PSK requires Stunnel version 5.09 or higher. For an example of setting up authentication using PSK, see ttps://www.stunnel.org/auth.html. The minimum PSK key length is 20 chars. Change PSK key file owner and
group to ‘uptimeagent’, e.g.:
Use the following steps to enable PSK for Agents.
chown uptimeagent /opt/uptime-agent/conf/psk.txt
chgrp uptimeagent /opt/uptime-agent/conf/psk.txt
Example of Stunnel configuration for the PSK support:
exec = /opt/uptime-agent/bin/uptimeagent
options = NO_SSLv2
options = NO_SSLv3
options = NO_TLSv1
options = NO_TLSv1.1
ciphers=PSK
PSKsecrets=/opt/uptime-agent/conf/psk.txt
PSKidentity=test1
Content of /opt/uptime-agent/conf/psk.txt:
test1:qqtest11qqtest11qqtest11
2. Enable option ‘Use TLS-PSK’ or corresponding options in Global Credentials Settings when adding Agents in
Monitoring Station.