Google has announced Chrome will start warning users who try to visit websites that still use sha1 signature algorithm to generate their SSL certificates.
You can of course use https://www.ssllabs.com/ssltest/analyze.html?d=$domain to test those sites available to the wild. For intranet though you need a different tool which happens to work of course also for external sites:
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# You should get sha256WithRSAEncryption below. If you get sha1WithRSAEncryption chrome will warn users when visiting $domain | |
echo | openssl s_client -connect $site:443 2>/dev/null | openssl x509 -text -noout | grep "Signature Algorithm" |
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