multi factor – Should I propose MFA? Any n or & # 39; or & # 39; n Random & # 39; in my web application, or simply 'All MFA'.

I am building a new web application and am currently working on the multifactor authentication part. I would like to offer a choice in MFA and I think about what I can do. I have a plan, but I'm afraid that two of the options I think I propose are safer, but in reality, they are less so than the basic option.

When creating MFA on the account, I was thinking of a form similar to ((...) represents a form field):

In addition to every login, require MFA every (d) days.
Require (All | Any n | n Random) factors, where n is (f)

Requiring the entire MFA is certainly the safest, but remains Any n or n Random better or worse than All MFA with one factor in less?

For example, there are 2 factors for which you do not know which one will be asked less than 1 factor for which you will always be asked. Is this also true for 3 factors, where 2 random factors will be required, as opposed to 2 factors still needed?

This certainly adds additional obstacles from the point of view of the need to obtain additional codes, but you can also continue to try (with delay) until the correct code is requested. so the problem may not be so difficult.

On the other hand, if I guess / brute force, I have a better chance of doing things right if I do not have to take into account all the factors. With the Any 1 of 2 factors For example, I've doubled my chances of guessing it because it can match one or the other of the factors.

Should I have All MFA, or should I also show the other options?

Thank you!

Using PowerShell to connect to Project Online with CSOM under MFA

I'm trying to interact with a PWA on a tenant for which I have no choice but to use MFA. I'm trying to use the OfficeDev-PnP library that supports MFA, but I can not get it to work with Project Online.

This works, but does not support MFA

$siteURL = "https://mytenant.sharepoint.com/sites/pwa"
$username = "my.name@mytenant.onmicrosoft.com"
$password = Read-Host -Prompt "Enter password" -AsSecureString
$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $password)
# Create & configure a client context connection
$pctx.Credentials = $credentials
# ...load stuff
$pctx.ExecuteQuery()

This uses Office Dev PnP to get a user-friendly authentication context for MFA, but does not work (I get a 403 on the $pctx.ExecuteQuery())

$authmgr = new-object OfficeDevPnp.Core.AuthenticationManager
$pctx = New-Object Microsoft.ProjectServer.Client.ProjectContext($siteUrl)
$pctx.Credentials = $authmgr.GetWebLoginClientContext($siteURL).Credentials
# ...load stuff
$pctx.ExecuteQuery()

This last method works well for SharePointContext SharePoint Online. Maybe the problem is that $authmgr.GetWebLoginClientContext($siteURL) returns a ClientContext, not a ProjectContext.

modifications:

  • By Gautam's suggestion, try to make $pctx = $authmgr.GetWebLoginClientContext($siteURL): This fails when running a query to load projects, with the Can not find an overload for "Load" and the number of arguments: "1" message. Here, I think $ pctx does not know that it is supposed to be a ProjectContext and is still a ClientContext (so nothing has been done by the CSOM ProjectServer).

To be complete, here is the complete code that I have tried here:

# Load libraries
$PNPPath = "C:PathToPnP"
Add-Type –Path "$PNPPathMicrosoft.SharePoint.Client.dll"
Add-Type –Path "$PNPPathMicrosoft.SharePoint.Client.Runtime.dll"
Add-Type -Path "$PNPPathMicrosoft.ProjectServer.Client.dll"
Add-Type -Path "$PNPPathOfficeDevPnP.Core.dll"

# do stuff
$siteURL = "https://mytenant.sharepoint.com/sites/pwa"
$authmgr = New-Object OfficeDevPnp.Core.AuthenticationManager
$pctx = $authmgr.GetWebLoginClientContext($siteURL)    
$projects = $pctx.Projects
$pctx.Load($projects)
$pctx.ExecuteQuery()
  • I've also tried converting the ClientContext directly to a ProjectContext $pctx = (Microsoft.ProjectServer.Client.ProjectContext)$authmgr.GetWebLoginClientContext($siteURL) but that also fails, with a Can not convert … Fault.

multi factor – Azure AD – How to allow MFA configuration only from a trusted network?

I hope someone like an idea …

In Azure AD, how can we allow a user to configure MFA but only allow this configuration on a trusted network? We have defined trusted networks, but everything we have tried does not prevent the configuration of MFA from outside these trusted networks.

For example, if I set MFA to On, how can I prevent the user from setting it up at home and forcing it from the desktop.

Thank you

development – How to connect an Office 365 site having MFA with the help of C #

I need to connect the Office 365 site with the help of a console application (C #). but the problem is that the tenant of office 365 has MFA (Multi-factor authentication) authentication. How can I connect to a specific site collection using C #?

Has anyone ever worked on a console application to connect Office 365 with MFA enabled?

MFA Bypass for Attached Devices Azure AD Hybrid and Intune

I'm trying to create a conditional access strategy that avoids MFA for devices attached to Hybrid AD or devices registered in Intune. I have followed these 2 articles with regard to the correct settings:

https://www.itpromentor.com/unmanaged-mfa/
https: //practical365.com/security/azure-active-directory-conditional-access-enforce-multi-factor-aut …

The strategy appears to work for mobile apps and desktop client applications, but not for https://portal.office.com web applications. On the Conditional Policy, I do not see any Office 365 portal options to include as a cloud application. I am therefore prompted to enter MFA when I launch the Outlook Web application. In addition, it also disables Office Web applications. Is there a fix for this?

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multi factor – What are the risks when you use QR to authenticate when you use MFA offline in cases where the network is unavailable due to a network failure

if the PingID service is inaccessible, the user will receive a QR code on an offline authentication screen. in the case of an offline MFA when the network is unavailable due to a network failure (for example in an airplane or when network reception is poor) or a similar problem, I wondered what the possible risks were exposed here.

Nautilus – Server connection – SSH with MFA

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