V-251751

Discussion

A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to learn confidential information about the site's network or used to disrupt the network's ability to communicate with other networks. This is known as a "traffic attraction attack" and is prevented by configuring neighbor router authentication for routing updates.

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If the Tier-0 Gateway is not using BGP or OSPF, this is Not Applicable.

Since the NSX-T Tier-0 Gateway does not reveal if a BGP password is configured, interview the router administrator to determine if a password is configured on BGP neighbors.

If BGP neighbors do not have a password configured, this is a finding.

To verify OSPF areas are using authentication do the following:

From the NSX-T Manager web interface, go to Networking >> Tier-0 Gateways.

For every Tier-0 Gateway expand the "Tier-0 Gateway".

Expand "OSPF", click the number next to Area Definition, and view the Authentication field for each area.

If OSPF area definitions do not have Password or MD5 set for authentication, this is a finding.

Note: OSPF support was introduced in version 3.1.1.