: For outgoing connections, Windows 11 uses a default dynamic range of 49152 to 65535 Firewall Profiles : Rules can be applied to three specific network profiles: (workplace), (trusted home networks), and (untrusted spots like coffee shops). Microsoft Support Commonly Used & Pre-configured Ports Description HTTP / HTTPS Standard web traffic; 443 is encrypted. SMB (File Sharing) Used for file and printer sharing. Used for client-server communication. Resolves domain names to IP addresses. Remote Desktop Protocol for remote access. Managing Ports in Windows 11

TCP 0.0.0.0:135 0.0.0.0:0 LISTENING 1234 TCP [::]:445 [::]:0 LISTENING 4

: Before disabling services or deleting firewall rules, ensure you have a system restore point or backup. This allows you to recover if something breaks.

For legacy compatibility, you can revert to the older range (1024–5000), but modern Windows uses the IANA-recommended range.

Windows 11 (and Windows Server 2019+) uses a default ephemeral port range of . You can check this with:

In a default Windows 11 environment, the following ports are typically found in a "listening" state, awaiting inbound connections.

: Windows allows different firewall rules for Domain, Private, and Public networks. Configure stricter rules for Public networks (coffee shops, airports) and more permissive ones for your Private home network.