Digital Certificate Expiration Utility

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Date: Sat, 14 Aug 2004 19:53:34 -0400

Howdy,

Over the years, I have worked in numerous environments were an expired
digital certificate led to system outages, and user confusion. I decided
to write a tool to deal with this issue, and describe it's usage in this
months (September) issue of SysAdmin. The utility can be run to produce
certificate expiration info for a single ssl-enabled service, or given a
file with a list of domains:

$ ./ssl-cert-check -s mail.daemons.net -p 443

Host Status Expires Days Left
mail.daemons.net:443 Valid May 24 2005 282

$ cat ssldomains
mail.daemons.net 443
www.blatch.com 443

$ ./ssl-cert-check -b -f ssldomains

Host Status Expires Days Left
mail.daemons.net:443 Valid May 24 2005 282
www.blatch.com:443 Down ? ?

There is email integration to remind you electronically when
certificates are about to expire, and a quiet mode to allow easy
integration with cron. ssl-cert-check is licensed under the GPL,
and can be downloaded at:

http://www.daemons.net/~matty/code/ssl-cert-check

Please let me know if you run into problems or bugs.

Thanks,
- Ryan

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