1. 76th IETF meeting, November 8-13, 2009
Recommendations for filtering ICMP messages (draft-ietf-opsec-icmp-filtering)
Fernando Gont
UTN/FRH
76th IETF meeting, November 8-13, 2009
Hiroshima, Japan

2. Changes from the last rev
Populated a few sections
Updated outdated references
Miscellaneous edits
Progress was slow… but now commiting more cycles to it

3. Open Issues The document is currently heading for Informational.
Some suggested BCP
BCP might be a better target (personally, I’m happy either way)
Got some positive comments for aiming at BCP
Current advice assumes what to do with ICMP messages that go “through” the device
Should advice also address filtering messages from/to the device?
Got some positive comments about this idea

4. Moving forward Currently working working on the ICMPv6 sections
Rest of the document still needs work/review
If you have feedback, post it on or send it to