V-283883

Discussion

If the static routes to the alternate gateway are being redistributed into an Exterior Gateway Protocol (EGP) or IGP to a NIPRNet gateway, this could make traffic on NIPRNet flow to that particular router and not to the internet Access Point routers. This could wreak havoc with traffic flows on NIPRNet, overwhelm the connection from the router to the NIPRNet gateway(s), and cause traffic destined for outside of NIPRNet to bypass the defenses of the internet Access Points.

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This requirement is not applicable for the DODIN Backbone. 

Nokia routers do not automatically distribute static routes to IGP protocols unless a routing policy is applied to distribute these routes. Review the configuration of the router connecting to the alternate gateway and verify redistribution of static routes to the alternate gateway is not occurring. 

Use this command for BGP neighbors and verify an "Export Policy" is defined: 

- show router bgp neighbor 50.50.50.1 detail | match "Export Policy"

Export Policy        : EXPORT-STATIC

If the static routes to the alternate gateway are being redistributed into BGP or any IGP peering with a NIPRNet gateway or another autonomous system, this is a finding.