ExecStart={{chisel_bin_location}}/chisel server {{ '--socks5' if chisel_server_socks5}} {{ '--reverse' if chisel_server_reverse}} {{ '--backend {}'.format(chisel_server_backend) if chisel_server_backend}} {{ '--auth {0}:{1}'.format(chisel_server_auth.user,chisel_server_auth.pass) if chisel_server_auth }}