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[PR #3093] [client] Add stateful userspace firewall and remove egress filters #3606

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opened 2025-11-20 08:06:33 -05:00 by saavagebueno · 0 comments
saavagebueno commented 2025-11-20 08:06:33 -05:00
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Original Pull Request: https://github.com/netbirdio/netbird/pull/3093

State: closed
Merged: Yes

Describe your changes

  • Add stateful firewall functionality for UDP/TCP/ICMP in userspace firewalll
  • Removes all egress drop rules/filters, still needs refactoring so we don't add output rules to any chains/filters.
  • on Linux, if the OUTPUT policy is DROP then we don't do anything about it (no extra allow rules). This is up to the user, if they don't want anything leaving their machine they'll have to manage these rules explicitly.

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Checklist

  • Is it a bug fix
  • Is a typo/documentation fix
  • Is a feature enhancement
  • It is a refactor
  • Created tests that fail without the change (if possible)
  • Extended the README / documentation, if necessary
**Original Pull Request:** https://github.com/netbirdio/netbird/pull/3093 **State:** closed **Merged:** Yes --- ## Describe your changes - Add stateful firewall functionality for UDP/TCP/ICMP in userspace firewalll - Removes all egress drop rules/filters, still needs refactoring so we don't add output rules to any chains/filters. - on Linux, if the OUTPUT policy is DROP then we don't do anything about it (no extra allow rules). This is up to the user, if they don't want anything leaving their machine they'll have to manage these rules explicitly. ## Issue ticket number and link ### Checklist - [x] Is it a bug fix - [ ] Is a typo/documentation fix - [x] Is a feature enhancement - [ ] It is a refactor - [ ] Created tests that fail without the change (if possible) - [ ] Extended the README / documentation, if necessary
saavagebueno added the pull-request label 2025-11-20 08:06:33 -05:00
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Reference: SVI/netbird#3606
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