Working with Virtual Systems

This section presents procedures for creating and configuring Virtual Systems.

Introduction

The Virtual SystemClosed Virtual Device on a VSX Gateway or VSX Cluster Member that implements the functionality of a Security Gateway. Acronym: VS. definition process varies somewhat according to the template selected when creating the VSX GatewayClosed Physical server that hosts VSX virtual networks, including all Virtual Devices that provide the functionality of physical network devices. It holds at least one Virtual System, which is called VS0..

A typical Virtual System contains two interfaces:

  • External interface leading to external networks, a DMZ, or the Internet

  • Internal interface leading to internal networks or servers, often by means of a VLAN trunk

VSXClosed Virtual System Extension. Check Point virtual networking solution, hosted on a computer or cluster with virtual abstractions of Check Point Security Gateways and other network devices. These Virtual Devices provide the same functionality as their physical counterparts. supports up to 128 interfaces for each Virtual DeviceClosed Logical object that emulates the functionality of a type of physical network object. Virtual Device can be on of these: Virtual Router, Virtual System, or Virtual Switch. and a total of up to 4096 interfaces per VSX Gateway or clusterClosed Two or more Security Gateways that work together in a redundant configuration - High Availability, or Load Sharing..

The supported interfaces include VLANs and Warp Links.

Note - By default, a Virtual System supports up to 64 interfaces. For more about how to increase the number of supported interfaces, see sk99121.

You can add as many interfaces to a Virtual System as required, according to system resources.

Here is an example of a typical VSX Gateway deployment with two Virtual Systems, each with two interfaces.

Item

Description

 

Item

Description

1

Internet

 

8

Virtual System 2

2

Router

 

9

VLAN Switch

3

VSX Gateway

 

10

Network 1

4

Virtual SwitchClosed Virtual Device on a VSX Gateway or VSX Cluster Member that functions as a physical switch. Acronym: VSW.

 

11

Network 2

5

External Interface

 

VLAN Interface

6

Virtual System 1

 

VLAN Trunk

7

Internal Interface

 

Warp LinkClosed Logical interface that is created automatically in a VSX topology between: (1) Virtual System and Virtual Switch (2) Virtual System and Virtual Router. Acronym: WRP.

Creating a New Virtual System

You use the Virtual Systems Wizard to create a new Virtual System. Modify the initial definition and configure advanced options after you complete the wizard.

To start the Virtual System wizard:

  1. Connect with SmartConsoleClosed Check Point GUI application used to manage a Check Point environment - configure Security Policies, configure devices, monitor products and events, install updates, and so on. to the Security Management ServerClosed Dedicated Check Point server that runs Check Point software to manage the objects and policies in a Check Point environment within a single management Domain. Synonym: Single-Domain Security Management Server. or Target Domain Management ServerClosed Check Point Single-Domain Security Management Server or a Multi-Domain Security Management Server. that manages the new Virtual System.

  2. From the left navigation panel, click Gateways & Servers.

  3. Create a new Virtual System object in one of these ways:

    • From the top toolbar, click the New () > VSX > New Virtual System.

    • In the top left corner, click Objects menu > More object types > Network Object > Gateways and Servers > VSX > New Virtual System.

    • In the top right corner, click Objects Pane > New > More > Network Object > Gateways and Servers > VSX > Virtual System.

    The Virtual System Wizard opens.

  4. Configure the applicable settings in the wizard as described below.

  5. Install the applicable Access Control Policy on the new Virtual System object.

The General Properties wizard page defines the Virtual System object and the hosting VSX Gateway.

These are the parameters in this page:

In the Virtual System Network Configuration page, define internal and external interfaces and the IP address topology behind the internal interface.

To configure the external and internal interfaces:

  1. In the interface table, define the applicable interfaces.

    You can add new interfaces and delete and change existing interfaces.

    To add an interface, click Add. The Interface Properties window opens.

    Select an interface from the list and define its properties.

  2. Select the Main IP Address from the list.

    This IP address is usually assigned to the external interface and specifies the Virtual System address used with NAT or VPN connections.

    To make an external IP address routable, select the external interface IP address as the main IP address.

  3. Define network routing for your deployment.

    Some routes are automatically defined by the interface definitions. For example, you define a default gateway route leading to an external Virtual RouterClosed Virtual Device on a VSX Gateway or VSX Cluster Member that functions as a physical router. Acronym: VR. or to the Virtual System external interface.

    To manually add a default route to the Routes table, click Add Default Routes. Enter the default route IP address, or select the default Virtual Router. The Route Configuration window opens.

  4. Complete the definition.

Interfaces: To configure the external and internal interfaces, define interfaces and links to devices in the Interfaces table. You can add, change, and remove interfaces. To add an interface, click Add. The Interface Properties window opens. Select an interface from the list and define is properties.

Click Next and then click Finish to create the Virtual System.

Note that this may take several minutes to complete.

A message appears indicating successful or unsuccessful completion of the process.

If the process ends unsuccessfully, click View Report to view the error messages.

For further assistance, see VSX Diagnostics and Troubleshooting.

After you create a Virtual System using the Virtual System Wizard, you can modify the topology and all other parameters (except the name of the Virtual System) using the Virtual System Properties window.

Modifying a Virtual System

  1. Connect with SmartConsole to the Security Management Server or Target Domain Management Server used to manage the Virtual System.

  2. From the Gateways & Servers view or Object Explorer, double-click the Virtual System object.

  3. Configure the applicable settings as described below.

  4. Click OK to push the VSX Configuration.

  5. Install the applicable Access Control Policy on the new Virtual System object.

The General Properties page lets you specify the main IP address and to enable various Check Point products for a Virtual System.

The Topology page contains definitions for Virtual System interfaces, routes and Warp Links. Based on these interface settings, VSX automatically creates routes to Virtual Devices and the VSX Gateway.

Note - If you modify the topology for a specific Virtual System in a cluster environment, the cluster topology is not updated until you install a policy on that Virtual System.

  • Interfaces: The Interfaces section defines interfaces and links to devices. You can add new interfaces as well as delete and modify existing interfaces.

    To add an interface, click New and select one of these options:

    • Regular - To select a physical interface

    • Leads to Virtual Router - To attach this Virtual System to a Virtual Router

    • Leads to Virtual Switch - To attach this Virtual System to a Virtual Switch

    The Interface Properties window opens. Select the interface from the list and define the appropriate properties. The sectionWorking with Interface Definitions and the SmartConsole online help provide explanations of the various properties and options.

    Click Actions > Copy to Clipboard to copy the Interfaces table in CSV format.

  • Routes: To add a default route to the Routes table, click Add Default Routes and either enter an IP address or select a Virtual Router. The Route Configuration window opens. Click Help for details regarding the various properties and options. You can also add, change and remove routes (see Working with VSX Gateways).

  • Calculate topology automatically based on routing information: Enable this option to allow VSX to automatically calculate the network topology based on interface and routing definitions (enabled by default). VSX creates automatic links, or connectivity cloud objects linked to existing internal or external networks.

    • When this option is enabled, you cannot configure the topology using Topology tab in the Interface Properties window. These options are not available on the tab.

    • This option is not available in the Bridge Mode.

    • When employing dynamic routing, it is recommended to disable this option.

  • VPN Domain: The VPN Domain defines the set of hosts located behind a given Virtual System that communicate via a VPN tunnel with peer Virtual Systems. These options are only available if you selected VPN in the Check Point Products section on the General Properties page.

    When including a Virtual Device as part of a VPN connection, you must specify a VPN Domain. The domain definition specifies Virtual System interfaces that are included in the VPN.

    You can define a VPN Domain by enabling the applicable option:

    • All IP Addresses behind gateway based on topology information: Includes all hosts not located behind an external VSX Gateway interface.

    • Manually Defined: Includes all hosts in the selected network or group.

On the NAT > Advanced page, you configure NAT rules for packets originating from a Virtual System.

To enable and configure NAT for a Virtual System:

  1. Select Add Automatic Address Translation.

  2. Select a translation method:

    • Hide: Hide NAT only allows connections originating from the internal network. Internal hosts can access internal destinations, the Internet and other external networks. External sources cannot initiate a connection to internal network addresses.

    • Static: Static NAT translates each private address to a corresponding public address.

  3. If you select Hide, select one of these options:

    • Hide behind Gateway hides the real IP address behind the Virtual System external interface IP address,

      or

    • Hide behind IP Address hides the real address behind a virtual IP address, which is a routable, public IP address that does not belongs to any real machine.

  4. If you selected Static NAT, enter the static IP address in the appropriate field.

  5. Select the VSX Gateway from the Install on Gateway list.

In addition, see Working with Network Address Translation (NAT).

Deleting a Virtual System

To delete a Virtual System:

  1. From the Gateways & Servers view or Object Explorer tree, right-click the Virtual System object and select Delete.

  2. In the window that opens, click Yes.

Configuring DNS Servers on a Virtual System

GaiaClosed Check Point security operating system that combines the strengths of both SecurePlatform and IPSO operating systems. uses the Domain Name Service (DNS) to translate host names into IP addresses.

To enable DNS lookups, you must enter the primary DNS server for your system. You can also enter secondary and tertiary DNS servers.

When the system resolves host names, it consults the primary name server. If a failure or time-out occurs, the system consults the secondary name server, and if necessary, the tertiary.

You can also define a DNS Suffix, which is a search for host-name lookup.

From R81, it is possible to configure each Virtual System:

  • A Virtual System uses the specific configured DNS servers for all DNS queries.

  • A Virtual System uses the configured DNS Forwarding Domain.

    The DNS Forwarding Domain determines the Domain Suffix and the DNS Servers for this Domain Suffix:

    • For all DNS queries that end with the Forwarding Domain Suffix, a Virtual System uses the specific DNS servers configured for this Forwarding Domain Suffix.

    • For all other DNS queries, a Virtual System uses other specific DNS servers configured in the Virtual System.

    Note - If a Domain in a DNS query contains a shorter Domain as its suffix, then for all DNS queries that end with the longer Domain’s suffix a Virtual System uses the DNS servers configured to the longest Domain’s match. For example, if you configured the Domain Suffixes "com" and "checkpoint.com" and their corresponding DNS servers, then for a DNS query with the suffix "support.checkpoint.com", a Virtual System uses the DNS server configured for the Domain Suffix "checkpoint.com" and not the DNS server configured for the Domain Suffix "com".

  • A Virtual System listens to DNS queries on specific interfaces and forwards them through all other interfaces (all these interfaces belong to the same Virtual System).

Important:

  • You can configure one or all of the above specific DNS settings on a Virtual System.

    To configure and use any of the above specific DNS settings, you must enable the entire feature on the VSX Gateway (each VSX Cluster MemberClosed Security Gateway that is part of a cluster.).

  • By default, this feature is disabled:

    All Virtual Systems you create use the global DNS settings configured on the VSX Gateway or VSX Cluster Member.

  • When you enable this feature:

    1. The default DNS settings in the context of VS0 become the same as the global DNS settings configured on the VSX Gateway or VSX Cluster Member.

    2. The default DNS settings in the context of every new Virtual System become the same as the DNS settings in the context of VS0.

  • When you disable this feature:

    The global DNS settings on the VSX Gateway or VSX Cluster Member become the same as the DNS settings in the context of VS0.

  • You must configure all DNS settings in Gaia ClishClosed The name of the default command line shell in Check Point Gaia operating system. This is a restricted shell (role-based administration controls the number of commands available in the shell). on the VSX Gateway (each VSX Cluster Member).

  • In a VSX Cluster, you must configure all the VSX Cluster Members in the same way.

  • Some programs that use POSIX sockets to resolve hostnames (for example, ping and ssh) fail to do so when they resolve names without “.” in them. These programs rely on the DNS search suffix.

  • For Software Blades that require contracts or updates to function, you must configure the DNS servers in the context of the VSX Gateway or VSX Cluster Member itself (context of VS0). For additional information, see sk106496.

  1. Connect to the command line on the VSX Gateway (each VSX Cluster Member).

  2. Log in to Gaia Clish.

  3. Enable ("per-vs") or disable ("default") the feature:

    Note - You can run this command in the context of any Virtual Device.

    set dns mode {per-vs | default}

  4. Show the status of the feature:

    show dns mode

  5. Save the changes:

    save config

  1. Connect to the command line on the VSX Gateway (each VSX Cluster Member).

  2. Log in to Gaia Clish.

  3. Enable the feature:

    set dns mode per-vs

    show dns mode

  4. Go to the context of the applicable Virtual System:

    set virtual-system <VSID>

  5. Configure the DNS Servers and the DNS Suffix:

    set dns
      primary <IPv4 or IPv6 Address>
      secondary <IPv4 or IPv6 Address>
      tertiary <IPv4 or IPv6 Address>
      suffix <Name for Local Domain>

  6. Show the configured settings:

    show dns

  7. Save the changes:

    save config 

set virtual-system <VSID>
delete dns
      primary
      secondary
      tertiary
      suffix
save config
 
set dns mode per-vs
set virtual-system 1
set dns primary 192.168.10.21
set dns secondary 192.168.10.22
set dns tertiary 192.168.10.23
set dns suffix mycompany.com
show dns
save config

  1. Connect to the command line on the VSX Gateway (each VSX Cluster Member).

  2. Log in to Gaia Clish.

  3. Enable the feature:

    set dns mode per-vs

    show dns mode

  4. Go to the context of the applicable Virtual System:

    set virtual-system <VSID>

  5. Configure the DNS Servers and the DNS Suffix for all DNS queries:

    set dns
      primary <IPv4 or IPv6 Address>
      secondary <IPv4 or IPv6 Address>
      tertiary <IPv4 or IPv6 Address>
      suffix <Name for Local Domain>

  6. Show the configured settings for all DNS queries:

    show dns

  7. Configure the Forwarding Domain Suffix:

    add dns proxy forwarding-domain <Domain Suffix>

  8. Configure the DNS Servers for the specific Forwarding Domain Suffix:

    set dns proxy forwarding-domain <Domain Suffix>
      primary <IPv4 or IPv6 Address>
      secondary <IPv4 or IPv6 Address>
      tertiary <IPv4 or IPv6 Address>

  9. Show the configured Forwarding Domain Suffixes:

    show dns proxy forwarding-domains

  10. Show the configured settings for the specific Forwarding Domain Suffix:

    show dns proxy forwarding-domain <Domain Suffix>
      primary
      secondary
      tertiary

  11. Save the changes:

    save config 

set virtual-system <VSID>
delete dns
      primary
      secondary
      tertiary
      suffix
save config
 
set virtual-system <VSID>
delete dns proxy forwarding-domain <Domain Suffix>
save config
 
set virtual-system <VSID>
delete dns proxy forwarding-domain <Domain Suffix>
      primary
      secondary
      tertiary
save config
 
set dns mode per-vs
set virtual-system 1
set dns primary 192.168.10.21
set dns secondary 192.168.10.22
set dns tertiary 192.168.10.23
set dns suffix mycompany.com
show dns
add dns proxy forwarding-domain anothercompany.com
set dns proxy forwarding-domain anothercompany.com primary 172.16.30.41
set dns proxy forwarding-domain anothercompany.com secondary 172.16.30.42
set dns proxy forwarding-domain anothercompany.com tertiary 172.16.30.43
show dns proxy forwarding-domains
show dns proxy forwarding-domain anothercompany.com primary
show dns proxy forwarding-domain anothercompany.com secondary
show dns proxy forwarding-domain anothercompany.com tertiary
save config

  1. Connect to the command line on the VSX Gateway (each VSX Cluster Member).

  2. Log in to Gaia Clish.

  3. Enable the feature:

    set dns mode per-vs

    show dns mode

  4. Go to the context of the applicable Virtual System:

    set virtual-system <VSID>

  5. Configure the DNS Servers and the DNS Suffix for all DNS queries:

    set dns
      primary <IPv4 or IPv6 Address>
      secondary <IPv4 or IPv6 Address>
      tertiary <IPv4 or IPv6 Address>
      suffix <Name for Local Domain>

  6. Show the configured settings:

    show dns
      primary
      secondary
      tertiary
      suffix

  7. Configure the interfaces, on which the Virtual System must listen to DNS queries:

    add dns proxy listening-interface <Name of Virtual System Interface>

  8. Show the configured listening interfaces:

    show dns proxy listening-interfaces

  9. Save the changes:

    save config 

set virtual-system <VSID>
delete dns
      primary
      secondary
      tertiary
      suffix
save config
 
set virtual-system <VSID>
delete dns proxy listening-interface <Name of Virtual System Interface>
save config
 
set dns mode per-vs
set virtual-system 1
set dns primary 192.168.10.21
set dns secondary 192.168.10.22
set dns tertiary 192.168.10.23
set dns suffix mycompany.com
show dns
add dns proxy listening-interface wrp128
show dns proxy listening-interfaces
save config

Parameter

Description

mode {per-vs | default}

Enables ("per-vs") or disables ("default") the feature.

primary <IPv4 or IPv6 Address>

Specifies the IPv4 or IPv6 address of the primary DNS server, which resolve host names.

This must be a host that runs a DNS server.

secondary <IPv4 or IPv6 Address>

Specifies the IPv4 or IPv6 address of the secondary DNS server, which resolves host names if the primary server does not respond.

This must be a host that runs a DNS server.

tertiary <IPv4 or IPv6 Address>

Specifies the IPv4 or IPv6 address of the tertiary DNS server, which resolves host names if the primary and secondary servers do not respond.

This must be a host that runs a DNS server.

suffix <Name for Local Domain>

Specifies the name that is put at the end of all DNS searches if they fail.

By default, it must be the local domain name.

A valid domain name suffix is made up of subdomain strings separated by periods.

Subdomain strings must begin with an alphabetic letter and can consist only of alphanumeric characters and hyphens.

The domain name syntax is described in RFC 1035 (modified slightly in RFC 1223).

Note - Domain names that are also valid numeric IP addresses (for example: 10.19.76.100), although syntactically correct, are not permitted.

Example:

You configured the DNS Suffix "example.com" and you try to ping the host "foo" (with the command "ping foo"). If Gaia cannot resolve "foo", then Gaia tries to resolve "foo.example.com".

forwarding-domain <Domain Suffix>

Specifies the Forwarding Domain Suffix.

The DNS Forwarding Domain determines the Domain Suffix and the DNS Servers for this Domain Suffix:

  • For all DNS queries that end with the Forwarding Domain Suffix, a Virtual System uses the specific DNS servers configured for this Forwarding Domain Suffix.

  • For all other DNS queries, a Virtual System uses other specific DNS servers configured in the Virtual System.

listening-interface <Name of Virtual System Interface>

Specifies the name of a Virtual System interface, on which the Virtual System must listen to DNS queries.