DS commands and FOR loops

Good old fashion "ds" commands, basic but always available and just do the job! While now days we have PowerShell, I still do come across Win 2003 boxes. DS commands in combination with FOR loops are quite powerful.

How to query Active Directory for disabled computer accounts and move them to specified OU?

for /f "Tokens=*" %s in ('dsquery computer -disabled -limit 0') do (DSMOVE %s -newparent "ou=Disabled_Computers,dc=securesenses,dc=net")

How to move computers to a specified OU using list of hostnames? (hostnames must be listed on per line)

for /f "Tokens=*" %i in (comps.txt) do dsquery computer -name %i | (dsmove -newparent "OU=DBServers,OU=Servers,dc=securesenses,dc=net")

How to create security groups with descriptions listed in a text file?

for /f "delims=, tokens=1,2" %i in (groups.txt) do dsadd group "CN=%i,OU=Groups,DC=securesenses,DC=net" -desc %j

How to disable list of computers?

for /f "Tokens=*" %i in (comps.txt) do dsquery computer -name %i | dsmod computer -disabled yes

How to create user accounts from a list?

for /f "delims=, tokens=1,2" %i in (accs.txt) do dsadd user "CN=%i,OU=SERVICEACCOUNTS,DC=securesenses,DC=local" -display %i -samid %i -upn %i@securesenses.local -pwd %j -pwdneverexpires yes -canchpwd no

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x.509 Certificates - Critical vs non-critical extensions

Extensions are used to associate additional information with the user or the key. Each certificate extension has three attributes - extnID, critical, extnValue extnID - Extension ID - an OID that specifies the format and definitions of the extension critical - Critical flag - Boolean value extnValue - Extension value Criticality flag specifies whether the information in an extension is important. If an application doesn't recognize the extension marked as critical, the certificate cannot be accepted. If an extension is not marked as critical (critical value False) it can be ignored by an application. In Windows, critical extensions are marked with a yellow exclamation mark, View certificate extensions using OpenSSL: # openssl x509 -inform pem -in cert.pem -text -noout (output abbreviated) X509v3 extensions: X509v3 Key Usage: critical Digital Signature, Key Encipherment X509v3 Subject Key Identifier

DNS response and error types

In this post we explore common DNS response codes. We will cover the following responses: NOERROR SERVFAIL NXDOMAIN NODATA REFUSED Throughout article we’ll refer to the following RFCs: RFC 1034 - DOMAIN NAMES - CONCEPTS AND FACILITIES RFC 2308 - Negative Caching of DNS Queries (DNS NCACHE) RFC 2136 - Dynamic Updates in the Domain Name System (DNS UPDATE) RFC 8914 - Extended DNS Errors Response Codes - RCODEs The DNS RCODES are best defined in RFC2316 . They signify what type of response was sent by the server. “RCODE Response code - this four bit field is undefined in requests and set in responses.” The table below shows the summary of the currently defined RCODEs. Mnemonic Val Description NOERROR 0 No error condition.

Count number of lines - 'findstr'

How do I count number of lines in a command output? findstr /r/n "^" | find /c ":" Above commands will display number of lines output by whatever command (well, nearly whatever) you specify in the front. For example: C:\>ping localhost | findstr /r/n "^" | find /c ":" FINDSTR: // ignored 12 This comes handy if you want to find out how many OUs you have in Active Directory: dsquery ou -limit 0 | findstr /r/n "^" | find /c ":" How many user accounts there are: dsquery user -limit 0 | findstr /r/n "^" | find /c ":" Computers: dsquery computer -limit | findstr /r/n "^" | find /c ":"

#SecureSenses --verbose

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