Is 256bit SSL backwards compatiable with legacy 128bit?
Posted on 2014-02-25
I want to enable 256bit encryption which my SSL certificate is capable of for Windows 2008 R2 server. With IIS7 to do 256 bit encryption, we have to ensure the cipher suit that is listed first is the following: TLS_RSA_WITH_AES_256_CBC_SHA, if I do this will old browsers / systems still be able to connect with legacy 128bit?
I don't want to stop people who can only achieve 128bit from connecting and using the website. How can I ensure that the site is 256bit and 128bit compatible?