I'm running stunnel version 4.2 on Windows XP I can access a lot of websites, example https://servicios.afip.gov.ar/tramites_con_clave_fiscal/misAportes/images/to... but CAN'T access https://apwebserver.rentasgcba.gov.ar/ablpatib_ssl/images/Actitud_BsAs_negro... apparently a response never arrives to my PC my conf file is cert = stunnel.pem ; Some performance tunings socket = l:TCP_NODELAY=1 socket = r:TCP_NODELAY=1 ; Some debugging stuff useful for troubleshooting debug = 7 ; Use it for client mode client = yes ; Service-level configuration [https1] client = yes accept = 6001 connect = servicios.afip.gov.ar:443 TIMEOUTclose = 0 [https] client = yes accept = 6002 connect = apwebserver.rentasgcba.gov.ar:443 TIMEOUTclose = 5 ; vim:ft=dosini