDIT ACL is once again blocking Facebook. Here is the new definition for those interested... access-list 1 deny 66.220.144.0 0.0.7.255 access-list 1 deny 66.220.152.0 0.0.7.255 access-list 1 deny 69.63.176.0 0.0.7.255 access-list 1 deny 69.63.176.0 0.0.0.255 access-list 1 deny 69.63.184.0 0.0.7.255 access-list 1 deny 69.171.224.0 0.0.15.255 access-list 1 deny 69.171.239.0 0.0.0.255 access-list 1 deny 69.171.240.0 0.0.15.255 access-list 1 deny 69.171.255.0 0.0.0.255 access-list 1 deny 74.119.76.0 0.0.3.255 access-list 1 deny 173.252.64.0 0.0.31.255 access-list 1 deny 173.252.70.0 0.0.0.255 access-list 1 deny 173.252.96.0 0.0.31.255 access-list 1 deny 204.15.20.0 0.0.3.255 access-list 1 permit any

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• networking tunnel adapter connections?

  - by Karthik Balaguru

  I understand that Tunnel Adapter LAN is for encapsulating IPv6 packets with an IPv4 header so that they can be sent across an IPv4 network. Few queries popped up in my mind based on this :- If i do 'ipconfig', Apart from ethernet adapter LAN details, I get a series of statments as below - Tunnel adapter Local Area Connection* 6 Tunnel adapter Local Area Connection* 7 Tunnel adapter Local Area Connection* 12 Tunnel adapter Local Area Connection* 13 Tunnel adapter Local Area Connection* 14 Tunnel adapter Local Area Connection* 15 Tunnel adapter Local Area Connection* 16 Except for the *16, all the other Tunnel Adapter Local Area Connections show Media Disconnected. Why is the numbering for the Tunnel adapter LAN not sequential? It is like 6, 7, 12, 13, 14, 15, 16. A strange numbering scheme! I tried to figure it out by thinking of some arithmetic series. But, it does not seem to fit in. There is a huge gap between 7 and 12. Any ideas? What is the need for so many Tunnel Adapter LAN connections? Can you tell me a scenario that requires all of those ? I did ipconfig /all to get more information. From the listing, I understand that: 16, 15, 14, 12 are Microsoft 6to4 Adapters 13, 6 are isatap Adapters 7 is Teredo Tunneling Pseudo-interface I understand that the above are for automatic tunneling so that the tunnel endpoints are determined automatically by the routing infrastructure. 6to4 is recommended by RFC3056 for automatic tunneling that uses protocol 41 for encapsulation. It is typically used when an end-user wants to connect to the IPv6 Internet using their existing IPv4 connection. Teredo is an automatic tunneling technique that uses UDP encapsulation across multiple NATs. That is, It is to grant IPv6 connectivity to nodes that are located behind IPv6-unaware NAT devices ISATAP treats the IPv4 network as a virtual IPv6 local link, with mappings from each IPv4 address to a link-local IPv6 address. That is to transmit IPv6 packets between dual-stack nodes on top of an IPv4 network. That is, to put in simple words, ISATAP is an intra-site mechanism, while the 6to4 and Teredo are for inter-site tunnelling mechanisms. It seems that Teredo should alone enabled by default in Vista, But my system does not show it to be enabled by default. Interestingly, it shows a 6to4 tunnel adapter (Tunnel adapter LAN connection 16) to be enabled by default? Any specific reasons for it? If i do ipconfig /all, why is only one Teredo present while four 6to4 are present ? I searched the internet for answers to the above queries, but I am unable to find clear answers.

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• Converting an EC2 AMI to vmdk image

  - by Reed G. Law

  I've come quite close to getting Amazon Linux to boot inside VirtualBox, thanks to this answer and these websites. A quick overview of the steps I've taken: Launch EC2 instance with Amazon Linux 2011.09 64-bit AMI dd the contents of the EBS volume over ssh to a local image file. Mount the image file as a loopback device and then to a local mount point. Create a new empty disk image file, partition with an offset for a bootloader, and create an ext4 filesystem. Mount the new image's partition and copy everything from the EC2 image. Install grub (using Ubuntu's grub-legacy-ec2 package, not grub2). Convert the image file to vmdk using qemu-img. Create a new VirtualBox VM with the vmdk. Now the VM boots, grub loads, and the kernel is found. But it fails when it tries to mount the root device: dracut Warning: No root device "block:/dev/xvda1" found dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. dracut Warning: Signal caught! dracut Warning: Boot has failed. To debug this issue add "rdshell" to the kernel command line. Kernel panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 2.6.35.14-107.1.39.amzn1.x86_64 #1 I have tried changing /boot/grub/menu.lst to find the root device by label and UUID, but nothing works. I'm guessing the xen kernel is not compatible with VirtualBox. The reasoning behind all this effort is to make a Vagrant box that is as close to possible as the production enviroment, so deploys can be tested locally. I know it's cheap to do test runs on EC2, but poor connectivity often ruins the experience. Plus it would be really nice to have a virtual machine with the production environment so that co-workers don't have to install everything under the sun just to get up and running with app development. If I were to try running a different kernel, what kernel could I get to be as close as possible to Amazon Linux 2011.09?

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• How might I stop BACKSCATTER using Qmail?

  - by alecb

  New to ServerFault , please pardon if my details are too much Linux box acting as Virtual Host for domain hosting. Runs CentOs. Runs Parallels Plesk 9.x Regardless of the following, the SPAM keeps flowing in at 1-3 / second. An explanation of the problem... "xinetd service listens for SMTP connections and forwards to qmail-smtpd. The qmail service only process the queue, but does not control messages coming into the queue...that's why stopping it has no effect. If you stop xinetd AND qmail, then kill any open qmail-smtpd processes, all mail flow comes to a stop SOMETIMES Problem is, qmail-smtpd is not smart enough to check for valid mailboxes on the localhost before accepting the mail. So, it accepts bad mail with a forged replyto address which gets processed in the queue by qmail. Qmail cannot deliver locally and bounces to the forged replyto address." We believe the fix is to patch the qmail-smtpd process to give it the intelligence to check for the existence of local mailboxes BEFORE accepting the message. The problem is when we try to compile the chkuser patch we run into failures due to Plesk Control Panel." Is anyone aware of something we could do differently or better?" Other things that have NOT worked thus far: -Turning off any and all mail processes (to check as an indicator that an individual account has been compromised. This has been verified as NOT the case.) -Turning off mail AND http server processes (in the case of a compromised formmail) -Running EXIM in lieu of Qmail( easy/quick install but xinetd forces exim to close and restarts qmail on its own) -Turned on SPF protection via Plesk GUI. Does not help. -Turned on Greylisting via Plesk GUI. Does not help. -Disabled Bounce notifications via command line That which MIGHT work but have complications: -Use POSTFIX instead of QMAIL (No knowledge of POSTIFX and don't want to bother with it unless anyone knows it has potential to handle backscatter WELL before investing time) -As mentioned above, compiling a chkusr patch, we believe will STOP this problem, along with qmail (because of plesk in the mix, the comile fails every time and Parallels Plesk support is unresponsive unless I cough up MONEY) If I don't clear out the SPAM from the outgoing mail queue nightly, then it clogs up with millions of SPAMs and will bring down the OUTGOING email services. Any and all help welcome and appreciated!

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