::fixture-ready::
$ ss -ltnp | grep ':22'
LISTEN 0      128          0.0.0.0:22        0.0.0.0:*     users:(("sshd",pid=801,fd=3))
::exit-code::0
$ ufw status numbered | grep '22/tcp'
[ 1] 22/tcp                     ALLOW IN    203.0.113.0/24
::exit-code::0
$ ss -ltnp | awk '$4 ~ /:22$/ && $4 !~ /^127[.]/ {print}'
LISTEN 0      128          0.0.0.0:22        0.0.0.0:*     users:(("sshd",pid=801,fd=3))
::exit-code::0