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@gwen001
Created May 11, 2020 19:21
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get altnames from ssl certificates
function sslsub() {
timeout 3 openssl s_client -showcerts -servername $1 -connect $1:443 <<< "Q" 2>/dev/null | openssl x509 -text -noout | grep DNS | tr ',' '\n' | cut -d ':' -f 2 | sort -fu
}
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