Re: Disable SSL/TLS renegotiation

2018-07-11 Thread viktor . schneider
It seems I misremebered, post-STARTTLS renegotiation is not subjected to anvil rate limits. I'd need to find the right OpenSSL callback to hook into the server processing of client TLS HELLO requests and turn them down if the rate is too high. This is not presently implemented. Maybe it would

Re: Disable SSL/TLS renegotiation

2018-07-11 Thread Viktor Dukhovni
On Wed, Jul 11, 2018 at 10:04:30AM -0400, Viktor Dukhovni wrote: > On Wed, Jul 11, 2018 at 03:27:05PM +0200, Viktor Schneider wrote: > > > While checking the SSL configuration of a Postfix server, I noticed that > > so-called "Client-initiated secure renegotiation" is available at > > Postfix b

Re: Disable SSL/TLS renegotiation

2018-07-11 Thread Viktor Dukhovni
On Wed, Jul 11, 2018 at 03:27:05PM +0200, Viktor Schneider wrote: > While checking the SSL configuration of a Postfix server, I noticed that > so-called "Client-initiated secure renegotiation" is available at > Postfix by default. > You can verify it with following openssl command and press "R"

Disable SSL/TLS renegotiation

2018-07-11 Thread Viktor Schneider
Hello postfix-users, While checking the SSL configuration of a Postfix server, I noticed that so-called "Client-initiated secure renegotiation" is available at Postfix by default. You can verify it with following openssl command and press "R" once the connection is successfully established: