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various: implement stateful firewalling on Linux (#12025)

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Updates https://github.com/tailscale/corp/issues/19623


Change-Id: I7980e1fb736e234e66fa000d488066466c96ec85

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Co-authored-by: Andrew Dunham <andrew@du.nham.ca>
This commit is contained in:
Andrew Lytvynov
2024-05-06 15:22:17 -07:00
committed by GitHub
parent 5ef178fdca
commit c28f5767bf
17 changed files with 632 additions and 47 deletions
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9
util/linuxfw/fake.go
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@ -85,6 +85,15 @@ func (n *fakeIPTables) Delete(table, chain string, args ...string) error {
}
}
func (n *fakeIPTables) List(table, chain string) ([]string, error) {
k := table + "/" + chain
if rules, ok := n.n[k]; ok {
return rules, nil
} else {
return nil, fmt.Errorf("unknown table/chain %s", k)
}
}
func (n *fakeIPTables) ClearChain(table, chain string) error {
k := table + "/" + chain
if _, ok := n.n[k]; ok {