Teltonika-TRB140.com - General Settings

Enable SYN-flood protection Enables protection from SYN flood type attacks. A SYN flood is a type of denial-of-service (DOS) attack where an attacker sends bursts of SYN requests in an attempt to make the target host machine consume enough resources and become unresponsive.	off on
Drop invalid packets If enabled, a "Drop" action will be performed on packets that are determined to be invalid.	off on
Input Default action of the INPUT chain if a packet does not match any existing rule on that chain.
Output Default action of the OUTPUT chain if a packet does not match any existing rule on that chain.
Forward Default action of the FORWARD chain if a packet does not match any existing rule on that chain.

Zone ⇒ Forwardings	Input Default policy for traffic entering the zone.	Output Default policy for traffic originating from and leaving the zone.	Forward Default policy for traffic forwarded between the networks belonging to the zone.	Masquerading Turns Masquerading off or on. MASQUERADE is an iptables target that can be used instead of the SNAT (source NAT) target when the external IP of the network interface is not known at the moment of writing the rule (when the interface gets the external IP dynamically).	MSS clamping Turns MSS clamping off or on. MSS clamping is a workaround used to change the maximum segment size (MSS) of all TCP connections passing through links with an MTU lower than the Ethernet default of 1500.
Zone ⇒ Forwardings lan lan: ⇒ wan mob1s1a1: openvpn	Input	Output	Forward	Masquerading off on	MSS clamping off on
Zone ⇒ Forwardings wan mob1s1a1: ⇒ lan lan:	Input	Output	Forward	Masquerading off on	MSS clamping off on
Zone ⇒ Forwardings newzone ⇒ REJECT	Input	Output	Forward	Masquerading off on	MSS clamping off on
Zone ⇒ Forwardings openvpn ⇒ lan lan:	Input	Output	Forward	Masquerading off on	MSS clamping off on