Irbe Krumina 9bd158cc09 cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658) ...

The AddSNATRuleForDst rule was adding a new rule each time it was called including:
- if a rule already existed
- if a rule matching the destination, but with different desired source already existed

This was causing issues especially for the in-progress egress HA proxies work,
where the rules are now refreshed more frequently, so more redundant rules
were being created.

This change:
- only creates the rule if it doesn't already exist
- if a rule for the same dst, but different source is found, delete it
- also ensures that egress proxies refresh firewall rules
if the node's tailnet IP changes

Updates tailscale/tailscale#13406

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

2024-10-03 20:15:00 +01:00

..

linuxfwtest

util/linuxfw: initial implementation of package

2023-02-09 14:20:24 -05:00

detector.go

util/linuxfw: fall back to nftables when iptables not found

2024-09-11 14:36:17 -07:00

fake.go

cmd/containerboot,cmd/k8s-operator: enable IPv6 for fqdn egress proxies (#12577)

2024-07-05 12:21:48 +01:00

helpers.go

util/slicesx: add FirstElementEqual and LastElementEqual

2024-09-11 18:36:00 -07:00

iptables_for_svcs_test.go

cmd/containerboot,kube,util/linuxfw: configure kube egress proxies to route to 1+ tailnet targets (#13531)

2024-09-29 16:30:53 +01:00

iptables_for_svcs.go

cmd/containerboot,kube,util/linuxfw: configure kube egress proxies to route to 1+ tailnet targets (#13531)

2024-09-29 16:30:53 +01:00

iptables_runner_test.go

cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)

2024-10-03 20:15:00 +01:00

iptables_runner.go

cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)

2024-10-03 20:15:00 +01:00

iptables.go

util/linuxfw: fall back to nftables when iptables not found

2024-09-11 14:36:17 -07:00

linuxfw_unsupported.go

all: cleanup unused code, part 2 (#10670)

2023-12-21 17:40:03 -08:00

linuxfw.go

all: add test for package comments, fix, add comments as needed

2024-07-10 09:57:00 -07:00

nftables_for_svcs_test.go

cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)

2024-10-03 20:15:00 +01:00

nftables_for_svcs.go

cmd/containerboot,kube,util/linuxfw: configure kube egress proxies to route to 1+ tailnet targets (#13531)

2024-09-29 16:30:53 +01:00

nftables_runner_test.go

cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)

2024-10-03 20:15:00 +01:00

nftables_runner.go

cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)

2024-10-03 20:15:00 +01:00

nftables_types.go

util/linuxfw: add new arch build constraints

2023-06-30 18:22:15 -04:00

nftables.go

util/cmpx: delete now that we're using Go 1.22

2024-02-07 18:10:15 -08:00