Set Proxy Server Settings in the PowerShell Profile File

pcbinary June 27, 2021 0 Comments

Troubleshooting network issues

When downloading from behind a proxy (which is common in some corporateenvironments), you might need to to explicitly specify the proxy that is thenused by Repo: export HTTP_PROXY=http://:@: export HTTPS_PROXY=http://:@: More rarely, Linux clients experience connectivity issues, getting stuck inthe middle of downloads (typically during receiving objects). It’s beenreported that tweaking the settings of the TCP/IP stack and using non-parallelcommands can improve the situation. You need root access to modify the TCPsetting: sudo sysctl -w net.ipv4.tcp_window_scaling=0 repo sync -j1

Set Proxy Server Settings in the PowerShell Profile File

You can create a PowerShell profile file to automatically set proxy settingswhen PowerShell starts.To do this, run the command that will create the PowerShell profile file(C:UsersusernameDocumentsWindowsPowerShellMicrosoft.PowerShell_profile.ps1):`notepad $PROFILE` (or `notepad $PROFILE.AllUsersCurrentHost` – if you need toapply a PowerShell profile to all users of the computer).A PowerShell profile is a PS script that runs when your PowerShell.exe processstarts.Copy your PowerShell code into the notepad window. For example, you are usingthe Proxy Auto-Configuration (PAC) files to automatically configure proxyserver settings on user computers. You can specify the URL address of the PACfile and authenticate on the proxy server under the current user with thefollowing PowerShell profile script.`[]::DefaultWebProxy =‘’)

Check Current Proxy Server Setting from PowerShell

You can get the current proxy settings from the registry with the PowerShellcommand:`Get-ItemProperty -Path’HKCU:SoftwareMicrosoftWindowsCurrentVersionInternet Settings’ | Select-Object ProxyServer, ProxyEnable`In my example, the address and port of the proxy server are: Proxy server enabled: ProxyEnable =1You can also get WebProxy settings like this:`[System.Net.WebProxy]::GetDefaultProxy()`If necessary, you can enable the use of proxy with the following command:`Set-ItemProperty -Path’HKCU:SoftwareMicrosoftWindowsCurrentVersionInternet Settings’ProxyEnable -value 1`To disable proxy: `Set-ItemProperty -Path’HKCU:SoftwareMicrosoftWindowsCurrentVersionInternet Settings’ProxyEnable -value 0`

RADIUS server and proxy

You can use NPS as a RADIUS server, a RADIUS proxy, or both.

Using NPS as a RADIUS server

You can use NPS as a RADIUS server when: * You are using an AD DS domain or the local SAM user accounts database as your user account database for access clients. * You are using Remote Access on multiple dial-up servers, VPN servers, or demand-dial routers and you want to centralize both the configuration of network policies and connection logging and accounting. * You are outsourcing your dial-up, VPN, or wireless access to a service provider. The access servers use RADIUS to authenticate and authorize connections that are made by members of your organization. * You want to centralize authentication, authorization, and accounting for a heterogeneous set of access servers.The following illustration shows NPS as a RADIUS server for a variety ofaccess clients.

RADIUS server and RADIUS proxy configuration examples

The following configuration examples demonstrate how you can configure NPS asa RADIUS server and a RADIUS proxy.NPS as a RADIUS server. In this example, NPS is configured as a RADIUS server,the default connection request policy is the only configured policy, and allconnection requests are processed by the local NPS. The NPS can authenticateand authorize users whose accounts are in the domain of the NPS and in trusteddomains.NPS as a RADIUS proxy. In this example, the NPS is configured as a RADIUSproxy that forwards connection requests to remote RADIUS server groups in twountrusted domains. The default connection request policy is deleted, and twonew connection request policies are created to forward requests to each of thetwo untrusted domains. In this example, NPS does not process any connectionrequests on the local server.NPS as both RADIUS server and RADIUS proxy. In addition to the defaultconnection request policy, which designates that connection requests areprocessed locally, a new connection request policy is created that forwardsconnection requests to an NPS or other RADIUS server in an untrusted domain.This second policy is named the Proxy policy. In this example, the Proxypolicy appears first in the ordered list of policies. If the connectionrequest matches the Proxy policy, the connection request is forwarded to theRADIUS server in the remote RADIUS server group. If the connection requestdoes not match the Proxy policy but does match the default connection requestpolicy, NPS processes the connection request on the local server. If theconnection request does not match either policy, it is discarded.NPS as a RADIUS server with remote accounting servers. In this example, thelocal NPS is not configured to perform accounting and the default connectionrequest policy is revised so that RADIUS accounting messages are forwarded toan NPS or other RADIUS server in a remote RADIUS server group. Althoughaccounting messages are forwarded, authentication and authorization messagesare not forwarded, and the local NPS performs these functions for the localdomain and all trusted domains.NPS with remote RADIUS to Windows user mapping. In this example, NPS acts asboth a RADIUS server and as a RADIUS proxy for each individual connectionrequest by forwarding the authentication request to a remote RADIUS serverwhile using a local Windows user account for authorization. This configurationis implemented by configuring the Remote RADIUS to Windows User Mappingattribute as a condition of the connection request policy. (In addition, auser account must be created locally on the RADIUS server that has the samename as the remote user account against which authentication is performed bythe remote RADIUS server.)

Configure RADIUS server

To configure NPS as a RADIUS server, you must configure RADIUS clients,network policy, and RADIUS accounting.For instructions on making these configurations, see the following topics.

Enable the NPS role on a domain-joined server

The NPS server connects to Azure Active Directory and authenticates the MFArequests. Choose one server for this role. We recommend choosing a server thatdoesn’t handle requests from other services, because the NPS extension throwserrors for any requests that aren’t RADIUS. The NPS server must be set up asthe primary and secondary authentication server for your environment; itcannot proxy RADIUS requests to another server. 1. On your server, open the Add Roles and Features Wizard from the Server Manager Quickstart menu. 2. Choose Role-based or feature-based installation for your installation type. 3. Select the Network Policy and Access Services server role. A window may pop up to inform you of required features to run this role. 4. Continue through the wizard until the Confirmation page. Select Install.Now that you have a server designated for NPS, you should also configure thisserver to handle incoming RADIUS requests from the VPN solution.

Configure your VPN solution to communicate with the NPS server

Depending on which VPN solution you use, the steps to configure your RADIUSauthentication policy vary. Configure this policy to point to your RADIUS NPSserver.

Determine which authentication methods your users can use

There are two factors that affect which authentication methods are availablewith an NPS extension deployment: 1. The password encryption algorithm used between the RADIUS client (VPN, Netscaler server, or other) and the NPS servers. * PAP supports all the authentication methods of Azure MFA in the cloud: phone call, one-way text message, mobile app notification, OATH hardware tokens, and mobile app verification code. * CHAPV2 and EAP support phone call and mobile app notification.NoteWhen you deploy the NPS extension, use these factors to evaluate which methodsare available for your users. If your RADIUS client supports PAP, but theclient UX doesn’t have input fields for a verification code, then phone calland mobile app notification are the two supported options.In addition, if your VPN client UX does support input field and you haveconfigured Network Access Policy – the authentication might succeed, howevernone of the RADIUS attributes configured in the Network Policy will be appliedto neither the Network Access Device, like the RRAS server, nor the VPNclient. As a result, the VPN client might have more access than desired orless to no access. 2. The input methods that the client application (VPN, Netscaler server, or other) can handle. For example, does the VPN client have some means to allow the user to type in a verification code from a text or mobile app?You can disable unsupported authentication methods in Azure.

Configure the Access Server

This section describes how to configure the Microsoft Access server.

Configure the Access Server

This section describes how to configure the Microsoft Access server.

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