4.3. Network settings

The Basic Settings > Network tab contains the network interface and naming settings of PSM.


Figure 4.8.  Basic Settings > Network > Interfaces

Basic Settings > Network > Interfaces
Basic Settings > Network > Interfaces

Lists all of the logical interfaces (VLAN IDs, IP addresses, netmasks, and names) assigned to the three physical interfaces of PSM. For more information on managing logical interfaces, see Procedure 4.3.2, Managing logical interfaces.

In addition, it is also possible to set the Maximum Transmission Unit (MTU) for each network interface (VLAN or network interface card) individually. The default value is 1500.

Speed is displayed for every physical interface. To explicitly set the speed of the interface, select the new value from the Speed field. Modifying the speed of an interface is recommended only for advanced users.

You can add interface-specific network routes using the Advanced routing option of each interface. Otherwise, use the Routing table option to manage networking routes.

Routing table: 

Figure 4.9.  Basic Settings > Network > Routing table

Basic Settings > Network > Routing table

When sending a packet to a remote network, PSM consults the routing table to determine the path it should be sent. If there is no information in the routing table then the packet is sent to the default gateway. Use the routing table to define static routes to specific hosts or networks. You have to use the routing table if PSM interfaces are connected to multiple subnets.

Click the and icons to add new routes or delete existing ones. A route means that messages sent to the Address/Netmask network should be delivered to Gateway.

For detailed examples, see Procedure 4.3.4, Configuring the routing table.

IP forwarding: 

Figure 4.10.  Basic Settings > Network > IP forwarding

Basic Settings > Network > IP forwarding

You can enable routing between logical interfaces, which allows you to direct uncontrolled traffic through PSM. For more information, see Procedure 4.3.3, Routing uncontrolled traffic between logical interfaces.

To mimic the functionality of the deprecated Router mode, configure a logical interface for each physical interface you want to connect, and enable IP forwarding between them.


Figure 4.11.  Basic Settings > Network > Naming

Basic Settings > Network > Naming
  • Hostname: Name of the machine running PSM.

  • Nick name: The nickname of PSM. Use it to distinguish the devices. It is displayed in the core and boot login shells.

  • DNS search domain: Name of the domain used on the network. When resolving the domain names of the audited connections, PSM will use this domain to resolve the target hostname if the appended domain entry of a target address is empty.

  • Primary DNS server: IP address of the name server used for domain name resolution.

  • Secondary DNS server: IP address of the name server used for domain name resolution if the primary server is unaccessible.