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  FreeBSD 10¿¡¼­ sendmail DH key ¿¡·¯ ÀÛ¼ºÀÏ : 2015/07/14 18:20
 
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          [ ÀÌÀüÈ­¸é / ¼öÁ¤ ]   ºñ¹Ð¹øÈ£ :     Àμâ¿ë È­¸é
      Á¦  ¸ñ : FreeBSD 10¿¡¼­ sendmail DH key ¿¡·¯
    ÀÛ¼ºÀÚ : ÁÁÀºÁøÈ£(truefeel, http://coffeenix.net/ )
    ÀÛ¼ºÀÏ : 2015.7.14(È­)

    FreeBSD 10.1¿¡¼­ ¼­¹ö ³»ºÎ ¸ÞÀÏ(cron°á°ú ¸ÞÀÏ, ¼­¹ö ·Î±× ¸ÞÀÏ µî) ¹ß¼ÛÇÒ ¶§, ´ÙÀ½°ú °°Àº ¿¡·¯°¡ ³ª¿Ô´Ù.

     
    Jul 14 13:05:36 cnx sendmail[35077]: STARTTLS=client, error: connect failed=-1, reason=dh key too small, SSL_error=1, errno=0, retry=-1
    Jul 14 13:05:36 cnx sm-mta[35078]: STARTTLS=server, error: accept failed=0, reason=sslv3 alert handshake failure, SSL_error=1, errno=0, retry=-1, relay=localhost [127.0.0.1]
    Jul 14 13:05:36 cnx sendmail[35077]: ruleset=tls_server, arg1=SOFTWARE, relay=[127.0.0.1], reject=403 4.7.0 TLS handshake.
     


    ÀÌ ¿¡·¯°¡ ¿Ö °©Àڱ⠳ª¿À´ÂÁö È®ÀÎÇغôõ´Ï FreeBSD 10.1-p13¿¡¼­ ´ÙÀ½°ú °°Àº ÆÐÄ¡°¡ ÀÌ·ïÁ³´Ù. ÆÐÄ¡ ÈÄ DH Key(Diffie-Hellman Key)°¡ ³Ê¹« ª¾Æ¼­ »ý°å´ø °Í.

     
    20150618:       p13     FreeBSD-EN-15:08.sendmail
            Improvements to sendmail TLS/DH interoperability. [EN-15:08]
     


    openssl·Î DH ÆĶó¹ÌÅÍ »ý¼ºÇØÁØ ÈÄ sendmail Àç½ÇÇàÇÏ¸é ¿Ï·á.

     
    # cd /etc/mail/certs
    # openssl dhparam -out dh.param 4096
     


    ¸ÞÀÏ ¹ß¼ÛÇÏ¸é ´ÙÀ½°ú °°ÀÌ ³ª¿Ã °ÍÀÌ´Ù.

     
    Jul 14 13:26:47 cnx sm-mta[36512]: STARTTLS=server, relay=localhost [127.0.0.1], version=TLSv1/SSLv3, verify=NO, cipher=DHE-RSA-AES256-GCM-SHA384, bits=256/256
    Jul 14 13:26:47 cnx sendmail[36511]: STARTTLS=client, relay=[127.0.0.1], version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-GCM-SHA384, bits=256/256
    ... »ý·« ...
     
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