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• Ubuntu 11.10, using wget/curl fails with ssl

  - by Greg Spiers

  Note: See edit 3 for solution On a completely new install of Ubuntu I'm getting the following errors when using wget: wget https://test.sagepay.com --2012-03-27 12:55:12-- https://test.sagepay.com/ Resolving test.sagepay.com... 195.170.169.8 Connecting to test.sagepay.com|195.170.169.8|:443... connected. ERROR: cannot verify test.sagepay.com's certificate, issued by `/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL SGC CA': Unable to locally verify the issuer's authority. To connect to test.sagepay.com insecurely, use `--no-check-certificate'. I've tried installing ca-certificates and configuring the ca-certs and they appear to all be setup in /etc/ssl/certs. The same issue exists for cURL: curl https://test.sagepay.com curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed Which leads me to believe it's something wrong with openssl server wide. wget and curl both work correctly locally on OSX and I have confirmed with a few people that it's working on their servers so I suspect it's nothing to do with the server I'm attempting to connect to. Any ideas or suggestions on things to try to narrow it down? Thank you Edit As requested verbose output from curl curl -Iv https://test.sagepay.com * About to connect() to test.sagepay.com port 443 (#0) * Trying 195.170.169.8... connected * Connected to test.sagepay.com (195.170.169.8) port 443 (#0) * successfully set certificate verify locations: * CAfile: none CApath: /etc/ssl/certs * SSLv3, TLS handshake, Client hello (1): * SSLv3, TLS handshake, Server hello (2): * SSLv3, TLS handshake, CERT (11): * SSLv3, TLS alert, Server hello (2): * SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed * Closing connection #0 curl: (60) SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed More details here: http://curl.haxx.se/docs/sslcerts.html Edit 2 Using the hash from your comment I see this: ubuntu@srv-tf6sq:/etc/ssl/certs$ ls -al 7651b327.0 lrwxrwxrwx 1 root root 59 2012-03-27 12:48 7651b327.0 -> Verisign_Class_3_Public_Primary_Certification_Authority.pem ubuntu@srv-tf6sq:/etc/ssl/certs$ ls -al Verisign_Class_3_Public_Primary_Certification_Authority.pem lrwxrwxrwx 1 root root 94 2012-01-18 07:21 Verisign_Class_3_Public_Primary_Certification_Authority.pem -> /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt ubuntu@srv-tf6sq:/etc/ssl/certs$ ls -al /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt -rw-r--r-- 1 root root 834 2011-09-28 14:53 /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt ubuntu@srv-tf6sq:/etc/ssl/certs$ more /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt -----BEGIN CERTIFICATE----- MIICPDCCAaUCEDyRMcsf9tAbDpq40ES/Er4wDQYJKoZIhvcNAQEFBQAwXzELMAkG A1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFz cyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTk2 MDEyOTAwMDAwMFoXDTI4MDgwMjIzNTk1OVowXzELMAkGA1UEBhMCVVMxFzAVBgNV BAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAzIFB1YmxpYyBQcmlt YXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGfMA0GCSqGSIb3DQEBAQUAA4GN ADCBiQKBgQDJXFme8huKARS0EN8EQNvjV69qRUCPhAwL0TPZ2RHP7gJYHyX3KqhE BarsAx94f56TuZoAqiN91qyFomNFx3InzPRMxnVx0jnvT0Lwdd8KkMaOIG+YD/is I19wKTakyYbnsZogy1Olhec9vn2a/iRFM9x2Fe0PonFkTGUugWhFpwIDAQABMA0G CSqGSIb3DQEBBQUAA4GBABByUqkFFBkyCEHwxWsKzH4PIRnN5GfcX6kb5sroc50i 2JhucwNhkcV8sEVAbkSdjbCxlnRhLQ2pRdKkkirWmnWXbj9T/UWZYB2oK0z5XqcJ 2HUw19JlYD1n1khVdWk/kfVIC0dpImmClr7JyDiGSnoscxlIaU5rfGW/D/xwzoiQ -----END CERTIFICATE----- But doing the steps myself I end up with a different hash: strace -o /tmp/foo.out curl -Iv https://test.sagepay.com and grep ssl /tmp/foo.out open("/lib/x86_64-linux-gnu/libssl.so.1.0.0", O_RDONLY) = 3 stat("/etc/ssl/certs/415660c1.0", {st_mode=S_IFREG|0644, st_size=834, ...}) = 0 open("/etc/ssl/certs/415660c1.0", O_RDONLY) = 4 stat("/etc/ssl/certs/415660c1.1", 0x7fff7dab07b0) = -1 ENOENT (No such file or directory) readlink -f /etc/ssl/certs/415660c1.0 /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt more /usr/share/ca-certificates/mozilla/Verisign_Class_3_Public_Primary_Certification_Authority.crt -----BEGIN CERTIFICATE----- MIICPDCCAaUCEDyRMcsf9tAbDpq40ES/Er4wDQYJKoZIhvcNAQEFBQAwXzELMAkG A1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFz cyAzIFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTk2 MDEyOTAwMDAwMFoXDTI4MDgwMjIzNTk1OVowXzELMAkGA1UEBhMCVVMxFzAVBgNV BAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAzIFB1YmxpYyBQcmlt YXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGfMA0GCSqGSIb3DQEBAQUAA4GN ADCBiQKBgQDJXFme8huKARS0EN8EQNvjV69qRUCPhAwL0TPZ2RHP7gJYHyX3KqhE BarsAx94f56TuZoAqiN91qyFomNFx3InzPRMxnVx0jnvT0Lwdd8KkMaOIG+YD/is I19wKTakyYbnsZogy1Olhec9vn2a/iRFM9x2Fe0PonFkTGUugWhFpwIDAQABMA0G CSqGSIb3DQEBBQUAA4GBABByUqkFFBkyCEHwxWsKzH4PIRnN5GfcX6kb5sroc50i 2JhucwNhkcV8sEVAbkSdjbCxlnRhLQ2pRdKkkirWmnWXbj9T/UWZYB2oK0z5XqcJ 2HUw19JlYD1n1khVdWk/kfVIC0dpImmClr7JyDiGSnoscxlIaU5rfGW/D/xwzoiQ -----END CERTIFICATE----- Any other ideas? Thank you for the help so far :) Edit 3 So it turns out that installing the ca-certificates package didn't install the one that I needed. I found this post about certificates being presented out of order. This seems to be the case with my request to sagepay. The solution ended up being to install another CA certificate from Verisign. I'm not sure why this fixes the issue with it being out of order but it does, but I suspect the out of order issue really isn't a problem at all and it was infact because I was missing a certificate all along. The additional certificate is available in that post but I didn't want to blindly trust it. I've looked at the list of CA certificates from cURL's site and it is listed there so I do trust it. The certificate: Verisign Class 3 Public Primary Certification Authority ======================================================= -----BEGIN CERTIFICATE----- MIICPDCCAaUCEHC65B0Q2Sk0tjjKewPMur8wDQYJKoZIhvcNAQECBQAwXzELMAkGA1UEBhMCVVMx FzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAzIFB1YmxpYyBQcmltYXJ5 IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MB4XDTk2MDEyOTAwMDAwMFoXDTI4MDgwMTIzNTk1OVow XzELMAkGA1UEBhMCVVMxFzAVBgNVBAoTDlZlcmlTaWduLCBJbmMuMTcwNQYDVQQLEy5DbGFzcyAz IFB1YmxpYyBQcmltYXJ5IENlcnRpZmljYXRpb24gQXV0aG9yaXR5MIGfMA0GCSqGSIb3DQEBAQUA A4GNADCBiQKBgQDJXFme8huKARS0EN8EQNvjV69qRUCPhAwL0TPZ2RHP7gJYHyX3KqhEBarsAx94 f56TuZoAqiN91qyFomNFx3InzPRMxnVx0jnvT0Lwdd8KkMaOIG+YD/isI19wKTakyYbnsZogy1Ol hec9vn2a/iRFM9x2Fe0PonFkTGUugWhFpwIDAQABMA0GCSqGSIb3DQEBAgUAA4GBALtMEivPLCYA TxQT3ab7/AoRhIzzKBxnki98tsX63/Dolbwdj2wsqFHMc9ikwFPwTtYmwHYBV4GSXiHx0bH/59Ah WM1pF+NEHJwZRDmJXNycAA9WjQKZ7aKQRUzkuxCkPfAyAw7xzvjoyVGM5mKf5p/AfbdynMk2Omuf Tqj/ZA1k -----END CERTIFICATE----- I put this in a file in: /usr/share/ca-certificates/curl/Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.crt I then modified the /etc/ca-certificates.conf and added the following line at the end: curl/Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.crt After that I ran the command: sudo update-ca-certificates Looking into the /etc/ssl/certs directory I see it correctly linked: ls -al | grep cURL lrwxrwxrwx 1 root root 69 2012-03-27 16:03 415660c1.0 -> Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.pem lrwxrwxrwx 1 root root 69 2012-03-27 16:03 7651b327.0 -> Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.pem lrwxrwxrwx 1 root root 101 2012-03-27 16:03 Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.pem -> /usr/share/ca-certificates/curl/Verisign_Class_3_Public_Primary_Certification_Authority-from_cURL.crt And everything works! curl -I https://test.sagepay.com HTTP/1.1 200 OK...

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• Physical Access Control using Active Directory ?

  - by Kedare

  Hello, I would like to know if there is a way to use Active Directory for Physical Access Control ? Example: All users will have a RFID card or a fingerprint entry registered on the domain (linked to the user name), and I would like to secure the buildings (doorlock, airlock) using this and controlled by Active Directory (ex: authorizing a group to use some doors, disabling the user will make the RFID/Fingerprint ineffective, access logging) Is this possible ? Thank you

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• FFMpeg installation problem

  - by Thomas

  Hi I have problem installing ffmpeg. I follow this url: https://www.crucialp.com/resources/tutorials/server-administration/how-to-install-ffmpeg-ffmpeg-php-mplayer-mencoder-flv2tool-LAME-MP3-Encoder-libog.php Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# yum install subversion ruby ncurses-devel Loading "installonlyn" plugin Setting up Install Process Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg -bash: svn: command not found [root@02e7709 src]# svn command not found and throws error Error: Cannot find a valid baseurl for repo: updates I am installing in fedora core 6 64 bit

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• VMWare Converter - Remote Linux Install P2V

  - by Zed Said

  I am trying to get what I thought was an easy process working. Here is my situation. I have a remote linux server (running Debian) that I would like to turn into a VM so that I can do testing on it rather than the production server. I downloaded VMWare Converter. I went to the "convert machine" wizard, chose Powered-on machine, entered my remote machine details. Clicking next shows that it correctly connects to my remote linux box. Now, on the next screen, for Destination type, it enters "WMWare Infrastructure virtual machine", and I can't change this. This is where I am stuck. Why do I need another sever to convert with? Is this where my VM gets sent to? And why can't I just convert the VM and save it on the computer that I am running the converter program on? If I do have to use a vmware infrastructure destination, I am confused at what ESX is, why and how I use it. Any help with this process would be more than appreciated!

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• Can't create PID file on MySQL server, permission denied

  - by James Barnhill

  The MySQL server won't start and is reporting the following error: /usr/local/mysql/bin/mysqld: Can't create/write to file '/usr/local/mysql/data/James-Barnhills-Mac-Pro.local.pid' (Errcode: 13) Can't start server: can't create PID file: Permission denied All the permissions are set recursively as: lrwxr-xr-x 1 _mysql wheel 27 Nov 22 09:25 mysql -> mysql-5.5.18-osx10.6-x86_64 but it won't start. I've tried reinstalling several times to no avail. I'm running as root on Mac OS, and MySQL has read, write, and execute permissions on the "data" folder.

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• setting ulimit and ubuntu 8.04

  - by Wizzard

  Hi there, We have two ubuntu 8.04 servers. With the database server I set the table_cache to 1000 however when I restart mysql the status only shows 257 and the open files limit says 1024 I adjusted ulimit by doing ulimit -n 8192 and then restarting mysql; this seemed to do the tick however after a few hours I did ulimit -n and saw it had returned back to 1024 Bit of a worry. I edited the /etc/security/limits.conf and added mysql soft nofile 8192 mysql hard nofile 8192 then rebooted, no change. I then edited and change mysql to * rebooted, no change I then edited and changed it to one line * - nofile 8192 and rebooted, no change. cat /proc/sys/fs/file-max gives me 768730 sysctl fs.file-max gives me fs.file-max = 768730 I am at a bit of a loss to how I can set and keep the ulimit value set so I can increase the table cache properly on mysql.

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• Should Windows Multipoint Server stations on individual video cards support hardware video acceleration?

  - by villares

  I've set up a test machine with multiple PCI-e nVidia GF440 Video cards and installed Windows Multipoint Server 2011. I use the same kind of hardware set up with a BeTwin multiseat solution to create a class lab for Google SketchUp teaching (highly OpenGL dependent) and it works ok. On the Multipoint Windows test machine the drivers seem to be installed OK but I don´t seem to get any hardware video acceleration. Is this a intrinsic limitation of this solution or am I doing something wrong?

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• CentOS Backup BASH Script

  - by user1062058

  I just wrote this script for backing up everything into a tar.gz file. Does it look okay? How can I get the tar file to transfer itself over to another server after executing? FTP from itself? I'm going to put this script into a weekly cron. #!/bin/bash rm ~/backup.tar.gz #removes old backup BACKUP_DIRS=$HOME #$HOME is builtin, it goes to /home/ and all child dirs tar -cvzf backup.tar.gz $BACKUP_DIRS # run tar -zxvf to extract backup.tar.gz Thanks.

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• exim4 - disable autoreplies about "SMTP error from remote mail server after RCPT"

  - by osgx

  Hello I have a setup of exim4 on domain1 in front of other server, domain2 (with sendmail). Second server have no direct access to internet, so domain1 is MX for domain2. And domain2 is set as hubbed_host in the exim4 on domain1. When spammer sends message for no_such_user@domain2, its sendmail do a reject: 550 5.1.1 <no_such_user@domain2>... User unknown Then, exim4 at domain1 do an auto-reply like this: This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: no_such_user@domain2 SMTP error from remote mail server after RCPT TO:<no_such_user@domain2>: host 10.0.0.1 [10.0.0.1]: 550 5.1.1 <no_such_user@domain2>... User unknown The spammers uses fake "from" field, and such generated messages are frozen by exim for a long time. How can I disable some or all autoreplies from exim4? Ideally, I want a filter, if message was not delivered with error "User unknown" than don't generate any autoreply from mailer-daemon. Thanks!

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• Justifying a memory upgrade

  - by AngryHacker

  My employer has over a thousand servers (running SQL Server 2005 x64 and a couple of other apps) all across the country. And in my opinion they are all massively underpowered for what they need to do. Specifically, I feel that the servers simply do not have enough RAM for the amount of volume the machines are asked to do. All the servers currently have 6GB of RAM. The users are pretty much always complaining about performance (mostly because, immo, the server dips into the paging file quite often). I finally convinced the powers that be to at least try out a memory upgrade on one box and see the results. However, they want before and after metrics, so that they can see that the expense will be justified. My question is what metrics should I collect to see whether the performance truly improves on the box? I am a dev, so I am not sure how and what to collect (i have a passing knowledge of Perfmon).

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• IIS6.0 asking for credentials after MS Updates

  - by Adam M.

  We have an IIS6.0 Server running on a Windows 2003 Server. Last weekend it went though maintenance, and updated a quite a few Windows updates, it is now brought up to current updates (as of March 29th). Previous to these updates we could connect to the Web page via the hostname or via a alias (there is a DNS and a WINS alias (the alias is the same name in both) that are both pointing to the system). Now since the updates it asks for credentials to access the page, when trying to access the page via IP, or by name. If you use the alias it will go right into the page. I had added a new alias in DNS and tried to access it via this name with the same effect. So it appears that the WINS alias allows the page to show up properly. I have seen this KB but http://support.microsoft.com/kb/871179 though not sure if it really is relevant to this issue. As it does refer to the 3 strikes rules to display the 401.1 error. The IIS Application pool is running under a domain account. Teh default page is allowing Anonymous login under a local account. Any thoughts? Thanks Adam

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• make IIS 7.5 cache static content files over diferent pages

  - by Achilles

  On a Windows 2008 R2, using DNS and IIS I've established my development test server; i.e. I'll have a web application that I can browse on http://test.dev I've moved all the static content files like images, js files and css files into another application which is visible on http://cdn.test.dev test.dev, uses cdn.test.dev urls like http://cdn.test.dev/js/jquery.js to load js, css and images. When I first load "~/" of test.dev, all files will load with a response code of 200; when I press F5 in Firefox, all files, except the "~/default.aspx", will load with 304 response code; but pressing Ctrl+F5 loads them again with a 200 code; if I browse another url like "~/pages/" in test.dev, all of those static files will reload with a 200 code... Is this normal or I'm doing something wrong? Actually, I'm looking for a behavior like this: I want the client to load http://cdn.test.dev/js/jquery.js, only once. I want the client's browser to use this jquery.js file, from cache, in all other pages of test.dev Is this possible? This is the web.config file I have in the root directory of cdn.test.dev: <configuration> <system.webServer> <caching> <profiles> <add extension=".png" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".gif" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".jpg" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".js" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".css" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> <add extension=".axd" kernelCachePolicy="CacheUntilChange" varyByHeaders="User-Agent" location="Client" /> </profiles> </caching> <httpProtocol allowKeepAlive="true"> <customHeaders> <add name="Cache-Control" value="public, max-age=31536000" /> </customHeaders> </httpProtocol> <validation validateIntegratedModeConfiguration="false" /> <modules runAllManagedModulesForAllRequests="true"> <remove name="RadUploadModule" /> <remove name="RadCompression" /> <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode" /> <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode" /> </modules> <handlers> <remove name="ChartImage_axd" /> <remove name="Telerik_Web_UI_SpellCheckHandler_axd" /> <remove name="Telerik_Web_UI_DialogHandler_aspx" /> <remove name="Telerik_RadUploadProgressHandler_ashx" /> <remove name="Telerik_Web_UI_WebResource_axd" /> <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" /> <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" /> </handlers> <security> <requestFiltering> <requestLimits maxAllowedContentLength="10485760" /> </requestFiltering> </security> <staticContent> <clientCache cacheControlMode="UseExpires" httpExpires="Wed, 01 Jan 2020 00:00:00 GMT"/> </staticContent> </system.webServer> <appSettings /> <system.web> <compilation debug="false" targetFramework="4.0" /> <pages> <controls> <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" /> </controls> </pages> <httpHandlers> <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false" /> <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" /> <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" /> <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false" /> <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" /> </httpHandlers> <httpModules> <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" /> <add name="RadCompression" type="Telerik.Web.UI.RadCompression" /> </httpModules> <httpRuntime maxRequestLength="10240" /> </system.web> </configuration> and this is the resulting response header for http://cdn.test.dev/css/global.css: Cache-Control: private,public, max-age=31536000 Content-Type: text/css Content-Encoding: gzip Expires: Wed, 01 Jan 2020 00:00:00 GMT Last-Modified: Mon, 06 Sep 2010 08:53:06 GMT Accept-Ranges: bytes Etag: "0454eca04dcb1:0" Vary: Accept-Encoding Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Mon, 06 Sep 2010 14:57:08 GMT Content-Length: 4495

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• Ingress filtering in Linux traffic control: Redirect traffic to IFB device

  - by Dani Camps

  I have an openwrt router and I want to shape incoming traffic in order to classify all the traffic addressed to a certain IP address in my home network as low priority. For that purpose I want to redirect all traffic incoming to the eth1 interface, the one connected to the DSL modem, to an IFB device where I will do the shaping. These are the details of my system: Linux OpenWrt 2.6.32.27 #7 Fri Jul 15 02:43:34 CEST 2011 mips GNU/Linux Here is the script I am using where the last instruction is failing: # Variable definition ETH=eth1 IFB=ifb1 IP_LP="192.168.1.22/32" DL_RATE="900kbps" HP_RATE="890kbps" LP_RATE="10kbps" TC="tc" # Configuring the ifbX interface insmod ifb insmod sch_htb insmod sch_ingress ifconfig $IFB up # Adding the HTB scheduler to the ingress interface $TC qdisc add dev $IFB root handle 1: htb default 11 # Set the maximum bandwidth that each priority class can get, and the maximum borrowing they can do $TC class add dev $IFB parent 1:1 classid 1:10 htb rate $LP_RATE ceil $DL_RATE $TC class add dev $IFB parent 1:1 classid 1:11 htb rate $HP_RATE ceil $DL_RATE # Redirect all ingress traffic arriving at $ETH to $IFB $TC qdisc del dev $ETH ingress 2>/dev/null $TC qdisc add dev $ETH ingress $TC filter add dev $ETH parent ffff: protocol ip prio 1 u32 \ match u32 0 0 flowid 1:1 \ action mirred egress redirect dev $IFB The last instruction fails with: Action 4 device ifb1 ifindex 9 RTNETLINK answers: No such file or directory We have an error talking to the kernel Does anyone know what am I doing wrong ? Best Regards Daniel

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• DNAT to 127.0.0.1 with iptables / Destination access control for transparent SOCKS proxy

  - by cdauth

  I have a server running on my local network that acts as a router for the computers in my network. I want to achieve now that outgoing TCP requests to certain IP addresses are tunnelled through an SSH connection, without giving the people from my network the possibility to use that SSH tunnel to connect to arbitrary hosts. The approach I had in mind until now was to have an instance of redsocks listening on localhost and to redirect all outgoing requests to the IP addresses I want to divert to that redsocks instance. I added the following iptables rule: iptables -t nat -A PREROUTING -p tcp -d 1.2.3.4 -j DNAT --to-destination 127.0.0.1:12345 Apparently, the Linux kernel considers packets coming from a non-127.0.0.0/8 address to an 127.0.0.0/8 address as “Martian packets” and drops them. What worked, though, was to have redsocks listen on eth0 instead of lo and then have iptables DNAT the packets to the eth0 address instead (or using a REDIRECT rule). The problem about this is that then every computer on my network can use the redsocks instance to connect to every host on the internet, but I want to limit its usage to a certain set of IP addresses only. Is there any way to make iptables DNAT packets to 127.0.0.1? Otherwise, does anyone have an idea how I could achieve my goal without opening up the tunnel to everyone? Update: I have also tried to change the source of the packets, without any success: iptables -t nat -A POSTROUTING -p tcp -s 192.168.1.0/24 -d 1.2.3.4 -j SNAT --to-source 127.0.0.1 iptables -t nat -A POSTROUTING -p tcp -s 192.168.1.0/24 -d 127.0.0.1 -j SNAT --to-source 127.0.0.1

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• What's wrong with Lotus Notes / Lotus Domino?

  - by user20242

  I have a client who is using Lotus Domino for their web application/server platform. The client has two "web developers" who are more comfortable with Lotus Domino than more mainstream tools and technologies and are not enthusiastic about making a switch. I have been asked to provide an assessment of why it may be prudent to migrate to a different web application platform. I would be particularly interested in understanding deficiencies related to the platform as I have very little knowledge of Domino but am very familiar with other platforms. In addition to the fact that Apache has over 70% of web server market, IIS over 21%, and Lotus almost 0%, what other reasons would you give for moving away from this platform?

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• Using PAM and vsftpd without root access

  - by Zizzencs

  I'm trying to set up a few vsftpd instances on a machine that I have no root access to. The authentication should be done through PAM with pam_listfile, like this: pam_listfile.so item=group sense=allow file=/path/filename onerr=fail I can ask the administrator to set up a PAM service for me and include that line but he is not willing to create 6 PAM services for my 6 vsftpd instances and I really need different /path/filename set for each vsftpd server. Is there a way to solve this problem? Can I somehow not use absolute path as the parameter? (I know the correct solution would be to use one vsftpd instance and set up virtual users properly. However unfortunately I have to work what I have and the users already exist in an Active Directory and are authenticated to the system using another PAM service.)

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• Configure APE-Server on Ubuntu10.10 webserver

  - by sadmicrowave

  I'm having problems configuring my ape-server. First, I reside behind a corporate firewall where our own DNS servers are maintained. I requested a domain name for my server and was provided uslonsweb003.us.mycompany.com from my IT group. Therefore, my website works and can be accessed via (intranet only) at http://uslonsweb003.us.mycompany.com/test.php. I followed the instructions at ape-project.org and run the Check Tool at the end only to find I get an error stating: Running test : Contacting APE Server (adding frequency) Can't contact APE Server. Please check the folowing url is pointing to your APE server : http://0.uslonsweb003.us.mycompany.com:6969 my /etc/apache2/apache2.conf module looks as follows: <VirtualHost *:80> Servername uslonsweb003.us.mycompany.com ServerAlias ape.uslonsweb003.us.mycompany.com ServerAlias *.ape.uslonsweb003.us.mycompany.com DocumentRoot "/var/www/" </VirtualHost> my /var/www/ape-jsf/Demos/config.js config section looks as follows: APE.Config.baseUrl = 'http://uslonsweb003.us.mycompany.com/ape-jsf'; APE.Config.domain = 'uslonsweb003.us.mycompany.com'; APE.Config.server = 'uslonsweb003.us.mycompany.com:6969'; The instructions at ape-project.org tell me that the APE.Config.server should be `ape.mydomain.com:6969'; but that does not work (I'm assuming because my corporate DNS does not understand the 'ape' before the domain name since 'ape' was not registered with the IT DNS). So therefore, I changed it to what you see above. Please help!! Thanks in advance UPDATE 1 per the installation instructions located on this page http://www.ape-project.org/wiki/index.php/Advanced_APE_configuration under 'Configure your Server/Computer' (I'm running it on a server obviously) It says I need to add some lines to my DNS config file. It sounds like (since I'm within a corporate network) I would ask my IT group to add the following lines to the DNS configuration file on their end: ape IN A x.x.x.x ; IP address of my APE server *.ape IN CNAME ape I just want to make sure this is all I have to have them add (or if this is even correct) before I ask them.

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• ubuntu 9.04 pptp broken after a power failure

  - by kevin42

  I have a small Ubuntu 9.04 router setup as a NAT box and a PPTP server. After a power failure everything except the PPTP server still works. A windows client gets to "registering your computer on the network" but then says Error 742: The remote computer does not support the required data encryption type. I did some research and I think the problem is with the ppp_mppe module. When I try to run 'modprobe ppp_mppe' it hangs indefinitely. What would cause this hang? Any ideas how I can troubleshoot this further? Thanks for the help! UPDATE: I am still having the problem, however I have found some more information. When the first user tries to connect to pptp, the process list shows modprobe sha1 running, and one instance of modprobe ppp_mppe for each connection attempt. If I killall modprobe at this point the next connection attempt works, and everything is fine until the next reboot. I'm planning to do a clean install at some point in the future but I'd really like to get to the real cause of this.

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• Remote Desktop, Host: 2008, Client: Windows 7, The remote computer requires Network Level Authentica

  - by deerchao

  Hi, today I accidently changed one option of Teminal Services, I checked "Allow connections only from computers running Remote Desktop with Network Level Authentication". After that, I can't connect to my server any more. The error says: The remote computer requires Network Level Authentication, which your computer does not support. But my client pcs(both home and at office) are running Windows 7, as far as I know, it shoud support NLA; And in About dialog of Remote Desktop Connection there says "Supports Network Level Authentication". My server is running Windows Server 2008, placed in IDC center; I could connect to it before I change the settings. All other sevices(like IIS, SQL Server) are running normally. For clients, I tried two PCs running Windows 7, and two virtual windows XP machine running in Virtual PC and Virtual Box, all of them gives the same error message. Is there a way I can make things right without go to IDC which is far away? Thanks.

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• Proxy arp and 1:1 NAT

  - by daniel4er

  I have a Linux router with 2 NICs doing masquerade from network 192.168.0.0/24 to an ADSL router. users <----> NIC A [router] NIC B <----> INTERNET Now I'm experimenting with proxy arp on the NIC A to intercept all the IP requests in the network. I have a pool of addresses in the 192.168.0.0/24 network for this users. How can I translate, saythe IP10.0.0.64to192.168.0.64` in order to grant it internet access? I have already tried SNAT - DNAT, even I have written a NFQUEUE app to spoof the IP address with no luck.

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• Apache configuration to make NTLM authentication work through a Proxy

  - by Nick Pierpoint

  I'm running an application server behind an Apache proxy with the following sort of thing in my Apache config: ProxyPass /app http://myapplication:8080/myapp ProxyPassReverse /app http://myapplication:8080/myapp When I switch on NTLM authentication (using mod_ntlm) the authentication fails (it works fine when bypassing the proxy). A quick search reveals lots of issues when running NTLM behind a proxy due to the connection-specific NTLM specification. Does anyone have a working Apache configuration that allows NTLM authentication through a proxy? Thanks for any help.

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• DCOM configuration: accounts with same name but different passwords problem

  - by archimed7592

  Hello, everybody! I'm experiencing troubles with DCOM configuration. Here is the case: I'm using some product which supports client-server interaction through DCOM, but the client won't get any access to the server if the attempt is being done from an account with a name which exists at the server as well, but has different password. Basically, if we try to access the server from the Administrator account which obviously present on the server machine, we will fail if client's Administrator password doesn't match server's one. After actively collaborating with the product's developer in attempts to localize the issue, he come across with resolution "can't be fixed" or, if you prefer to call a pikestaff a pikestaff than it's more likely a "don't know how to fix" resolution :). I believe there is a solution for this problem and I'm asking you, IT professionals, to help me out with this one. I do realize that the problem may be caused by the way the developer interact with DCOM and if so it can't be fixed be means of pure system configuration and the question should be asked at SO, but since I've bumped into the same behavior while working with file/printer sharing - Windows tried to simplify everything and used currently impersonated credentials to access the share, I hope the solution lies at system configuration layer. P.S. I believe that the actual software product I'm talking about is entirely irrelevant however my experience tell me that there always would be somebody who will think that it on the contrary is very relevant. Here it is: SpRecord.

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• aliasing "git" ssh login to "gitolite"

  - by Randal Schwartz

  I'm installing gitolite from CentOS packages for my client. The package creates a gitolite user, which will be visible explicitly during a "git clone" operations. The client wants to use "git" and not "gitolite", in case we change to something more fancy later. I'm not very familiar with CentOS, so I don't want to try to build the package myself from source. I'm wondering if there's a way to do one of the following: Trick sshd into treating "git" as "gitolite". Somehow "alias" a new git username to be the same in all ways as the existing gitolite username (perhaps through some complex combinations of useradd). Rename the "gitolite" username to "git" without upsetting later yum update operations Something else that I hadn't thought of I'd appreciate detailed instructions or pointers.

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• Cisco ASA (Client VPN) to LAN - through second VPN to second LAN

  - by user50855

  We have 2 site that is linked by an IPSEC VPN to remote Cisco ASAs: Site 1 1.5Mb T1 Connection Cisco(1) 2841 Site 2 1.5Mb T1 Connection Cisco 2841 In addition: Site 1 has a 2nd WAN 3Mb bonded T1 Connection Cisco 5510 that connects to same LAN as Cisco(1) 2841. Basically, Remote Access (VPN) users connecting through Cisco ASA 5510 needs access to a service at the end of Site 2. This is due to the way the service is sold - Cisco 2841 routers are not under our management and it is setup to allow connection from local LAN VLAN 1 IP address 10.20.0.0/24. My idea is to have all traffic from Remote Users through Cisco ASA destined for Site 2 to go via the VPN between Site 1 and Site 2. The end result being all traffic that hits Site 2 has come via Site 1. I'm struggling to find a great deal of information on how this is setup. So, firstly, can anyone confirm that what I'm trying to achieve is possible? Secondly, can anyone help me to correct the configuration bellow or point me in the direction of an example of such a configuration? Many Thanks. interface Ethernet0/0 nameif outside security-level 0 ip address 7.7.7.19 255.255.255.240 interface Ethernet0/1 nameif inside security-level 100 ip address 10.20.0.249 255.255.255.0 object-group network group-inside-vpnclient description All inside networks accessible to vpn clients network-object 10.20.0.0 255.255.255.0 network-object 10.20.1.0 255.255.255.0 object-group network group-adp-network description ADP IP Address or network accessible to vpn clients network-object 207.207.207.173 255.255.255.255 access-list outside_access_in extended permit icmp any any echo-reply access-list outside_access_in extended permit icmp any any source-quench access-list outside_access_in extended permit icmp any any unreachable access-list outside_access_in extended permit icmp any any time-exceeded access-list outside_access_in extended permit tcp any host 7.7.7.20 eq smtp access-list outside_access_in extended permit tcp any host 7.7.7.20 eq https access-list outside_access_in extended permit tcp any host 7.7.7.20 eq pop3 access-list outside_access_in extended permit tcp any host 7.7.7.20 eq www access-list outside_access_in extended permit tcp any host 7.7.7.21 eq www access-list outside_access_in extended permit tcp any host 7.7.7.21 eq https access-list outside_access_in extended permit tcp any host 7.7.7.21 eq 5721 access-list acl-vpnclient extended permit ip object-group group-inside-vpnclient any access-list acl-vpnclient extended permit ip object-group group-inside-vpnclient object-group group-adp-network access-list acl-vpnclient extended permit ip object-group group-adp-network object-group group-inside-vpnclient access-list PinesFLVPNTunnel_splitTunnelAcl standard permit 10.20.0.0 255.255.255.0 access-list inside_nat0_outbound_1 extended permit ip 10.20.0.0 255.255.255.0 10.20.1.0 255.255.255.0 access-list inside_nat0_outbound_1 extended permit ip 10.20.0.0 255.255.255.0 host 207.207.207.173 access-list inside_nat0_outbound_1 extended permit ip 10.20.1.0 255.255.255.0 host 207.207.207.173 ip local pool VPNPool 10.20.1.100-10.20.1.200 mask 255.255.255.0 route outside 0.0.0.0 0.0.0.0 7.7.7.17 1 route inside 207.207.207.173 255.255.255.255 10.20.0.3 1 crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac crypto ipsec security-association lifetime seconds 28800 crypto ipsec security-association lifetime kilobytes 4608000 crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA crypto dynamic-map outside_dyn_map 20 set security-association lifetime seconds 288000 crypto dynamic-map outside_dyn_map 20 set security-association lifetime kilobytes 4608000 crypto dynamic-map outside_dyn_map 20 set reverse-route crypto map outside_map 20 ipsec-isakmp dynamic outside_dyn_map crypto map outside_map interface outside crypto map outside_dyn_map 20 match address acl-vpnclient crypto map outside_dyn_map 20 set security-association lifetime seconds 28800 crypto map outside_dyn_map 20 set security-association lifetime kilobytes 4608000 crypto isakmp identity address crypto isakmp enable outside crypto isakmp policy 20 authentication pre-share encryption 3des hash sha group 2 lifetime 86400 group-policy YeahRightflVPNTunnel internal group-policy YeahRightflVPNTunnel attributes wins-server value 10.20.0.9 dns-server value 10.20.0.9 vpn-tunnel-protocol IPSec password-storage disable pfs disable split-tunnel-policy tunnelspecified split-tunnel-network-list value acl-vpnclient default-domain value YeahRight.com group-policy YeahRightFLVPNTunnel internal group-policy YeahRightFLVPNTunnel attributes wins-server value 10.20.0.9 dns-server value 10.20.0.9 10.20.0.7 vpn-tunnel-protocol IPSec split-tunnel-policy tunnelspecified split-tunnel-network-list value YeahRightFLVPNTunnel_splitTunnelAcl default-domain value yeahright.com tunnel-group YeahRightFLVPN type remote-access tunnel-group YeahRightFLVPN general-attributes address-pool VPNPool tunnel-group YeahRightFLVPNTunnel type remote-access tunnel-group YeahRightFLVPNTunnel general-attributes address-pool VPNPool authentication-server-group WinRadius default-group-policy YeahRightFLVPNTunnel tunnel-group YeahRightFLVPNTunnel ipsec-attributes pre-shared-key *

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• ESXi 4.0 - cannot copy files

  - by Peter

  I am unable to copy files or make directories on my installation of VMWare ESXi 4.0. I have done so in the past (copied an iso onto a datastore). But something has changed and I have no idea what. I cannot copy using the datastore browser (get a dialog saying "Expected a PUT_FILE_DONE message. Got SESSION_COMPLETE"). I cannot create a directory through datastore browser (get a dialog saying "Cannot complete file creation operation"). When I ssh to the ESXi server I cannot create files or folders under /vmfs/volumes. But I can manipulate files elswhere (including /vmfs). Here are the permissions for the directories (I am logged in as root). ~ # ls -lh /vmfs/volumes/ drwxr-xr-t 1 root root 1.2k Sep 3 12:19 4a76f260-36b7eb85-c3b3-0024e8314929 drwxr-xr-x 1 root root 8 Jan 1 1970 4a76f261-d6190a9e-3b89-0024e8314929 drwxr-xr-t 1 root root 1.4k Sep 22 10:38 4a76f262-4ac21f0a-6bc1-0024e8314929 l--------- 0 root root 1.9k Jan 1 1970 Hypervisor1 - c42ce27f-eb8d7f70-7f70-0e7a85e8edc4 l--------- 0 root root 1.9k Jan 1 1970 Hypervisor2 - bbf1477b-4aec1d8c-caa5-5e8720bebd85 l--------- 0 root root 1.9k Jan 1 1970 Hypervisor3 - efd8efe3-03bc1cbf-15e0-080efd9e7379 drwxr-xr-x 1 root root 8 Jan 1 1970 bbf1477b-4aec1d8c-caa5-5e8720bebd85 drwxr-xr-x 1 root root 8 Jan 1 1970 c42ce27f-eb8d7f70-7f70-0e7a85e8edc4 l--------- 0 root root 1.9k Jan 1 1970 datastore1 - 4a76f260-36b7eb85-c3b3-0024e8314929 l--------- 0 root root 1.9k Jan 1 1970 datastore2 - 4a76f262-4ac21f0a-6bc1-0024e8314929 drwxr-xr-x 1 root root 8 Jan 1 1970 efd8efe3-03bc1cbf-15e0-080efd9e7379 ~ # touch /vmfs/foo.txt ~ # touch /vmfs/volumes/foo.txt touch: /vmfs/volumes/foo.txt: Operation not permitted I've googled and found nothing helpful. Does anyone out there have an idea as to what is going on? Thanks in Advance. Pete.

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