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  • Can't log in using second domain controller when first DC is unreachable

    - by rbeier
    Hi, We're a small web development company. Our domain has two DCs: a main one (BEEHIVE, 192.168.3.20) in the datacenter and a second one (SPHERE2, 10.0.66.19) in the office. The office is connected to the datacenter via a VPN. We recently had a brief network outage in the office. During this outage, we weren't able to access the domain from our office machines. I had hoped that they would fail over to the DC in the office, but that didn't happen. So I'm trying to figure out why. I'm not an expert on Active Directory so maybe I'm missing something obvious. Both domain controllers are running a DNS server. Each office workstation is configured to use the datacenter DC as its primary DNS server, and the office DC as its secondary: DNS Servers . . . . . . . . . . . : 192.168.3.20 10.0.66.19 Both DNS servers are working, and both domain controllers are working (at least, I can connect to them both using AD Users + Computers). Here are the SRV records that point to the domain controllers (I've changed the domain name but I've left the rest alone): C:\nslookup Default Server: beehive.ourcorp.com Address: 192.168.3.20 set type=srv _ldap._tcp.ourcorp.com Server: beehive.ourcorp.com Address: 192.168.3.20 _ldap._tcp.ourcorp.com SRV service location: priority = 0 weight = 100 port = 389 svr hostname = beehive.ourcorp.com _ldap._tcp.ourcorp.com SRV service location: priority = 0 weight = 100 port = 389 svr hostname = sphere2.ourcorp.com beehive.ourcorp.com internet address = 192.168.3.20 sphere2.ourcorp.com internet address = 10.0.66.19 Does anyone have any ideas? Thanks, Richard

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  • Domain Controller DNS Best Practice/Practical Considerations for Domain Controllers in Child Domains

    - by joeqwerty
    I'm setting up several child domains in an existing Active Directory forest and I'm looking for some conventional wisdom/best practice guidance for configuring both DNS client settings on the child domain controllers and for the DNS zone replication scope. Assuming a single domain controller in each domain and assuming that each DC is also the DNS server for the domain (for simplicity's sake) should the child domain controller point to itself for DNS only or should it point to some combination (primary VS. secondary) of itself and the DNS server in the parent or root domain? If a parentchildgrandchild domain hierarchy exists (with a contiguous DNS namespace) how should DNS be configured on the grandchild DC? Regarding the DNS zone replication scope, if storing each domain's DNS zone on all DNS servers in the domain then I'm assuming a DNS delegation from the parent to the child needs to exist and that a forwarder from the child to the parent needs to exist. With a parentchildgrandchild domain hierarchy then does each child forward to the direct parent for the direct parent's zone or to the root zone? Does the delegation occur at the direct parent zone or from the root zone? If storing all DNS zones on all DNS servers in the forest does it make the above questions regarding the replication scope moot? Does the replication scope have some bearing on the DNS client settings on each DC?

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  • Samba4/Ubuntu Shares Incorrectly Available to All Users

    - by Dan
    I've got my Ubuntu server working with Samba4 and got it set up as the Primary domain controller on my network with AD and all that goodness. However, I'm trying to get my Samba configuration to work with the users and groups I've defined with the Active Directory tools from Windows. For instance, I've got a share X which I want users A and B (as part of the 'management' group, known as LLGrpManager in my setup) to see, but no body else. However, after making changes to the configuration, restarting Samba, I test by connecting to the share with my Mac over Samba as user 'C' which isn't part of the management group, and I can, incorrectly, see the X share. I've tried alsorts of combinations of specifying the group with no luck at all. I've got a feeling that my global config might be too lenient or something to do with file permissions but being a bit green, I'm without clue. My /etc/samba/smb.conf # Global parameters [global] server role = domain controller server string = Office Server workgroup = LLDOMAIN realm = lldomain.local netbios name = DUMBO passdb backend = samba4 logon path = \\%L\profiles\%U logon drive = L: log file = /var/log/samba/%m.log max log size = 50 security = ads domain logons = yes domain master = auto usershare allow guests = no valid users = %S [netlogon] path = /var/lib/samba/sysvol/lldomain.local/scripts read only = no guest ok = no [sysvol] path = /var/lib/samba/sysvol read only = No guest ok = no valid users = @LLDOMAIN\LLGrpManager [ShareX] path = /data comment = Entire Data Volume guest ok = no comment = Entire Data Volume guest ok = no valid users = @LLDOMAIN\LLGrpManager admin users = @LLDOMAIN\LLGrpManager browsable = no inherit acls = yes inherit permissions = yes ... My /etc/nsswitch.conf I've also instructed the system to use the nss winbind library when searching for users or groups by adding the stanza passwd and group in /etc/nsswitch.conf: passwd: compat winbind group: compat winbind shadow: compat Permissions on the folder in question drwxrwxrwt 8 root root 4.0K Oct 28 19:11 data

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  • Using OSX home directories from linux

    - by Steffen
    I'm running an OSX (Snow Leopard) Server with OpenDirectory, which is nothing else than a modified OpenLDAP with some Apple-specific schemas. However, I want to reuse this directory on some of my Linux (Debian Squeeze) boxes. It's no problem to authenticate against OSXs LDAP Server, this works fine already. What I struggle with is the way the home folders are specified in OSX. If I query the passwd config on one of my linux machines, the OSX imported entries are looking like this myaccount:x:1034:1026:Firstname Lastname:/Network/Servers/hostname.example.com/Volumes/MyShare/Users/myaccount:/bin/bash While those network home folders might be fine for OSX-Clients, I don't want those server based paths on my linux machines. I saw that there is an NFSHomeDirectory Attribute in the OSX User inspector, but if I change this the whole user home path gets changed. Since my users should be able to login on both systems, OSX and Linux, this is not what I want. Does anyone have an idea how I must configure OSX to make my linux machines use home folders like /net/myaccount and leave the configuration for OSX clients untouched?

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  • IIS Digest repeatedly asking for authentication

    - by David Budiac
    I have a development copy of an ASP.NET intranet site checked out and running on my local machine. We're using digest authentication to allow users to log in using their active directory accounts. On my development copy only, Digest sometimes will repeatedly prompt for login information usually ~9 times per page request. After repeatedly logging in (or it also works to cancel out of 8 out of the 9 prompts), I can use the site as normal. I cannot pinpoint what is triggering the issue. Sometimes this problem triggers upon the next page request, sometimes after I edited/saved/refreshed a page, and sometimes it doesn't happen at all. Each prompt triggers several logon (Event ID 4624 & 4672) security events in the Events Viewer. Shortly after each burst of logon events, I'll see a burst of logoff events (Event ID A co-worker who has a nearly an identical setup (Windows 7, IIS 7) is not experiencing the issue. Our production copy (that is running on a different server) also does not experience the issue. We've tried to compare our settings in IIS, not really finding any differences. I'm using chrome but I've experienced the issue in other browsers.

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  • version control on large files

    - by Dustin Getz
    We happily use SVN for SCM at work. Currently I've got our binary assets in the same SVN repository as our code. SVN supports very large files (it transmits them 'streamily' to keep memory usage sane), but it is SLOOWWWWW. What asset management software do you recommend, for about a GB (and growing) worth of assets? We would prefer branching and merging (different assets & config files go to different customers).

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  • ADFS Relying Party

    - by user49607
    I'm trying to set up an Active Directory Federation Service Relying Party and I get the following error. I've tried modifying the page to allow <pages validateRequest="false"> to web.config and it doesn't make a difference. Can someone help me out? Server Error in '/test' Application. A potentially dangerous Request.Form value was detected from the client (wresult="<t:RequestSecurityTo..."). Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. To allow pages to override application request validation settings, set the requestValidationMode attribute in the httpRuntime configuration section to requestValidationMode="2.0". Example: <httpRuntime requestValidationMode="2.0" />. After setting this value, you can then disable request validation by setting validateRequest="false" in the Page directive or in the <pages> configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case. For more information, see http://go.microsoft.com/fwlink/?LinkId=153133. Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (wresult="<t:RequestSecurityTo..."). Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [HttpRequestValidationException (0x80004005): A potentially dangerous Request.Form value was detected from the client (wresult="<t:RequestSecurityTo...").] System.Web.HttpRequest.ValidateString(String value, String collectionKey, RequestValidationSource requestCollection) +11309476 System.Web.HttpRequest.ValidateNameValueCollection(NameValueCollection nvc, RequestValidationSource requestCollection) +82 System.Web.HttpRequest.get_Form() +186 Microsoft.IdentityModel.Web.WSFederationAuthenticationModule.IsSignInResponse(HttpRequest request) +26 Microsoft.IdentityModel.Web.WSFederationAuthenticationModule.CanReadSignInResponse(HttpRequest request, Boolean onPage) +145 Microsoft.IdentityModel.Web.WSFederationAuthenticationModule.OnAuthenticateRequest(Object sender, EventArgs args) +108 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +266 `

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  • Convert large raster graphics image(bitmap, PNG, JPEG, etc) to non-vector postscript in C#

    - by Dennis Cheung
    How to convert an large image and embed it into postscript? I used to convert the bitmap into HEX codes and render with colorimage. It works for small icons but I hit a /limitcheck error in ghostscript when I try to embed little larger images. It seem there is a memory limit for bitmap in ghostscript. I am looking a solution which can run without 3rd party/pre-processing other then ghostscript itself.

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  • A single AD user can't log into a single Mac bound to the domain (DirectoryServices error). How can I resolve this?

    - by Ben Wyatt
    On our campus, we have about 60 Macs joined to our Active Directory domain. Most users have no problems logging into Macs, as long as their accounts are configured correctly. However, we have one particular user who is unable to log in to just some of the Macs. He has no problem with most of them, but there is one group of them (all built from the same image) that he can't log in to. The machine in question is running OS X 10.6.2. The relevant entries from secure.log are below, with the hostname and username redacted. Aug 16 10:32:43 hostname SecurityAgent[4411]: Could not get the user record for username from DirectoryServices. Aug 16 10:32:43 hostname SecurityAgent[4411]: Will sleep 1 seconds and try again (retryCount = 4) Aug 16 10:32:44 hostname SecurityAgent[4411]: Could not get the user record for username from DirectoryServices. Aug 16 10:32:44 hostname SecurityAgent[4411]: Will sleep 2 seconds and try again (retryCount = 3) Aug 16 10:32:46 hostname SecurityAgent[4411]: Could not get the user record for username from DirectoryServices. Aug 16 10:32:46 hostname SecurityAgent[4411]: Will sleep 4 seconds and try again (retryCount = 2) Aug 16 10:33:10 hostname SecurityAgent[4411]: Could not get the user record for username from DirectoryServices. Aug 16 10:33:10 hostname SecurityAgent[4411]: Will sleep 8 seconds and try again (retryCount = 1) Aug 16 10:33:18 hostname SecurityAgent[4411]: User info context values set for username Aug 16 10:33:18 hostname SecurityAgent[4411]: unknown-user (username) login attempt PASSED for auditing Everything I've found online suggests that our use of Mobile Accounts is causing the issue. I turned that feature off, but I still can't log in as that user. id returns a record for his account, and nothing looks out of the ordinary. Has anyone here run into this before?

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  • Java constructor with large arguments or Java bean getter/setter approach

    - by deelo55
    Hi, I can't decide which approach is better for creating objects with a large number of fields (10+) (all mandatory) the constructor approach of the getter/setter. Constructor at least you enforce that all the fields are set. Java Beans easier to see which variables are being set instead of a huge list. The builder pattern DOES NOT seem suitable here as all the fields are mandatory and the builder requires you put all mandatory parameters in the builder constructor. Thanks, D

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  • getent passwd fails, getent group works?

    - by slugman
    I've almost got my AD integration working completely on my OpenSUSE 12.1 server. I have a OpenSUSE 11.4 system successfully integrated into our AD environment. (Meaning, we use ldap to authenticate to AD directory via kerberos, so we can login to our *nix systems via AD users, using name service caching daemon to cache our passwords and groups). Also, important to note these systems are in our lan, ssl authentication is disabled. I am almost all the way there. Nss_ldap is finally authenticating with ldap server (as /var/log/messages shows), but right now, I have another problem: getent passwd & getent shadow fails (shows local accounts only), but getent group works! Getent group shows all my ad groups! I copied over the relavent configuration files from my working OpenSUSE 11.4 box: /etc/krb5.conf /etc/nsswitch.conf /etc/nscd.conf /etc/samba/smb.conf /etc/sssd/sssd.conf /etc/pam.d/common-session-pc /etc/pam.d/common-account-pc /etc/pam.d/common-auth-pc /etc/pam.d/common-password-pc I didn't modify anything between the two. I really don't think I need to modify anything, because getent passwd, getent shadow, and getent group all works fine on the OpenSUSE11.4 box. Attempting to restart nscd service unfortunately didn't do much, and niether did running /usr/sbin/nscd -i passwd. Do any of you admin-gurus have any suggestions? Honestly, I'm happy I made it this far. I'm almost there guys!

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  • Can Windows logoff events be tracked?

    - by Massimo
    I'm working on an application to track network user logon/logoff events in an Active Directory domain; the application will work by auditing security logs on domain controllers. Auditing logon events can get somewhat tricky, but it can succesfully be done. My problem: how can I track logoff events? Based on some research I've done, it looks like these events are only logged locally on workstations, but not on DCs; also, the "lastLogoff" attribute exists on AD user objects, but it's not actually used by anyone. This is a very specific question: is something logged on DCs when a user logs off from a domain workstation? To clarify: I'm not intereseted in other auditing mehods, I can't deploy logon/logoff scripts and I can't install anything anywhere; I also know opened and closed network sessions are logged, but this is not what I'm looking for. I need to audit interactive logons and logoffs to domain workstations, and I can do this by only reading domain controllers security logs; reading each workstation's local event logs is out of question. If this can't be done, it's ok; but I need a clear answer on that. Can this be done? If yes, how?

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  • IRB and large variables?

    - by tesmar
    How can I print a large variable nicely in an irb prompt? I have a variable that contains many variables which are long and the printout becomes a mess to wade through. What if I just want the variable names without their values? Or, can I print each one on a separate line, tabbed-in depending on depth?

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  • Add single sign-on into existing web app

    - by EvilDr
    Apologies if this isn't the best site, I've search for an answer but can't find anything quite right. I don't actually now the correct terminology I should be using here, so any pointers will be appreciated. I have a web application that accessed by many different users across different organisations. Access is provided by each user having a unique username/password which is stored in SQL (database fields are customerID, userID, username). Some organisations are now asking if we can change this to allow "Active Directory single sign-on" so that users don't need to remember yet another set of login details. From research I can see how this is achieved using OpenAuth and Google (etc), but I know hardly anything about AD and can't find much information on this (again I'm sure it helps when you know the terminology). Is this request even possible to achieve, given that most users will be from different (and unrelated) organisations? I saw on a Microsoft Build video not long ago that there is some kind of replication service for AD to allow Cloud authentication. Is this what I should be aiming for?

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  • Users removing Administrator from files/folders permissions

    - by user64204
    We're running Windows Server 2003 R2 with Active Directory and are having an issue with network shares whereby users, in an attempt to secure their documents, remove everybody (including the Administrator account) from their files/folders permissions. Since the Administrator no longer has read permission to them, we can't even backup files manually as we get permission errors. One solution that we've found is to change the owner of the files and directories to the Administrator account. We can then change the permissions as we wish. The problem is that this has to be done manually so can't really be applied to an entire share. Another solution that we've tried is to use cacls as follows: cacls d:\path\to\share /C /T /E /G Administrator:F The problem with this is that we're still getting an ACCESS DENIED error on files/folders on which Administrator was removed. Q1: Is there a way to restore at least read access to all files/folders to the Administrator account in a recursive fashion? That would be for the short term. For the long term we're looking for a solution to prevent users from removing Administrator from files/folders permissions. Since we're going to migrate to Windows Server 2008 R2 soon we could wait until we've migrated to implement such solution if need be. Q2: Is there a way to prevent users from removing Administrator from files/folders permissions on Windows Server 2003/2008?

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  • Denormalization of large text?

    - by tesmar
    If I have large articles that need to be stored in a database, each associated with many tables would a NoSQL option help? Should I copy the 1000 char articles over multiple "buckets", duplicating them each time they are related to a bucket or should I use a normalized MySQL DB with lots of Memcache?

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  • Why does running "$ sudo chmod -R 664 . " cause me to get access denied on all affected directories?

    - by Codemonkey
    I have a project folder which has messy permissions on all files. I've had the bad tendency of setting everything to octal permissions 777 because it solved all non security related issues. Then FTP uploads, files created by text editors etc. has their own set of permissions making everything a mess. I've decided to take myself together and start using the permissions the way they were meant to be used. I figured 664 was a good default for all my files and folders, and I'd just remove permissions for others on private files, and add +x for executable files. The second I changed my project folder to 664 however: $ sudo chmod -R 664 . $ ls ls: cannot open directory .: Permission denied Which makes no sense to me. I have read/write permissions, and I'm the owner of the project folder. The leftmost part of ls -l in my project folder looks like this: -rw-rw-r-- 1 codemonkey codemonkey ... drw-rw-r-- 5 codemonkey codemonkey ... -rw-rw-r-- 1 codemonkey codemonkey ... -rw-rw-r-- 1 codemonkey codemonkey ... drw-rw-r-- 3 codemonkey codemonkey ... -rw-rw-r-- 1 codemonkey codemonkey ... -rw-rw-r-- 1 codemonkey codemonkey ... -rw-rw-r-- 1 codemonkey codemonkey ... drw-rw-r-- 4 codemonkey codemonkey ... drw-rw-r-- 5 codemonkey codemonkey ... I assume this has something to do with the permissions on the directories, but what?

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  • Python large variable RAM useage

    - by PPTim
    Hi, Say there is a dict variable that grows very large during runtime- up into millions of key:value pairs. Does this variable get stored in RAM,effectively using up all the available memory and slowing down the rest of the system? Asking the interpreter to display the entire dict is a bad idea, but would it be okay as long as one key is accessed at a time? Tim

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  • Visualizing the SiteMap of a large (page number) website

    - by Michael
    I'm looking for a tool or service that can spider a web domain with a large number of pages, create a sitemap, and then visualize that map in a way that will help me see, understand and group content (I'm new to the site) Something like a tree-view or other standard Site Map visualizations would be great. I am yet unable to find a tool that does this (I've found plenty of things to spider the site and create an xml file, nothing to visualize it) Thanks!

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