Avery Pennarun 85e675940d wgengine/filter: allow ICMP response packets. ... Longer term, we should probably update the packet filter to be fully stateful, for both TCP and ICMP. That is, only ICMP packets related to a session *we* initiated should be allowed back in. But this is reasonably secure for now, since wireguard is already trimming most traffic. The current code would not protect against eg. Ping-of-Death style attacks from VPN nodes. Fixes tailscale/tailscale#290. Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>		2020-04-29 05:25:45 -04:00
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packet.go	wgengine/filter: allow ICMP response packets.	2020-04-29 05:25:45 -04:00