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• SSH hangs without password prompt

  - by Wilco

  Just reinstalled OS X and for some reason I now cannot connect to a specific machine on my local network via SSH. I can SSH to other machines on the network without any problems, and other machines can SSH to the problematic one as well. I'm not sure where to start looking for problems - can anyone point me in the right direction? Here's a dump of a connection attempt: OpenSSH_5.1p1, OpenSSL 0.9.7l 28 Sep 2006 debug1: Reading configuration data /etc/ssh_config debug1: Connecting to 10.0.1.7 [10.0.1.7] port 22. debug1: Connection established. debug1: identity file /Users/nwilliams/.ssh/identity type -1 debug1: identity file /Users/nwilliams/.ssh/id_rsa type -1 debug1: identity file /Users/nwilliams/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.5 debug1: match: OpenSSH_4.5 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.1 debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes128-cbc hmac-md5 none debug1: kex: client->server aes128-cbc hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY debug1: Host '10.0.1.7' is known and matches the RSA host key. debug1: Found key in /Users/nwilliams/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password,keyboard-interactive debug1: Next authentication method: gssapi-keyex debug1: No valid Key exchange context debug1: Next authentication method: gssapi-with-mic ... at this point it hangs for quite a while, and then resumes ... debug1: Unspecified GSS failure. Minor code may provide more information Server not found in Kerberos database debug1: Unspecified GSS failure. Minor code may provide more information Server not found in Kerberos database debug1: Unspecified GSS failure. Minor code may provide more information debug1: Next authentication method: publickey debug1: Trying private key: /Users/nwilliams/.ssh/identity debug1: Trying private key: /Users/nwilliams/.ssh/id_rsa debug1: Trying private key: /Users/nwilliams/.ssh/id_dsa debug1: Next authentication method: keyboard-interactive

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• Keynote presentation in conjunction with other app?

  - by Sören Kuklau

  The short version: I'd like to tell Apple Keynote to switch to a specific app (never leaving full-screen mode) before a certain slide appears, then display that slide as soon as I switch back. Some more details: I'm going to show off five major improvements in an upcoming release of our app. I want one slide highlighting the feature, then one or two showing some details, perhaps with screenshots. After that, so people get a better impression of what I'm talking about, I'll show it off live — to do this, I have to switch to a VM or remote session (since this is a Windows app). Then, I'd like to switch back and go to the next feature. I.e., it would be similar to Apple's "Demo" slides in a cursive font, except not with a different screen, or different computer. It's this switching back and forth that I want to make smooth, just to wow the audience a little. Can I perhaps do a "special" slide in Keynote that tells it to run an AppleScript? Better yet, to switch to an app, and wait until I switch back, and then automatically advance to the next slide?

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• Ripping CD Audio simultaneously from 2 drives on one PC via USB or PATA - rip accuracy preserved?

  - by Rob

  I'm considering ripping audio (reading audio) from CDs using 2 drives simultaneously to speed up the process of ripping the CDs - i.e. 2 at a time rather than 1. Are there any issues with achieving maximum rip accuracy? In general I wondered if people have tried this and if the simultaneous streams from both rip activities would overload the host machine and cause packet loss or read retries resulting in a sub-standard CD-DA Audio CD rip? If it just means the rip is slightly slower (but still faster than sequentially doing one rip followed by another) but still of maximum accuracy then that is OK for me. I will be using dbPowerAmp to rip the CDs and converting to FLAC lossless format. Specific examples: There are 2 machines I intend to do it on: A Toshiba NB100 1.6Ghz Atom netbook, 2Gb RAM, running Windows XP Home with 1 external LG DVD/CD burner and external 1 LG Blu-ray burner attached via USB 2.0, ripping to the machine's 5400rpm internal hard drive. This rips from one CD drive very well, more than adequate, it is a nippy, fast little machine for its specification. A Desktop PC running Windows 7 Home Premium with MSI P4M900M2-L/ MS-7255v2.0 motherboard and 1.86Ghz Intel Core 2 Duo E6320, 7200rpm hard drive and 2Gb RAM, with an internal LG PATA DVD/CD burner (master) and a Philips DVD/CD burner (slave) on the same PATA bus (perhaps separate buses would be another option to consider here). Thoughts?

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• Cannot run logwatch due to Date::Manip issue

  - by Quintin Par

  I tried to run logwatch at follows [root@machine cron.daily]# ./0logwatch ERROR: Date::Manip unable to determine TimeZone. Execute the following command in a shell prompt: perldoc Date::Manip The section titled TIMEZONES describes valid TimeZones and where they can be defined. My date is as follows root@machine cron.daily]# date Thu Aug 23 06:25:21 GMT 2012 Now based on details in various forums I tried to fix this by setting /etc/timezone to “+0800” but it didn’t work My /etc/localtime points to /usr/share/zoneinfo/GMT and is managed by puppet How do I go about fixing this? I still want all my machines to be in GMT timezone. EDIT: Sadly, Both the changes are not working: [root@machine cron.daily]# cat /etc/TIMEZONE UTC Quanta’s [root@machine cron.daily]# cat ~/.bash_profile # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs PATH=$PATH:$HOME/bin export TZ=GMT export PATH [root@machine cron.daily]# source ~/.bash_profile [root@machine cron.daily]# ./0logwatch ERROR: Date::Manip unable to determine TimeZone. Execute the following command in a shell prompt: perldoc Date::Manip The section titled TIMEZONES describes valid TimeZones and where they can be defined.

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• Making Apache 2.2 on SuSE Linux Case In-Sensitive. Which is a better approach?

  - by pingu

  Problem: http://<server>/home/APPLE.html http://<server>/hoME/APPLE.html http://<server>/HOME/aPPLE.html http://<server>/hoME/aPPLE.html All the above should pick this http://<server>/home/apple.html I implemented 2 solutions and both are working fine. Not sure which one is better(performance). Please Suggest..Also Directive - CheckCaseOnly on never worked Option 1: a)Enable:mod_speling In /etc/sysconfig/apache2 - APACHE_MODULES="rewrite speling apparmor......" b) Add directive - CheckSpelling on (Either in .htaccess or add in httpd.conf) In httpd.conf <Directory srv/www/htdcos/home> Order allow,deny CheckSpelling on Allow from all </Directory> or In .htaccess inside /srv/www/htdcos/home(your content folder) CheckSpelling on Option 2: a) Enable: mod_rewrite b) Write the rule vhost(you can not write RewriteMap in directory. check apache docs ) <VirtualHost _default_:80> <IfModule mod_rewrite.c> Options +FollowSymLinks RewriteEngine on RewriteMap lc int:tolower RewriteCond %{REQUEST_URI} [A-Z] RewriteRule (.*) ${lc:$1} [R=301,L] </IfModule> </VirtualHost> <VirtualHost _default_:80> <IfModule mod_rewrite.c> Options +FollowSymLinks RewriteEngine on RewriteMap lc int:tolower RewriteCond %{REQUEST_URI} [A-Z] RewriteRule (.*) ${lc:$1} [R=301,L] </IfModule> </VirtualHost> This changes the entire request uri into lowercase. I want this to happen for specific folder, but RewriteMap doesn't work in .htaccess. I am novice in regex and Rewrite. I need a RewriteCond which checks only /css//. can any body help

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• Dell Studio 17 - turning off suddenly

  - by studiohack

  I have a Dell Studio 17 laptop, a refurbished model almost 2 years old...It is currently running Windows 7 32-bit, Home Premium. Via a clean install, it is a Vista upgrade machine...A while back, a problem started to develop while running Vista that it would suddenly just turn off. No warnings, messages, anything. It was like I had the battery out, then just unplugged it from the wall. Just like that. Over several months of this happening (or more), I've observed several things...First, it only seems to happen when I'm doing memory-intensive things, such as watching a online video full screen or running many applications in the background...Second, I can tell when it is about to "flip" as I've termed it, when the fan starts running...the computer gets really hot in places... Anyways, I'm pretty sure this is a hardware problem, because it still exists, even after a Vista-to-7 Upgrade...Is this true? Hardware vs. software? Is there anything I can do to fix this? Is it just a specific component or what? What do you recommend? Thanks!!

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• Apache directory structure with multiple hosted languages.

  - by anomareh

  I just got a new work machine up and running and I'm trying to decide on how to set everything up directory wise. I've done some digging around and really haven't been able to find anything conclusive. I know it's a question with a variety of answers but I'm hoping there's some sort of general guidelines or best practices to go by. With that said, here are a few things specific to my situation. I will be doing actual development and testing on the same machine as the server. It is a single user machine in the sense that I will be the only one working on the machine. There will be multiple hosted languages, specifically PHP and RoR while possibly expanding later. I'd like the setup to translate well to a production environment. With those 3 things in mind there are a couple of things I've had in the back of mind. Seeing as it's a single user machine I haven't been able to decide whether or not I should be working on things out of my home directory or if they should be located outside of it. I'm feeling that outside of a user directory would be better as it would translate better to a production environment, but I'm also not sure if that will come with any permission annoyances or concerns seeing as I'll be working on the same machine. Hosting multiple languages seems like it may be a bit quirky. With PHP I've found you're generally just dumping the project somewhere in the document root where as something like a Rails app you have the entire project and you only want the public directory in the document root. Thanks for any insight, opinion, or just personal preference from experience anyone can offer.

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• redirect from mysite.com to www.mysite.com

  - by jml

  hi there, i know that this has been answered many many times, so if someone wants to point me to another thread that answers my question specifically, that is fine... for right now, my searches aren't yielding many results. so i have a website like mysite.com that has a flash swf embedded in it and i go to www.mysite.com ... all of the sudden, things don't work properly. i would like to get to the bottom of this, because it's not like the page just "doesn't load" at all; it loads and i can only do certain things; as if certain functionality is disabled (might be url requests for specific urls etc). do i need to manage this in my control panel? i wouldn't assume so, because the site loads; just has a crippled functionality from within the swf. i was thinking it might have more to do with my crossdomain.xml file; could this be the case? thanks for any tips or suggestions.

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• SQL Server 2008 Remote Access

  - by Timothy Strimple

  I'm having problems connecting to my SQL Server 2008 database from my computer. I have enabled remote connections as described in this answer (http://serverfault.com/questions/7798/how-to-enable-remote-connections-for-sql-server-2008). And I have added the ports listed on the microsoft support page to our Cisco Asa firewall and I'm still unable to connect. The error I'm getting from the SQL Management Studio is: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.) (Microsoft SQL Server, Error: 10060) Once again, I have double and triple checked that remote connections are enabled under the database properties and that TCP is enabled on the configuration page. I've added tcp ports 135, 1433, 1434, 2382, 2383, and 4022 as well as udp 1434 to the firewall. I've also checked to make sure that 1433 is the static port that is set in the tcp section of the database server configuration. The ports should be configured correctly in the firewall since http/https and rdp are all working and the sql server ports are setup the same way. What am I missing here? Any help you could offer would be greatly appreciated. Edit: I can connect to the server via TCP on the internal network. The servers are colocated in a datacenter and I can connect from my production box to my development box and vice versa. To me that indicates a firewall issue, but I've no idea what else to open. I've even tried allowing all tcp ports to that server without success.

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• How to setup equivalent USVIDEO.ORG DNS-Proxy on Linux

  - by Gary

  I have a VPS in the USA running Ubuntu. I want to setup something similar to http://www.usvideo.org Basically, USVIDEO is a DNS service that allows Canadians to access American content like Hulu, Netflix, NBC, and etc (restricted by geographical IP). Here is how I think USVideo does it: Clients (PS3, XBOX, PC) specifies the DNS server(s) as specified on USVIDEO.org's website. If the DNS request is a video/audio site such as Netflix or Pandora, forward the request to a proxy. Otherwise, for all other requests, forward it to a different DNS server. If the specific video/audio URL is requested, return the address of the proxy server, which in turn relays traffic to the destination video/audio domain via the U.S. gateway so that it appears that the access is coming from a U.S. IP address. Once the DNS request has passed the U.S. IP address check, their proxy server steps out of the loop and lets the video streaming site contact you directly to start the video stream. This trick relies on the way that the video streaming sites check the country of your IP address once up front, but don't actually check the country of the destination IP address while the video is streaming. What is elegant about this solution is that a VPN Tunnel is not required to bypass geographical IP checks from certain websites. All that is required on the client side is to specify the DNS server (the VPS). If a certain site is geographically locked, just forward the traffic to a proxy, and that's it. These sites can be specified in the DNS entries, or perhaps in the proxy service to redirect the DNS request to its own proxy. I believe what I need to setup something similar is Squid Proxy, IPTables, and DNS. What I need help is how to exactly approach this? Would Squid Proxy be setup as a transparent proxy?

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• chef clients behind firewall

  - by tec

  I am currently learning about chef. What I understood so far: I have to install chef-server on an own server or use the hosted chef. I have to install chef-client on the servers that I want to manage aka nodes (manually or using knife bootstrap). I installed several chef tools on my own PC that I can use to manage the nodes, e.g. knife. Now in my case the specialty is that the nodes are behind a firewall/load balancer/proxy. The nodes can access servers on the outside via NAT (http works and I can configure chef-specific hosts to work as well). However they can only be contacted from the outside via a ssh tunnel. There is really much documentation about chef available but I did not find an answer to these questions: When using knife, is it enough when I set up a ssh tunnel manually on my own PC or does the chef server need to contact the nodes? When using knife, can I configure it to setup a ssh tunnel automatically? When using the chef server web ui can I configure it to connect to the nodes via ssh tunnel or do I need a setup where I setup the tunnel myself e.g. using monit? Is this even possible with hosted chef? Instead of using knife or the web ui: Can I issue the same management commands directly on the nodes using chef-client? What solution would you recommend? Thanks a lot for taking your time to help and answering one or more of these related questions

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• Can't connect to Sql Server 2008 named instance

  - by eidylon

  I just installed Sql 2008 Express on a new server running Windows Server 2008. I know Sql is working properly, because I can connect to the db fine locally, on the server. I cannot connect to it from a client machine though, neither by IP address nor by machine name (iporname\instance). I know I have the correct IP address, because I am RDCing into the server to perform all this configuration and setup, and if I ping the server name, it is resolving to the correct IP address as well. On the server, I have set up an inbound firewall exception allowing all traffic on any port on any protocol to sqlservr.exe. In SSMS, in server > Properties > Connections Allow remote connections to this server is enabled. In Sql Server Configuration Manager, TCP/IP is enabled in both the Protocols for <instance> and the Client Protocols sections. I looked in the Windows logs, but don't see anything about connections being denied or dropped. As far as I can see, I have everything set right, but cannot connect from a client machine. The client CAN connect to other Sql 2008 Express servers okay, so I know the client configuration is correct. Any ideas where else I can look for info of what/where/how this connection is dropping, greatly apprecaited! The error being returned by the client is: **TITLE: Connect to Server** Cannot connect to [MY.IP.ADD.RSS]\[MYINSTNAME]. ADDITIONAL INFORMATION: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1)

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• Can't Connect To Local Mysql Using IP Address, but CAN connect from remote server

  - by user1782041

  Here's an interesting one that does not seem to fall into any of the mysql connection issues I've read about or searched for: On an Ubuntu 12.04 box I had some system updates waiting to install, and I took care of that this evening. After the install, I started seeing some errors in my syslog complaining about a particular php script that could no longer connect to the mysql instance on the box. Here is the specific error: PHP Warning: mysql_connect(): Can't connect to MySQL server on '192.168.0.40' (4) Now, the server's IP address is 192.168.0.40, and I've checked to make sure that I have mysql listening on 0.0.0.0 so that I can connect using either "localhost" or "192.168.0.40". Here's where things get odd: From the local machine, if I try the following: mysql -uroot -p -h192.168.0.40 I get this error: ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.0.40' (110) I've checked, and error 110 indicates an OS timeout, and error 2003 is the mysql generic "can't connect" error. This indicates that it is not permissions with the user. However, if I do the same thing from a remote machine (say, from 192.168.0.30), I log right in with no problems. Futher, other scripts on the local machine that connect to mysql using "localhost" for the host rather than "192.168.0.40" connect with no problems. Also, I can connect via the mysql socket with no problems both from the command line and php scripts. So, this feels like a networking issue of some kind on the local box, but there are no iptables rules on this box (it is firewalled externally) and I can't figure out what else may be causing this. This problematic script worked perfectly prior to the latest system update. For now, I'll simply change the script to connect via localhost, but I'd really like to know why it broke for 2 reasons: There may be other scripts that connect using 192.168.0.40 that don't run very often which are now broken. Auditing them all will take more time than I feel like devoting at the moment. I'm curious, and want to know why it broke so I can fix it correctly. Any help?

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• what's the difference between a Volume and a Partition in Windows 7 diskpart

  - by user170232

  I was trying to follow the Intel guide for setting up iRST (Intel Rapid Start Technology) on my new laptop. The Intel manual says you need to create a *Volume that is as big or bigger than your available memory, set it to a specific id (id=84), then go into the iRST tool and adjust some settings. Looking at the disk manager on the laptop, I see there is already a Partition labeled as "Hibernation Partition" which is a little bigger than the memory in my system. So it looks like iRST was already set up...BUT, it's a Partition, not a Volume. Here's what the manual says to do: (from: http://download.intel.com/support/motherboards/desktop/sb/rapid_start_technology_user_guide.pdf) diskpart list disk select disk x (where x is the disk to use, there's only one disk in this laptop) create partition primary size=X000 (where X000 is the size to create) detail disk (which lists details for the disk. This is where i get hung up) select volume Z (where Z is the *partition you created previously) ** it says the 'detail disk' command will list the volume #, but it doesn't. ** 'detail disk' only lists two "volumes" for Recovery and OS. ** if i do 'list partition', i see the 8 GB *partition labeled as "Hibernation Partition") ** so I can't continue with the following steps: set id=84 override exit The reason I went looking for the manual is because when iRST is enabled in the BIOS, the system won't resume from sleep. When it's disabled, it works fine, but the system goes into (legacy?) Hibernation mode and takes a while to come out of Hibernation. the iRST is supposed to resume from deep sleep very quickly. So, what's the difference between a Volume and a Partition? Should I delete the Hibernation Partition and create a Hibernation Volume? Anyone have any ideas? (if it matters, this is on a Dell XPS 13 with BIOS A08) Thanks! J

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• How to connect to local instance of SQL Server 2008 Express

  - by Billy Logan

  I just installed SQL Server 2008 Express on my windows 7 machine. I previously had 2005 on here and used it just fine with the old SQL Server Management Studio Express. I was able to connect with no problems to my PC-NAME\SQLEXPRESS instance. I uninstalled 2005 and SQL Server Management Studio Express. I then installed SQL Server 2008 Express on my machine and elected to have it install SQL Server Management Studio. Now, when I try to connect to PC-NAME\SQLEXPRESS (with Windows Authentication, like I always did), I get the following message: Cannot connect to PC-NAME\SQLEXPRESS. A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) (Microsoft SQL Server, Error: -1) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&EvtSrc=MSSQLServer&EvtID=-1&LinkId=20476 When I went to the help link it mentions, the help page suggests the following: * Make sure that the SQL Server Browser service is started on the server. * Use the SQL Server Surface Area Configuration tool to enable SQL Server to accept remote connections. For more information about the SQL Server Surface Area Configuration Tool, see Surface Area Configuration for Services and Connections. I did try starting the SQL Server Browser, but don't see that the Surface Area Configuration is installed with this express version. I had seen another user with an almost exact same issue that was missing the database engine on install. If that were the case how could i test for that and where would i go to download that install. Thanks in advance, Billy

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• Squid, authentication, Outlook Anywhere, Windows 7 and HTTP 1.1 = NIGHTMARE

  - by Massimo

  I'm running a Squid proxy (latest version, 3.1.4) on Linux CentOS 5.4 with Samba 3.5.4, in order to allow authenticated web access for domain users; everything works fine, and even Windows 7 clients are fully supported. Authentication is transparent for domain users, while it is explicitly requested for non-domain ones, and it works if the user can provide valid domain credentials. All nice and good. Then, Outlook Anywhere kicks in and pain and suffering ensue. When Outlook (be it 2007 or 2010, it doesn't matter) runs on Windows XP clients, it connects gracefully through the Squid proxy to its remote Exchange server. When it runs on Windows 7, it doesn't. If the authentication requirement is lifted from the proxy, everything works on Windows 7 too, so the problem is obviously related to NTLM authentication with Squid. Digging more deeply (WireShark), I discovered Outlook Anywhere uses HTTP 1.1 when it runs on Windows 7, while it uses HTTP 1.0 when on Windows XP. And it looks like Squid, even in its latest incarnation, still has some serious troubles handling HTTP 1.1 properly, particularly when SSL and proxy authentication are thrown in the mix. While waiting for Squid to fully and officially support HTTP 1.1 (and it looks like this could take quite a long time), I'm looking for one of the following solutions: Make Squid handle this correctly, if it is at all possible. Identify Outlook Anywhere connections and have Squid not require authentication for them. But it isn't easy: again, the behaviour of Outlook differs when running on Windows XP and Windows 7, and while on Windows XP Outlook sends a really nice user-agent string of "MSRPC", on Windows 7 it doesn't send any (why? WHY?!?). Force Outlook Anywhere to use HTTP 1.0 even when running on Windows 7. And no, this is not as simple as deselecting "use HTTP 1.1" in Internet Explorer, looks like Outlook ignores that setting and chooses on its own which protocol to use. Any other feasible solution which doesn't involve whitelisting specific destination Exchange servers, which is the last-resort solution I'm trying to avoid.

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• MICR / Check printing

  - by drewk

  I want to print my own checks on blank stock from Quicken and QuickBooks. To do so, I need a virtual driver that intercepts the print output from Quicken formats the fields properly, and adds the MICR text at the bottom of the check. This is for Windows 7 or OS X. I have looked at the following: CHAX Works, but crashes a LOT. Not giving me confidence. It is also expensive. VersaCheck Looks promising but looks like it suffers severe feature bloat. I just want to print check and deposit slips, thank you. Ganson Is only for high volume really. It is also designed for batch use vs I just want to print to a virtual printer. More than $2500. GnuMICR is more of a science project. Not yet ready to use and has not been updated for years. There are a lot of solutions on the web, so please don't just google for me. I am looking for specific experience with good solid check printing solution. Thanks!!!

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• AMIs in Amazon EC2

  - by Jack of Trades

  I really like the Amazon EC2 environment, and thought I'll spend a bit of time playing around with various types of public (Windows!) AMI servers. But testing has been a bit, well, questionable. Some of my findings: It's very difficult to know what exactly a specific public EC2 image is supposed to be doing. Many images come with little to no information. I can't seem to find the passwords to log onto various windows images. Why are they public if they can't be used!? Lots of images are based on S3, and not EBS backed. This is very annoying, as S3 takes a lot longer to do pretty much anything (stop, image etc.) I am only testing images here, so of-course I don't question the value of S3 for other attributes. The description of what an image does is almost useless and many times confusing. Have others come across these EC2 issues. Again, my interest was to just play around with public images for testing/experimentation/etc, and therefore these issues may not be too relevant for more normal EC2 deployment uses.

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• Backup, Migrate or Clone Failing CentOS 4 (LVM)

  - by Hegelworm

  Hello there, I've been running a BlueQuartz CentOS 4 system (Nuonce.net distro) for a few years now and although the hard drive (Deskstar) has always been a bit noisy, on a few recent occasions I've heard it having trouble spinning up. Basically, I want to clone this drive to a similar sized one (80 Gig). I've spent many hours reading upon dd, dd_rescue, rsync, clonezilla and LVM mirroring yet the sheer number of options and nightmarish accounts has left me frozen - unable to make an informed decision as to how to start. I've made a few attempts. dd failed after about 2 hours, as, although the drives appeared to be identical on the surface (ATA Seagate Barracudas, Thai not Chinese), the destination drive is slightly smaller. My most recent attempt involved using a Debian CD to format the new drive and then rsync-ing everything over and editing the new drive's grub and fstab to reflect the changes. No joy here either as I hadn't chosen LVM when partitioning the destination drive and it wouldn't boot. As you can probably tell, I'm out of my depth here and a panic-invoking mixture of caution and frustration has prompted me to sign up here. The server itself, although not strictly a production environment, has a very specific installation of Festival, LAME and ffMpeg and provides the back-end for a Text-to-Speech jQuery plugin that I've built over the last 2 years. I'm also planning to rebuild the whole TTS system on Debian as the existing CentOS system still has PHP4 etc. For now though, I'd really like to just shift everything over to a new drive. As this is my first post, please feel free to lay any house rules on me that I might've overlooked; I've been hovering around StackOverflow for a while now but have only just signed up. Many thanks.

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• Hostname error on my Slicehost Ubuntu server

  - by allesklar

  Like many folks who upgraded to Rails 2.2, I got an exception raised when sending an email. This version of Rails or later does require using tls for sending emails. The message in the production log file says: hostname was not match with the server certificate I did a whole lot of research and work on this and did everything I could. I changed my slice's hostname to ohlalaweb.com. If I run the command 'hostname' at the CL I get: ohlalaweb.com Postfix seems to work fine. I can send emails from the CL to my gmail, yahoo, and google apps gmail accounts with no problems. Here is the result of cat /etc/postfix/main.cf # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. myorigin = /etc/mailname smmtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ohlalaweb.pem smtpd_tls_key_file=/etc/ssl/certs/ohlalaweb.pem smtpd_use_tls=yes # SA created next line to force postfix to use self create certificate smtpd_tls_auth_only=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = ohlalaweb.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = localhost.localdomain, localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all I have regenerated the ssl keys with the ohlalaweb.com host name. Any ideas or suggestions?

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• Is On-The-Fly string replacement possible using GreaseMonkey and Firefox

  - by Gary M. Mugford

  I have looked for means to stop Brightcove videos from autostarting in Firefox and have come to the conclusion it isn't possible without external programming via something like Grease Monkey. However, I'm not proficient in javascript let alone GM. So I thought I'd ask here first whether what I want to do is feasible, or whether it's a fool's errand. What I want to accomplish is have a site specific script executed to replace a string value on the run in that site's code. Specifically, what I am looking for is something GM-style that would do this: if site_domain = 'www.SiteWithAutoPlayVideos.com' then replace_all('<param name="autoStart" value="true" />', '<param name="autoStart" value="false" />'); Having looked through Super User for anything GreaseMonkey that might relate, I see notices that the sandbox GM executes scripts in has to remain separate for security reasons. So, I suspect I might be in for disappointment. BUT if it is accomplishable and somebody here can confirm it, then I will do my best to struggle through the learning curve and get this noisome little problem put to rest. Yes, I have tried Flash Block and FlashDisable in order to attack this issue with no avail. Thanks in advance for your time.

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• Group Policy GPO not 'seen' at client

  - by fukawi2

  I have a new OU (natorg.local\NATO\Users) that I am trying to apply GP to. I have created a new user in this OU, and linked the 3 GPO's to this OU: DESKTOP - Folder Redirection (AppData) DESKTOP - Folder Redirection (Desktop) DESKTOP - Folder Redirection (Documents) Hopefully the names are sufficient to suggest what they do exactly. The settings are under User Settings so there is no Loopback processing required (if my understanding is correct). GP Modelling for the user and specific computer says that the GPOs will/should be applied, however on the client, gpresult doesn't even appear to see the GPOs under either "Applied" or "Not Applied": USER SETTINGS -------------- CN=Amir,OU=Users,OU=NATO,DC=natorg,DC=local Last time Group Policy was applied: 25/06/2012 at 11:07:13 AM Group Policy was applied from: svr-addc-01.natorg.local Group Policy slow link threshold: 500 kbps Applied Group Policy Objects ----------------------------- LAPTOPS - Power Settings WSUS - Set Server Address OUTLOOK - Auto Archive SECURITY - Lock Screen After Idle Default Domain Policy DESKTOP - Regional Settings NETWORK - Proxy Configuration NETWORK - IE General Config OFFICE - Trusted Locations OFFICE - Increase Privacy OUTLOOK - Disable Junk Filter DESKTOP - Disable Windows Error Reporting DESKTOP - Hide Language Bar NETWORK - Disable Skype DESKTOP - Disable Thumbs.db Creation WSUS - Set Server Address The following GPOs were not applied because they were filtered out ------------------------------------------------------------------- Local Group Policy Filtering: Not Applied (Empty) NETWORK - Google Chrome Configuration Filtering: Not Applied (Empty) SYSTEM - Event Log Configuration Filtering: Not Applied (Empty) SECURITY - Local Administrator Password Filtering: Not Applied (Empty) NETWORK - Disable Windows Messenger Filtering: Not Applied (Empty) SECURITY - Audit Policy Filtering: Not Applied (Empty) WSUS - Automatic Install Filtering: Not Applied (Empty) NETWORK - Firewall Configuration Filtering: Not Applied (Empty) DESKTOP - Enable Offline Files Filtering: Not Applied (Empty) I haven't altered permissions on the GPO's at all, no WMI filtering... As I said, GP Modelling says that they should be applied. GPResult on the client correctly identifies itself as being the correct OU (CN=Amir,OU=Users,OU=NATO,DC=natorg,DC=local) There are 2 x 2008R2 and a 2003 DC, domain is 2003 level, client is Windows XP SP3. Can anyone suggest why these GP Objects would be "invisible" to the client?

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• Intermittent PHP error: Undefined function <core function>

  - by Daniel

  In the last week I've been coming across an incredibly annoying error on one of Slicehost slices. It appears that every now and then PHP will fail with a fatal error, saying a certain function is undefined. The function changes, but is always a core PHP function e.g. defined(), version_compare(), etc. This problem has occurred while using several different PHP applications - PHPMyAdmin, my own custom built apps, etc, leading me to believe that the problem is not specific to the running code. Here are some details: - Debian Lenny - Apache 2.2.9 - PHP 5.2.6-1+lenny4 with Suhosin-Patch (running eAccelerator 0.9.6) Apache and PHP are installed from Debian packages. Error logs show nothing out of the ordinary. I thought memory might be an issue, but free -m reports upwards of 100MB free almost all the time. Another thing I'm trying to investigate is if the problem might be related to eAccelerator, but testing this theory out is incredibly hard because the issue doesn't appear very often and I've been using eAccelerator for months on this install without any problems up until now. Has anyone ever come across anything like this? Why would PHP report undefined core functions?

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• Setting up Squid -> VPN connection

  - by Nedlinin

  I recently purchased a VPS and am wanting to use it as a VPN server. However, it has bandwidth limitations. So, I figured since I already have a local Squid proxy caching things for me, I could have users connect to the proxy and the proxy connect to the VPN. Then when someone hits the web, Squid will serve it from cache if available and, if not, it will use the VPN to download it. My issue is, I have no idea how to set this up :p - Essentially I want Machine - Squid - VPN. My VPN is running on Ubuntu Server with pptpd. Squid is running on a local Arch Linux box. Squid and the VPN are both working perfectly independently. Any help on how to have Squid push traffic through the VPN would be greatly appreciated! Also: I don't actually want to use the VPN for all traffic. Otherwise, I'd just connect my router to the VPN and be happy. I only want to use it for web traffic from specific machines on the network.

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• Rack layout for future growth

  - by bleything

  We're getting ready to move to a new colo facility and I'm designing the rack layout. While we have a full rack, we only have 12U worth of hardware right now: 1x 1U switch 7x 1U servers 1x 2U server 1x 2U disk shelf The colo facility requires us to front-mount the switch and use a 1U brush strip, so we'll be using a total of 13U of space. Regarding growth, I'm reasonably sure we'll be adding another 4U in servers, 1-2U of network gear, and 2-4U of storage in the mid-term. Specific questions I'm hoping to get help with: where should I mount the switch? the LEDs are on top... should I group the servers by function with space for adding new machines? as an alternative, should I group servers based on whether they are production or staging? where in the rack should I start? in the middle? at the top? at the bottom? equally spaced? Here's a silly little ASCII diagram of what I'm thinking right now. Please feel free to tear my design apart, I've really no idea what I'm doing :) Any advice is very welcome. edit: to be clear, the colo is providing redundant power with UPS and generator, so that's why there's no power gear in the plan, except for the 0U PDU that I didn't diagram. 42 | -- switch ---------------------- 41 | -- brush strip ----------------- 40 | ~~ reserved for second switch ~~ 39 | ~~ reserved for firewall ~~~~~~~ 38 | 37 | -- admin01 --------------------- 36 | 35 | -- vm01 ------------------------ 34 | -- vm02 ------------------------ 33 | ~~ reserved for vm03 ~~~~~~~~~~~ 32 | ~~ reserved for vm04 ~~~~~~~~~~~ 31 | ~~ reserved for vm05 ~~~~~~~~~~~ 30 | 29 | -- web01 ----------------------- 28 | -- web02 ----------------------- 27 | ~~ reserved for web03 ~~~~~~~~~~ 26 | ~~ reserved for web04 ~~~~~~~~~~ 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | -- db01 ------------------------ 15 | +- disks ----------------------+ 14 | +------------------------------+ 13 | ~~ reserved for more ~~~~~~~~~~~ 12 | ~~ db01 disks ~~~~~~~~~~~~~~~~~~ 11 | 10 | +- db02 -----------------------+ 9 | +------------------------------+ 8 | ~~ reserved for db02 ~~~~~~~~~~~ 7 | ~~ disks ~~~~~~~~~~~~~~~~~~~~~~~ 6 | ~~ reserved for more ~~~~~~~~~~~ 5 | ~~ db02 disks ~~~~~~~~~~~~~~~~~~ 4 | 3 | 2 | 1 |

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