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ipn/ipnlocal,wgengine/router,cmd/tailscale: add flag to allow local lan access when routing traffic via an exit node.

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For #1527

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2021-04-08 15:56:51 -07:00
committed by Maisem Ali
parent 854d5d36a1
commit 1b9d8771dc
8 changed files with 261 additions and 103 deletions
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48
wgengine/router/router_linux_test.go
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@@ -280,6 +280,54 @@ v6/filter/ts-forward -o tailscale0 -j ACCEPT
v6/nat/POSTROUTING -j ts-postrouting
`,
},
{
name: "addr, routes, and local routes with netfilter",
in: &Config{
LocalAddrs: mustCIDRs("100.101.102.104/10"),
Routes: mustCIDRs("100.100.100.100/32", "0.0.0.0/0"),
LocalRoutes: mustCIDRs("10.0.0.0/8"),
NetfilterMode: netfilterOn,
},
want: `
up
ip addr add 100.101.102.104/10 dev tailscale0
ip route add 0.0.0.0/0 dev tailscale0 table 52
ip route add 100.100.100.100/32 dev tailscale0 table 52
ip route add throw 10.0.0.0/8 table 52` + basic +
`v4/filter/FORWARD -j ts-forward
v4/filter/INPUT -j ts-input
v4/filter/ts-forward -i tailscale0 -j MARK --set-mark 0x40000
v4/filter/ts-forward -m mark --mark 0x40000 -j ACCEPT
v4/filter/ts-forward -o tailscale0 -s 100.64.0.0/10 -j DROP
v4/filter/ts-forward -o tailscale0 -j ACCEPT
v4/filter/ts-input -i lo -s 100.101.102.104 -j ACCEPT
v4/filter/ts-input ! -i tailscale0 -s 100.115.92.0/23 -j RETURN
v4/filter/ts-input ! -i tailscale0 -s 100.64.0.0/10 -j DROP
v4/nat/POSTROUTING -j ts-postrouting
v6/filter/FORWARD -j ts-forward
v6/filter/INPUT -j ts-input
v6/filter/ts-forward -i tailscale0 -j MARK --set-mark 0x40000
v6/filter/ts-forward -m mark --mark 0x40000 -j ACCEPT
v6/filter/ts-forward -o tailscale0 -j ACCEPT
v6/nat/POSTROUTING -j ts-postrouting
`,
},
{
name: "addr, routes, and local routes with no netfilter",
in: &Config{
LocalAddrs: mustCIDRs("100.101.102.104/10"),
Routes: mustCIDRs("100.100.100.100/32", "0.0.0.0/0"),
LocalRoutes: mustCIDRs("10.0.0.0/8", "192.168.0.0/24"),
NetfilterMode: netfilterOff,
},
want: `
up
ip addr add 100.101.102.104/10 dev tailscale0
ip route add 0.0.0.0/0 dev tailscale0 table 52
ip route add 100.100.100.100/32 dev tailscale0 table 52
ip route add throw 10.0.0.0/8 table 52
ip route add throw 192.168.0.0/24 table 52` + basic,
},
}
fake := NewFakeOS(t)