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mirror of https://github.com/systemd/systemd-stable.git synced 2025-02-04 17:47:03 +03:00
Topi Miettinen 46c3b1ff88 core: firewall integration with DynamicUserNFTSet=
New directive `DynamicUserNFTSet=` provides a method for integrating
configuration of dynamic users into firewall rules with NFT sets.

Example:
```
table inet filter {
        set u {
                typeof meta skuid
        }

        chain service_output {
                meta skuid != @u drop
                accept
        }
}
```

```
/etc/systemd/system/dunft.service
[Service]
DynamicUser=yes
DynamicUserNFTSet=inet:filter:u
ExecStart=/bin/sleep 1000

[Install]
WantedBy=multi-user.target
```

```
$ sudo nft list set inet filter u
table inet filter {
        set u {
                typeof meta skuid
                elements = { 64864 }
        }
}
$ ps -n --format user,group,pid,command -p `pgrep sleep`
    USER    GROUP     PID COMMAND
   64864    64864   55158 /bin/sleep 1000
```
2022-06-08 16:12:25 +00:00
..
2019-03-11 14:11:28 +01:00
2022-05-16 00:25:18 +01:00