Usefull sysadmin stuff
I'm working as a sysadmin/Application Engineer/Application Manager/DevOps Engineer (yeah, buzzwords, I know) for a number of years now and there I learn a lot of cool and handy stuff which I want to share for the benefit of others.Check available security ciphers
#!/usr/bin/env bash
# OpenSSL requires the port number.
SERVER=$1
DELAY=1
ciphers=$(openssl ciphers 'ALL:eNULL' | sed -e 's/:/ /g')
echo Obtaining cipher list from $(openssl version).
for cipher in ${ciphers[@]}
do
echo -n Testing $cipher...
result=$(echo -n | openssl s_client -cipher "$cipher" -connect $SERVER
2>&1)
if [[ "$result" =~ ":error:" ]] ; then
error=$(echo -n $result | cut -d':' -f6)
echo NO \($error\)
else
if [[ "$result" =~ "Cipher is ${cipher}" || "$result" =~ "Cipher :" ]] ; then
echo YES
else
echo UNKNOWN RESPONSE
echo $result
fi
fi
sleep $DELAY
done
Usage: ./script.sh example.com:443
Credits go to Romeo Ninov and indiv. Script taken from https://superuser.com.