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tun_disabled: reply to ICMP Echo Request (#342)

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This change allows a server running with `tun.disabled: true` (usually
a lighthouse) to still reply to ICMP EchoRequest packets. This allows
you to "ping" the lighthouse Nebula IP as a quick check to make sure the
tunnel is up, even when running with tun.disabled.

This is still gated by allowing `icmp` packets in the inbound firewall
rules.
This commit is contained in:
Wade Simmons 2021-03-01 11:09:41 -05:00 • committed by GitHub
parent 27d9a67dda
commit a0583ebdca
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2 changed files with 108 additions and 11 deletions
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2
main.go
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@ -123,7 +123,7 @@ func Main(config *Config, configTest bool, buildVersion string, logger *logrus.L
switch {
case config.GetBool("tun.disabled", false):
tun = newDisabledTun(tunCidr, l)
tun = newDisabledTun(tunCidr, config.GetInt("tun.tx_queue", 500), config.GetBool("stats.message_metrics", false), l)
case tunFd != nil:
tun, err = newTunFromFd(
*tunFd,