The script can help you proxy wsl2 ssh service.

wsl-sshd-proxy.ps1

# define proxy address
$addr='0.0.0.0';
$port=22222

# Get wsl2 ip addres
$wsl_ip_all = wsl.exe hostname -I
$wsl_ip = $wsl_ip_all.Split(" ")[0]
$wsl_ssh_port = 22222


# Ensure ssh service started
echo "========================= Start wsl sshd... ========================="
wsl.exe -e sudo service ssh --full-restart


echo "========================= Start portproxy... ========================="
netsh interface portproxy add v4tov4 listenport=$port listenaddress=$addr connectport=$wsl_ssh_port connectaddress=$wsl_ip
echo " * port is $wsl_ssh_port"
echo " * addr is $wsl_ip"