openssl s_client using a proxy

Question

openssl s_client -connect some.https.server:443 -showcerts

is a nice command to run when you want to inspect the server\'s certificates and its cer

Answer 1

since openssl v1.1.0

C:\openssl>openssl version
OpenSSL 1.1.0g  2 Nov 2017
C:\openssl>openssl s_client -proxy 192.168.103.115:3128 -connect www.google.com -CAfile C:\TEMP\internalCA.crt
CONNECTED(00000088)
depth=2 DC = com, DC = xxxx, CN = xxxx CA interne
verify return:1
depth=1 C = FR, L = CROIX, CN = svproxysg1, emailAddress = xxxx@xxxx.xx
verify return:1
depth=0 C = US, ST = California, L = Mountain View, O = Google Inc, CN = www.google.com
verify return:1
---
Certificate chain
 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=www.google.com
   i:/C=xxxx/L=xxxx/CN=svproxysg1/emailAddress=xxxx@xxxx.xx
 1 s:/C=xxxx/L=xxxx/CN=svproxysg1/emailAddress=xxxx@xxxx.xx
   i:/DC=com/DC=xxxxx/CN=xxxxx CA interne
---
Server certificate
-----BEGIN CERTIFICATE-----
MIIDkTCCAnmgAwIBAgIJAIv4/hQAAAAAMA0GCSqGSIb3DQEBCwUAMFIxCzAJBgNV
BAYTAkZSMQ4wDAYDVQQHEwVDUk9JWDETMBEGA1UEAxMKc3Zwcm94eXNnMTEeMBwG