C:\Users\kirihara>ssh -p 11111 88.88.88.88.napter.soracom.io -l atmark -v
OpenSSH_for_Windows_8.1p1, LibreSSL 3.0.2
debug1: Connecting to 88.88.88.88.napter.soracom.io [88.88.88.88] port 11111.
debug1: connect to address 88.88.88.88 port 11111: Connection timed out
ssh: connect to host 88.88.88.88.napter.soracom.io port 11111: Connection timed out

ポート番号とホストアドレスだけ変えてあります。