[libvirt] Connecting with a remote libvirt

Hello i'm trying to connect with a remote libvirt. The option I selected was tcp because it's a development environment and a secure and isolated network, I've configured listen_tcp = 1 tcp_port = "16509" in libvirtd.conf at the destition. I've tried to connect to host "santacruz" from a remote host "aoniken" and locally but pn both cases I've got: REMOTE marcela@aoniken:~$ virsh -c qemu+tcp://santacruz:16509 list error: unable to connect to libvirtd at 'santacruz': Connection refused error: failed to connect to the hypervisor LOCALLY radic@santacruz:/etc/libvirt$ virsh -c qemu+tcp://santacruz:16509 list error: unable to connect to libvirtd at 'santacruz': Connection refused error: failed to connect to the hypervisor I've try to use ssh but i've got an error two on both cases. REMOTE (SSH) marcela@aoniken:~$ virsh -c qemu+ssh://radic@santacruz list radic@santacruz's password: error: internal error no QEMU URI path given, try qemu:///system error: failed to connect to the hypervisor marcela@aoniken:~$ radic@santacruz:/etc/libvirt$ virsh -c qemu+ssh://radic@santacruz list radic@santacruz's password: error: internal error no QEMU URI path given, try qemu:///system error: failed to connect to the hypervisor Can you help me? Thank you