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Showing posts with label PCT. Show all posts
Showing posts with label PCT. Show all posts

Monday, 19 September 2011

How to disable PCT 1.0 and SSL 2.0 in IIS

IIS stores information about different security-enhanced channel protocols in the following registry key:

HKey_Local_Machine\System\CurrentControlSet\Control\SecurityProviders \SCHANNEL\Protocols

Typically, this key contains the following subkeys:

• PCT 1.0
• SSL 2.0
• SSL 3.0
• TLS 1.0

To disable a protocol, create a new DWORD value in the server subkey of the protocol. Set the DWORD value to "00 00 00 00". Reboot the server for changes to take effect.