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• .NET framework execution aborted while executing CLR stored procedure?

  - by Sean Ochoa

  I constructed a stored procedure that does the equivalent of FOR XML AUTO in SQL Server 2008. Now that I'm testing it, it gives me a really unhelpful error message. What does this error mean? Msg 10329, Level 16, State 49, Procedure ForXML, Line 0 .NET Framework execution was aborted. System.Threading.ThreadAbortException: Thread was being aborted. System.Threading.ThreadAbortException: at System.Runtime.InteropServices.Marshal.PtrToStringUni(IntPtr ptr, Int32 len) at System.Data.SqlServer.Internal.CXVariantBase.WSTRToString() at System.Data.SqlServer.Internal.SqlWSTRLimitedBuffer.GetString(SmiEventSink sink) at System.Data.SqlServer.Internal.RowData.GetString(SmiEventSink sink, Int32 i) at Microsoft.SqlServer.Server.ValueUtilsSmi.GetValue(SmiEventSink_Default sink, ITypedGettersV3 getters, Int32 ordinal, SmiMetaData metaData, SmiContext context) at Microsoft.SqlServer.Server.ValueUtilsSmi.GetValue200(SmiEventSink_Default sink, SmiTypedGetterSetter getters, Int32 ordinal, SmiMetaData metaData, SmiContext context) at System.Data.SqlClient.SqlDataReaderSmi.GetValue(Int32 ordinal) at System.Data.SqlClient.SqlDataReaderSmi.GetValues(Object[] values) at System.Data.ProviderBase.DataReaderContainer.CommonLanguageSubsetDataReader.GetValues(Object[] values) at System.Data.ProviderBase.SchemaMapping.LoadDataRow() at System.Data.Common.DataAdapter.FillLoadDataRow(SchemaMapping mapping) at System.Data.Common.DataAdapter.FillFromReader(DataSet dataset, DataTable datatable, String srcTable, DataReaderContainer dataReader, Int32 startRecord, Int32 maxRecords, DataColumn parentChapterColumn, Object parentChapterValue) at System.Data.Common.DataAdapter.Fill(DataTable[] dataTables, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior) at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable) at ForXML.GetXML...

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• What's an effective way to move data from one open browser tab to another?

  - by slk

  I am looking for a quick way to grab some data off of one Web page and throw it into another. I don't have access to the query string in the URL of the second page, so passing the data that way is not an option. Right now, I am using a Greasemonkey user script in tandem with a JS bookmarklet trigger: javascript:doIt(); // ==UserScript== // @include public_site // @include internal_site // ==/UserScript== if (document.location.host.match(internal_site)) { var datum1 = GM_getValue("d1"); var datum2 = GM_getValue("d2"); } unsafeWindow.doIt = function() { if(document.location.host.match(public_site)) { var d1 = innerHTML of page element 1; var d2 = innerHTML of page element 2; //Next two lines use setTimeout to bypass GM_setValue restriction window.setTimeout(function() {GM_setValue("d1", d1);}, 0); window.setTimeout(function() {GM_setValue("d2", d2);}, 0); } else if(document.location.host.match(internal_site)) { document.getElementById("field1").value = datum1; document.getElementById("field2").value = datum2; } } While I am open to another method, I would prefer to stay with this basic model if possible, as this is just a small fraction of the code in doIt() which is used on several other pages, mostly to automate date-based form fills; people really like their "magic button." The above code works, but there's an interruption to the workflow: In order for the user to know which page on the public site to grab data from, the internal page has to be opened first. Then, once the GM cookie is set from the public page, the internal page has to be reloaded to get the proper information into the internal page variables. I'm wondering if there's any way to GM_getValue() at bookmarklet-clicktime to prevent the need for a refresh. Thanks!

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• How to track a projects extraneous quirks

  - by Steerpike

  Hello, It's possible that the answer to this question may just be standard bug tracking software like jira or fogbugz, but I'm kind of hoping someone out there knows a better system for what I'm describing. My most current project is requiring a lot of setup quirkiness to get into a position where I can actually start a coding section. For example: A series of convoluted internal company commands before I can insitgate an SSH. Making sure any third party classes that make external calls have internal company proxy options setup - while also making sure these setting wont be set up when installed on a production environment Making sure the proxy is set before trying to install pear packages. Other similar things, mostly involving internal IT security and getting it to work with modules and packages. Individually none of these things is a huge deal, and I've written extensive notes to myself regarding exact commands and aditions I've made, but they're currently in a general text document and it's going to be hard to remember exactly where what I need is far down the line. We also have several new staff starting soon and I' rather give them an easier time of setting up their programming environments. Like I said, they aren't 'programming quirks' exactly, but just the constant fiddling that comes about before programming starts in earnest. Any thoughts on the best way to documents these things for my own and future generations sanity?

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• How to use git to manage one codebase but have different environments

  - by emostar

  I'm using git for a personal project at the moment and have run into a problem of having one codebase for two different environments and was wondering what the cleanest way to use git would be. Main Desktop I Use this machine for most of my development. I have a git repository here that I cloned off of an empty repository that I use on my internal server. I do most of my work here and push back to the internal server so I can use that as a master of truth and to ease making backups. Laptop I sometimes want to code on the road, so I did a clone from the internal server and created a new branch called "laptop-branch". Unfortunately some directories MSVC++ version are different than from the Main Desktop environment. I just modified the files in the "laptop-branch" and committed them there. Now I did a lot of changes while on vacation with my laptop, and want to push them to origin, but don't want the changes I made that were related to directories and compiler versions to be pushed back to origin. What would be the best way to get this done?

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• Is there such a thing as a MemberExpression that handles a many-to-many relationship?

  - by Jaxidian

  We're trying to make it easy to write strongly-typed code in all areas of our system, so rather than setting var sortColumn = "FirstName" we'd like to say sortOption = (p => p.FirstName). This works great if the sortOption is of type Expression<Func<Person, object>> (we actually use generics in our code but that doesn't matter). However, we run into problems for many-to-many relationships because this notation breaks down. Consider this simple code: internal class Business { public IQueryable<Address> Addresses { get; set; } public string Name { get; set; } } internal class Address { public State MyState { get; set; } } internal class State { public string Abbreviation { get; set; } public int StateID { get; set; } } Is it possible to have this sort of MemberExpression to identify the StateID column off of a business? Again, the purpose of using this is not to return a StateID object, it's to just identify that property off of that entity (for sorting, filtering, and other purposes). It SEEMS to me that there should be some way to do this, even if it's not quite as pretty as foo = business.Addresses.SomeExtension(a => a.State.StateID);. Is this really possible? If more background is needed, take a look at this old question of mine. We've since updated the code significantly, but this should give you the general detailed idea of the context behind this question.

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• how do I resolve "user isn't assigned to any management roles" error in Exchange 2010 EMC?

  - by TheoJones

  Newly installed Exchange 2010 box (technically, a partially installed box, as this error is preventing me from completing the install). When I launch EMC or the Management Powershell, I get this error: VERBOSE: Connecting to myserver.mydomain.internal [myserver.mydomain.internal] Processing data from remote server failed with the following error message: The user "mydomain\administrator" isn't assigned to any management roles. For more information, see the about_Remote_Troubleshooting Help topic. Failed to connect to any Exchange Server in the current site. Thing is.. The logged in administrator account (confirmed using 'whoami') is a member of the following groups: Administrators Delegated Setup Discovery Management Domain Admins Domain Users Enterprise Admins Exchange Organization Administrators GPO Creator Owners Organization Management Schema Admins Server Management Any ideas? how can I get past this?

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• UNC Paths in Google Chrome

  - by Daemonic

  We have an internal wiki setup and do a lot of linking to files on internal shares. We typically use this format (where Share is the name of the server): <a href="file:///\\share\blah\blah\file.txt"> This works in FireFox (after modifying the userpref.js) and IE. We've now had a bit of an adoption of Google Chrome. These links do not appear to work in Chrome. I've been unable to find anything about it on the net so far. :/ This is served up on an IIS box (7.0, https). It seems to be that Chrome has some protection like FireFox does and prevents file links from being loaded from a webpage. Does anyone know of any workarounds?

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• How to remap "Dashboard" key to show the Desktop on OSX [Snow] Leopard?

  - by Mike

  I use my Desktop far more often than I use my Dashboard. However, my MacBook Pro comes with a dedicated key for Dashboard but it doesn't come with one for Desktop. Using this article, I was able to remap my Dashboard key to show the desktop by changing the values for keys 62 and 63 ("Dashboard") to the same values used by keys 36 and 37 ("Show Desktop"). Specifically, I changed the value for both array index #1s to 111. This worked great for my external (kinesis freestyle) keyboard. But when I went back to my internal macbook keyboard, I discovered that the Dashboard key still mapped to the Dashboard rather than the Desktop. How can I complete this mapping for all of my keyboards? The Kinesis Freestyle, my internal MacBook Pro keyboard, and my external Apple Aluminum Bluetooth keyboard? Update: I'm definitely not looking for a solution that involves using the Function keys instead of the special keys. I wish to keep using my Function keys as function keys as they're indispensable for other applications.

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• Why does OS X insist on spinning up all external drives when loading a file from the local drive?

  - by Phillip Oldham

  Why does OS X insist on spinning up all the attached external drives (firewire, usb) when loading a file from the local (internal) drive? It's driving me insane that I have to wait for 3 attached drives (1 back-up, 2 media) to spin up -- a total of 20s -- to access a file that is located only on my local/internal drive. There is no obvious need to access the other drives; nothing is being read from them and nothing need be written. Examples: Quicktime X opening a file from the local HDD. Starting Caffeine, an app which doesn't access any other files at all. Can I tell OS X to only spin those drives up when actually accessing them?

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• Hyper-V + RRAS NAT + Port Forwarding + RDP, can I get it all working together?

  - by Tom Bull

  I am running a Windows 2008 R2 server with various services running natively and two virtualised servers running on Hyper-V. The hardware server, I'm going to call it REAL1, has one external NIC, to which I can assign any of the following IP addresses: 1.2.3.4, 1.2.3.5, 1.2.3.6, etc... I need to achieve the following: I would like to be able to connect to REAL1 via remote desktop (RDP / port 3389) on one IP address (say 1.2.3.4), but also to the virtualised servers (I'm going to call them VIRTUAL1 and VIRTUAL2) on the other available IP addresses (say 1.2.3.5 and 1.2.3.6). The easiest way of doing this is to connect the virtual servers directly to the external interface and assign them each their own IP address. REAL1 will have 1.2.3.4, VIRTUAL1 will have 1.2.3.5 and VIRTUAL2 will have 1.2.3.6. Unfortunately, although I don't directly manage the two virtual servers, I have responsibility for their security. I would like to have some kind of firewall between the virtual servers an the internet. I have tried running a virtual machine firewall, but have found the performance on Hyper-V pretty terrible. The alternative I am now trying is Routing and Remote Access (RRAS): I have set up a virtual network called 'Internal' and REAL1 has a virtual network adapter connected to this virtual network I have connected each of the virtual servers to this network too I have assigned each server static IP addresses on this virtual network (REAL1 has 10.1.1.1, VIRTUAL1 has 10.1.1.2 and VIRTUAL2 has 10.1.1.3) I have installed RRAS and set up a NAT. The external interface is the external NIC, the internal interface is the virtual NIC connected to the internal network I have assigned all the available external IP addresses to the external NIC on REAL1. The virtual servers have been set up appropriately such that their default gateway is pointing to 10.1.1.1 and they can both access externally. Success! The RRAS is routing packets. The problem I have is that when I try to port forward services from the external IP address on REAL1, it only works if there is not already a service bound to the port. Remote desktop 'greedily' binds to every available IP address on port 3389 on REAL1 so I can't selectively forward incoming traffic for 1.2.3.5:3389 to 10.1.1.2:3389. RRAS will allow me to set up this port forwarding, and no errors come up. It just doesn't work. So the question I have is: Is there a better way of doing this? Or at least is there a way of resolving the apparant conflict between RRAS and everything else on the physical server?

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• asterisk/freeswitch in nat/no-nat setup

  - by pQd

  hi, my current setup - i use bunch of sip hard-phones around few offices. all devices have two sip accounts configured - one on internal sip proxy [for calls between the branches], another - at 3rd party voip providers [ since it's in different countries - those are different providers, but that's irrelevant ]. i was thinking about terminating sip calls on something like asterisk/freeswitch server and having all sip-devices log on just once to such server[s] - mostly to provide things like voicemail, groupcalls, redirections etc. it seems perfectly doable but there is one problem - i cannot find examples how to prepare for nat/no nat. for calls routed to from/to 3rd party voip operator - i'll need handling for nat/stun etc, but for handling of internal calls - i do not want any nat, all traffic should go via vpns to different branches. can you provide me some hints how to configure it? any tutorials? thanks!

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• Dell OpenManage Causing Periodic Slowness

  - by Zorlack

  Today we diagnosed the cause of a Periodic slowness issue: see here. Dell OpenManage Server Administrator seems to have been causing hourly slowness. It would occasionally peg one of the CPUs for upwards of two minutes. Disabling it drastically improved the performance of the SQL Server. The server hardware: Dell R710 Dual Quad Core 2.9GHz Processors 96GB Memory 2 Disk RAID 1 SAS System Disk (Internal) 4 Disk RAID 10 SAS Log Disk (Internal) 14 Disk RAID 10 SAS Data Disk (External DAS MD1000) Windows 2008 Enterprise R2 x64 We installed the OS using Dell OpenManage Server Assistant, so I assume that it was correctly configured. For now we have disabled OMSA to alleviate the performance issues it was causing, but I'd like to be able to re-enable it. Has anyone had a similar experience that can shed a little light on the nature of this problem?

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• SMTP server on Win2008, SPF ecc

  - by Ronnie

  I want be able to send outgoing email from my website. I want to setup Win2008 smtp to be able to send them respecting all the spam rules. My checklist is: the smtp should be able to accept outgoing email only from internal sites: I will limit it to relay only 127.0.0.1 is this correct? it should have set SPF, DKIM and all the policy avaiable to not be marked as spam: how you would configure it for the internal SMTP? Should I use another kind of server like hMail server? I should be able to send like 30 email from each user session on the website without obliging the user to wait that the email is effectivly sent (I thought to save it on a folder and then use a batch to send them asynchronously). What are my options? What other steps would you add to be sure that the outgoing email is not marked as spam?

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• tproxy squid bridge very slow when cache is full

  - by Roberto

  I have installed a bridge tproxy proxy in a fast server with 8GB ram. The traffic is around 60Mb/s. When I start for first time the proxy (with the cache empty) the proxy works very well but when the cache becomes full (few hours later) the bridge goes very slow, the traffic goes below 10Mb/s and the proxy server becomes unusable. Any hints of what may be happening? I'm using: linux-2.6.30.10 iptables-1.4.3.2 squid-3.1.1 compiled with these options: ./configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --localstatedir=/var/lib --sysconfdir=/etc/squid --libexecdir=/usr/libexec/squid --localstatedir=/var --datadir=/usr/share/squid --enable-removal-policies=lru,heap --enable-icmp --disable-ident-lookups --enable-cache-digests --enable-delay-pools --enable-arp-acl --with-pthreads --with-large-files --enable-htcp --enable-carp --enable-follow-x-forwarded-for --enable-snmp --enable-ssl --enable-async-io=32 --enable-linux-netfilter --enable-epoll --disable-poll --with-maxfd=16384 --enable-err-languages=Spanish --enable-default-err-language=Spanish My squid.conf: cache_mem 100 MB memory_pools off acl manager proto cache_object acl localhost src 127.0.0.1/32 acl localhost src ::1/128 acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 acl to_localhost dst ::1/128 acl localnet src 10.0.0.0/8 # RFC1918 possible internal network acl localnet src 172.16.0.0/12 # RFC1918 possible internal network acl localnet src 192.168.0.0/16 # RFC1918 possible internal network acl localnet src fc00::/7 # RFC 4193 local private network range acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines acl net-g1 src xxx.xxx.xxx.xxx/24 acl SSL_ports port 443 acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 70 # gopher acl Safe_ports port 210 # wais acl Safe_ports port 1025-65535 # unregistered ports acl Safe_ports port 280 # http-mgmt acl Safe_ports port 488 # gss-http acl Safe_ports port 591 # filemaker acl Safe_ports port 777 # multiling http acl CONNECT method CONNECT http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow net-g1 from where browsing should be allowed http_access allow localnet http_access allow localhost http_access deny all http_port 3128 http_port 3129 tproxy hierarchy_stoplist cgi-bin ? cache_dir ufs /var/spool/squid 8000 16 256 access_log none cache_log /var/log/squid/cache.log coredump_dir /var/spool/squid refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 refresh_pattern . I have this issue when the cache is full, but do not really know if it is because of that. Thanks in advance and sorry my english. roberto

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• Stop Zabbix notification for nodes under zabbix-proxy when proxy service is down

  - by A_01

  I have a zabbix-proxy and 12 nodes in that proxy. Right now whenever proxy service goes down. It send out of reach mail for all the 12 nodes. I want to send mail only for the zabbix proxy not for the nodes under that proxy Updated: Now I am trying to have a single trigger in which I want to check both the conditions like 1-check zabbix-host is not accessble from past x minutes. 2-check the host is not giving any data to the proxy(Host is down). Not the trigger should start shouting onle when we have condition in which proxy is running and node is down. I tried the below but its not working for me. Can some please help me out in this ({ip-10-4-1-17.ec2.internal:agent.ping.nodata(2m)}=1) & ({ip-10-4-1- 17.ec2.internal:zabbix[proxy,zabbixproxy.dev-test.com,lastaccess].fu??zzytime(120)}=1)

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• Apache and mod_authn_dbd DBDPrepareSQL error

  - by David Brown

  I am running Apache 2.2.17 on Suse Linux 11. I have installed the mod_authn_dbd module to allow authentication using a MySQL database. Simple digest authentication works absolutely fine using the following directive: AuthDBDUserRealmQuery "SELECT loginPassword FROM login WHERE loginUser = %s and loginRealm = %s" However, I would like to both generalize this statement and prepare it for performance and security reasons. Thus, I used the following directives instead: DBDPrepareSQL "SELECT loginPassword FROM login WHERE loginUser = %s and loginRealm = %s" digestLogin AuthDBDUserRealmQuery digestLogin These directives generate the following errors: [...] [error] (20014)Internal error: DBD: failed to prepare SQL statements: [...] [error] (20014)Internal error: DBD: failed to initialise Why does my actual SQL statement work when used directly, but not when I try to prepare it? (Note I have tried using '?' and '%%' in place of '%', to no effect.)

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• Can't get Passwordless (SSH provided) SFTP working

  - by Shoaibi

  I have chrooted sftp setup as below. # Package generated configuration file # See the sshd_config(5) manpage for details # What ports, IPs and protocols we listen for Port 22 # Use these options to restrict which interfaces/protocols sshd will bind to #ListenAddress :: #ListenAddress 0.0.0.0 Protocol 2 # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key #Privilege Separation is turned on for security UsePrivilegeSeparation yes # Lifetime and size of ephemeral version 1 server key KeyRegenerationInterval 3600 ServerKeyBits 768 # Logging SyslogFacility AUTH LogLevel INFO # Authentication: LoginGraceTime 120 PermitRootLogin without-password StrictModes yes AllowGroups admins clients RSAAuthentication yes PubkeyAuthentication yes #AuthorizedKeysFile %h/.ssh/authorized_keys # Don't read the user's ~/.rhosts and ~/.shosts files IgnoreRhosts yes # For this to work you will also need host keys in /etc/ssh_known_hosts RhostsRSAAuthentication no # similar for protocol version 2 HostbasedAuthentication no # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication #IgnoreUserKnownHosts yes # To enable empty passwords, change to yes (NOT RECOMMENDED) PermitEmptyPasswords no # Change to yes to enable challenge-response passwords (beware issues with # some PAM modules and threads) ChallengeResponseAuthentication no # Change to no to disable tunnelled clear text passwords #PasswordAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosGetAFSToken no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes #UseLogin no #MaxStartups 10:30:60 #Banner /etc/issue.net # Allow client to pass locale environment variables AcceptEnv LANG LC_* #Subsystem sftp /usr/lib/openssh/sftp-server # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. UsePAM yes Subsystem sftp internal-sftp Match group clients ChrootDirectory /var/chroot-home X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp a dummy user root:~# tail -n1 /etc/passwd david:x:1000:1001::/david:/bin/sh Now in this case david can sftp using say filezilla client and he is chrooted to /var/chroot-home/david/. But what if i was to setup a passwordless auth? I have tried pasting his key in /var/chroot-home/david/.ssh/authorized_keys but no use, tried ssh'ing as david to the box and it just stops at "debug1: Sending env LC_CTYPE = C" after i supply it password and there is nothing shown in auth.log, may be because it can't find the homedir. If i do "su - david" as root i see "No directory, logging in with HOME=/" which makes sense. Symlink doesn't help either. I have also tried with: Match group clients ChrootDirectory /var/chroot-home/%u X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp a dummy user root:~# tail -n1 /etc/passwd david:x:1000:1001::/var/chroot-home/david:/bin/sh This way if i don't change /var/chroot-home/david to root:root sshd complains about bad ownership or permission modes, and if i do, david can no longer upload/delete anything directly in his home while using sftp from filezilla.

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• Rename url hiding file extension

  - by Anusri Roy Chowdhury

  I want to show url http://some.com/designit/portfolio.php?cat=website&subcat=nature as http://some.com/designit/portfolio/website/nature. cat may pe presentor may not.also subcat may present or not I have put .htaccess file in designit folder and code in it is as follows: RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ $1.php [L,QSA] RewriteRule ^portfolio/?$ portfolio.php[NC,QSA] RewriteRule ^portfolio/([a-zA-Z0-9_-]+)/?$ portfolio.php?cat=$1[L,NC,QSA] it is showing ..some.com/designit/portfolio.php as ..some.com/designit/portfolio but it is not showing ..some.com/designit/portfolio.php?cat=website as ..some.com/designit/portfolio/website.Showing error "Internal Server Error.The server encountered an internal error or misconfiguration and was unable to complete your request." please help me to complete this code.

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• Gotchas for reverse proxy setups

  - by kojiro

  We run multiple web applications, some internal-only, some internal/external. I'm putting together a proposal that we use reverse proxy servers to isolate the origin servers, provide SSL termination and (when possible) provide load balancing. For much of our setup, I'm sure it will work nicely, but we do have a few lesser-known proprietary applications that may need special treatment when we move forward with reverse-proxying. What kinds of traps tend to cause problems when moving an origin server from being on the front lines to being behind a proxy? (For example, I can imagine problems if an application needed to know the IP address of incoming requests.)

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• Forwarding udp ports iptables packets "lost"?

  - by Dindihi

  I have a Linux router (Debian 6.x) where i forward some ports to internal services. Some tcp ports (like 80, 22...) are OK. I have one Application listening on port 54277udp. No return is coming from this app, i only get Data on this port. Router: cat /proc/sys/net/ipv4/conf/all/rp_filter = 1 cat /proc/sys/net/ipv4/conf/eth0/forwarding = 1 cat /proc/sys/net/ipv4/conf/ppp0/forwarding = 1 $IPTABLES -t nat -I PREROUTING -p udp -i ppp0 --dport 54277 -j DNAT --to-destination $SRV_IP:54277 $IPTABLES -I FORWARD -p udp -d $SRV_IP --dport 54277 -j ACCEPT Also MASQUERADING internal traffic to ppp0(internet) is active & working. Default Policy INPUT&OUTPUT&FORWARD is DROP What is strange, when i do: tcpdump -p -vvvv -i ppp0 port 54277 I get a lot of traffic: 18:35:43.646133 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP (17), length 57) source.ip > own.external.ip..54277: [udp sum ok] UDP, length 29 18:35:43.652301 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP (17), length 57) source.ip > own.external.ip..54277: [udp sum ok] UDP, length 29 18:35:43.653324 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP (17), length 57) source.ip > own.external.ip..54277: [udp sum ok] UDP, length 29 18:35:43.655795 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP (17), length 57) source.ip > own.external.ip..54277: [udp sum ok] UDP, length 29 18:35:43.656727 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP (17), length 57) source.ip > own.external.ip..54277: [udp sum ok] UDP, length 29 18:35:43.659719 IP (tos 0x0, ttl 57, id 0, offset 0, flags [DF], proto UDP (17), length 57) source.ip > own.external.ip..54277: [udp sum ok] UDP, length 29 tcpdump -p -i eth0 port 54277 (on the same machine, the router) i get much less traffic. also on the destination $SRV_IP there are only a few packets coming in, but not all. INTERNAL SERVER: 19:15:30.039663 IP source.ip.52394 > 192.168.215.4.54277: UDP, length 16 19:15:30.276112 IP source.ip.52394 > 192.168.215.4.54277: UDP, length 16 19:15:30.726048 IP source.ip.52394 > 192.168.215.4.54277: UDP, length 16 So some udp ports are "ignored/dropped" ? Any idea what could be wrong? Edit: This is strange: The Forward rule has data packets, but the PREROUTING rule has 0 packets... iptables -nvL -t filter |grep 54277 Chain FORWARD (policy DROP 0 packets, 0 bytes) 168 8401 ACCEPT udp -- * * 0.0.0.0/0 192.168.215.4 state NEW,RELATED,ESTABLISHED udp dpt:54277 iptables -nvL -t nat |grep 54277 Chain PREROUTING (policy ACCEPT 405 packets, 24360 bytes) 0 0 DNAT udp -- ppp0 * 0.0.0.0/0 my.external.ip udp dpt:54277 state NEW,RELATED,ESTABLISHED to:192.168.215.4

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• Re-deploy Reports from SCOM 2007 R2 Management Packs

  - by Gabriel Guimarães

  I've migrated Reporting Services on a SCOM 2007 R2 install, and noticed that the reports have not being copied. I can create a new report, but the ones I've had because of the management packs are gone. I've tried re-applying the Management Packs however it doesn't re-deploy them and when I try to access for example: Monitoring - Microsoft Windows Print Server - Microsoft Windows Server 2000 and 2003 Print Services - State View - select any item and click Alerts on the right menu. I get the following error: Date: 12/24/2010 12:40:35 PM Application: System Center Operations Manager 2007 R2 Application Version: 6.1.7221.0 Severity: Error Message: Cannot initialize report. Microsoft.Reporting.WinForms.ReportServerException: The item '/Microsoft.SystemCenter.DataWarehouse.Report.Library/Microsoft.SystemCenter.DataWarehouse.Report.Alert' cannot be found. (rsItemNotFound) at Microsoft.Reporting.WinForms.ServerReport.GetExecutionInfo() at Microsoft.Reporting.WinForms.ServerReport.GetParameters() at Microsoft.EnterpriseManagement.Mom.Internal.UI.Reporting.Parameters.ReportParameterBlock.Initialize(ServerReport serverReport) at Microsoft.EnterpriseManagement.Mom.Internal.UI.Console.ReportForm.SetReportJob(Object sender, ConsoleJobEventArgs args) The report doesn't exist on the reporting services side. how do I re-deploy this reports? Thanks in advance.

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• Connecting together DIR-615 and DIR-655

  - by ra170

  On my DIR-655 my internal network is: 192.168.0.x On my DIR-615 my internal network is: 192.168.1.x They are both connected to my firewall PIX 501 box The PIX itself is connected to the comcast modem. I briefly looked at the menu options on those router and they look similar, however I'm not sure what's the best way to connect those two together so that I can go between those networks. (printing, file browsing, etc.) I'm not sure if I have to do this somehow on those two router or on the PIX itself, or probably on all of them. If anyone has experience with something like that please let me know..

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• How to setup separate MySQL and PHP VPS servers

  - by Fazal

  Someone recommended I should have my MySQL server separate from my Apache/PHP server in case of hacking and such. By visiting linode, slicehost and various articles here on serverfault I've managed to cobble together a decent set of instructions on how to do the Apache/PHP bit. I'm using Rackspace VPS and they provide an internal IP for each server. If I setup a MySQL VPS, should I assume that I would just add the internal IP for the database host? And I guess that I would only need to open up my default ssh port and mysql ports and install phpmyadmin on there? Ideally I would have webserver.mydomain.com and dbserver.mydomain.com (two 256mb VPS's) with servermin on webserver.mydomain.com and phpmyadmin on dbserver.mydomain.com. If anyone has any guides or advice on how to setup this type of solution I'd be more then grateful!

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• Nginx Installation on Ubuntu giving 500 error

  - by user750301

  I just installed nginx on ubuntu 12.04 LTS. When i access localhost it gives me : 500 Internal Server Error nginx/1.2.3 error_log has following rewrite or internal redirection cycle while internally redirecting to "/index.html", client: 127.0.0.1, server: localhost, request: "GET / HTTP/1.1", host: "localhost" This is default nginx configuration: nginx.conf has: include /etc/nginx/sites-enabled/*; /etc/nginx/sites-enabled/default has following root /usr/share/nginx/www; index index.html index.htm; # Make site accessible from http://localhost/ server_name localhost; location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. try_files $uri $uri/ /index.html; # Uncomment to enable naxsi on this location # include /etc/nginx/naxsi.rules }

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• How to set the preffered network interface in linx

  - by Mike Cooper

  I have my network set up like this. http://docs.google.com/Doc?docid=0AZ1YxuLE4djaZGhqN2s1NmRfMjhjNjc0Ym1meg&hl=en In words: I have a machine (Calcium, running Arch Linux) that has two network interfaces. eth0 is hoooked up to a router, and is gigabit. Eth1 is hooked up directly to the university network over 10Megabit. The router's uplink is hooked up to the university network as well, and it is also 10Megabit. Currently (I believe) all traffic on Calcium is going through eth0, through the router, regardless of whether it is internal or external. (How can I confirm this?) Ideally, traffic that is destined for the internal network (192.168.10.0/24) would travel over eth0 to the router, and wherever it is going. ALL other traffic should go over eth1. I suspect that this behavior could be acheived with IP tables? I don't really know where to start looking to learn that though, so any links would be appreciated.

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