RPC GPO information

Glenn Maxwell 11,316 Reputation points
2024-09-22T21:36:10.0033333+00:00

Hi All

I have been asked to enable the following printer-related GPOs, but I am not fully aware of their impact. Could anyone help me understand the pros and cons of these settings? The last one i dont think its printer related but i need information on that as well.


Computer Configuration-->Policies-->Administrative Templates-->Printers-->Configure Redirection Guard:Enabled: Redirection Guard Enabled

Computer Configuration-->Policies-->Administrative Templates-->Printers-->Configure RPC connection settings: Protocol to use for outgoing RPC connections:Enabled: Redirection Guard Enabled

Computer Configuration-->Policies-->Administrative Templates-->Printers-->Configure RPC connection settings: Use authentication for outgoing RPC connections: Enabled: Default

Computer Configuration-->Policies-->Administrative Templates-->Printers-->Configure RPC listener settings: Configure protocol options for incoming RPC connections: Enabled: RPC over TCP

Computer Configuration-->Policies-->Administrative Templates-->Printers-->Configure RPC listener settings: Configure protocol options for incoming RPC connections: Enabled: Negotiate or higher

Computer Configuration-->Policies-->Administrative Templates-->Printers-->Configure RPC over TCP port: Enabled: 0

Computer Configuration-->Policies-->Administrative Templates-->MS Security Guide-->Configure RPC packet level privacy setting for incoming connections:Enabled
Windows Server 2019
Windows Server 2019
A Microsoft server operating system that supports enterprise-level management updated to data storage.
3,732 questions
Windows Server 2016
Windows Server 2016
A Microsoft server operating system that supports enterprise-level management updated to data storage.
2,500 questions
Windows Server
Windows Server
A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.
13,016 questions
Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
6,496 questions
Windows Server Printing
Windows Server Printing
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Printing: Printer centralized deployment and management, scan and fax resources management, and document services
675 questions
0 comments
Accepted answer
  1. Yanhong Liu 9,070 Reputation points Microsoft Vendor
    2024-09-24T02:19:18.9766667+00:00

    Hello,

    Based on your description, here are each Group Policy Object (GPO) setting you provided and its potential advantages and disadvantages.

    1. Configure Redirection Guard: Enabled

    Pros:

    Enhances security by preventing attacks that rely on printer redirection, such as unwanted or unauthorized printing of sensitive documents.

    Cons:

    May cause issues with legitimate printer redirection scenarios, such as those used in Remote Desktop or Virtual Desktop Infrastructure (VDI) environments.

    1. Configure RPC connection settings: Protocol to use for outgoing RPC connections: Enabled: Redirection Guard Enabled

    Pros: By specifying a protocol for outgoing RPC connections, you can standardize and potentially secure the communication between client and printer servers.

    Cons: If the specified protocol is not supported or misconfigured, it could result in connectivity issues.

    1. Configure RPC connection settings: Use authentication for outgoing RPC connections: Enabled: Default

    Pros:

    Increases security by requiring authentication for outgoing RPC connections, helping to prevent unauthorized access.

    Cons:

    May introduce overhead or compatibility issues if certain services or applications do not support authenticated RPC connections.

    1. Configure RPC listener settings: Configure protocol options for incoming RPC connections: Enabled: RPC over TCP

    Pros:

    Standardizes incoming RPC connections to use TCP, which can be more reliable and easier to troubleshoot than other protocols.

    Cons:

    Limits flexibility if applications or services expect to use different protocols for RPC.

    1. Configure RPC listener settings: Configure protocol options for incoming RPC connections: Enabled: Negotiate or higher

    Pros:

    Ensures a higher level of security by negotiating the best available security protocol for incoming RPC connections.

    Cons:

    Potential increase in resource usage and possible compatibility issues with older applications that do not support advanced negotiation mechanisms.

    1. Configure RPC over TCP port: Enabled: 0

    Pros:

    Setting the port to 0 allows the system to dynamically allocate ports for RPC over TCP, which can simplify management and avoid port conflicts.

    Cons:

    Dynamically allocated ports can be harder to manage and monitor, making it more challenging to troubleshoot connectivity issues.

    1. MS Security Guide: Configure RPC packet-level privacy setting for incoming connections: Enabled

    Pros:

    Enhances security by ensuring that incoming RPC connections use packet-level privacy, which helps to protect data integrity and confidentiality.

    Cons:

    Can introduce additional overhead and complexity, possibly affecting performance or compatibility with older systems.

    I hope the information above is helpful.

    Best Regards,

    Yanhong Liu

    ============================================

    If the Answer is helpful, please click "Accept Answer" and upvote it.

    0 comments

0 additional answers

Sort by: Most helpful
Most helpful Newest Oldest

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.