F5F Stay Refreshed Power Users Networks Configure the firewall to forward traffic and discard invalid packets.

Configure the firewall to forward traffic and discard invalid packets.

Configure the firewall to forward traffic and discard invalid packets.

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EisTeeKlaus
Senior Member
490
03-15-2025, 06:41 PM
#1
By default on the new RB5009, a firewall rule blocks all Forward traffic marked as connection state Invalid. This prevents one of my VLANs from reaching another device directly on the same switch, such as trying to access webfig on the RB5009. The routing for that connection is handled by the RB5009 itself. Removing this rule would restore connectivity between the two devices. The RB5009 functions as the edge device connected to your ISP modem. Disabling the rule doesn’t introduce external traffic risks; it only affects internal VLAN communication.
E
EisTeeKlaus
03-15-2025, 06:41 PM #1

By default on the new RB5009, a firewall rule blocks all Forward traffic marked as connection state Invalid. This prevents one of my VLANs from reaching another device directly on the same switch, such as trying to access webfig on the RB5009. The routing for that connection is handled by the RB5009 itself. Removing this rule would restore connectivity between the two devices. The RB5009 functions as the edge device connected to your ISP modem. Disabling the rule doesn’t introduce external traffic risks; it only affects internal VLAN communication.

M
moonhoax
Member
148
03-15-2025, 06:41 PM
#2
Could you clarify what you're trying to understand about this rule?
M
moonhoax
03-15-2025, 06:41 PM #2

Could you clarify what you're trying to understand about this rule?