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Forward ports 8000–8002 UDP to the IP address of your host computer. You can find detailed steps on the Parsec Port Forwarding Guide . 4. Bypass Restrictive ISPs with a VPN
Log into your ISP modem's configuration page and toggle it into Bridge Mode or IP Passthrough . This passes the public IP address directly to your secondary router. Bypassing Carrier-Grade NAT (CG-NAT)
: Run a high-performance VPN supporting peer-to-peer split tunneling or dedicated port forwarding on both devices. This encapsulates the UDP data stream, safely guiding it past carrier-level filtering layers. Tailoring Complex Firewalls (pfSense / OPNsense) 6023 parsec error exclusive
When you see Error 6023, the Parsec signaling server has successfully authenticated both machines, but the local network hardware or the ISP has blocked the direct path between them. Step-by-Step Fixes for Error 6023 1. Configure Local Firewalls
If your ISP uses CGNAT (common for Starlink, T-Mobile Home Internet, or cellular routers), port forwarding is impossible. You will need to request a public IPv4 address from your ISP to solve the 6023 exclusive error. Forward ports 8000–8002 UDP to the IP address
If hosting or connecting from a Mac running recent versions like macOS Sequoia, navigate to System Settings > Privacy & Security > Local Network and explicitly toggle the switch to allow Parsec. 2. Enable UPnP or Configure Manual Port Forwarding
Fix 6023 Parsec Error: Ultimate Network & P2P Troubleshooting Guide Bypass Restrictive ISPs with a VPN Log into
: Verify that the UPnP toggle inside the Parsec application settings is also enabled. 3. Resolving Double NAT and CGNAT Restraints
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: The router cannot automatically open the ports required for the connection. Exclusive Input Interference Exclusive Input Mode