Novell IFOLDER 3.7 - SECURITY ADMINISTRATION Bedienungsanleitung

Novell®

www.novell.com

novdocx (en) 11 July 2008

AUTHORIZED DOCUMENTATION

OES 2 SP1 Linux: Novell iFolder 3.7 Security Administration Guide

iFolder

3.7

December 2008

Security Administration Guide

novdocx (en) 11 July 2008

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Contents 5

Contents

novdocx (en) 11 July 2008

About This Guide 7

1 Security Best Practices Overview 9

1.1 Security Recommendations for iFolder 3.7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.2 Security Recommendations for OES Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 Security Best Practices for Novell iFolder 3.7 11

2.1 Secure Communication with the LDAP Server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.1 Using SSL for Server Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.2 LDAP Server Certificate via YaST Install. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2 Communication between the Web Admin Server and the Web Admin Browser . . . . . . . . . . . 12

2.3 Enterprise Client/Server Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.4 Web Access Server Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.5 Disabling the SSL 2.0 Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.6 Configuring a Cipher Suite to Use for SSL/TLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.7 Installing Trusted Roots and Certifications on the iFolder Server . . . . . . . . . . . . . . . . . . . . . . 13

2.8 Installing Server Certificates from a Known Certificate Authority . . . . . . . . . . . . . . . . . . . . . . . 13

2.9 Using a Shared Certificate in iFolder Clusters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.10 Ensuring Privilege Separation for the iFolder Proxy User . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.11 Using Synchronize Now to Remove Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.12 Controlling Access to the iFolder Data Store . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.13 Controlling Access to the iFolder Server Configuration Files . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.14 Controlling Access to And Backing Up the iFolder Audit Logs. . . . . . . . . . . . . . . . . . . . . . . . . 14

2.15 Storing iFolder 3.7 Data Encrypted on the Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.16 Preventing the Propagation of Viruses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.17 Backing Up the iFolder Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.18 Loading the Recovery Agent Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3 Security Best Practices for the iFolder Client 17

3.1 Configuring Client-Side Firewalls for iFolder Communications . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2 Configuring Client-Side Virus Scanners for iFolder Communications . . . . . . . . . . . . . . . . . . . 17

3.3 Configuring a Web Browser to Use SSL 3.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.4 Creating an Encrypted iFolder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.5 Using the Recovery Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

3.6 Transferring the Encryption Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4 Other Security Best Practices 19

4.1 Controlling Physical Access to the iFolder Servers and Resources. . . . . . . . . . . . . . . . . . . . . 19

4.2 Securing Access to the Servers with a Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.3 Securing Communications with a VPN If SSL Is Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

4.4 Securing Wireless LAN Connections If SSL Is Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.5 Creating Strong Password And Passphrase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6OES 2 SP1 Linux: Novell iFolder 3.7 Security Administration Guide

novdocx (en) 11 July 2008

A Documentation Updates 21

A.1 December 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

A.2 December 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

A.3 October 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

A.4 August 15, 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

A.5 November 1, 2005 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

About This Guide 7

novdocx (en) 11 July 2008

About This Guide

This guide provides specific instructions on how to install, configure, and maintain Novell®

iFolder®3.7 and the iFolderTM client for iFolder 3.7 in the most secure way possible.

Chapter 1, “Security Best Practices Overview,” on page 9

Chapter 2, “Security Best Practices for Novell iFolder 3.7,” on page 11

Chapter 3, “Security Best Practices for the iFolder Client,” on page 17

Chapter 4, “Other Security Best Practices,” on page 19

Audience

This guide is intended for network security administrators.

Feedback

We want to hear your comments and suggestions about this manual and the other documentation

included with this product. Please use the User Comment feature at the bottom of each page of the

online documentation, or go to Novell Documentation Feedback (http://www.novell.com/

documentation/feedback.html) and enter your comments there.

Documentation Updates

For the most recent version of the Novell iFolder 3.x Security Administrator Guide, visit the Novell

iFolder 3.x documentation Web site (http://www.novell.com/documentation/ifolder3/index.html).

For emerging issues with Novell iFolder 3.7 and the iFolder client, see the Novell iFolder 3.7

Readme (http://www.novell.com/documentation/ifolder3).

Additional Documentation

Novell iFolder 3.xdocumentation (http://www.novell.com/documentation/ifolder3/index.html)

Novell Open Enterprise Server product site (http://www.novell.com/products/

openenterpriseserver)

Novell Open Enterprise Server documentation (http://www.novell.com/documentation/oes/

index.html)

Novell eDirectoryTM 8.8 documentation (http://www.novell.com/documentation/edir88/

treetitl.html)

Novell iManager 2.7 documentation (http://www.novell.com/documentation/imanager27/

treetitl.html)

Novell Technical Support (http://www.novell.com/support/)

Documentation Conventions

In Novell documentation, a greater-than symbol (>) is used to separate actions within a step and

items in a cross-reference path.

8OES 2 SP1 Linux: Novell iFolder 3.7 Security Administration Guide

novdocx (en) 11 July 2008

A trademark symbol (®, TM, etc.) denotes a Novell trademark. An asterisk (*) denotes a third-party

trademark.

When a single pathname can be written with a backslash for some platforms or a forward slash for

other platforms, the pathname is presented with a backslash. Users of platforms that require a

forward slash, such as Linux* or UNIX*, should use forward slashes as required by your software.

Security Best Practices Overview

novdocx (en) 11 July 2008

Security Best Practices Overview

This section summarizes the recommended configurations and settings required to run Novell®

iFolder®3.7 and the iFolderTM client in a secure mode.

Section 1.1, “Security Recommendations for iFolder 3.7,” on page 9

Section 1.2, “Security Recommendations for OES Linux,” on page 10

1.1 Security Recommendations for iFolder 3.7

The following table lists the iFolder server configuration settings that impact iFolder security.

Table 1-1 Security Recommendations

Parameter Possible Values Default Value Recommended Value for

Best Security

SSL for server to LDAP

server communications

Novell iManager >

iFolder 3.7 > Launch

iFolder Web Admin

Console > Servers >

Server Details > LDAP

SSL > Yes

Select Yes to enable

SSL; deselect Yes (No)

to disable SSL

Yes, SSL enabled Yes, SSL enabled

Web browser to

iManager Server

communications

HTTPS and Novell

eDirectoryTM

authentication

HTTPS and eDirectory

authentication

HTTPS and eDirectory

authentication

iFolder Admin user User-specified User-specified

administrator user

Special iFolder Admin

user identity for

managing iFolder

services

Equivalent iFolder

Admin users

User-specified None Users with limited

administrator rights,

such as for a specific

iFolder server

iFolder Proxy user

password

User-specified Auto generated during

initial configuration of the

iFolder server

User-specified, using

strong password

practices

Server to client

communications

SimiasRequireSSL (Yes/

No)

SimiasRequireSSL =

Yes

SimiasRequireSSL =

Yes

Server to Server

Communication

Select Yes during setup

to enable SSL, or select

No to disable SSL

Yes, SSL enabled

SimiasUrl https

SimiasCert <RAW

certificate>

Yes, SSL enabled

10 OES 2 SP1 Linux: Novell iFolder 3.7 Security Administration Guide

novdocx (en) 11 July 2008

1.2 Security Recommendations for OES Linux

For information about security issues in Novell Open Enterprise Server, see the following sections

in the Novell OES Planning and Implementation Guide (http://www.novell.com/documentation/oes/

implgde/data/front.html):

“Authentication” (http://www.novell.com/documentation/oes/implgde/data/

authentication.html)

“Security” (http://www.novell.com/documentation/oes/implgde/data/security.html)

/opt/novell/

ifolder3/web/

web.config file

SimiasUrl (https/http)

SimiasCert (RAW

certificate/none)

SimiasRequireSSL https

SimiasCert <RAW

certificate>

SimiasRequireSSL https

SimiasCert <RAW

certificate>

Parameter Possible Values Default Value Recommended Value for

Best Security

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