Differences between revisions 9 and 11 (spanning 2 versions)
Revision 9 as of 2019-11-15 18:36:05
Size: 1488
Editor: PieterSmit
Comment:
Revision 11 as of 2019-11-19 01:06:24
Size: 1573
Editor: PieterSmit
Comment:
Deletions are marked like this. Additions are marked like this.
Line 4: Line 4:
 * Online check cert + chain: https://tools.keycdn.com/ssl
Line 18: Line 19:
 * speed testing {{{
Line 22: Line 24:
}}}

OpenSSL Linux command line ssl tool

Verify a web server certificate

  • openssl s_client -showcerts -connect my.test.com:443
    • Output should end on "Verify return code: 0 (ok)"
    • As of 2017 the TLS Protocol should be TLSv1.2 at least.
  • For sni you can add -servername xyz.test.com

OpenSSL retrieve url

  • retrieve url, e.g. /healthz, note -ign_eof to wait for more input from echo

    time echo -e "GET /healthz HTTP/1.1\r\nConnection: close\r\nHost: pieter\r\n\r\n" | openssl s_client -ign_eof  -connect 172.24.0.3:443

SSL speed testing

  • speed testing

    openssl s_time -connect 172.17.0.2:443 -www "/welcome/"
    openssl s_time -connect 172.17.0.2:443 -www /
    
    curl -s -w 'Testing Website Response Time for :%{url_effective}\n\nLookup Time:\t\t%{time_namelookup}\nConnect Time:\t\t%{time_connect}\nPre-transfer Time:\t%{time_pretransfer}\nStart-transfer Time:\t%{time_starttransfer}\n\nTotal Time:\t\t%{time_total}\n' -o /dev/null https://172.17.0.2
  • slow

    231 connections in 0.29s; 796.55 connections/user sec, bytes read 57981
    231 connections in 31 real seconds, 251 bytes read per connection
  • fast

    30821 connections in 8.14s; 3786.36 connections/user sec, bytes read 6749799
    30821 connections in 31 real seconds, 219 bytes read per connection

httping

vigor: Linux/OpenSSL (last edited 2020-09-08 02:49:09 by PieterSmit)