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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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• recommendations for efficient offsite remote backup solution of vm's

  - by senorsmile

  I am looking for recommendations for backing up my current 6 vm's(and soon to grow to up to 20). Currently I am running a two node proxmox cluster(which is a debian base using kvm for virtualization with a custom web front end to administer). I have two nearly identical boxes with amd phenom II x4's and asus motherboards. Each has 4 500 GB sata2 hdd's, 1 for the os and other data for the proxmox install, and 3 using mdadm+drbd+lvm to share the 1.5 TB's of storage between the two machines. I mount lvm images to kvm for all of the virtual machines. I currently have the ability to do live transfer from one machine to the other, typically within seconds(it takes about 2 minutes on the largest vm running win2008 with m$ sql server). I am using proxmox's built-in vzdump utility to take snapshots of the vm's and store those on an external harddrive on the network. I then have jungledisk service (using rackspace) to sync the vzdump folder for remote offsite backup. This is all fine and dandy, but it's not very scalable. For one, the backups themselves can take up to a few hours every night. With jungledisk's block level incremental transfers, the sync only transfers a small portion of the data offsite, but that still takes at least a half an hour. The much better solution would of course be something that allows me to instantly take the difference of two time points (say what was written from 6am to 7am), zip it, then send that difference file to the backup server which would instantly transfer to the remote storage on rackspace. I have looked a little into zfs and it's ability to do send/receive. That coupled with a pipe of the data in bzip or something would seem perfect. However, it seems that implementing a nexenta server with zfs would essentially require at least one or two more dedicated storage servers to serve iSCSI block volumes (via zvol's???) to the proxmox servers. I would prefer to keep the setup as minimal as possible (i.e. NOT having separate storage servers) if at all possible. I have also briefly read about zumastor. It looks like it could also do what I want, but it appears to have halted development in 2008. So, zfs, zumastor or other?

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• Centos 5.5 [Read-only file system] issue after rebooting

  - by canu johann

  I have a virtual server under centos 5.5 (hosted by a japanese company called sakura ) Since yesterday, connection through ssh couldn't be established. I've contacted support center who told me to restart VS from the control panel. After restarting, I got the message below Connected to domain wwwxxxxxx.sakura.ne.jp Escape character is ^] [ OK ] Setting hostname localhost.localdomain: [ OK ] Setting up Logical Volume Management: No volume groups found [ OK ] Checking filesystems Checking all file systems. [/sbin/fsck.ext4 (1) -- /] fsck.ext4 -a /dev/vda3 / contains a file system with errors, check forced. /: Inodes that were part of a corrupted orphan linked list found. /: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY. (i.e., without -a or -p options) @@cat: /proc/self/attr/current: Invalid argument Welcome to CentOS Starting udev: @[ OK ] Setting hostname localhost.localdomain: [ OK ] Setting up Logical Volume Management: No volume groups found [ OK ] Checking filesystems Checking all file systems. [/sbin/fsck.ext4 (1) -- /] fsck.ext4 -a /dev/vda3 / contains a file system with errors, check forced. /: Inodes that were part of a corrupted orphan linked list found. /: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY. (i.e., without -a or -p options) [FAILED] *** An error occurred during the file system check. *** Dropping you to a shell; the system will reboot *** when you leave the shell. *** Warning -- SELinux is active *** Disabling security enforcement for system recovery. *** Run 'setenforce 1' to reenable. /etc/rc.d/rc.sysinit: line 53: /selinux/enforce: Read-only file system Give root password for maintenance (or type Control-D to continue): bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system bash: cannot create temp file for here-document: Read-only file system (Repair filesystem) 1 # setenforce 1 setenforce: SELinux is disabled (Repair filesystem) 2 # echo 1 (Repair filesystem) 4 # /etc/init.d/sshd status openssh-daemon is stopped (Repair filesystem) 5 # /etc/init.d/sshd start Starting sshd: NET: Registered protocol family 10 lo: Disabled Privacy Extensions touch: cannot touch `/var/lock/subsys/sshd': Read-only file system (Repair filesystem) 6 # sudo /etc/init.d/sshd start sudo: sorry, you must have a tty to run sudo (Repair filesystem) 7 # I have 4 site in production and I need to restart the server quickly (SSH + HTTPD ,...). Thank you for your time.

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• Varnish, hide port number

  - by George Reith

  My set up is as follows: OS: CentOS 6.2 running on an OpenVZ virtual machine. Web server: Nginx listening on port 8080 Reverse proxy: Varnish listening on port 80 The problem is that Varnish redirects my requests to port 8080 and this appears in the address bar like so http://mysite.com:8080/directory/, causing relative links on the site to include the port number (8080) in the request and thus bypassing Varnish. The site is powered by WordPress. How do I allow Varnish to use Nginx as the backend on port 8080 without appending the port number to the address? Edit: Varnish is set up like so: I have told the Varnish daemon to listen to port 80 by default. VARNISH_VCL_CONF=/etc/varnish/default.vcl # # # Default address and port to bind to # # Blank address means all IPv4 and IPv6 interfaces, otherwise specify # # a host name, an IPv4 dotted quad, or an IPv6 address in brackets. # VARNISH_LISTEN_ADDRESS= VARNISH_LISTEN_PORT=80 # # # Telnet admin interface listen address and port VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1 VARNISH_ADMIN_LISTEN_PORT=6082 # # # Shared secret file for admin interface VARNISH_SECRET_FILE=/etc/varnish/secret # # # The minimum number of worker threads to start VARNISH_MIN_THREADS=1 # # # The Maximum number of worker threads to start VARNISH_MAX_THREADS=1000 # # # Idle timeout for worker threads VARNISH_THREAD_TIMEOUT=120 # # # Cache file location VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin # # # Cache file size: in bytes, optionally using k / M / G / T suffix, # # or in percentage of available disk space using the % suffix. VARNISH_STORAGE_SIZE=1G # # # Backend storage specification VARNISH_STORAGE="file,${VARNISH_STORAGE_FILE},${VARNISH_STORAGE_SIZE}" # # # Default TTL used when the backend does not specify one VARNISH_TTL=120 The VCL file that Varnish calls (through an include in default.vcl) consists of: backend playwithbits { .host = "127.0.0.1"; .port = "8080"; } acl purge { "127.0.0.1"; } sub vcl_recv { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { set req.backend = playwithbits; set req.http.Host = regsub(req.http.Host, ":[0-9]+", ""); if (req.request == "PURGE") { if (!client.ip ~ purge) { error 405 "Not allowed."; } return(lookup); } if (req.url ~ "^/$") { unset req.http.cookie; } } } sub vcl_hit { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { if (req.request == "PURGE") { set obj.ttl = 0s; error 200 "Purged."; } } } sub vcl_miss { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { if (req.request == "PURGE") { error 404 "Not in cache."; } if (!(req.url ~ "wp-(login|admin)")) { unset req.http.cookie; } if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") { unset req.http.cookie; set req.url = regsub(req.url, "\?.$", ""); } if (req.url ~ "^/$") { unset req.http.cookie; } } } sub vcl_fetch { if (req.http.Host ~ "^(.*\.)?playwithbits\.com$") { if (req.url ~ "^/$") { unset beresp.http.set-cookie; } if (!(req.url ~ "wp-(login|admin)")) { unset beresp.http.set-cookie; } } }

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• Windows cannot find the host name "download.microsoft.com" using DNS

  - by joedotnot

  When trying to download a file found on the Microsoft downloads center that starts with, for example, http://download.microsoft.com/download/6/8/7/(some_GUID)/(some_file_name.ext) i get a timeout with "Internet Explorer cannot display the webpage". More information says: Internet connectivity has been lost. The website is temporarily unavailable. The Domain Name Server (DNS) is not reachable. The Domain Name Server (DNS) does not have a listing for the website's domain. If this is an HTTPS (secure) address, click Tools, click Internet Options, click Advanced, and check to be sure the SSL and TLS protocols are enabled under the security section. Diagnose Connection problems says: Windows cannot find the host name "download.microsoft.com" using DNS Bear with me while i expand on the problem: It all started when i tried to download Windows XP mode for my Windows 7 machine. I went to the virtual PC site, then thru the motions of Windows Genuine Advantage which validated ok, but when it redirects to grab the file just times out with above error. (NB: i also tried with the latest Chrome and Firefox but no use due to the Genuine Advantage stuff, so i decided to stick with IE). I am behind an ADSL2+ modem router connecting via wireless (Win 7 Pro laptop); so i hop over to the desktop connected via ethernet (Vista Business), and same result; begin to think site download.microsoft.com site is down. So i give it a break an read up on EDNS, flushing the cache, hosts file, etc... Try again an hour later on the Win 7 machine, still no go; so i turn off the Win 7 (software) firewall, and lo and behold, i can connect and grab any files from download.microsoft.com; (...nice, so we have a Micro$0ft firewall preventing access to a Micro$0ft website, no wonder my auto-updates kept failing but that's another story). But i still am not happy that the desktop connected via ethernet still cannot get to download.microsoft.com, even though i turned off all firewalls, defenders, anti-virus, etc. What is so special / specific about the url download.microsoft.com, any other site is ok, including www.microsoft.com. Any networking guru know what's REALLY going on, and how can i get the desktop to connect? Ping download.microsoft.com - Ping request could not find host download.microsoft.com. Please check the name and try again. Ping google.com or even www.microsoft.com works gives me an IP address. NB: On the wireless laptop ping download.microsoft.com works, i get xxxx.ms.akamai.net [202.7.177.33].

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• Adobe Reader not loading form content

  - by wullxz

  We have an FDL file which is used to offer an online application possibility. The FDL is filled out and sent to a mailbox. When I open the received file, Adobe Reader starts, loads the document in Internet Explorer (had to change my default browser because it doesn't work in chrome - the customer uses IE as default) and displays a warning that Adobe Reader has blocked the connection to the server where the initial document is saved: I can then click on "Trust this document once" (translated by me!) or "Add this host to trusted hosts" (also translated by me!). The second option doesn't work at all. The first option works but is a little bit annoying. I looked into Adobe Readers options (Edit - "Voreinstellungen" in german / the last option - Security (advanced)) and found the possibility to add hosts, files and directories or allow Adobe Reader to use the "Trusted Websites" list from Internetoptions. When I add the website either to Trusted Websites or the trusted list in Adobe Readers options, the warning doesn't pop up but the content in the prefilled (by the applicant) input boxes of the document doesn't show up on Windows 7 but it does show up on Windows XP. This Screenshot shows the settings window described in the last paragraph. The big input box at the bottom normally holds the trusted files/directories/hosts list. System Information: Windows 7 Enterprise x64 Adobe Reader X multiple IE versions (mine is latest but there's also IE 7 or 8) How do I get Adobe Reader to load the content of the form? This behaviour can be reproduced on a PC. When opening an fdf from a command line the form fields are blank even though there is data in the fdf and the pdf is located in a mnaully entered trsuted folder. Steps to reproduce: Clean install a Windows 7 PC (or use a virtual box) Map a network drive to a shared folder with a subfolder e.g. c:\test\docs becomes m:\docs Set security permissions to allow full control to everyone Add an fdf and a matching pdf file in the subfolder Manually add m:\docs to each of the trusted folders in the trust manager registry settings Ensure that Enhanced Security is on Run a command line to open the fdf file Expected result: pdf is opened in Adobe Reader with form fields filled out with data Actual results: pdf is opened with blank fields 'Yellow bar' appears asking to add document to trusted locations It appears that Adobe Reader XI is ignoring the privileged locations entries in the registry. Adding the document via the 'yellow bar' adds the individual document, with the same folder, to the privileged locations but means that the process has to be repeated for every document that needs to be opened from the folder.

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• Strange permission errors with Windows Server 2008

  - by Spirit

  I just don't know a better way to describe my issue that is driving me nuts. I am trying to establish a test domain with virtual machines on a box that has Win7 with VMwware workstation installed. The purpouse with this domain will be so that we can try and test different situations before they go into the production network. I build a VM with WinSrv2008R2 and I am using that VM as a template to make other servers for the domain by making clones of it. Now I raise a DC with one clone and a member server with another clone - I add the server to the domain. I am following a standard procedure as always (it is not my first domain). Then I make an admin account and I am adding the admin to be a member of the Domain and Enterprise Admins group. That admin is admin with full priviledges on the DC.. no problem there. But on the other server has ... somewhat half the privileges and I cant log in via RDP. I tryed with another account. Same issues. For example (with half the privileges): I can't open the Even Viewer if I go via Start - Administrative Tools - Event Viewer. But I can open the Even Viewer via the server manager. You can notice this on the image below. I mean WTF??? I am going crazy, I haven't experienced anything similar in my three years of expertise. I already lost 3 days troubleshooting this. Could this be related with the cloning? Perhaps if I make fresh installs of WinSrv2008 there won't be any problems? I've had raised test domains as VMs on other occasions before, and there weren't any problems then. This is VMware Workstation 8. I've made clones before, on Workstation 7 it didn't had any problems. Anyone has any ideas? UPDATE: This is the info from the event log when I try to access via RDP: An account failed to log on. Subject: Security ID: NULL SID Account Name: - Account Domain: - Logon ID: 0x0 Logon Type: 3 Account For Which Logon Failed: Security ID: NULL SID Account Name: pat.coleman Account Domain: lab Failure Information: Failure Reason: Domain sid inconsistent. Status: 0xc000006d Sub Status: 0xc000019b

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• How should I set up my Hyper-V server and network topology?

  - by Daniel Waechter

  This is my first time setting up either Hyper-V or Windows 2008, so please bear with me. I am setting up a pretty decent server running Windows Server 2008 R2 to be a remote (colocated) Hyper-V host. It will be hosting Linux and Windows VMs, initially for developers to use but eventually also to do some web hosting and other tasks. Currently I have two VMs, one Windows and one Ubuntu Linux, running pretty well, and I plan to clone them for future use. Right now I'm considering the best ways to configure developer and administrator access to the server once it is moved into the colocation facility, and I'm seeking advice on that. My thought is to set up a VPN for access to certain features of the VMs on the server, but I have a few different options for going about this: Connect the server to an existing hardware firewall (an old-ish Netscreen 5-GT) that can create a VPN and map external IPs to the VMs, which will have their own IPs exposed through the virtual interface. One problem with this choice is that I'm the only one trained on the Netscreen, and its interface is a bit baroque, so others may have difficulty maintaining it. Advantage is that I already know how to do it, and I know it will do what I need. Connect the server directly to the network and configure the Windows 2008 firewall to restrict access to the VMs and set up a VPN. I haven't done this before, so it will have a learning curve, but I'm willing to learn if this option is better long-term than the Netscreen. Another advantage is that I won't have to train anyone on the Netscreen interface. Still, I'm not certain if the capabilities of the Windows software firewall as far as creating VPNs, setting up rules for external access to certain ports on the IPs of Hyper-V servers, etc. Will it be sufficient for my needs and easy enough to set up / maintain? Anything else? What are the limitations of my approaches? What are the best practices / what has worked well for you? Remember that I need to set up developer access as well as consumer access to some services. Is a VPN even the right choice?

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• Wake On Lan only works on first boot, not sequent ones

  - by sp3ctum

  I have converted my old Dell Latitude D410 laptop to a server for tinkering. It is running an updated Debian Squeeze (6) with a Xen enabled kernel (I want to toy with virtual machines later on). I am running it 'headless' via an ethernet connection. I am struggling to enable Wake On Lan for the box. I have enabled the setting in the BIOS, and it works nicely, but only for the first time after the power cord is plugged in. Here is my test: Plug in power cord, don't boot yet Send magic Wake On Lan packet from test machine (Ubuntu) using the wakeonlan program Server expected to start (does every time) Once server has booted, log in via ssh and shut it down via the operating system After shutdown, wake server up via WOL again (fails every time) Some observations: Right after step 1 I can see the integrated NIC has a light on. I deduce this means the NIC gets adequate power and that the ethernet cable is connected to my switch. This light is not on after step 4 (the shutdown stage). The light becomes back on after I disconnect and reconnect the power cord, after which WOL works as well. After step 4 I can verify that wake on lan is enabled via the ethtool program (repeatable each time) This blog post suggested the problem may lay in the fact the motherboard might not be giving adequate power to the NIC after shutdown, so I copied an acpitool script that supposedly should signal the system to give the needed power to the card when shut down. Obviously it did not fix my issue. I have included the relevant power settings in the paste below. I have tried different combinations of parameters of shutdown (the program) options, as well as the poweroff program. I even tried "telinit 0", which I figured would do the most direct boot via software. If I keep the laptop's power button pressed down and do a hard boot this way, the light on the ethernet port stays lit and a WOL is possible. I copied a bunch of hopefully useful information in this paste I have tried this with the laptop battery connected and without it. I get the same result. Promptly pressing the power button causes the system to shut down with the message "The system is going down for system halt NOW!", and WOL is still unsuccessful.

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• can't use periods in ServerName [Lion Apache installation]

  - by punchfacechamp

  I can access my host like this… http://keggyshop but can't use periods… http://keggyshop.dev here's my virtual host directive… <VirtualHost *:80> ServerName keggyshop ServerAlias keggyshop.dev DocumentRoot "~/sites/2012/keggy/web/pages/keggy/120528/sandbox/public" <Directory "~/sites/2012/keggy/web/pages/keggy/120528/sandbox/public"> Options Includes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> host file 127.0.0.1 keggyshop 127.0.0.1 keggyshop.dev traceroute for keggyshop… user$ traceroute keggyshop traceroute to keggyshop (192.168.1.184), 64 hops max, 52 byte packets 1 keggyshop (192.168.1.184) 1.188 ms 0.683 ms 0.747 ms traceroute for keggyshop.dev… user$ traceroute keggyshop.dev traceroute: Warning: keggyshop.dev has multiple addresses; using 184.106.15.239 traceroute to keggyshop.dev (184.106.15.239), 64 hops max, 52 byte packets 1 * 192.168.1.1 (192.168.1.1) 0.856 ms 0.568 ms 2 10.81.192.1 (10.81.192.1) 15.232 ms 7.002 ms 7.936 ms 3 gig-0-3-0-6-nycmnya-rtr2.nyc.rr.com (24.29.97.122) 7.962 ms 7.813 ms 7.712 ms 4 bun101.nycmnytg-rtr001.nyc.rr.com (184.152.112.107) 10.999 ms 14.001 ms 15.466 ms 5 bun6-nycmnytg-rtr002.nyc.rr.com (24.29.148.250) 11.231 ms 17.321 ms 12.745 ms 6 107.14.19.24 (107.14.19.24) 13.972 ms 11.704 ms 16.477 ms 7 ae-1-0.pr0.nyc30.tbone.rr.com (66.109.6.161) 9.237 ms 11.896 ms 107.14.19.153 (107.14.19.153) 7.481 ms 8 xe-5-0-6.ar2.ewr1.us.nlayer.net (69.31.94.57) 16.682 ms 11.791 ms 11.981 ms 9 ae3-90g.cr1.ewr1.us.nlayer.net (69.31.94.117) 12.977 ms 15.706 ms 9.709 ms 10 xe-5-0-0.cr1.ord1.us.nlayer.net (69.22.142.74) 30.473 ms 30.497 ms 31.750 ms 11 ae1-20g.ar1.ord6.us.nlayer.net (69.31.110.250) 36.699 ms 50.785 ms 35.957 ms 12 as19994.xe-1-0-7.ar1.ord6.us.nlayer.net (69.31.110.242) 34.723 ms 31.118 ms 29.967 ms 13 coreb.ord1.rackspace.net (184.106.126.138) 30.471 ms corea.ord1.rackspace.net (184.106.126.136) 33.392 ms 35.210 ms 14 core1-coreb.ord1.rackspace.net (184.106.126.129) 32.453 ms core1-corea.ord1.rackspace.net (184.106.126.125) 32.020 ms core1-coreb.ord1.rackspace.net (184.106.126.129) 32.417 ms 15 core1-aggr401a-3.ord1.rackspace.net (173.203.0.157) 31.274 ms 34.854 ms 30.194 ms

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• Apache ProxyPass Missing Images

  - by EpicOfChaos

  I have a apache server that sits in front of my glassfish server. mydomain.com goes directly to my static files on apache, than if you hit the subdomain forum.mydomain.com it goes to the glassfish webapp forum/ at 127.0.0.1:8080/forum/. This proxy seems to work it takes me to the web app but all of the images are missing! Here is how I go my virtual host setup. NameVirtualHost *:80 <VirtualHost *:80> ServerName www.mydomain.com ServerAlias subdomain.mydomain.com mydomain.com DocumentRoot "/usr/local/apache/htdocs" </VirtualHost> <VirtualHost *:80> ServerName forum.mydomain.com # any logging config, etc, that you need ProxyPass / http://127.0.0.1:8080/forum/ ProxyPassReverse / http://127.0.0.1:8080/forum/ </VirtualHost> And in the access log this is what I am seeing. [15/Jan/2012:03:28:02 +0000] "GET /forums/list.page HTTP/1.1" 200 12861 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/logo.jpg HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/styles/style.css?1326582403934 HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/icon_mini_recentTopics.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/icon_mini_search.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/icon_mini_members.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/styles/en_US.css?1326582403934 HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/icon_mini_groups.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/folder_big.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/icon_mini_login.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/whosonline.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/icon_mini_register.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/ping_session.jsp HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/folder_lock.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/folder.gif HTTP/1.1" 404 1075 [15/Jan/2012:03:28:02 +0000] "GET /forum/templates/default/images/folder_new.gif HTTP/1.1" 404 1075 Any Ideas why the images are not working?

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• How to force Debian to boot new Kernel?

  - by ThE_-_BliZZarD

  I'm running Debian 6, Debian GNU/Linux, with Linux 2.6.32-5-amd64 under Grub2 ( 1.98+20100804-14+squeeze1) on a remote system (no possibility to view the pre-boot messages). I compiled and installed a new kernel, but I can not get it to boot. What I have done: Installed the packages via: dpkg -i linux-headers-3.5.3.20120914-amd64_3.5.3.20120914-amd64-10.00.Custom_amd64.deb linux-image-3.5.3.20120914-amd64_3.5.3.20120914-amd64-10.00.Custom_amd64.deb This updated the Grub configuration. My /boot/grub/grub.cfg now contains: menuentry 'Debian GNU/Linux, with Linux 3.5.3.20120914-amd64' --class debian --class gnu-linux --class gnu --class os { insmod raid insmod mdraid insmod part_msdos insmod part_msdos insmod ext2 set root='(md0)' search --no-floppy --fs-uuid --set 5a3882a9-c7df-4f6a-9feb-f03e3e37be01 echo 'Loading Linux 3.5.3.20120914-amd64 ...' linux /vmlinuz-3.5.3.20120914-amd64 root=UUID=003242b5-121b-49f3-b32f-1b40aea56eed ro acpi=ht quiet panic=10 echo 'Loading initial ramdisk ...' initrd /initrd.img-3.5.3.20120914-amd64 } menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-amd64' --class debian --class gnu-linux --class gnu --class os { insmod raid insmod mdraid insmod part_msdos insmod part_msdos insmod ext2 set root='(md0)' search --no-floppy --fs-uuid --set 5a3882a9-c7df-4f6a-9feb-f03e3e37be01 echo 'Loading Linux 2.6.32-5-amd64 ...' linux /vmlinuz-2.6.32-5-amd64 root=UUID=003242b5-121b-49f3-b32f-1b40aea56eed ro acpi=ht quiet panic=10 echo 'Loading initial ramdisk ...' initrd /initrd.img-2.6.32-5-amd64 } I used grub-set-default "Debian GNU/Linux, with Linux 2.6.32-5-amd64" to set the old kernel as default and then grub-reboot "Debian GNU/Linux, with Linux 3.5.3.20120914-amd64" to boot into the new kernel once. After update-grub I rebooted the system, but everytime it comes back up with the old kernel (2.6). I tried setting the new one as default (grub-set-default 0, update-grub, reboot) but, still the old one. The Syslogs contain NO hint whatsoever about trying to boot the new kernel - only the old one. Would there be any hints regarding problems with a kernel? Is there a way to enable debug-logging in grub? What am I doing wrong? How can I force the system to boot the new kernel? Edit: Hardware of remote machine. CPU cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 5 model name : AMD Athlon(tm) II X4 605e Processor stepping : 3 cpu MHz : 2294.898 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt bogomips : 4589.77 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate (copied only the first, 3 more follow) The server is a Fujitsu PRIMERGY MX130 S1.

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• Mercurial browser on Windows 2003 takes several refreshes before displaying repositories

  - by Tim Murphy

  When attempt to browse my Mercurial repositories it usually takes several refreshes before the repository list is displayed. The configuration is as follows: Windows Server 2003 (Dedicated machine hosted by http://www.server4you.com/. Site has anonymous password protection with self-signed SSL. Mercurial 1.5.3 Python 2.6.5 Python for Windows 32 extensions 214 py2.6 isapi-wsgi 0.4.2 The repositories are being served via ISAPI using the standard hgwebdir_wspi.py file (copy to follow). Other problems with the repository server: Before doing a clone/push/etc I have to browse the repositories first otherwise hg on my local machine can not locate the site. I have one a repository with a large changeset that after a minute or so throw error "abort: error: An existing connection was forcibly closed by the remote host". Will be asking another question for this problem. What can I do to start tracking down this problem? hgwebdir_wsgi.py # Configuration file location hgweb_config = r'C:\Public\Mercurial\WebSite\hgweb.config' # Global settings for IIS path translation path_strip = 0 # Strip this many path elements off (when using url rewrite) path_prefix = 0 # This many path elements are prefixes (depends on the # virtual path of the IIS application). import sys # Adjust python path if this is not a system-wide install #sys.path.insert(0, r'c:\path\to\python\lib') # Enable tracing. Run 'python -m win32traceutil' to debug if hasattr(sys, 'isapidllhandle'): import win32traceutil # To serve pages in local charset instead of UTF-8, remove the two lines below import os os.environ['HGENCODING'] = 'UTF-8' import isapi_wsgi from mercurial import demandimport; demandimport.enable() from mercurial.hgweb.hgwebdir_mod import hgwebdir # Example tweak: Replace isapi_wsgi's handler to provide better error message # Other stuff could also be done here, like logging errors etc. class WsgiHandler(isapi_wsgi.IsapiWsgiHandler): error_status = '500 Internal Server Error' # less silly error message isapi_wsgi.IsapiWsgiHandler = WsgiHandler # Only create the hgwebdir instance once application = hgwebdir(hgweb_config) def handler(environ, start_response): # Translate IIS's weird URLs url = environ['SCRIPT_NAME'] + environ['PATH_INFO'] paths = url[1:].split('/')[path_strip:] script_name = '/' + '/'.join(paths[:path_prefix]) path_info = '/'.join(paths[path_prefix:]) if path_info: path_info = '/' + path_info environ['SCRIPT_NAME'] = script_name environ['PATH_INFO'] = path_info return application(environ, start_response) def __ExtensionFactory__(): return isapi_wsgi.ISAPISimpleHandler(handler) if __name__=='__main__': from isapi.install import * params = ISAPIParameters() HandleCommandLine(params) hgweb.config [paths] / = C:\Public\Mercurial\Repositories\* [web] allow_archive = bz2 gz zip ; Allows archive downloads. allow_push = ######## ; Users that are allowed to push.

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• Windows 8 ignores more specific route

  - by Lander

  OS: Windows 8 I have a cabled NIC (connected to router with ip 192.168.1.0) and a WIFI NIC (connected to a router with ip 192.168.1.1) . I want all traffic to go through the cabled NIC, except the 192.168.1.0/8 range should use the wifi-nic. This was working fine in Windows 7, without any manual configuration. In Windows 8 however, it's not. My routing table: =========================================================================== Interface List 14...f2 7b cb 13 e7 f0 ......Microsoft Wi-Fi Direct Virtual Adapter 13...b8 ac 6f 54 d2 5c ......Realtek PCIe FE Family Controller 12...f0 7b cb 13 e7 f0 ......Dell Wireless 1397 WLAN Mini-Card 1...........................Software Loopback Interface 1 15...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.198 30 0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.233 20 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.0.0 255.255.255.0 On-link 192.168.0.233 276 192.168.0.233 255.255.255.255 On-link 192.168.0.233 276 192.168.0.255 255.255.255.255 On-link 192.168.0.233 276 192.168.1.0 255.255.255.0 192.168.1.1 192.168.1.198 31 192.168.1.198 255.255.255.255 On-link 192.168.1.198 286 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.0.233 276 224.0.0.0 240.0.0.0 On-link 192.168.1.198 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.0.233 276 255.255.255.255 255.255.255.255 On-link 192.168.1.198 286 =========================================================================== Persistent Routes: None I added the rule for 192.168.1.0. I would think Windows should use this rule for the IP 192.168.1.1 because it's more specific than the default-route. However it's not: C:\Windows\system32>tracert 192.168.1.1 Tracing route to 192.168.1.1 over a maximum of 30 hops 1 58 ms 4 ms 4 ms 192.168.0.1 2 68 ms 12 ms 11 ms ^C So... What do I do wrong? And how can I make Windows use the wireless NIC for 192.168.1.0/8

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• unable to join domain using virtualbox

  - by FreshPrinceOfSO

  I'm in the process of setting up a VM environment for a MS certification exam (70-462). Following the training kit's instructions, I've set up a domain controller (DC) and two members (SQL-A, SQL-B) thus far. I can't figure out why I can't join the domain. DC IPv4 Address . . . : 10.10.10.10(Preferred) Subnet Mask. . . . : 255.0.0.0 DNS Servers. . . . : ::1 127.0.0.1 SQL-A IPv4 Address . . . : 10.10.10.20(Preferred) Subnet Mask. . . . : 255.0.0.0 DNS Servers. . . . : 10.10.10.10 SQL-B IPv4 Address . . . : 10.10.10.30(Preferred) Subnet Mask. . . . : 255.0.0.0 DNS Servers. . . . : 10.10.10.10 I've read how to do networking between virtual machines in virtualbox and the documentation. After trying various network adapter configurations, I can't get them to communicate in order to have the two members join the domain. When I ping from .30 to .10, I get: ping 10.10.10.10 Pinging 10.10.10.10 with 32 bytes of data: Reply from 10.10.10.20: Destination host unreachable. Reply from 10.10.10.20: Destination host unreachable. Reply from 10.10.10.20: Destination host unreachable. Reply from 10.10.10.20: Destination host unreachable. Trying to join the domain: netdom join SQL-A /domain:contso.com The specified domain either does not exist or could not be contacted. The command failed to complete successfully. Within VirtualBox, I've tried the following combinations for network adapter: Attached to - Promiscuous Mode ------------------------------- NAT Bridged Adapter - Deny Bridged Adapter - Allow VMs Bridged Adapter - Allow All Internal Network - Deny Internal Network - Allow VMs Internal Network - Allow All Host-only Adapter - Deny Host-only Adapter - Allow VMs Host-only Adapter - Allow All Edit ipconfig /all of DC ipconfig /all of SQL-A

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• Why do my Application Compatibility Toolkit Data Collectors fail to write to my ACT Log Share?

  - by Jay Michaud

  I am trying to get the Microsoft Application Compatibility Toolkit 5.6 (version 5.6.7320.0) to work, but I cannot get the Data Collectors to write to the ACT Log Share. The configuration is as follows. Machine: ACT-Server Domain: mydomain.example.com OS: Windows 7 Enterprise 64-bit Edition Windows Firewall configuration: File and Printer Sharing (SMB-In) is enabled for Public, Domain, and Private networks ACT Log Share: ACT Share permissions*: Group/user names Allow permissions --------------------------------------- Everyone Full Control Administrator Full Control Domain Admins Full Control Administrators Full Control ANONYMOUS LOGON Full Control Folder permissions*: Group/user name Allow permissions Apply to ------------------------------------------------- ANONYMOUS LOGON Read, write & execute This folder, subfolders, and files Domain Admins Full control This folder, subfolders, and files Everyone Read, write & execute This folder, subfolders, and files Administrators Full control This folder, subfolders, and files CREATOR OWNER Full control Subfolders and files SYSTEM Full control This folder, subfolders, and files INTERACTIVE Traverse folder / This folder, subfolders, and files execute file, List folder / read data, Read attributes, Read extended attributes, Create files / write data, Create folders / append data, Write attributes, Write extended attributes, Delete subfolders and files, Delete, Read permissions SERVICE (same as INTERACTIVE) BATCH (same as INTERACTIVE) *I am fully aware that these permissions are excessive, but that is beside the point of this question. Some of the clients running the Data Collector are domain members, but some are not. I am working under the assumption that this is a Windows file sharing permission issue or a network access policy issue, but of course, I could be wrong. It is my understanding that the Data Collector runs in the security context of the SYSTEM account, which for domain members appears on the network as MYDOMAIN\machineaccount. It is also my understanding from reading numerous pieces of documentation that setting the ANONYMOUS LOGON permissions as I have above should allow these computer accounts and non-domain-joined computers to access the share. To test connectivity, I set up the Windows XP Mode virtual machine (VM) on ACT-Server. In the VM, I opened a command prompt running as SYSTEM (using the old "at" command trick). I used this command prompt to run explorer.exe. In this Windows Explorer instance, I typed \ACT-Server\ACT into the address bar, and then I was prompted for logon credentials. The goal, though, was not to be prompted. I also used the "net use /delete" command in the command prompt window to delete connections to the ACT-Server\IPC$ share each time my connection attempt failed. I have made sure that the appropriate exceptions are Since ACT-Server is a domain member, the "Network access: Sharing and security model for local accounts" security policy is set to "Classic - local users authenticate as themselves". In spite of this, I still tried enabling the Guest account and adding permissions for it on the share to no effect. What am I missing here? How do I allow anonymous logons to a shared folder as a step toward getting my ACT Data Collectors to deposit their data correctly? Am I even on the right track, or is the issue elsewhere?

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• Postfix flow/hook reference, or high-level overview?

  - by threecheeseopera

  The Postfix MTA consists of several components/services that work together to perform the different stages of delivery and receipt of mail; these include the smtp daemon, the pickup and cleanup processes, the queue manager, the smtp service, pipe/spawn/virtual/rewrite ... and others (including the possibility of custom components). Postfix also provides several types of hooks that allow it to integrate with external software, such as policy servers, filters, bounce handlers, loggers, and authentication mechanisms; these hooks can be connected to different components/stages of the delivery process, and can communicate via (at least) IPC, network, database, several types of flat files, or a predefined protocol (e.g. milter). An old and very limited example of this is shown at this page. My question: Does anyone have access to a resource that describes these hooks, the components/delivery stages that the hook can interact with, and the supported communication methods? Or, more likely, documentation of the various Postfix components and the hooks/methods that they support? For example: Given the requirement "if the recipient primary MX server matches 'shadysmtpd', check the recipient address against a list; if there is a match, terminate the SMTP connection without notice". My software would need to 1) integrate into the proper part of the SMTP process, 2) use some method to perform the address check (TCP map server? regular expressions? mysql?), and 3) implement the required action (connection termination). Additionally, there will probably be several methods to accomplish this, and another requirement would be to find that which best fits (ex: a network server might be faster than a flat-file lookup; or, if a large volume of mail might be affected by this check, it should be performed as early in the mail process as possible). Real-world example: The apolicy policy server (performs checks on addresses according to user-defined rules) is designed as a standalone TCP server that hooks into Postfix inside the smtpd component via the directive 'check_policy_service inet:127.0.0.1:10001' in the 'smtpd_client_restrictions' configuration option. This means that, when Postfix first receives an item of mail to be delivered, it will create a TCP connection to the policy server address:port for the purpose of determining if the client is allowed to send mail from this server (in addition to whatever other restrictions / restriction lookup methods are defined in that option); the proper action will be taken based on the server's response. Notes: 1)The Postfix architecture page describes some of this information in ascii art; what I am hoping for is distilled, condensed, reference material. 2) Please correct me if I am wrong on any level; there is a mountain of material, and I am just one man ;) Thanks!

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• Basic OpenVPN setup not working

  - by WalterJ89

  I am attempting to connect 2 win7 (x64+ x32) computers (there will be 4 in total) using OpenVPN. Right now they are on the same network but the intention is to be able to access the client remotely regardless of its location. The Problem I am having is I am unable to ping or tracert between the two computers. They seem to be on different subnets even though I have the mask set to 255.255.255.0. The server ends up as 10.8.0.1 255.255.255.252 and the client 10.8.0.6 255.255.255.252. And a third ends up as 10.8.0.10. I don't know if this a Windows 7 problem or something I have wrong in my config. Its a very simple set up, I'm not connecting two LANs. this is the server config (removed all the extra lines because it was too ugly) port 1194 proto udp dev tun ca keys/ca.crt cert keys/server.crt key keys/server.key # This file should be kept secret dh keys/dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt client-to-client duplicate-cn keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log verb 6 this is the client config client dev tun proto udp remote thisdomainis.random.com 1194 resolv-retry infinite nobind persist-key persist-tun ca keys/ca.crt cert keys/client.crt key keys/client.key ns-cert-type server comp-lzo verb 6 Is there anything I missed in this? keys are all correct and the vpn's connect fine, its just the subnet or route issue. Thank You EDIT it seems on the server the openvpn-status.log has the routes for the client SERVER OpenVPN CLIENT LIST Updated,Wed May 19 18:26:32 2010 Common Name,Real Address,Bytes Received,Bytes Sent,Connected Since client,192.168.10.102:50517,19157,20208,Wed May 19 17:38:25 2010 ROUTING TABLE Virtual Address,Common Name,Real Address,Last Ref 10.8.0.6,client,192.168.10.102:50517,Wed May 19 17:38:56 2010 GLOBAL STATS Max bcast/mcast queue length,0 END Also this is from the client.log file: Which seems to be correct C:\WINDOWS\system32\route.exe ADD 10.8.0.0 MASK 255.255.255.0 10.8.0.5 Another EDIT 'route print' on the server shows the route: Destination Mask Gateway Interface 10.8.0.0 255.255.255.0 10.8.0.2 10.8.0.1 the same on the client shows 10.8.0.0 255.255.255.0 10.8.0.5 10.8.0.6 So the routes are there.. what can the problem be? Is there anything wrong with my configs? Why would OpenVPN be having problems communicating?

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• load-causing processes disappearing from "top" ps -o pcpu shows bogus numbers

  - by Alec Matusis

  I administer a large number of servers, and I have this problem only with Ubuntu 10.04 LTS: I run a server under normal load (say load average 3.0 on an 8-core server). The "top" command shows processes taking certain % of CPU that cause this load average: say PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 11008 mysql 20 0 25.9g 22g 5496 S 67 76.0 643539:38 mysqld ps -o pcpu,pid -p11008 %CPU PID 53.1 11008 , everything is consistent. The all of the sudden, the process causing the load average disappears from "top", but the process continues to run normally (albeit with a slight performance decrease), and the system load average becomes somewhat higher. The output of ps -o pcpu becomes bogus: # ps -o pcpu,pid -p11008 %CPU PID 317910278 1587 This happened to at least 5 different severs (different brand new IBM System X hardware), each running different software: one httpd 2.2, one mysqld 5.1, and one Twisted Python TCP servers. Each time the kernel was between 2.6.32-32-server and 2.6.32-40-server. I updated some machines to 2.6.32-41-server, and it has not happened on those yet, but the bug is rare (once every 60 days or so). This is from an affected machine: top - 10:39:06 up 73 days, 17:57, 3 users, load average: 6.62, 5.60, 5.34 Tasks: 207 total, 2 running, 205 sleeping, 0 stopped, 0 zombie Cpu(s): 11.4%us, 18.0%sy, 0.0%ni, 66.3%id, 4.3%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 74341464k total, 71985004k used, 2356460k free, 236456k buffers Swap: 3906552k total, 328k used, 3906224k free, 24838212k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 805 root 20 0 0 0 0 S 3 0.0 1493:09 fct0-worker 982 root 20 0 0 0 0 S 1 0.0 111:35.05 fioa-data-groom 914 root 20 0 0 0 0 S 0 0.0 884:42.71 fct1-worker 1068 root 20 0 19364 1496 1060 R 0 0.0 0:00.02 top Nothing causing high load is showing on top, but I have two highly loaded mysqld instances on it, that suddenly show crazy %CPU: #ps -o pcpu,pid,cmd -p1587 %CPU PID CMD 317713124 1587 /nail/encap/mysql-5.1.60/libexec/mysqld and #ps -o pcpu,pid,cmd -p1624 %CPU PID CMD 2802 1624 /nail/encap/mysql-5.1.60/libexec/mysqld Here are the numbers from # cat /proc/1587/stat 1587 (mysqld) S 1212 1088 1088 0 -1 4202752 14307313 0 162 0 85773299069 4611685932654088833 0 0 20 0 52 0 3549 27255418880 5483524 18446744073709551615 4194304 11111617 140733749236976 140733749235984 8858659 0 552967 4102 26345 18446744073709551615 0 0 17 5 0 0 0 0 0 the 14th and 15th numbers according to man proc are supposed to be utime %lu Amount of time that this process has been scheduled in user mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). This includes guest time, guest_time (time spent running a virtual CPU, see below), so that applications that are not aware of the guest time field do not lose that time from their calculations. stime %lu Amount of time that this process has been scheduled in kernel mode, measured in clock ticks (divide by sysconf(_SC_CLK_TCK). On a normal server, these numbers are advancing, every time I check the /proc/PID/stat. On a buggy server, these numbers are stuck at a ridiculously high value like 4611685932654088833, and it's not changing. Has anyone encountered this bug?

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• Is it possible to "stealth" dual boot a machine?

  - by BrianH

  I have a loaner laptop that has MS Windows with locked down permissions. It works okay for what I need to do, but I started wondering if there was a way to install a separate Windows OS on a separate hard drive to do what I want to do on it. Virtual I wish I could use VirtualBox or VMWare, but that is not an option (I even tried VBox portable). External Drive My next trial was see if it was possible to install Windows on an external drive, and then plug that drive in and boot from it whenever I wanted my own OS. After a few Google searches, I see that is not really a possibility. Swap Primary Drive Another option, would be to get a second internal hard drive, take the existing HD out, and install a new Windows OS on the secondary HD. This would mean swapping the internal hard drive each time I want to switch OSs - doable, but not very convenient. Dual Boot The laptop has an expansion slot where a second hard drive can be plugged in quickly. I thought about Dual booting, but I don't want to mess with the MBR on the primary hard drive. When I have to give the laptop back, I don't want a dual-boot screen to popup. Summary Is there a way to have 2 hard-drives on a machine, each with it's own OS, and maybe use BIOS settings to have only 1 hard drive active at a time? That way both hard drives could be physically connected, but only one would actually be active at a time. I basically want a second OS that does not (can not) affect the existing OS in any way, and can be removed at any time without affecting the existing OS. The secondary OS does not need any of the files on the main hard drive - it's basically like having 2 separate computers using the same hard ware... Is this possible, or would it be easier just to go out and buy a different laptop? Thanks in advance! EDIT I just discovered that my BIOS allows me to pick (at startup) which hard drive I want to boot from. I poked around in the BIOS and there is not a place to disable certain devices, like the primary hard drive. My only concern about plugging in a second hard drive and installing Windows to the second hard drive is that it will mess with the primary hard drive, or add a bootloader screen to pick which windows install to use. My thought would be to physically unplug the primary, plug in the secondary and install windows to the secondary. After the install is working properly, I can plug the primary back in and use the BIOS feature to determine which drive to boot to. Is there any way after I have 2 separate installs on 2 separate hard drives that one of the installs could mess with the MBR on the other drive?

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