I’ve found that the information that’s out there about email authentication is either too detailed or too high level. So I wanted to produce a quick guide for administrators that’s somewhere in between. We have three principle technologies at play. These technologies work together to provide an email security foundation. They are: Domain-based Message Authentication,…
This script gathers O365 license information for all active users. It will populate fields within a csv for import into Excel which includes UPN, Licenses, whether it is a shared mailbox or not and whether or not the user is blocked. A separate row will be created for each license, with the user’s UPN detailed…
In a recent post I described how I used Powershell to configure a dual-homed Radius server where I wanted to firewall everything on the DMZ interface but not affect the production interface. I did this using a Windows feature known as NLA – Network Location Awareness – which has been around in one form or…
It seems fairly obvious but a lot of people are unsure how to import a remote powershell session to O365. Simply do the following: [cc lang=”powershell”]$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection Import-PSSession $Session[/cc]
Recently I built an NPS server for Radius authentication, and had to dual home it with one NIC in the DMZ and one on the production network. I wanted to firewall everything on the DMZ interface but not affect the production interface. That way I could then allow the traffic I wanted to enable on…
This simple Powershell script will carry out a quick check against each IP in a 24 bit subnet and return a value of true or false dependent on whether or not it receives a reply. It’s similar to using an IP scanner or a ping script. [cc lang=”powershell”]$subnet = “10.20.6.” 1..254 | Foreach-Object {write-host “$Subnet$_…”…