Syntax error How to validate the IP address using PowerShell?

How to validate the IP address using PowerShell?

To validate the IP address using PowerShell, we can use several methods as shown below.

  • Using RegEx method.

  • Using Typecasting method.

Using TypeCasting method.

In this method, we are using System.Net method class IPAddress to validate the IP address.

[ipaddress]$IP = "192.168.0.1"

The above one is valid. Let’s check what $IP stores in.

PS C:\> $IP

Address : 16820416
AddressFamily : InterNetwork
ScopeId :
IsIPv6Multicast : False
IsIPv6LinkLocal : False
IsIPv6SiteLocal : False
IsIPv6Teredo : False
IsIPv4MappedToIPv6 : False
IPAddressToString : 192.168.0.1

The above one is Ipv4 and this method also works for IPv6. See the example below.

PS C:\> [ipaddress]"2001:0db8:85a3:0000:0000:8a2e:0370:7334"

Address :
AddressFamily : InterNetworkV6
ScopeId : 0
IsIPv6Multicast : False
IsIPv6LinkLocal : False
IsIPv6SiteLocal : False
IsIPv6Teredo : False
IsIPv4MappedToIPv6 : False
IPAddressToString : 2001:db8:85a3::8a2e:370:7334

You can notice the difference in AddressFamily property in both the address.

If we enter the wrong range of IP addresses.

PS C:\> [ipaddress]"192.168.0.256"
Cannot convert value "192.168.0.256" to type "System.Net.IPAddress". Error: "An invalid IP address was specified."
At line:1 char:1
+ [ipaddress]"192.168.0.256"
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [], RuntimeException
+ FullyQualifiedErrorId : InvalidCastParseTargetInvocation

It rejects the IP input. You can also use this method in function to validate the IP.

Updated on: 2021-02-19T12:59:09+05:30

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