[pve-devel] [PATCH proxmox-firewall v2 1/2] fix: firewall: apply `nt_conntrack_allow_invalid` to all chains

[Stefan Hanreich]

gave this a test on my machine:
* tested outgoing/incoming connectivity for guests
* tested DHCP in a simple zone
* checked generated firewall rulesets with setting on/off

small nit: settings is called nf_conntrack_allow_invalid, not
nt_conntrack_allow_invalid - maybe we could change that on commit?

consider this:
Tested-by: Stefan Hanreich <s.hanreich at proxmox.com>
Reviewed-by: Stefan Hanreich <s.hanreich at proxmox.com>

On 3/12/25 14:20, Hannes Laimer wrote:
> ... on the guest table. There is no reason to not repect that option
> on those two chains. These two were missed in the referenced commit.
> 
> Signed-off-by: Hannes Laimer <h.laimer at proxmox.com>
> Fixes: 64dc344b ("firewall: apply `nt_conntrack_allow_invalid` option to guest table")
> Tested-by: Stefan Hanreich <s.hanreich at proxmox.com>
> Reviewed-by: Stefan Hanreich <s.hanreich at proxmox.com>
> ---
> no changes since v1, so I kept @Stefans T-b and R-b
> 
>  proxmox-firewall/resources/proxmox-firewall.nft | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/proxmox-firewall/resources/proxmox-firewall.nft b/proxmox-firewall/resources/proxmox-firewall.nft
> index 2dd7c48..30f7b4f 100644
> --- a/proxmox-firewall/resources/proxmox-firewall.nft
> +++ b/proxmox-firewall/resources/proxmox-firewall.nft
> @@ -356,7 +356,7 @@ table bridge proxmox-firewall-guests {
>      }
>  
>      chain pre-vm-out {
> -        meta protocol != arp ct state vmap { established : accept, related : accept, invalid : drop }
> +        meta protocol != arp ct state vmap { established : accept, related : accept, invalid : jump invalid-conntrack }
>      }
>  
>      chain vm-out {
> @@ -384,7 +384,7 @@ table bridge proxmox-firewall-guests {
>  
>      chain before-bridge {
>          meta protocol arp accept
> -        meta protocol != arp ct state vmap { established : accept, related : accept, invalid : drop }
> +        meta protocol != arp ct state vmap { established : accept, related : accept, invalid : jump invalid-conntrack }
>      }
>  
>      chain forward {