Outside interface with port E0/0 and getting it’s IP address as a DHCP client.Quick and dirty example to configure an ASA 5505 with: These protected ports can communicate with other VLANs, just not with other protected ports in the same VLAN) switchport protected to prevent a port from communicating with other protected ports in the same VLAN.Configured as a trunk port (via the switchport mode trunk command)Īdditionally, you can configure any switch port (no matter if it’s a access port or trunk port) with these optional commands:.Configured with the VLANs permitted to pass traffic (via the switchport trunk allowed vlan command).Each port can only have one native VLAN, but multiple ports can be assigned the same native VLAN. Packets which have no 802.1Q header are put into the native VLAN when they enter this port. All other packets that leave the port are modified with an 802.1Q header. Packets on the native VLAN are not modified when sent over the trunk. Assigned a native VLAN (via the switchport trunk native vlan command).it can carry multiple VLANs using 802.1Q tagging).
If you have a Security Plus license, you can set any switch port as a trunk port (i.e.
If you name a VLAN outside or inside, it automatically gets assigned a security level of 0 (outside) or 100 (inside).
The Cisco ASA 5505 is the lowest-end ASA.