Common OpenSSL Commands
SSL Server Test
Certificate Decoder
Certificate and Key Matcher
OpenSSL CSR (& Private Key) Creator
Setup PGP
Why no Padlock
SecurityHeaders check
Set Cyphers in IIS
Bulk SSL site test
Imuniweb Compliance test
SSLYZE

docker run --rm -it nablac0d3/sslyze --regular sucuri.net:443 300m.com

Simple bash script to check expiry of long list of domains

#!/bin/bash

# Input file with a list of domains
input_file="domains.txt"

# Output file for storing the SSL certificate expiry dates
output_file="expiry.txt"

# Empty or create the output file if it doesn't exist
> $output_file

# Read the input file line by line (each line should contain one domain)
while IFS= read -r domain; do
    # Check the SSL certificate expiry date for the given domain using gnutls-cli
    expiry_date=$(echo | gnutls-cli --print-cert "$domain" 2>/dev/null | openssl x509 -enddate -noout | cut -d= -f2)

    # If there is an expiry date, convert it to a more readable format using gdate
    if [ -n "$expiry_date" ]; then
        formatted_expiry_date=$(gdate -d "$expiry_date" "+%Y-%m-%d")
        echo "$domain: $formatted_expiry_date" >> $output_file
    else
        echo "$domain: Unable to fetch certificate expiry date" >> $output_file
    fi
done < "$input_file"

echo "SSL certificate expiry dates have been saved to $output_file"