TLS Fingerprinting - a method for identifying a TLS client without decrypting
Published Dec 30, 2016
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While
regsub {(.)A\1A} ${exte} "" exte
is fine in CLI, BIG-IP's TCL complains about this:
warning: ["\1" has no meaning. Did you mean "\\1" or "1"?][{(.)A\1A}]