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  • 8051 MCU debug board function

    - by b-gen-jack-o-neill
    Hi, in school I have written many programs for 8051 compatible CPU. But I never actually knew how our "debug" sets worked. I mean, we test our programs in special sets, which actually allow you to very simply load program to CPU via PC serial port. But I thing you know this musch more better than I. But how it works? I mean, I know there is chip which adjusts signal level from PC serial port to TTL logic, and than connected to serial line of 8051. But thats all I know. Actually even my teacher doesen´t know how it works, since school bought it all. So, I suspect there is some program already running in the 8051 which handles communication and stores your program into memory, am I right? But, how can you make 8051 to process instructions from different location than ROM? Becouse if I am right, you cannot write into ROM memory by any instruction, as well as 8051 can only read instructions from ROM?

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  • Old operational master still thinks it is the "one"

    - by Doug
    Hi there, I have a domain with 3 AD servers for now i'll just call them: AD01 (Win 2008 GC, Operations master) AD02 (Win 2008 GC) AD03 (Win 2003 GC) A couple of months there was some hardware issues with AD01 so the operations master, PDC and Infrastructure Master was moved to AD02. All machines where on while this was happening. AD01 (Win 2008 GC) AD02 (Win 2008 GC, Operations master) AD03 (Win 2003 GC) AD01 was then shutdown for a month. Upon starting this machine up with replaced hardware (NIC and RAID card) i now have a weird problem. AD01 Thinks it is operations master still in AD on the local box AD02 & AD03 Thinks AD02 is operations master in AD on both boxes When running DCDIAG on AD01 i get a number of issues (listed below) When running "dcdiag /test:advertising" on AD01: Doing primary tests Testing server: Default-First-Site-Name\AD01 Starting test: Advertising Warning: DsGetDcName returned information for \\ad02.domain.local, when we were trying to reach AD01. SERVER IS NOT RESPONDING or IS NOT CONSIDERED SUITABLE. ......................... AD01 failed test Advertising Running partition tests on : ForestDnsZones Running partition tests on : DomainDnsZones Running partition tests on : Schema Running partition tests on : Configuration Running partition tests on : domain Running enterprise tests on : domain.local When running "dcdiag" on AD01 i get the following errors (excerpt of the Final output): Testing server: Default-First-Site-Name\AD01 Starting test: Advertising Warning: DsGetDcName returned information for \\ad02.domain.local, when we were trying to reach AD01. SERVER IS NOT RESPONDING or IS NOT CONSIDERED SUITABLE. ......................... AD01 failed test Advertising Starting test: FrsEvent There are warning or error events within the last 24 hours after the SYSVOL has been shared. Failing SYSVOL replication problems may cause Group Policy problems. Starting test: NCSecDesc Error NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS doesn't have Replicating Directory Changes In Filtered Set access rights for the naming context: DC=ForestDnsZones,DC=domain,DC=local Error NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS doesn't have Replicating Directory Changes In Filtered Set access rights for the naming context: DC=DomainDnsZones,DC=domain,DC=local Starting test: Replications [Replications Check,Replications Check] Inbound replication is disabled. To correct, run "repadmin /options AD01 -DISABLE_INBOUND_REPL" [Replications Check,AD01] Outbound replication is disabled. To correct, run "repadmin /options AD01 -DISABLE_OUTBOUND_REPL" So the problem appeasr to be that when i moved the operations master, AD01 never got the memo, and now that it's started up, all the other AD servers don't think its the boss anymore when it trys to replicate etc. So i really need to manually update AD01 so that it knows who the operations master, instrastructure and PDC is - but i'm not having any luck I've been googling for nearly a day and all solutions lead to "the cake is a lie" Your ninja skills will be greatly appreciated

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  • When I log on to my company desktop, I log on to a domain. How is this domain name installed?

    - by learnerforever
    Hi, When I have to work on my machine in company, I have noticed that I log on to a domain (named on the basis of company name) and not really on that computer. From, what I understand, this has a few advantages, the primary being that I just need one password for the domain and can work through any of the machines in company. My questions are : What software on desktop/network have to be installed so that the desktop recognizes and gives me option of logging into a domain. I would guess that a software can be installed on desktop, and there we can configure the IP address of domain server of company and port number, which handles authentication. Is this correct? This takes me to another question that how are softwares installed on end machines in a company. Going to each machine physically and installing looks very unweildy from administrator point of view. An obvious solution would be to install softwares (and updates) over network. My question on this are: What protocols,keywords come into picture when administrator installs OS,softwares,updates from his administrator machine to end machine through network. Thanks,

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  • Add server 2008 to 2003 domain schema upgrade failed

    - by Ken
    I'm trying to add a server 2008 r2 server to an existing 2003 domain (upgraded to 2003 functionality). I've followed the steps from microsoft which are clarified by this post: 2003 DC AD upgrade to 2008 on second server migration plan While running adprep /forestprep I lost my connection and wasn't able to resume or remote control that session, so I couldn't see the end result of the command. Rerunning adprep /forestprep indicates that the process has already been completed successfully. After finishing the rest of the steps (/domainprep ... and /gpprep, etc), the 2008 server won't join. The error message is the same "you need to run forestprep first" So the situation I'm in is that I can't rerun /forestprep, but my Registry key still reads schemaVer=30. Should I have staged forest upgrades? Any ideas how to get my schema ver to 44 at this point?

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  • New set up DHCP Server on Server 2008 R2 won't work, Event-ID 1046

    - by Ian
    I just set up a 2008 R2 as DC, and DNS. Both worked fine, DNS works fine forward and reverse lookup. Now I wanted to install DHCP. As soon as the installation of the role is finished, I get this Event-ID Error 1046: Link When I first set it up there was also a Event-ID 1059 Error: Link The dhcp server is authorized. I don't know what else I should do. Getting crazy here, hope you guys can help me.

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  • Setting up a Windows Server 2008 R2 DC + Fileserver : native or virtual?

    - by user126890
    I want to deploy a new DC + Fileserver using Windows Server 2008 R2 SP1 Standard Edition on a Dell PowerEdge R410 and iSCSI storage for a small business (~30 people). Should I install the system native on the server or use a virt layer? I don't have a budget for virtualization so i gotta go with something free... What's a better working routine, taking snapshots of vm's or taking backups (Acronis/CloneZilla) of systems? If I use a virt system, I need a GUI for some people in the business to reset the system to a earlier state in emergency situations. I wanted to install phpVirtualBox once but never finished, is it suitable in a productive environment? server specs: Intel Xeon E5620 CPU (2,40GHz, 4C, 12MB Cache) 8GB RAM Dual Rank LV RDIMMs 1333MHz 2x 1TB SATA 7,2K 3,5, RAID1

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  • Win Server 2008 force kerberos setting

    - by ftiaronsem
    I am currently facing the problem that a linux machine running Ubuntu 10.04 LTS with samba and winbindd installed is unable to join a Domain, that is managed by a Windows 2008 DC. The linux config, is probably alright, since I have successfully used it at multiple sites, running 2008 as well as 2003 DCs. The error I get ("libads/kerberos.c: Join to domain is not valid. Client credentials have been revoked"), indicates that there is a kerberos problem. Normally the linux box is supposed to authenticate via NTLM and is configured that way. The only reason I can image why it tries kerberos is that the DC is forcing it. Do you know whether there is any setting in the security policies of a window 2008 server, that would completely block NTLM, forcing kerberos? If so, where can I find this setting?

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  • gpupdate failing when using Samba 4 AD DC

    - by darthfoolish
    I have a Samba 4 AD domain running with 2 DCs on Centos 6.5, with a named DNS backend. I have multiple Windows 7 machines joined to this domain, which is fine. However, I can't get GPOs to apply. When running gpupdate, I get the following output The processing of Group Policy failed. Windows attempted to read the file \\sysvol\\Policies{31B2F340-016D-11D2-945F-00C04FB984F9}\gpt.ini Obviously, you don't normally see what it's trying to connect to when it's successful, but I would have thought the first place shows up, I should be seeing So, what governs what data gets put in between those angle brackets? If it is just supposed to be the domain, then what else could be going wrong? Thanks in advance for any help.

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  • samba4 dc "network location cannot be reached"

    - by mitchell babies peters
    to clear the air centos 6.4? (maybe 6.3) as the server, running samba 4.0.10, trying to add a windows 7 client that has connectivity to the server. this is what windows shouts as me as it mocks my dependence on network infrastructure. "the network location cannot be reached." i have access to the domain contoller (dc) im using the dc as the domain name server (dns) already, and the name is correctly resolving, and it is correctly forwarding outbound traffic. i have nothing but self taught experience with active directory(ad) so if i am missing something obvious, please shout it out, but keep the verbal abuse to a minimum. i checked samba4DC + my error and found nothing relevant to my issue, if i missed something please point me in that direction. the weekend is just starting as i write this so i probably wont be back on to check this post for a day or three, but i might because this mystery is killing me. i followed the samba4 as a dc guide here and i supplimented gaps with this i have tested kerberos, ntp, and set my DC as the clock to sync to in my windows client and it appears to be a very small fraction of a second off so that shouldn't be it. also, firewall and selinux are both off for testing. i have also tried disabling ipv6, and cleared the registry of ipv6 records (allegedly the default samba4 as a DC runs as windows server 2003 which allegedly does not support or tolerate the existence of ipv6, fair warning, i heard this on the internet so it is probably a lie) i have tried a few other things that i have forgotten because i have been doing this for a day and a half now. ideas welcome. suggestions for alternatives are also welcome, as long as they are free. i was given a budget of $0 dollars and told to implement active directory (no prior knowledge of active directory at that point).

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  • Connect to internet through DC with 2 network interfaces

    - by Ali Foroughi
    I have a network like this : Client 1 <== Wireless ==> Access Point <== Wire ==> DC <== Wireless ==> ADSL Modem Client 1 : IP : 192.168.1.181 DG : 192.168.1.100 DNS : 192.168.1.100 Access Point : IP : 192.168.1.10 DG : 192.168.1.100 DC : IP : 192.168.1.100 DG : 192.168.1.1 DNS : 127.0.0.1 ADSL Modem : IP : 192.168.1.1 I can ping yahoo.com from client1, but cannot browse the internet. UPDATE1 : my DC has two network interfaces that I bridge together. UPDATE2 : I powered down the DC firewall UPDATE3 : I set a forwarder for my DC to 8.8.8.8 (Google dns)

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  • How to make other computers connected to my workgroup able to browse my web server via my private local domain www.mydomain.local?

    - by Motivated Student
    Background I have a broadband connection. The fiber optic cable running from outside to my building is connected to a converter unit. The output of the converter is connected to a router. The router also provides 8 LAN ports to which the computers are connected. Shortly speaking, all computers are interconnected in a workgroup as opposed to a domain. My computer hosts an IIS web server using a private or local domain name www.mydomain.local. I has added 127.0.0.1 www.mydomain.local to the hosts file in the server C:\Windows\System32\drivers\etc so I can browse the site from within the server. So far so good. How to make other computers connected to my workgroup able to browse my web server via my private local domain www.mydomain.local? Note: Again, I am a newbie. I have no idea what I should do next.

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  • Domain restore from RODC

    - by Bump
    Can an AD Domain be restored from a RODC with a copy of the GC? Does an offsite DC replicating the AD need to be a full DC to provide a sufficient up to date AD Backups for disaster recovery?

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  • VMWare Newbie - looking for hardware recommendations and help :) [closed]

    - by Dan
    I am looking for some hardware recommendations on an upcoming virtualization project. We are a small company (80 users - 25 in site 1, 55 in site 2) currently using Windows Server 2003 - no VM servers yet. Our AD is setup where site 1 is the root domain and site 2 is a subdomain/subnet - connected by T1 and VPN for failover. The current DC's also server as file servers, print servers, AntiVirus servers. Email is in the cloud. Additionally then in site 1 we have 3 additional member servers - one running IBM Websphere for a customer specific app, one running Infor PowerLink (no real heavy load) and another that we use for Virtual Studio apps and also runs DirSync for Exchange Online. No heavy workloads on any of these machines really. We also have an AS400 box that we run ERP/CRM software on that site 2 connects to over the WAN link. In site 2 we also have a SQL machine that runs on Win2K server. Database files are not large less than 5 GB. Light to Medium workload on this machine. File servers in each site store less than 500 GB data and probably won't grow to more than 1TB in the next 5 years. I am looking to go to VMWare in both sites and virtualize all servers. What recommendations do you have for server, storage hardware? Is it safe to virtualize all of your DC's? Any help or advice would be greatly appreciated. Thanks.

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  • Error regarding DNS - "... must be able to resolve names ..." (Windows Server 2008 R2 installation)

    - by Scolytus
    I'm trying to replace our old Windows 2000 Server by a Windows Server 2008 R2. I followed the guide at MSDN. Coming to the step "Install Active Directory Domain Services..." the option to install the DNS-Server was grayed-out. According to Microsoft Support I skipped the DNS Server Installation at this point. (Because of the single-label DNS name) I then installed the DNS-Server role and created a forward-lookup-zone for the domain. When running the Best Practices Analyzer of the DNS-Server role I get these two messages for both domain controllers (the old win2k and the new win 2008 R2): The DNS server [IP address] on [adapter name] must be able to resolve names in the primary DNS domain zone The DNS server [IP address] on [adapter name] must be able to resolve names in the forest root domain name zone The TechCenter articles suggest to use a proper DNS Server - that's pointless when I try to configure a proper DNS Server. How do I configure the DNS Server in a way that it resolves these zones? Or are these errors irrelevant? dcdiag /v /test:DNS Seems to run fine...

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  • Why do clients on Branch Sites insist on accessing SYSVOL on the HQ DC instead of the branches' RODC?

    - by pepoluan
    I'm still scratching my head over this situation... You see, we have 3 RW DCs in the HQ, and 1 RODC on every branch sites (50+ locations). During startup, a script will pull in some files from \\example.com\SYSVOL\example.com\Common\Data But we have been experiencing bandwidth overload. A traffic analysis indicated that lots of clients in the Branch Sites were trying to access the SYSVOL located in the RW DCs. E.g.: If the RW DCs are 10.1.0.15, 10.2.0.15, and 10.3.0.15, and site 'X' has a subnet of 10.27.0.0/16 (with its RODC at 10.27.0.15), clients at site 'X' seem to insist on accessing \\10.1.0.15\SYSVOL or \\10.2.0.15\SYSVOL or \\10.3.0.15\SYSVOL; they seem to be ignoring the RODC completely. What is going on here? Where should I start investigating what went wrong? BTW, I'm already using DFS-R, and replication have been going on successfully; I can put a small 'canary' file on one of the RW DCs, and within minutes all the RODCs will have successfully replicated the 'canary' file.

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  • Active Directory Domain Services on remote VPS

    - by Rob Angelier
    I really need help with configuring Active Directory Domain Services on a remote VPS. Situation we have a remote Windows Server 2008R2 VPS and i just installed the Active Directory Domain Services Role. A DNS Server was also configured by default at the end of the Active Directory installation. Problem I can't get my Windows 7 machine to register itself to the domain i have just created Question What are the steps i have to take to test my Active Directory configuration, and how do i connect clients to this Domain? I can provide screenshots and more information if neccesary. looking forward to your replies! best regards, Rob Angelier

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  • Domain Computers Not Listed In Network

    - by Giawa
    Our network computers are all connected to a domain, and I can see them if I search the active directory (I can click 'search active directory' and then select 'computers' and then Find Now, and all of the computers will appear). However, the computers are not listed in the network browser on any of our computers (Win XP, Win7, Linux, etc) which are connected to the domain. DC is running Windows Server 2008 (Windows Server Standard) with a configured DNS and DHCP server. All of the IPs on our local network are static IPs, although I can't see how that would make a difference. I can still connect to computers on the network via \\computer_name, but I cannot browse them in 'network' or in 'my network places'. The computer browser service is not started on the DC, but I tried starting that and it had no effect. DC currently has the firewall configured as 'off' to try to debug this problem. Thanks in advance

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  • ssd firmware, linux: updating large batch of drives

    - by wryfi
    I was recently hit with a fatal firmware bug that affected dozens of Crucial SSDs deployed in my datacenter. Many of the affected machines use LSI or other proprietary SAS controllers, which Crucial's bootable ISO does not recognize. None of the affected machines has a Windows license. The story is roughly similar for other SSD mfrs, including Samsung and Intel. To resolve this issue, I was forced to stop each machine, remove the affected SSD, remove the SSD from its hotswap caddy, install it temporarily into my ThinkPad, flash the firmware, reverse, rinse, repeat. It took the better part of a day to get through all the affected devices. I am looking for hardware, software, and/or purchasing strategies to ease this pain, as SSD firmware bugs seem inevitable, and our SSD footprint is growing. My first thought is to get a laptop with eSATA and one of these cables (http://www.newegg.com/Product/Product.aspx?Item=N82E16812311004). That should at least make it so I don't have to remove the drives from their caddies. Surely others have run into this. Any novel solutions?

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  • Computers "applying computer settings" for a long time on start-up...why?

    - by tombull89
    Hello. Might be a bit of a slong shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when it gets to "applying computer settings" it can hang for a long time (~15 minutes). If you unplug the computer from the network it starts up fine, gets to the login screen, then you can plug the network cable in and it will work fine. I don't think it's anything to do with the fact we've been coming close to running out of IP addresses or a problem with our DHCP. Microsoft KB says apply the latest service pack, which we've done, and check a service. Servers and domian controllers are S2003, Computers and Desktops are XP. Does anybody have any thoughts on what to try?

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  • First web server questions

    - by Graeme
    Hi there, Just looking for some help/suggestions with this. I require my own server for an upcoming project that will be hosting users websites. I want to build a control panel the user can log into and modify their website which will be stored elsewhere on the server. This all seems easy enough, It's just managing domains and emails that confuse me. What should I look for to manage domain names and point them to the correct website and also what would be the best way to manage email accounts/set up new ones etc. I want to avoid cPanel/WHM if possible, I'm looking to control most things through the control panel I will be building. So any suggestions on this would be useful as well, as I will be wanting to add email accounts through php (Can be done using a shell I assume?). I will also be wanting to measure bandwidth used on the websites contained in each users directory, any suggestions on making this possible? I'm really looking for some suggestions on what software to use to set this up, any advice would be really helpful! Thanks, Graeme

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  • Cannot start eventlog service

    - by ANervousTwitch
    On a windows 2k8R2 DC box the eventlog service wont start. When i try to start the service the machine returns: "Windows could not start the Windows Event Log service on Local Computer. Error 13: The data is invalid." event viewer wont open either. obviously, i dont have an event log for this error. ive already tried clearing the event logs. that didnt do anything. the other DC isnt experiencing this issue.

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  • Have you successfully installed Active Directory Management Gateway Service on 2008?

    - by ssg31415926
    I've got a pair of 2008 DCs onto which I've been trying to install the Active Directory Management Gateway Service. (I only wanted it on one but when that didn't work I tried another.) Both are failing with: "The update does not apply to your system". They're both Windows Server 2008 Domain Controllers, x64 version. Both have .NET 3.5 SP1 installed on them. One has Service Pack 2 installed and the other has the hotfix from 967574 installed. Both servers were rebooted after the installed of each of the required updates. I have attempted to install Windows6.0-KB968934-x64.msu on both and get the error reported above. According to the docs, my machines meet the requirements, so something must be missing from the requirements. Or there's something odd about these DCs. Has anyone succeeded? If so, did you have to install/remove anything (else) to get it installed?

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  • How do I cancel windows server 2003 repair install?

    - by Kilgore2k
    System: Windows 2003 Server Enterprise Scenario: NTDS db is corrupt and all attempts to fix with esentutl fail. Ran chkdsk which seemed to repair disk error and give access to the ntds.dit file but still esentutl fails. (Attached the drive to a different server to run the esentutl) Error: Access to source database '[path to copy of]/ntds.dit' failed with Jet error -1022. Operation terminated with error -1022 (JET_errDiskIO, Disk IO error) after 0.170 seconds. This error occurs on any disk I cpoy the files to including original location in C:\WINDOWS\NTDS\ Now enter the "Stupid!" and "what was I thinking!?" part (must be the late hour...) Stupid: No updated backup - after using a backup I get a network password error in the lsass error. what was I thinking!?: Started the install repair from the original CD but the install fails since the AD fails to start. Now I cant boot into any mode (safe mode, AD restore etc) nor complete the repair install. I would really like to avoid a fresh install since I have the Exchange server on this DC and would rather migrate to a new server than have to start from scratch. Thanks!

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  • Which firewall ports do I need to open in order for a domain trust to work?

    - by Massimo
    I have two Active Directory domains in two different forests; each domain has two DCs (all of them Windows Server 2008 R2). The domains are also in different networks, with a firewall connecting them. I need to create a two-way forest trust between the two domains and forest. How do I configure the firewall to allow this? I found this article, but it doesn't explain very clearly which traffic is required between DCs, and which traffic (if any) in needed instead between domain computers in one domain and DCs for the other one. I'm allowed to permit all traffic between the DCs, but allowing computers in one network to access DCs in the other one would be a little more difficult.

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