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etween the Sametime and LDAP servers. If only user passwords are<br />

encrypted, only the “authenticating users” connection between the Sametime<br />

server and the LDAP server is encrypted with SSL. This option provides an<br />

intermediate level of security and has less effect on server performance than<br />

encrypting all of the data.<br />

► Encrypt no data: This option allows all directory information and passwords to<br />

pass unencrypted between the Sametime and LDAP servers. This option<br />

does not affect server performance and would be used if the administrator<br />

feels there is little or no chance that an unauthorized user can intercept<br />

information transmitted over the connections between the Sametime and<br />

LDAP servers.<br />

For more information on encrypting all data passing between the Sametime and<br />

LDAP servers, consult the Sametime Server Administrators Guide, which comes<br />

with the Sametime software and is also available on the Lotus Developer Domain<br />

at the following URL:<br />

http://doc.notes.net/uafiles.nsf/docs/QP30/$File/na5d3fus.pdf<br />

Meeting encryption<br />

In the Sametime Administrator interface, in the Configuration - Meeting Services<br />

section, one choice is “Encrypt all Sametime meetings.” When this option is<br />

selected, all T.120 screen-sharing and whiteboard data and audio/video data that<br />

passes between the Sametime Meeting Room or Sametime Broadcast client and<br />

the Sametime server during any meeting is encrypted. The meeting data is<br />

encrypted using the RSA RC2 block cipher with a 128 bit cipher key length.<br />

Encrypted meeting data will likely be transmitted more slowly than unencrypted<br />

meeting data.<br />

Requiring passwords<br />

Also within the Sametime Administrator interface, in the Configuration - Meeting<br />

Services section, is the option “Require all scheduled meetings to have a<br />

password,” as shown in Figure 12-3. This server setting automatically requires<br />

users to set a password for their meetings. If this is not checked, users still have<br />

the option to protect individual meetings with a password when they are created.<br />

Figure 12-3 Sametime Server Meeting Services security options<br />

Chapter 12. Security features of other Lotus products 549

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