Re: SSL handshake attack mitigation

2019-11-07 Thread Sergey Kandaurov
> On 6 Nov 2019, at 22:41, mogwai wrote: > > My first question is regarding the particular error log messages produced > during the attack - see example below: > > [info] 8050#8050: *146 SSL_do_handshake() failed (SSL: error:14094416:SSL > routines:ssl3_read_bytes:sslv3 alert certificate unkno

Re: SSL handshake attack mitigation

2019-11-06 Thread Sergey A. Osokin
Hi, On Wed, Nov 06, 2019 at 02:41:15PM -0500, mogwai wrote: > Greetings! > > I run a bunch of sites on nginx-plus-r19 (OpenSSL 1.0.2k-fips) and was > recently hit by a nasty DDoS SSL handshake attack. there are several techics are avaialble to mitigate DDoS attacks with NGINX and NGINX Plus, pl

Re: SSL handshake attack mitigation

2019-11-06 Thread lists
ginx.org Sent: November 6, 2019 11:41 AM To: nginx@nginx.org Reply-to: nginx@nginx.org Subject: SSL handshake attack mitigation Greetings! I run a bunch of sites on nginx-plus-r19 (OpenSSL 1.0.2k-fips) and was recently hit by a nasty DDoS SSL handshake attack. I noticed nginx worker proc

SSL handshake attack mitigation

2019-11-06 Thread mogwai
Greetings! I run a bunch of sites on nginx-plus-r19 (OpenSSL 1.0.2k-fips) and was recently hit by a nasty DDoS SSL handshake attack. I noticed nginx worker processes suddenly eating all available CPU and the "Handshakes failed" counter in the nginx plus dashboard suddenly climbing out of proporti