[hofrogs]

Be careful when installing Yggdrasil Network on your device - your device address will be available in a network/peer explorers and if your firewall is not configured to reject incoming connections from the yggdrasil ipv6 interface - your locally running services could get exposed.

[neilalexander]

Should be noted that this does not apply if you install Yggmail only without mainline Yggdrasil, as Yggmail embeds its own node and does not use TUN.

[preisschild]

this should be standard advise, always configure your host firewall correctly. Especially if you use something like ArchLinux where it doesn't come pre-configured