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Secure IMAP (and POP3)

Secure IMAP (and POP3)

Roberto Cecchini

                    
                

±èÁ¤¼ö

 
                    
                

v 2.6 18 December 2000 ¹ø¿ª: v 1.3 12 April 2001


ÀÌ ¹®¼­´Â stunnelÀ» ÀÌ¿ëÇÏ¿© SSLÀ» Áö¿øÇÏÁö ¾Ê´Â IMAPÀ̳ª POP3µ¥¸óÀÌ SSLÀ» ÀÌ¿ëÇÒ ¼ö ÀÖ°Ô ÇÏ´Â ¹æ¹ýÀ» ¼Ò°³ÇÑ´Ù. ƯÈ÷ POP3Á¢¼Ó½Ã ·Î±×ÀÎ À̸§°ú ¾ÏÈ£°¡ ÆÐŶ»ó¿¡ Æò¹®À¸·Î ´©ÃâµÇ´Â ¾àÁ¡ÀÌ Àִµ¥, À̸¦ ±Øº¹ÇÒ ¼ö ÀÖ´Â ÁÁÀº ¼ö´ÜÀÌ µÉ ¼ö ÀÖ´Ù. º»ÀÎÀÌ ¾à°£ÀÇ ¼³¸íÀ̳ª ³»¿ëÀ» µ¡ºÙ¿´´Ù. ¿ø¹®Àº http://security.fi.infn.it/tools/stunnel/index-en.html ¿¡¼­ º¼ ¼ö ÀÖ´Ù.


1. ¼­·Ð

Netscape(IMAP)¿Í Outlook(IMAP °ú POP3)´Â ¸ÞÀϼ­¹ö¿¡ ¾ÏȣȭµÈ Á¢¼Ó(SSL)À» Áö¿øÇÑ´Ù. ¸¸ÀÏ IMAP¼­¹ö°¡ ÀÌ·± Á¾·ùÀÇ Á¢¼ÓÀ» Áö¿øÇÏÁö ¾Ê´Â´Ù¸é ºÎºÐÀûÀÎ ÇØ°áÃ¥Àº SSL wrapper¸¦ ¾²´Â °ÍÀÌ´Ù. ¿©·¯°¡Áö°¡ ¸¹ÀÌ ÀÖÁö¸¸, ³ª´Â stunnelÀ» ¾´´Ù.


2. OpenSSL ¼³Ä¡

ù¹ø° ÀÏÀº OpenSSLÀ» ¼³Ä¡ÇÏ´Â °ÍÀÌ´Ù.

  1. tar ÆÄÀÏÀ» /usr/local ¿¡ Ǭ´Ù.

  2. ´ÙÀ½°ú °°Àº °£´ÜÇÑ ÀýÂ÷¸¦ µû¸£¶ó(openssl-0.9.6a ±âÁØÀÌ´Ù).

    $ ./config
    $ make
    $ make test
    $ make install
                                


3. ÀÎÁõ¼­ ¿äû°ú ¼³Ä¡

ÁÖÀÇ: ÀÌ ÀýÂ÷µéÀº .infn.it¿¡¸¸ ÇØ´çµÇ´Â °ÍÀÌ´Ù.

  1. srv.cnf ¸¦ /usr/local/ssl/lib/ ¿¡ º¹»çÇÑ´Ù(ÁÖ: ÀÌ°ÍÀº ÁöÀºÀÌÀÇ Áö¿ªÀû ¼³Á¤À¸·Î OpenSSLÀÇ Ãʱ⠼³Á¤ ÆÄÀÏÀÎ /usr/local/ssl/openssl.cnf À» ÀÌ¿ëÇϴ°ÍÀÌ ÀϹÝÀû °æ¿ì´Ù.).

  2. ÀÎÁõ¼­ ¿äûÀ» »ý¼ºÇÑ´Ù.

    > cd /usr/local/ssl/certs
    > /usr/local/ssl/bin/openssl req -new -nodes -out req.pem \
     -keyout key.pem -config /usr/local/ssl/lib/srv.cnf
    
    Using configuration from /usr/local/ssl/lib/srv.cnf
    Generating a 1024 bit RSA private key
    .......................+++++
    .........................+++++
    writing new private key to 'key.pem'
    -----
    You are about to be asked to enter information that will be      
    incorporated into your certificate request.
    What you are about to enter is what is called 
    a Distinguished Name or a DN.
    There are quite a few fields but you can leave some blank
    For some fields there will be a default value,
    If you enter '.', the field will be left blank.
    -----
    %ÀÌÁ¦ ´ç½ÅÀÇ ÀÎÁõ¼­ ¿äû(certificate request)¿¡ ±â·ÏµÉ Á¤º¸¸¦ ¹°¾îº¼ ¶§ÀÌ´Ù.
    %ÀÔ·ÂµÉ °ÍÀº ±¸º°µÇ´Â À̸§(Distinguished Name) À̳ª DNÀ¸·Î ºÎ¸¥´Ù.
    %´ç½ÅÀÌ ÀÔ·ÂÇÒ Ç׸ñÀº ¸î°³ µÇÁö ¾ÊÀ¸¸ç, ±âº»°ªÀ» ÃëÇÒ¶§´Â ºóÄ­À¸·Î ´ë½ÅÇÒ¼ö ÀÖ´Ù. 
    %¸¸ÀÏ ´ç½ÅÀÌ '.'¸¦ ÀÔ·ÂÇÑ´Ù¸é, ±× Ç׸ñÀº °ø¹éÀ¸·Î ³²À»°ÍÀÌ´Ù.
    
    Country Name (2 letter code) [IT]:                                  %2-¹®ÀÚ ±¹°¡ÄÚµå
    INFN (accettare il default!) [INFN]:                                %µµ¸ÞÀÎ¸í °°Àºµ¥¿ä?
    Locality Name (p.e. Firenze) []:Firenze                             %Áö¿ª¸í
    Organization Name (p.e. Sezione di Firenze) []:Sezione di Firenze   %±â°ü¸í
    Server type [Server IMAP]:          %¼­¹öŸÀÔ
    Server name (p.e. postino.fi.infn.it) []:postino.fi.infn.it         %¼­¹öÀ̸§
    Email Address []:cecchini@fi.infn.it        
    
    > chmod 600 key.pem
                            

    key.pem Àº ¼­¹ö ºñ¹ÐÅ°(private key)¸¦ Æò¹®À¸·Î ´ã°í ÀÖ´Ù!

  3. req.pem À» ÀÎÁõ¼­¸¦ º¸³»ÁÙ CA·Î º¸³½´Ù(Âü°í: ÀÚÇÊ ¼­¸í ÀÎÁõ¼­ »ý¼º: ¼­Á¤·æ´ÔÀÇ ¹ø¿ªÁß ÀϺÎ).

  4. (¿¡µðÅ͸¦ ÀÌ¿ëÇÏ¿©) /usr/local/ssl/certs/stunnel.pem ¸¦ ÀÛ¼ºÇϴµ¥, ÀÌ´Â ¼­¹ö ºñ¹ÐÅ°¿Í ¼­¹ö ÀÎÁõ¼­¸¦ ´ã°í ÀÖ´Ù. ÇϳªÀÇ ºó ÁÙÀ» µÎ ºÎºÐ »çÀÌ¿¡ »ðÀÔÇÏ°í, ¶ÇÇϳªÀÇ ºóÁÙÀ» ÆÄÀÏ °¡Àå ¹Ø¿¡´Ù »ðÀÔÇ϶ó.

    ¿ªÀÚÁÖ: ½ÇÁ¦ÀûÀ¸·Î ÇÑÁÙÀÌ º°µµ·Î ÷°¡µÇÁö ¾Ê¾Æµµ Àß µ¿ÀÛÇÏ¿´´Ù. µû¶ó¼­ ÁöÀºÀÌÀÇ Àǵµ´Â °¢ ºÎºÐÀÌ ³¡³ª°í ´ÙÀ½ÁÙ·Î ³Ñ¾î°¡¶ó´Â ¶æÀ¸·Î ¹Þ¾ÆµéÀÌ¸é µÇ°Ú´Ù. ´ÙÀ½Àº stunnel.pemÀÇ ³»¿ëÀÇ ¿¹ÀÌ´Ù.

     -----BEGIN RSA PRIVATE KEY-----                                    
     MIICXQIBAAKBgQDHkqs4YDbakYxRkYXIpY7xLXDQwULR5LW7xWVzuWmmZJOtzwlP   % ¼­¹ö ºñ¹ÐÅ° ºÎºÐ  
     7mN87g+aaiQzwXUVndaCw3Zm6cOG4mytf20jPZq0tvWnjEB3763sorpfpOe/4Vsn   %
     VBFjyQY6YdqYXNmjmzff5gTAecEXOcJ8CrPsaK+nkhw7bHUHX2X+97oMNQIDAQAB   
     AoGBAMd3YkZAc9LUsig8iDhYsJuAzUb4Qi7Cppj73EBjyqKR18BaM3Z+T1VoIpQ1   
     DeXkr39heCrN7aNCdTh1SiXGPG6+fkGj9HVw7LmjwXclp4UZwWp3fVbSAWfe3VRe
     LM/6p65qogEYuBRMhbSmsn9rBgz3tYVU0lDMZvWxQmUWWg7BAkEA6EbMJeCVdAYu
     nQsjwf4vhsHJTChKv/He6kT93Yr/rvq5ihIAPQK/hwcmWf05P9F6bdrA6JTOm3xu
     TvJsT/rIvQJBANv0yczI5pUQszw4s+LTzH+kZSb6asWp316BAMDedX+7ID4HaeKk
     e4JnBK//xHKVP7xmHuioKYtRlsnuHpWVtNkCQQDPru2+OE6pTRXEqT8xp3sLPJ4m
     ECi18yfjxAhRXIU9CUV4ZJv98UUbEJOEBtx3aW/UZbHyw4rwj5N511xtLsjpAkA9
     p1XRYxbO/clfvf0ePYP621fHHzZChaUo1jwh07lXvloBSQ6zCqvcF4hG1Qh5ncAp
     zO4pBMnwVURRAb/s6fOxAkADv2Tilu1asafmqVzpnRsdfBZx2Xt4oPtquR9IN0Q1
     ewRxOC13KZwoAWtkS7l0mY19WD27onF6iAaF7beuK/Va
     -----END RSA PRIVATE KEY-----
     -----BEGIN CERTIFICATE-----
     MIIECTCCA3KgAwIBAgIBADANBgkqhkiG9w0BAQQFADCBujELMAkGA1UEBhMCVVMx   % ÀÎÁõ¼­ ºÎºÐ
     EzARBgNVBAgTCldhc2hpbmd0b24xEDAOBgNVBAcTB1NlYXR0bGUxHzAdBgNVBAoT   %
     FkJsdXJkeWJsb29wIEluZHVzdHJpZXMxFjAUBgNVBAsTDUlTIERlcGFydG1lbnQx
     ITAfBgNVBAMTGEJvbWJhc3RpYyBULiBCbHVyZHlibG9vcDEoMCYGCSqGSIb3DQEJ
     ARYZYm9tYmFzdGljQGJsdXJkeWJsb29wLmNvbTAeFw0wMDA2MDYwMDUxMTRaFw0x
     MDA2MDQwMDUxMTRaMIG6MQswCQYDVQQGEwJVUzETMBEGA1UECBMKV2FzaGluZ3Rv
     bjEQMA4GA1UEBxMHU2VhdHRsZTEfMB0GA1UEChMWQmx1cmR5Ymxvb3AgSW5kdXN0
     cmllczEWMBQGA1UECxMNSVMgRGVwYXJ0bWVudDEhMB8GA1UEAxMYQm9tYmFzdGlj
     IFQuIEJsdXJkeWJsb29wMSgwJgYJKoZIhvcNAQkBFhlib21iYXN0aWNAYmx1cmR5
     Ymxvb3AuY29tMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHkqs4YDbakYxR
     kYXIpY7xLXDQwULR5LW7xWVzuWmmZJOtzwlP7mN87g+aaiQzwXUVndaCw3Zm6cOG
     4mytf20jPZq0tvWnjEB3763sorpfpOe/4VsnVBFjyQY6YdqYXNmjmzff5gTAecEX
     OcJ8CrPsaK+nkhw7bHUHX2X+97oMNQIDAQABo4IBGzCCARcwHQYDVR0OBBYEFD+g
     lcPrnpsSvIdkm/eol4sYYg09MIHnBgNVHSMEgd8wgdyAFD+glcPrnpsSvIdkm/eo
     l4sYYg09oYHApIG9MIG6MQswCQYDVQQGEwJVUzETMBEGA1UECBMKV2FzaGluZ3Rv
     bjEQMA4GA1UEBxMHU2VhdHRsZTEfMB0GA1UEChMWQmx1cmR5Ymxvb3AgSW5kdXN0
     cmllczEWMBQGA1UECxMNSVMgRGVwYXJ0bWVudDEhMB8GA1UEAxMYQm9tYmFzdGlj
     IFQuIEJsdXJkeWJsb29wMSgwJgYJKoZIhvcNAQkBFhlib21iYXN0aWNAYmx1cmR5
     Ymxvb3AuY29tggEAMAwGA1UdEwQFMAMBAf8wDQYJKoZIhvcNAQEEBQADgYEAwEEk
     JXpVXVaFTuG2VJGIzPOxQ+X3V1Cl86y4gM1bDbqlilOUdByUEG4YfSb8ILIn+eXk
     WzMAw63Ww5t0/jkO5JRs6i1SUt0Oy80DryNRJYLBVBi499WEduro8GCVD8HuSkDC
     yL1Rdq8qlNhWPsggcbhuhvpbEz4pAfzPkrWMBn4=
     -----END CERTIFICATE-----
                            

  5. req.pem °ú key.pem À» »èÁ¦ÇÏ°í, stunnel.pem À» º¸È£Ç϶ó (chmod 600). Áö±Ý ÀÌ ÆÄÀÏÀº ¼­¹ö ºñ¹ÐÅ°¸¦ Æò¹®À¸·Î ´ã°í ÀÖ´Ù.


4. stunnel ¼³Ä¡

´ÙÀ½°ú °°ÀÌ °£´ÜÇÑ ÀýÂ÷¸¦ µû¸¥´Ù(stunnel-3.14 ±âÁØ).

$ ./configure
$ make
$ make install
            

5. ¼­¹ö¿¡¼­ÀÇ stunnel

stunnelÀ» µ¥¸óÀ¸·Î¼­ ÀÛµ¿ÇÒ °ÍÀ» ±ÇÇÑ´Ù. ºÎÆ®½Ã¿¡ ´ÙÀ½ ¸í·ÉµéÀ» ÀÌ¿ëÇÑ´Ù. (µÎ¹ø° ¸í·ÉÀº ¿ÀÁ÷ POP3 ¿¬°áÀÌ ÇÊ¿äÇÒ ¶§¸¸ ÀÌ¿ëÇÑ´Ù.)

stunnel -d 993 -p /usr/local/ssl/certs/stunnel.pem -r localhost:imap
stunnel -d 995 -p /usr/local/ssl/certs/stunnel.pem -r localhost:pop
                

¿ªÀÚÁÖ: ¿©±â¼­ -d ¿É¼Ç°ú -r¿É¼ÇÀÌ º´ÇàÇÏ´Â °ÍÀ» ÁÖÀÇÇØ º¼ ÇÊ¿ä°¡ ÀÖ´Ù. -d ¿É¼ÇÀº ÁÖ¾îÁø Æ÷Æ®¿¡ ´ëÇÏ¿© µ¥¸ó¸ðµå·Î ÀÛµ¿Ç϶ó´Â ¶æÀε¥ ¿¹¸¦ µé¾î POP3¿¡¼­´Â 995¹ø Æ÷Æ®¸¦ °¨½ÃÇÏ´Ù°¡, SSLÁ¢¼ÓÀÌ µÇ¸é ±× ³»¿ëÀ» º¹È£È­ÇÏ¿© pop3Æ÷Æ®·Î Æ÷¿öµùÇÑ´Ù. ÀÌ ¹æ¹ýÀÇ °æ¿ì ¹Ýµå½Ã »óÀÀÇÏ´Â µ¥¸óµµ °°ÀÌ ÀÛµ¿ÇÏ°í ÀÖ¾î¾ß Çϸç - Æ÷¿öµùÇÒ Æ÷Æ®°¡ ÀÖ¾î¾ß ÇÑ´Ù - ¸ðµç »ç¿ëÀÚ°¡, SSLÀ» ÀÌ¿ëÇÑ Á¢¼ÓÀ» ÇÑ´Ù´Â °¡Á¤ÀÌ ¾ø±â ¶§¹®¿¡ ±×´ÙÁö È¿°úÀûÀÌÁö ¸øÇÏ´Ù. ¿©±â¼­ -l¿É¼ÇÀ» ÀÌ¿ëÇÑ µÎ¹ø° ¹æ¹ýÀ» »ý°¢ÇØ º»´Ù.

stunnel -d 993 -p /usr/local/ssl/certs/stunnel.pem -l /usr/sbin/imapd
stunnel -d 995 -p /usr/local/ssl/certs/stunnel.pem -l /usr/sbin/ipop3d
stunnel -d 995 -p /usr/local/ssl/certs/stunnel.pem -l /usr/local/lib/popper -- popper qpopper -s
                

ÀÌ°ÍÀº ÁÖ¾îÁø Æ÷Æ®¸¦ °¨½ÃÇÏ´Ù°¡ Á¢¼ÓµÇ¸é, ±× ³»¿ëÀ» º¹È£È­ÇÏ¿© -l ÀÌ ÁöÁ¤ÇÑ ÇÁ·Î±×·¥¿¡ ³Ñ±â¶ó´Â ¶æÀÌ´Ù. ¿©±â¼­´Â Æ÷¿öµùÇÒ Æ÷Æ®°¡ µû·Î ÇÊ¿ä¾ø¾î ¾ÕÀÇ ¹æ¹ýº¸´Ù È¿°úÀûÀÌ´Ù. Qualcomm»çÀÇ qpopperó·³ ½ÇÇàÇÒ ÇÁ·Î±×·¥ÀÌ ¿É¼ÇÀÌ ÇÊ¿äÇÑ °æ¿ì 3¹ø° ¿¹Á¦Ã³·³ -- µÚ¿¡ ¿É¼ÇÀ» ÁØ ¿ÏÀüÇÑ ÇüÅ·Π¾²¸é µÈ´Ù.

-L ¿É¼Çµµ Á¸ÀçÇϴµ¥, Â÷ÀÌÁ¡Àº -l ¿É¼ÇÀº inetd ŸÀÔÀÇ ÇÁ·Î±×·¥(ipop3dµî)À» ½ÇÇàÇÒ¶§ »ç¿ëµÇ´Â Ưº°ÇÑ °æ¿ì¸¦ ¶æÇÑ´Ù. -L¿É¼ÇÀÇ °æ¿ì local pty¸¦ ¿­°í ÇÁ·Î±×·¥À» ½ÇÇàÇÑ´Ù.


6. E-Mail Ŭ¶óÀ̾ðÆ®(Unix) ¼³Á¤

SSLÀ» Áö¿øÇϴ Ŭ¶óÀ̾ðÆ®(Netscape Messanger, Outlook, Pine etc)µé¿¡ ´ëÇؼ­ ¿ÀÁ÷ ÇØ ÁÖ¾î¾ß ÇÒ ÀÏÀº ±×°ÍµéÀÌ º¸¾È Á¢¼Ó(Secure connection)À» ÇÒ ¼ö ÀÖµµ·Ï ¼³Á¤À» ÇØ ÁÖ´Â °ÍÀÌ´Ù.

¿ªÀÚÁÖ: Netscape Messanger´Â (v4.75±îÁö)¼­¹ö¿¡ POP3Á¢¼Ó½Ã SSLÀ» Áö¿øÇÏÁö ¾Ê´Â´Ù(¼³Á¤ÀÇ SSLÀº º¸³»´Â ¸ÞÀÏ ¼­¹öÀÇ ¼³Á¤ÀÌ´Ù).

¿©±â¼­´Â ºê¶ó¿ìÀúµéÀÌ ¼­¹ö ÀÎÁõ¼­¸¦ ¹ß±ÞÇÑ CAÀÇ ÀÎÁõ¼­¸¦ Æ÷ÇÔÇϴ°¡ÀÇ ¿©ºÎ´Â ²À ÇÊ¿äÇÏÁö ¾Ê´Ù. ¹°·Ð ¼­¹ö ÀÎÁõ¼­¸¦ Æ÷ÇÔÇÑ´Ù¸é ´õ ÁÁ´Ù.

SSLÀ» Áö¿øÇÏÁö ¾Ê´Â ¸ÞÀÏ Å¬¶óÀ̾ðÆ®µé¿¡ ´ëÇؼ­´Â ´ÙÀ½°ú °°ÀÌ ¼³Á¤ÇÑ´Ù.

  1. stunnelÀ» Ŭ¶óÀ̾ðÆ®¿¡ ¼³Ä¡ÇÑ´Ù.

  2. ¸¸ÀÏ ´ç½ÅÀÌ ¼­¹ö ÀÎÁõ¼­(¿É¼ÇÀÌÁö¸¸, ±ÇÇÑ´Ù)¸¦ È®ÀÎÇϱ⸦ ¿øÇÑ´Ù¸é ¼­¹ö CA ÀÎÁõ¼­¸¦ /usr/local/ssl/certs/CAcert.pem ¿¡ º¹»çÇÑ´Ù. ±×¸®°í

    > cd /usr/local/ssl/certs/
    > ln -s CAcert.pem `/usr/local/ssl/bin/openssl x509 \ -noout -hash < CAcert.pem`.0
                                

  3. ´ÙÀ½ ¸í·ÉÀ¸·Î stunnelÀ» ±¸µ¿ÇÑ´Ù(Åë»óÀûÀ¸·Î ½Ã½ºÅÛÀ» ±¸µ¿ÇÒ¶§ÀÌ´Ù).

    > stunnel -c -v 2 -d 143 -r imap_server:993
    > stunnel -c -v 2 -d 110 -r pop3_server:995
                                

    ¿©±â¼­ -v 2 ¿É¼ÇÀº 2¹ø(¼­¹ö ÀÎÁõ¼­ È®ÀνÃ)¿¡¸¸ ÇØ´çµÈ´Ù.

    ¿ªÀÚÁÖ: -c´Â Ŭ¶óÀ̾ðÆ® ¸ðµå¸¦ ³ªÅ¸³½´Ù. Ŭ¶óÀ̾ðÆ® ¸ðµå¿¡¼­´Â -d ¿Í -r¿¡ ÇÒ´çµÇ´Â Æ÷Æ® ¹øÈ£°¡ ¼­¹öÀÇ °æ¿ì¿Í ¹Ý´ëÀÓÀ» º¼ ¼ö ÀÖ´Ù. -d ¿¡¼­ ÇÒ´çµÈ Æ÷Æ®¿¡¼­ ³ª¿À´Â ³»¿ëÀ» ¾ÏȣȭÇÏ¿© -r·Î ÇÒ´çµÈ Æ÷Æ®·Î Æ÷¿öµùÇÑÈÄ ¼­¹ö¿Í Åë½ÅÀ» ÇÑ´Ù°í ÀÌÇØÇÏ¸é µÇ°Ú´Ù.

  4. e-mailŬ¶óÀ̾ðÆ®°¡ imap(¶Ç´Â pop3) Æ÷Æ®¸¦ È®ÀÎÇÒ ¼ö ÀÖµµ·Ï ¼³Á¤Ç϶ó.


7. E-mail Ŭ¶óÀ̾ðÆ®(Windows) ¼³Á¤

SSLÀ» Áö¿øÇϴ Ŭ¶óÀ̾ðÆ®(¿¹: Netscape Messanger, Outlook, Pine)µé¿¡ ´ëÇؼ­ ¿ÀÁ÷ ÇØ ÁÖ¾î¾ß ÇÒ ÀÏÀº ±×°ÍµéÀÌ º¸¾È Á¢¼Ó(Secure connection)À» ÇÒ ¼ö ÀÖµµ·Ï ¼³Á¤À» ÇØ ÁÖ´Â °ÍÀÌ´Ù.

¿ªÀÚÁÖ: Netscape Messanger´Â (v4.75±îÁö)¼­¹ö¿¡ pop3Á¢¼Ó½Ã SSLÀ» Áö¿øÇÏÁö ¾Ê´Â´Ù(¼³Á¤ÀÇ SSLÀº º¸³»´Â ¸ÞÀÏ ¼­¹öÀÇ ¼³Á¤ÀÌ´Ù). Outlook Express 5´Â ¼­¹ö¿¡ POP3Á¢¼Ó½Ã SSLÀ» Áö¿øÇÑ´Ù.

¿©±â¼­´Â ºê¶ó¿ìÀúµéÀÌ ¼­¹ö ÀÎÁõ¼­¸¦ ¹ß±ÞÇÑ CAÀÇ ÀÎÁõ¼­¸¦ Æ÷ÇÔÇϴ°¡ÀÇ ¿©ºÎ´Â ²À ÇÊ¿äÇÏÁö ¾Ê´Ù. ¹°·Ð ¼­¹ö ÀÎÁõ¼­¸¦ Æ÷ÇÔÇÑ´Ù¸é ´õ ÁÁ´Ù.

SSLÀ» Áö¿øÇÏÁö ¾Ê´Â ¸ÞÀÏ Å¬¶óÀ̾ðÆ®µé¿¡ ´ëÇؼ­´Â ´ÙÀ½°ú °°ÀÌ ¼³Á¤ÇÑ´Ù.

  1. stunnelÀ» Ŭ¶óÀ̾ðÆ®¿¡ ¼³Ä¡ÇÑ´Ù.

    1. winstun.zip À» ´Ù¿î·ÎµåÇÑ´Ù.

    2. ssleay32.dll, libeay32.dll, stunnel.exe À» °°Àº µð·ºÅ丮¿¡ Ǭ´Ù(¿øÇÑ´Ù¸é dllÆÄÀϵéÀº \windows\systemÀ¸·Î ¿Å°Üµµ µÈ´Ù).

  2. stunnelÀ» ´ÙÀ½ ¸í·ÉÀ» ÀÌ¿ëÇÏ¿© ½ÇÇàÇÏ¿©¶ó.

    stunnel -c -d 143 -r imap_server:993
    stunnel -c -d 110 -r pop3_server:995
                                

  3. e-mailŬ¶óÀ̾ðÆ®°¡ imap(¶Ç´Â pop3) Æ÷Æ®¸¦ È®ÀÎÇÒ ¼ö ÀÖµµ·Ï ¼³Á¤Ç϶ó.


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