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[EX] Creating a firewall filter to block fragmented packets



Article ID: KB20811 KB Last Updated: 10 May 2011Version: 1.0
How to block fragmented packets with a firewall filter on EX Switches
This article provides a basic example for blocking fragmented packets from/to a host.  See documentation link provided for additional details related to creating firewall filters.
Fragmented packets coming from a destination can be blocked with the filter given below:
set firewall family inet filter test term fragment from destination-address
set firewall family inet filter test term fragment from is-fragment
set firewall family inet filter test term fragment then discard
Then the filter can be applied to an interface.

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