6• Documents in mailboxes• Address book dataImportantBe sure to save all necessary settings and documents before starting to use thedata encryption feature or changing the settings. An error will occur if the connectedhard disk does not match the encryption settings.1.6. For Optimal Performance of the Security featuresThe manager (of the organization that the machine is used for) needs to follow theinstructions below:• Assign appropriate persons as system and machine administrators, and manageand train them properly.• If the network where the machine is installed is to be connected to externalnetworks, configure the network properly to block any unauthorized externalaccess.• The users have to set a user ID and a passcode certainly on accountingconfiguration of printer driver.• Users and Administrators need to set their passcode and encryption key based onthe following rules:- Set a passcode containing both numeric and alphabetic characters.- Do not set a passcode consisting of a string of characters that can be easilyguessed.• For secure operation, all of the remote trusted IT products that communicate withthe machine implement the communication protocol in accordance with industrystandard practice with respect to RFC/other standard compliance (SSL/TLS,IPSec, SNMPv3 ,S/MIME) and work as advertised.• The same settings are required as the machine’s configuration described asfollows:1. SSL/TLSSet the SSL client(WEB browser) and SSL server that communicate with themachine as following data encryption suite・SSL_RSA_WITH_RC4_128_SHA・SSL_RSA_WITH_3DES_EDE_CBC_SHA・TLS_RSA_WITH_AES_128_CBC_SHA・TLS_RSA_WITH_AES_256_CBC_SHA(Specifically、recommended browser is Microsoft internet Explorer 6/7、Netscape7.x、Mozilla Firefox 2.x/3.x)2. S/MIMESet the machine and mail clients as following Shared Key/hash function.・RC2(128bit)/SHA1・3Key Triple-DES(168bit)/SHA13. IPSecSet the IPSec host that communicate with the machine as following SharedKey/hash function.・AES(128bit)/SHA1・3Key Triple-DES(168bit)/SHA14. SNMPv3Shared key encrypt system of SNMPv3 is DES fixed. Hash function is select toSHA1.