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V-273620

CAT II (Medium)

The RUCKUS ICX PE router must be configured to ignore or block all packets with any IP options.

Rule ID

SV-273620r1110929_rule

STIG

RUCKUS ICX Router Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-001097

Discussion

Packets with IP options are not fast switched and therefore must be punted to the router processor. Hackers who initiate denial-of-service (DoS) attacks on routers commonly send large streams of packets with IP options. Dropping the packets with IP options reduces the load of IP options packets on the router. The end result is a reduction in the effects of the DoS attack on the router and on downstream routers.

Check Content

Review the router configuration to determine if it will drop all packets with IP options as shown below:

ip options drop

If the router is not configured to drop all packets with IP options, this is a finding.

Fix Text

Configure the router to drop all packets with IP options as shown below:

ICX(config)#ip options drop