How to set up L2TP/IPsec VPN on Fedora 34

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After checking here, I found a solution for my (similar) problem (connect with L2TP IPsec and PSK on Fedora 34).

Just:

  • Install missing libraries (xl2tpd, NetworkManager-l2tp, NetworkManager-l2tp-gnome)
  • In Network manager vpn options (“L2TP IPsec Options” > “Advanced”):
    • Check “Disable PFS”;
    • Specify these “Phase2 Algorithms”: “aes256-sha1,aes128-sha1,3des-sha1”.