Reter to the exhibit.
Refer to the exhibit. An attacker can advertise OSPF fake routes from 172.16.20.0 network to the OSPF domain and black hole traffic. Which action must be taken to avoid this attack and still be able to advertise this subnet into OSPF?

Question

Reter to the exhibit.Refer to the exhibit. An attacker can advertise OSPF fake routes from 172.16.20.0 network to the OSPF domain and black hole traffic. Which action must be taken to avoid this attack and still be able to advertise this subnet into OSPF?

Salah Dabwan · Accepted Answer

Configure a passive Interface on R2 toward 172.16.20.0.

Salah Dabwan · Answer

Configure 172.16.20.0 as a stub network.

Salah Dabwan · Answer

Apply a policy to filter OSPF packets on R2.

Salah Dabwan · Answer

Configure graceful restart on the 172.16.20.0 interface.

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