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cmbuckley/san.sh

Last active October 27, 2017 10:35
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List the SAN extension domain names contained in an SSL cert on a given domain
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san.sh
#!/bin/bash
domain=$1
[[ $domain != *":"* ]] && domain="$domain:443"
openssl s_client -connect $domain 2>/dev/null </dev/null \
| openssl x509 -noout -text \
| grep -A1 'Subject Alternative Name:' \
| awk 'BEGIN{RS=",";FS=":"}{print $NF}'
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