I changed the ssh configuration on both devices.

as root:

if you need, change the entry "PubkeyAuthentication no" in /etc/ssh/ssd_config" from no to yes.

generate the keys:

ssh-keygen -t rsa

copy the key:

cat .ssh/id_rsa.pub | ssh utcaadmin@10.131.169.110 'cat >> .ssh/authorized_keys'