VLAN Interfaces on Palo Alto Firewalls

VLAN interfaces on Palo Alto Networks firewalls are utilized to segment network traffic logically. They allow for:

• Traffic Segregation : Isolating different types of traffic for security and organizational purposes.
• Inter-VLAN Routing : Facilitating communication between VLANs through Layer 3 routing.
• Enhanced Security : Applying specific security policies to distinct VLANs.

Configuration Steps

1. Configure Layer 2 Ethernet Interfaces :
   • Navigate to Network > Interfaces > Ethernet .
   • Select the desired interface (e.g., ethernet1/1 ).
   • Set the Interface Type to Layer2 .
   • Assign the interface to a Security Zone .
2. Create VLAN Objects :
   • Go to Network > VLANs .
   • Click Add to create a new VLAN.
   • Provide a Name for the VLAN.
   • Assign the previously configured Layer 2 interface to this VLAN.
3. Configure VLAN Interfaces (SVIs) :
   • Navigate to Network > Interfaces > VLAN .
   • Click Add to create a new VLAN interface.
   • Assign it to the VLAN object created earlier.
   • Set the Interface Type to Layer3 .
   • Assign an IP Address to the interface.
   • Associate it with a Virtual Router and a Security Zone .
4. Commit the Configuration :
   • After completing the above steps, click Commit to apply the changes.

References

• Configure a Layer 2 Interface, Subinterface, and VLAN
• Network > Interfaces > VLAN
• Configure a VLAN