Transcript
Cyberoam SSL VPN Installation and Configuration Guide
Important Notice Cyberoam Technologies Pvt. Ltd. has supplied this Information believing it to be accurate and reliable at the time of printing, but is presented without warranty of any kind, expressed or implied. Users must take full responsibility for their application of any products. Cyberoam Technologies Pvt. Ltd. assumes no responsibility for any errors that may appear in this document. Cyberoam Technologies Pvt. Ltd. reserves the right, without notice to make changes in product design or specifications. Information is subject to change without notice. USER’S LICENSE Use of this product and document is subject to acceptance of the terms and conditions of Cyberoam End User License Agreement (EULA) and Warranty Policy for Cyberoam UTM Appliances. You will find the copy of the EULA at http://www.cyberoam.com/documents/EULA.html and the Warranty Policy for Cyberoam UTM Appliances at http://kb.cyberoam.com. RESTRICTED RIGHTS Copyright 1999 - 2014 Cyberoam Technologies Pvt. Ltd. All rights reserved. Cyberoam, Cyberoam logo are trademark of Cyberoam Technologies Pvt. Ltd. Corporate Headquarters Cyberoam Technologies Pvt. Ltd. 901, Silicon Tower, Off. C.G. Road, Ahmedabad – 380006, INDIA Phone: +91-79-66065606 Fax: +91-79-26407640 Web site: www.cyberoam.com
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Cyberoam SSL VPN Installation and Configuration Guide
Technical Support You may direct all questions, comments, or requests concerning the software you purchased, your registration status, or similar issues to Customer care/service department at the following address: Corporate Office Cyberoam Technologies Pvt. Ltd. 901, Silicon Tower Off C.G. Road Ahmedabad 380006 Gujarat, India. Phone: +91-79-66065606 Fax: +91-79-26407640 Web site: www.cyberoam.com Cyberoam contact: Technical support (Corporate Office): +91-79-66065777 Email:
[email protected] Web site: www.cyberoam.com Visit www.cyberoam.com for the regional and latest contact information.
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Cyberoam SSL VPN Installation and Configuration Guide
Contents
Introduction to SSL VPN ................................................................................................... 6
Concepts of SSL VPN ....................................................................................................... 7 SSL VPN Access Modes ................................................................................................................ 7 Network Resources ........................................................................................................................ 9
Installing Cyberoam SSL VPN Client............................................................................... 10
Configuring Cyberoam SSL VPN Client .......................................................................... 14
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Cyberoam SSL VPN Installation and Configuration Guide
Typographic Conventions Material in this manual is presented in text, screen displays, or command-line notation.
Item User Username Topic titles
Convention
Example The end user Username uniquely identifies the user of the system
Shaded font typefaces
Cyberoam SSL VPN Client
Subtitles
Bold & Black typefaces
Navigation link
Bold typeface
Group Management > Groups > Create it means, to open the required page click on Group management then on Groups and finally click Create tab
Name of a particular parameter / field / command button text Cross references
Lowercase italic type
Enter policy name, replace policy name with the specific name of a policy Or Click Name to select where Name denotes command button text which is to be clicked refer to Customizing User database Clicking on the link will open the particular topic
Notes & points to remember
Bold typeface between the black borders
Prerequisites
Bold typefaces between the black borders
Hyperlink in different color
Notation conventions
Note
Prerequisite Prerequisite details
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Cyberoam SSL VPN Installation and Configuration Guide
Introduction to SSL VPN A Virtual Private Network (VPN) is a tunnel that carries private network traffic from one endpoint system to another over a public network such as the Internet without the traffic being aware that there are intermediate hops between the endpoints or the intermediate hops being aware they are carrying the network packets that are traversing the tunnel. The tunnel may optionally compress and/or encrypt the data, providing enhanced performance and some measure of security.
VPN is cost-effective because users can connect to the Internet locally and tunnel back to connect to corporate resources. This not only reduces overhead costs associated with traditional remote access methods, but also improves flexibility and scalability. For business telecommuters or employees working from home, connecting securely to the corporate intranets or extranets to access files or application is essential. Hence, whenever users access the organization resources from remote locations, it is essential that not only the common requirements of secure connectivity be met but also the special demands of remote clients. These requirements include: Flexible Access: The remote users must be able to access the organization from various locations, like Internet cafes, hotels, airport etc. The range of applications available must include web applications, mail, file shares, and other more specialized applications required to meet corporate needs. Secure connectivity: Guaranteed by the combination of authentication, confidentiality and data integrity for every connection. Usability: Installation must be easy. No configuration should be required as a result of network modification at the remote user end. The given solution should be seamless for the connecting user. To satisfy the above basic requirements, a secure connectivity framework is needed to ensure that remote access to the corporate network is securely enabled. SSL (Secure Socket Layer) VPN provides simple-to-use and implement secure access for the remote users. It allows access to the Corporate network from anywhere, anytime and provides the ability to create point-to-point encrypted tunnels between remote user and company’s internal network, requiring combination of SSL certificates and a username/password for authentication to enable access to the internal resources. Depending on the access requirement, remote users can access through SSL VPN Client or End user Web Portal (clientless access).
Note
SSL VPN is not supported when Appliance is deployed as Bridge mode. SSL VPN feature is not available for CR15i
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Cyberoam SSL VPN Installation and Configuration Guide
Concepts of SSL VPN SSL VPN Access Modes When a remote user connects to the Cyberoam appliance, the Cyberoam appliance authenticates the user based on user name and password. A successful login determines the access rights of remote users according to user group SSL VPN policy. The user group SSL VPN policy specifies whether the connection will operate in Web Access mode or Tunnel Access mode. Tunnel Access mode Tunnel Access mode provides access to the Corporate network to remote users through laptops as well as from Internet cafes, hotels, airport etc. It requires an SSL VPN Client at the remote end. Remote users are required to download and install SSL VPN Client from the End-user Web Portal. SSL VPN client establishes a SSL VPN tunnel over the HTTPS link between the web browser and the Cyberoam appliance to encrypt and send the traffic to the Cyberoam appliance. Cyberoam allows two types of tunneling: Split Tunnel: To avoid the bandwidth choking, split tunnel can be configured which ensures that only the traffic for the private network is encrypted and tunneled while the Internet traffic is send through the usual unencrypted route .This is configured by default and is used to avoid bandwidth choking. In this mode, Cyberoam acts as a secure HTTP/HTTPS gateway and authenticates the remote users. On successful authentication, Cyberoam redirects the web browser to the Web portal. Remote users can download SSL VPN client and configuration file for installation. Configuring Tunnel Access mode is a two-step process: 1. Select Tunnel Access mode in VPN SSL policy 2. Assign policy to the user group Full Tunnel: This ensures that not only private network traffic but other Internet traffic is also tunneled and encrypted. For administrators, Cyberoam Web Admin console provides SSL VPN management. Administrator can configure SSL VPN users, access method and policies, network resources, and system and portal settings. For remote users: Access End user Web Portal If you are installing SSL VPN Client for the first time, download bundled SSL VPN Client and install client on desktop machine. Bundle includes installer as well as configuration file. If you have already installed the SSL VPN Client, download only the configuration file from End user Web Portal and import the downloaded SSL VPN Client Configuration file. Web Access Mode Web Access mode provides access to the remote users who are equipped with the web browser only and when access is to be provided to the certain Enterprise Web applications/servers through web browser only. In other words, it offers a clientless network access using any web browser. The feature comprises of an SSL daemon running on the Cyberoam unit and End user Web portal which provides users with access to network services and resources. In this mode, Cyberoam acts as a secure HTTP/HTTPS gateway and authenticates the remote
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Cyberoam SSL VPN Installation and Configuration Guide
users. On successful authentication, Cyberoam redirects the web browser to the Web portal from where remote users can access the applications behind the Cyberoam appliance. Configuring Web Access mode is a two-step process: 1. Select Web Access mode in VPN SSL policy 2. Assign policy to the User or Group For administrators, Cyberoam Web Admin console provides SSL VPN management. Administrator can configure SSL VPN users, access method and policies, user bookmarks for network resources, and system and portal settings. For remote users, customizable End user Web Portal enables access to resources as per the configured SSL VPN policy. With no hassles of client installation, it is truly a “clientless access”. Application access mode Application Access mode provides access to the remote users who are equipped with the web browser and when access is to be provided to the certain Enterprise applications through web browser only. Application access mode also offers a clientless network access using any web browser. The feature comprises of an SSL daemon running on the Cyberoam unit and End user Web portal which provides users with access to network services and resources. Application access allows remote access to different TCP based applications like HTTP, HTTPS, RDP, TELNET, SSH and FTP without installing client. In this mode, Cyberoam acts as a secure gateway and authenticates the remote users. On successful authentication, Cyberoam redirects the web browser to the Web portal from where remote users can access the applications behind the Cyberoam appliance. Configuring Application Access mode is a two-step process: 1. Select Application Access mode in VPN SSL policy 2. Assign policy to the User or Group For administrators, Cyberoam Web Admin console provides SSL VPN management. Administrator can configure SSL VPN users, access method and policies, user bookmarks for network resources, and system and portal settings. For remote users, customizable End user Web Portal enables access to resources as per the configured SSL VPN policy. With no hassles of client installation, it is also a “clientless access”.
Prerequisite (Remote User)
Microsoft Windows Supported – Windows 2000, Windows XP, Windows 7, Windows Vista and Windows Server 2003 Admin Rights Required – Remote user must be logged on as Admin User or must have Admin privilege JRE Installation – Java Runtime Environment Version 1.6 or above must be installed
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Cyberoam SSL VPN Installation and Configuration Guide
Threat - Free Tunneling Cyberoam scans VPN Tunnel Traffic (incoming and outgoing) for malware, spam, inappropriate content and intrusion attempts, ensuring Threat-free Tunneling. Furthermore, VPN traffic is subjected to DoS inspection, although Cyberoam does provide the option of bypassing DoS inspection for specific traffic. Cyberoam does not have an exclusive port assigned for the VPN Zone like the LAN, WAN and DMZ ports. As soon as a VPN connection is established, the port/interface used by the connection is automatically added to the VPN zone, and on disconnection, the port is removed by itself. VPN zone is used by both IPSec and SSL VPN traffic.
Note Threat Free Tunneling is applicable only when SSL VPN tunnel is established through Tunnel Access Mode.
Network Resources Network Resources are the components that can be accessed using SSL VPN. SSL VPN provides access to an HTTP or HTTPS server on the internal network, Internet, or any other network segment that can be reached by the Cyberoam. The Administrator can configure Web (HTTP) or Secure Web (HTTPS) bookmarks and internal network resources to allow access to Web-based resources and applications. If required, custom URL access can also be provided.
Network resources: Resource
Accessible in Mode
Bookmarks
Web Access Mode, Application Access Mode
Bookmark Groups
Web Access Mode, Application Access Mode
Custom URLs - Not defined as Bookmark
Web Access Mode
Enterprise Private Network resources
Tunnel Access Mode
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Cyberoam SSL VPN Installation and Configuration Guide
Installing Cyberoam SSL VPN Client Step 1 Download Cyberoam SSL VPN client installation program – CyberoamSSLVPNClient_Setup.exe from the Client page of Cyberoam website. Step 2 Double click on the downloaded file to install and select the language for displaying the installation steps. Follow the onscreen instructions given by the installation wizard.
Note Need Administrator privileges to install the client.
On clicking “Download Client”, the following message appears.
Screen - Prompt Message Step 3 Click “Save” to save a copy of the executable (.exe) file on your local machine. The following warning message appears.
Screen – Warning Message On clicking “Allow”, the “Installer Language” dialog box appears.
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Cyberoam SSL VPN Installation and Configuration Guide
Screen – Language Selection
Step 4 Select the preferred language. The default language is English.
Screen – Choose Install Location
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Cyberoam SSL VPN Installation and Configuration Guide
Step 5 Click “Browse” to change the location of the Destination Folder where the client is to be installed. Click “Install”. The following screen appears while installation is in progress.
Screen – Installation in Progress
Screen – TAP Adapter Confirmation
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Cyberoam SSL VPN Installation and Configuration Guide
Step 6 A screen will be displayed that prompts you to install the Tap-Windows adapter titled “TAPWindows Provider V9 Network adapters”. It is mandatory to install the Tap-Windows adapter to proceed further.
Screen – Warning Message
Screen – Installation Complete Once the installation is complete, you will find CrSSL Client icon
in the system tray.
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Cyberoam SSL VPN Installation and Configuration Guide
Configuring Cyberoam SSL VPN Client Step 1 Right click the Client icon
in the System Tray to configure the SSL VPN server IP Address.
Screen – Server Settings
Screen – SSL VPN Server Settings Step 2 Configure the SSL VPN Server, the Protocol and the Port. Use the ‘Restore to default (last imported) configuration’ to import the configurations made in the previous version.
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Cyberoam SSL VPN Installation and Configuration Guide
Step 3 Previous Configuration can also be imported by selecting the “Import Configuration” option as shown below:
Screen – Import Configuration Import Configuration using the on screen instructions that follow. Step 3 Login to access network resources or Internet Double click SSL VPN Client icon
and specify username and password and click Login button.
Screen – User Authentication Enable ‘Save username and password’ checkbox, if you don’t want to type username and password every time you login. Enable ‘Auto Start SSLVPN’ checkbox to automatically initiate the SSL VPN Client when the system starts. For enabling ‘Auto Start SSLVPN’ checkbox, ‘Save username and password’ checkbox needs to be enabled.
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Cyberoam SSL VPN Installation and Configuration Guide
If the “Per User Certificate” option is enabled from VPN > SSL > Tunnel Access > Tunnel Access Settings in Cyberoam, the user will be prompted to specify the configured Passphrase in the “Enter Password” option as shown in the screen below:
Screen – Enter Password (Passphrase) The icon turns yellow indicating that connection is in progress. Right click the CrSSL Client icon and click ‘Show Status’ to view the connection status.
Screen – View Connection Status
Screen – Connection Status
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Cyberoam SSL VPN Installation and Configuration Guide
The icon turns green
the moment connection is established and IP is leased.
Screen – Connection Established Right click the green SSL VPN Client icon
and click “Logout” to disconnect the connection.
Screen – Disconnect the connection Once disconnected, the SSLVPN Client icon turns red. Right click the red icon the SSL VPN Client.
and click Exit to
Screen – Exit the SSL VPN Client This finishes the configuration of Cyberoam SSL VPN client on the remote user’s machine.
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Cyberoam SSL VPN Installation and Configuration Guide
Configure Proxy (if required) Configure proxy if Client is not able to connect to the Internet directly i.e. outbound access is restricted via HTTP or SOCKS proxy.
Note If you are configuring proxy, make sure, you have not selected UDP protocol in the Server Settings (Step 2).
Screen – Configuring Proxy
Screen – Proxy Settings This completes the Installation and Configuration for Cyberoam SSL VPN Client.
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