IPFire Linux Firewall Gets Post-Quantum Cryptography Support for IPsec Tunnels
—@9to5linux
“This choice will ensure that modern cryptography is being used when available, but IPFire will remain compatible with older solutions from other vendors. Of course, you may enable this for existing tunnels on the advanced settings page of the tunnel”
https://9to5linux.com/ipfire-linux-firewall-gets-post-quantum-cryptography-support-for-ipsec-tunnels