PowerShell creates PTR reverse query for existing DNS records

This morning the bean accidentally found that the company's DNS server above only the forward parsing, and there is no corresponding PTR record. In other words, the IP address can be resolved by the domain name, but the reverse IP address is not able to find the domain name.

1 hours wrote a very simple script, to determine whether there are existing records of the corresponding reverse zone and PTR records, if not, automatically create a plus for me.

The idea is simple, the script is also relatively rough, there is no fault-tolerant processing and optimization, but the implementation of the function is good.

$ptrzones =get-dnsserverzone -computername syddc01 | where-object {$_.zonename - like  "*.arpa"} #获取所以的A记录 $machines =get-dnsserverresourcerecord -computername syddc01 -rrtype  A -ZoneName  ' omnicom.com.au ' | select @{n= ' IP '; e={$_.recorddata. ipv4address.ipaddresstostring}}, hostname, timestamp, @{n= ' Ptrzone '; e={$temp =$_.recorddata. IPV4Address.IPAddressToString.split ('. '); $t = $temp [2]+ '. ' + $temp [1]+ '. ' + $temp [0]+ '. In-addr.arpa '; $t}}foreach ($machine  in  $machines) {    # Determine if there is a reverse zone  write-host  $machine .hostname  write-host  $machine of PTR. ptrzone    $flag =0  foreach ($p  in  $ptrzones) {    if ($ p.zonename -eq  $machine. Ptrzone) {         #write-host  " matched ptr zone"  -backgroundcolor cyan         $flag =1        break         }    }   #如果PTR  zone does not exist, create a corresponding   if ($flag  - eq 0) {    write-host  " ptrzone is missing,a new ptrzone  will be created " -ForegroundColor Red     $temp = $machine. Ip. Split ('. ')      $range = $temp [0]+ '. ' + $temp [1]+ '. ' + $temp [2]+ ". 0/24"     # $range     add-dnsserverprimaryzone - dynamicupdate secure -networkid  $range  -replicationscope domain -computername  syddc01  }  else{       #如果PTR  zone exist, Determine if there is a corresponding PTR record      $hname =get-dnsserverresourcerecord -computername syddc01  -rrtype ptr -zonename  $machine. Ptrzone | select @{n= ' nAme '; e={$_.recorddata.ptrdomainname}}    # $hname      $temp = "*" +$ Machine.hostname+ "*"     if ($hname  -like  $temp) {                Write-Host  "Already exist"  - foregroundcolor cyan        }    else{          #PTR  zone exists   but PTR records do not exist          Write-Host  "Adding ptr record"  -ForegroundColor Yellow         add-dnsserverresourcerecordptr -computername syddc01 -zonename   $machine. ptrzone -name  $machine. Ip. Split ('. ') [3] -allowupdateany -timetolive 01:00:00 -agerecord -ptrdomainname $ Machine.hostname     }    }      } 

Execute script

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Results

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This article is from the "Mapo Tofu" blog, please be sure to keep this source http://beanxyz.blog.51cto.com/5570417/1875747

PowerShell creates PTR reverse query for existing DNS records