[Python-Dev] which SSL client protocols work with which server protocols? (original) (raw)
Bill Janssen janssen at parc.com
Sat Sep 8 18:51:41 CEST 2007
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I've now built a framework in test_ssl to test all client protocols (SSL2, SSL3, SSL23, TLS1) against all server protocols, and here's what I've come up with. Servers are along the X axis, and clients are on the Y axis. "Yes" means that that client protocol can talk to that server protocol.
SSL2 SSL3 SS23 TLS1SSL2 yes no no no SSL3 yes yes yes no SSL23 no no yes no TLS1 no no yes yes
I'm a bit surprised by the facts that (1) an SSL2 client can't connect to an SSL23 server, and (2) an SSL23 client can only connect to an SSL23 server. Can anyone verify that these combos (the results of testing with the Python framework) are indeed to be expected?
Bill
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