Syncthing install Ubuntu 20.4

curl -s https://syncthing.net/release-key.txt | sudo apt-key add -

echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list

sudo apt-get install apt-transport-https

sudo apt-get update

sudo apt-get install syncthing

sudo apt install daemonize

For WSL 2: (issue in admin Powershell)

netsh interface portproxy add v4tov4 listenport=22000 listenaddress=0.0.0.0 connectport=22000 connectaddress=xxx.xxx.xxx.xxx

netsh interface portproxy add v4tov4 listenport=21027 listenaddress=0.0.0.0 connectport=21027 connectaddress=xxx.xxx.xxx.xxx

connectaddress from ip addr in WSL 2. Open both ports for UDP and TCP in Defender.