Linux Mint + DefaultAction : "deny" = long black screen timeout when opening session ? about opensnitch

[linux-dummy]

Hi lainedfles,

thank you for the very fast answer.

You are absolutely right the error was not taking into account the IPv6.
Using regexp rule with "data": "^(127\.0\.0\.1|::1)$" solved the issue !

Thank you !

[lainedfles]

Hi,

Please read localhost-connections. Your attempted rules don't account for IPv6. The referenced document provides a sample rule (note the regular expression syntax including ::1):

{
  "created": "2023-07-05T10:46:47.904024069+01:00",
  "updated": "2023-07-05T10:46:47.921828104+01:00",
  "name": "000-aallow-localhost",
  "enabled": true,
  "precedence": true,
  "action": "allow",
  "duration": "always",
  "operator": {
    "type": "regexp",
    "operand": "dest.ip",
    "sensitive": false,
    "data": "^(127\\.0\\.0\\.1|::1)$",
    "list": []
  }
}

I also see that you've a simple deny rule for Avahi. This may be contributing to latency depending on your OS & network configuration. Perhaps removing or disabling Avahi is worth investigation.