Sunday, 1 April 2012

Checking SSL ciphers

Sometimes it is indispensably to test what ciphers are supported by SSL server. It can be done with openssl command. For example, we can try to connect to the site using LOW ciphers:
openssl s_client -connect site.com:443 -cipher LOW

To see what ciphers are included in the category:
openssl ciphers LOW -v 

Connect to service using SSLv2
openssl s_client -ssl2 -connect SERVERNAME:443
And in addition very useful link: OpenSSL Command-Line HOWTO

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