The main functionality of having secret codes hidden within a mobile device was originally intended for the employees of the respective devices to trouble shoot and perform procedures. Yet now, living in a digital world, everyone has access to this information.
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How to setup Active Directory (AD) In Windows Server 2016
15 de Dezembro de 2016 – 11:16
Windows server 2016 is the upcoming server operating system from Microsoft scheduled to be release sometime around the 3rd quarter of 2016. In this tutorial I will go through step by step on how to install the Active Directory ( AD ) role on Windows Server 2016. If you are setting up the server for production is recommended to set a static IP address on the server before you start the AD installation. Also before you start the AD installation, rename the server now if you need to, once you have installed the AD role on the server, it is not easy to change the name without breaking a lots of things.
Emails between O365 and On-premises do not work
7 de Dezembro de 2016 – 15:28
Error message: 451 4.4.0 Primary target IP address responded with: “451 5.7.3 Must issue a STARTTLS commnd first” Office 365 Hybrid
In some scenarios you might need to, in your firewall: Disable Content Inspection with TLS
more about in:
http://www.moh10ly.com/blog/office-365/emails-between-o365-and-on-premises-do-not-work
How to find a Global Catalog server?
2 de Dezembro de 2016 – 10:19
With DNS Requests (NSLOOKUP)
In an Active Directory environment, all Global Catalogs are anchored in DNS . There is a separate subdomain ‘GC._msdcs ….’ in the namespace of the AD root domain (please remember: the global catalog does not refer to individual domains, but to the entire forest). So if your root domain in the forest is e.g. example.root, then you get a list of all GCs with this command:
C:\> nslookup gc._msdcs.example.root
Server: dns01.example.root
Address: 10.127.60.3
Name: gc._msdcs.example.root
Adresses: 10.127.60.100
10.127.60.102
10.127.60.103
10.127.77.1
10.127.77.130
10.127.93.2
10.127.93.12
192.168.35.1
The container _msdcs contains the infrastructural DNS records of the Active Directory. This is also where all the SRVservice records for the domain controllers are stored.
With DSQUERY
You can also use the standard command line tool DSQUERY for searching GCs. The search can be limited to certain domains or AD sites. However, you must be authenticated in the regarding forest and DSQUERY must be available on your machine (this is usually the case on Widows servers). As a result, the server objects in the Configuration partition is displayed:
C:\> dsquery server -isgc
“CN=DC001,CN=Servers,CN=Site-Sidney,CN=Sites,CN=Configuration,DC=example,DC=root”
“CN=DC014,CN=Servers,CN=Site-Auckland,CN=Sites,CN=Configuration,DC=example,DC=root”
…
C:\> dsquery server -isgc -domain "dev.example.com"
…
C:\> dsquery server -isgc -site "Site-Auckland"
…
Per Script with an LDAP filter
In the last section we have seen that the global catalog servers are present in the configuration partition of the directory as specific objects. Her we can look for them with our own script. These servers have set the first bit in their ‘options’ attribute. All we need is the appropriate LDAP filter:
ldapFilter = "(&(objectClass=nTDSDSA)(options:1.2.840.113556.1.4.803:=1))"
Set rootDSE = GetObject("LDAP://rootDSE")
configDN = rootDSE.Get("configurationNamingContext")
Set ado = CreateObject("ADODB.Connection")
ado.Provider = "ADSDSOObject"
ado.Open "ADSearch"
Set objectList = ado.Execute("<LDAP://" &configDN& ">;" & ldapFilter & ";distinguishedName;subtree")
While Not objectList.EOF
nTSDSA = objectList.Fields("distinguishedName")
serverDN = Mid(nTSDSA, 18) 'CN=NTDS Settings abschneiden => Server Objekt
Set serverObj = GetObject("LDAP://" & serverDN )
WScript.Echo serverObj.dNSHostName
objectList.MoveNext
Wend
How Do I Find A List Of Global Catalog Servers Using Nslookup?
2 de Dezembro de 2016 – 10:09
The following commands will list all Global Catalog Servers in your Active Directory domain:
- From the command prompt, type nslookup.
- C:\nslookup
- Set the type to server.
- >set type=srv
- Find the Global Catalog Server(s).
- >_gc._tcp.<DnsForestName>
- Example:
- >_gc._tcp.“your domain.com”
- The results will include the hostname and IP address of each Global Catalog Server.
- Type “exit” to leave the nslookup session.
Default certificate could not be created. Publish aborting
14 de Novembro de 2016 – 19:44
You need to tell the Publisher where to get the Certificate from:
- Go to Project-> Properties
- Go to the tab named “Signing”
- Check the Checkbox labeled ‘Sign the ClickOnce manifests’. This enables the section where you can point to a certificate.
- Click on the button labeled ‘Select From File…”. In the directory listing, choose a key file (.pfx) and Open.
- From the step 3, click the button labeled “More Details…”. This will display the certificate you’ve just selected.
- Click “Install Certificate” and follow the prompts.
- Save and Publish your Solution.
Erro 105 (err_name_not_resolved)
24 de Outubro de 2016 – 14:24
Erro 105 é um erro chato que às vezes você encontrar ao usar o Google Chrome. Na realidade, este erro não é um problema com o Chrome, mas é um problema com a sua conexão com a internet e as configurações de DNS. Siga as instruções deste tutorial para corrigir o problema rapidamente.
Detalhes
Erro 105 é um erro de conexão que pode aparecer quando você estiver usando o Google Chrome. Ele pode aparecer a qualquer momento e não é causada por um determinado site. Quando você encontrar erro 105, você também vai ver a seguinte mensagem exibida:
erro 105 (net::err_name_not_resolved): não foi possível determinar o endereço dns do servidor.
Por que erro 105 aparecem no Chrome?
Há várias razões para erro 105 aparecerá. Eles estão todos relacionados com a configuração de sua conexão de internet e como o seu computador acessa a internet. É muito técnico, mas, essencialmente, o problema é causado pela forma como o computador está tentando se conectar à internet. Ele pode ser bloqueada pelo firewall ou pelo seu ‘router’.
Como corrigir o erro 105?
Existem três métodos para a fixação de erro 105. A melhor solução é alterar as configurações do Google Chome, que é bastante fácil de fazer (solução 2). Os outros dois envolvem redefinir algumas das suas conexões de internet e também verificar o seu regras de antivírus/firewall.
Solução 1
Esta solução irá repor o catálogo Winsock de volta para a configuração padrão. É seguro.
1. Abra o aplicativo cmd (prompt de comando), Basta clicar no botão do Windows, digite cmd, Botão do Windows 7
2. Isto irá abrir uma janela preta Prompt de comando
3. Tipo: netsh winsock reset catalog
4. Pressione a tecla ENTER
5. Tipo: netsh int ip reset reset.log
6. Pressione a tecla ENTER
7. Reinicie o computador
Speed comparison between USB 2.0, USB 3.0, SATA and Firewire
6 de Outubro de 2016 – 18:05
The theoretical maximums are as follows:
In bits per second, that is:
- USB 1.1 = 12 Mbit/s
- Firefire 400 = 400 Mbit/s
- USB 2.0 = 480 Mbit/s
- FireWire 800 = 800 Mbit/s
- USB 3.0 = 5 Gbit/s
- USB 3.1 = 10 Gbit/s
- eSATA = Up to 6 Gbit/s (750 MB/s) right now as it depend on the internal SATA chip.
- Thunderbolt = 10 Gbit/s × 2 (2 channels)
- Thunderbolt 2 = 20 Gbit/s
- Thunderbolt 3 = 40 Gbit/s
In Bytes per second, that is:
- USB 1.1 = 1.5 MB/s
- Firefire 400 = 50 MB/s
- USB 2.0 = 60 MB/s
- FireWire 800 = 100 MB/s
- USB 3.0 = 625 MB/s
- USB 3.1 = 1.21 GB/s
- eSATA = 750 MB/s
- Thunderbolt = 1.25 GB/s × 2 (2 channels)
- Thunderbolt 2 = 2.5 GB/s
However, this does not provide the actual answer. As an example, FireWire 400 is a serial connection. The entire 400 Mbps is available for data transfer. USB 2.0 sends command and control data through the same connection the data uses limiting the 480 Mbps connection to 380 to 400 Mbps. When considering throughput the list looks entirely different.
https://en.wikipedia.org/wiki/List_of_device_bit_rates#Peripheral
IP Ratings (Ingress Protection)
19 de Setembro de 2016 – 12:00
Two-digit number established by the International Electro Technical Commission, is used to provide an Ingress Protection rating to a piece of electronic equipment or to an enclosure for electronic equipment.
The protection class after EN60529 are indicated by short symbols that consist of the two code letters IP and a code numeral for the amount of the protection.
Example: IP65 (NEMA 4)
The two digits represent different forms of environmental influence:
• The first digit represents protection against ingress of solid objects.
• The second digit represents protection against ingress of liquids.
The larger the value of each digit, the greater the protection. As an example, a product rated IP54 would be better protected against environmental factors than another similar product rated as IP42.
SQL Server: The transaction log for database is full
5 de Julho de 2016 – 8:36
Right-click your database in SQL Server Manager, and check the Options page. Switch Recovery Model from Full to Simple then right-click the database again. Select Tasks Shrink, Files. Shrink the log file to a proper size (I generally stick to 20-25% of the size of the data files).
Switch back to Full Recovery Model, and take a full database backup straight away.
You now need to figure out whether you need the ability to recover your database to a point-in-time. If so, schedule regular transaction log and perhaps differential backups according to the requirements of your business.
In case the business can live with a certain amount of data loss, schedule full backups and switch to Simple mode.
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