nanog mailing list archives
Re: Common operational misconceptions
From: Jeff Kell <jeff-kell () utc edu>
Date: Wed, 15 Feb 2012 18:18:21 -0500
(1) Block all ICMP (obviously some are required for normal operations, unreachables, pMTU too large/DF set, etc). (2) Block certain ports (blindly, w/o at least "established") taking out legitimate ephemeral port usage. (3) Local uRPF is unnecesary (or source spoofing mitigation in general) (4) Automagical things are necessary (Microsoft proprietary, UPnP, Apple Bonjour, mDNS, etc) (5) WAN routing to multiple providers will automagically load-balance automagically. or for that matter... (6) IGP routing across multiple paths will automagically load-balance automagically. Or for that matter... (7) Port-channel (link aggregation) will load-balance automagically. (8) Connectivity/throughput issues are always local or first-hop. (We have a gig connection, why am I not getting a gig throughput) I'm sure there are more, but those were at the top of my head :) Jeff
Current thread:
- Re: Common operational misconceptions, (continued)
- Re: Common operational misconceptions Jared Mauch (Feb 17)
- Re: Common operational misconceptions Leo Bicknell (Feb 15)
- Re: Common operational misconceptions Doug Barton (Feb 15)
- Re: Common operational misconceptions Mark Andrews (Feb 15)
- Re: Common operational misconceptions Doug Barton (Feb 15)
- Re: Common operational misconceptions Chuck Anderson (Feb 15)
- Re: Common operational misconceptions Carsten Bormann (Feb 15)
- Re: Common operational misconceptions Mike Lyon (Feb 15)
- Re: Common operational misconceptions Phil Dyer (Feb 15)
- Re: Common operational misconceptions Anton Kapela (Feb 15)
- Re: Common operational misconceptions Chuck Anderson (Feb 15)
- Re: Common operational misconceptions Jeff Kell (Feb 15)
- Re: Common operational misconceptions Carsten Bormann (Feb 15)
- Re: Common operational misconceptions Rich Kulawiec (Feb 15)
- Re: Common operational misconceptions Chris Campbell (Feb 16)
- Re: Common operational misconceptions Jeff Kell (Feb 16)
- Re: Common operational misconceptions Chris Campbell (Feb 16)
- Re: Common operational misconceptions Alexandre Grojsgold (Feb 15)
- Re: Common operational misconceptions Jeff Wheeler (Feb 15)
- Re: Common operational misconceptions Lee (Feb 15)
- Re: Common operational misconceptions Wayne E Bouchard (Feb 16)
- Re: Common operational misconceptions Justin M. Streiner (Feb 16)
- Re: Common operational misconceptions Tony Tauber (Feb 16)
- Re: Common operational misconceptions Wayne E Bouchard (Feb 16)
- Re: Common operational misconceptions Masataka Ohta (Feb 15)