https://support.mozilla.org/en-US/questions/786035#answer-142961
How to get an SSL client certificate into Firefox on Android. Copy cert9.db and key4.db from phone's SD card Androiddataorg.mozilla.firefoxfilesmozillaprofile.default to dir. Then `pk12util -i file.p12 -d sql:dir`
https://www.sslshopper.com/ssl-checker.html
A very useful SSL check utility which will support non standard port numbers. Useful for monit debugging on port 2812.